A fantastic opportunity for a Senior or Principal Machine Learning Engineer to join a fast-growing, health-tech company developing advanced machine learning and computer vision models used within clinical research and drug development. The business is building large-scale, production-grade ML systems applied to complex 3D imaging data.

This role is highly engineering-focused, sitting between machine learning, infrastructure and deployment. You will work closely with ML Scientists and engineering teams to ensure models can be trained and deployed reliably at scale.

Location: 1 day per week in London - Shepherd’s Bush (4 days remote)

Salary: £70,000 – £90,000 per annum, with flexibility for the right candidate, plus benefits

Requirements for Senior / Principal Machine Learning Engineer:

Strong relevant industry experience in machine learning engineering

Strong Python and PyTorch experience

Experience training machine learning models at scale

Experience building and maintaining model deployment and inference pipelines

Hands-on experience using Docker in production environments

Strong Linux and Git skills

Experience working in cloud environments (AWS, GCP or Azure all acceptable)

Experience working with CI pipelines

Proactive, self-sufficient and highly communicative working style

Strong English written and verbal communication skills

Educated to a minimum of Masters Level

Responsibilities:

Develop, train and deploy machine learning models into scalable production environments

Support and improve large-scale model training and inference pipelines

Collaborate closely with ML Scientists to productionise research models

Work with engineering teams to ensure robust, secure and efficient deployment

Contribute to code quality, documentation and best practices across the ML engineering function

What the role offers:

Work on impactful health-tech

Exposure to large-scale, real-world machine learning systems

A technically strong and collaborative engineering environment

Hybrid working with a remote-first approach

Clear cut career trajectory to becoming Head of Machine Learning

Applications:

If you would like to apply for this unique Machine Learning Engineering role, please send your CV via the relevant links.

We are committed to creating an inclusive and accessible recruitment process. If you require reasonable adjustments for your application or during the review process, please highlight this by separately emailing . If this email address has been removed by the job board, full contact details are readily available on our website.

Keywords: Senior Machine Learning Engineer / Principal Machine Learning Engineer / ML Engineer / Applied Machine Learning Engineer / Computer Vision Engineer / AI Engineer / Research Engineer / Python / PyTorch / Linux / Docker / Cloud ML / CI Pipelines / Model Deployment / Inference Pipelines

RedTech Recruitment Ltd focus on finding roles for Engineers and Scientists. Even if the above role is not of interest, please visit our website to see our other opportunities.
We are an equal opportunity employer and value diversity at RedTech. We do not discriminate on the basis of race, religion, colour, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status

• Location: London

• Days in the Office:2 days per week

• Job Title:Senior Engineer

• Key Skills:

• Work embedded in a cross-functional team with software developers, technical product owners and testers all working together towards common goals to develop JVM applications using Test Driven Development and Pair Programming

• Drive the design and implementation of our systems, knowing the context and why we are implementing what we are implementing, whilst always looking to improve our systems and ways of working

• Mentor and coach other engineers

• A willingness to pair program

Must-Haves:

• Strong verbal communication and collaboration skills
• In-depth knowledge and hands-on experience in a cross-functional, agile development team
• Enthusiasm for code development and education in this area

Nice-to-Haves:

• Experience in pair programming
• Proficiency in idiomatic Kotlin for application development

Experience:

• Extensive knowledge of Java programming language (5 years+)
• 5+ years practical experience in test driven development

AI Integration:

• We have an AI special interest group and are adopting AI based on individual context

Senior Software Engineer - (9 month contract)

Salary: Negotiable
Shift: Days Mon-Fri
Location: Remote - Can live anywhere

We are recruiting for an innovative market leader within the industry who are a major player in their field, miles ahead of the competition. This is an opportunity for an experienced Software Engineer to showcase their skills across multiple state-of-the-art automated facilities within the UK. You ll be based from home and will be focused on software development and JAVA development for highly automated distribution factories across the UK.
The Senior software engineer will be involved in some high level software development projects within automated warehouse environments.

Non Negotiable skills required for the Senior Software Engineer

• 5 years minimum experience in JAVA development
• Extensive software development experience
• Understanding of distribution and automated warehouse environments
• Strong interpersonal skills to liaise with site teams, colleagues, and management effectively.

The Senior Software Engineer will benefit from:

• Competitive pay rate
• Working for a highly reputable company
• Remote working from anywhere in the UK

If you are interested in this role and feel that you have the right skills, then please click apply at the bottom of this advert.

For further details contact Chris Bacchus at Pioneer Selection Ltd, you automatically become eligible for our referral scheme.

You will receive £250 for every candidate we place in permanent employment who has been recommended by you. Terms and Conditions apply please see our website for further details.

T24 Developer – SC Cleared – London

A client is looking for an experienced SC Cleared T24 Developer specialising in Temenos Transact (formerly T24), delivering high-quality solutions across core banking transformation, integration, and upgrade programs.

Key Experience and Skills of the T24 Developer:

• Must have active SC Clearance.
• Must have experience within T24 development including payments, clearing and customisation.
• Must have strong experience with TPH configuration.
• Experience within an Agile or Scrum environment within the regulated sector.
• Must have experience with SWIFT and payment processing interfaces.
• Must have extensive knowledge of integration tools such as SWIFT Alliance Gateway, IBM MQ or SAP.
• Strong experience with Confluence and SharePoint.

Key Responsibilities of the T24 Developer:

• Configure, test and integrate Sprint backlog items within T24.
• Ensure deliverables meet Definition of Done (DoD) and release governance standards.
• Document solutions in Confluence and SharePoint.
• Actively participate in Scrum meetings (Planning, Stand-ups, Reviews, Retrospectives)
• Prepare T24 mapping documents.
• Maintain non-live environments (run COBs, resolve memory issues, manage code conflicts)

The Security cleared T24 Developer is required onsite, 2 days per week in Central London.

Apply now to speak with VIQU IT in confidence. Or reach out to Matt Farrell via the VIQU IT website.

Do you know someone great? We’ll thank you with up to £1,000 if your referral is successful (terms apply).

For more exciting roles and opportunities like this, please follow us on LinkedIn @VIQU IT Recruitment.

Role Details:Position: SparkScala DeveloperLocation: London, UK (Hybrid)Work Mode: Hybrid (3 Days a week from Office)Duration: Initial contract will be for 12 months, however long-term projectRate: Inside IR35- Up to GBP 450/day
?? Visa Note: Open to British Citizenship, or ILR (Indefinite Leave to Remain), or UK Settlement Visa. We do not provide visa sponsorship.
Key Requirements:Must have skills:-Spark & Scala
Nice to have skills:-Spark Streaming, Hadoop,-Hive,-SQL,-Sqoop,- Impala
Detailed Job Description: At least 8+ years of experience and strong knowledge in Scala programming language. Able to write clean, maintainable and efficient Scala code following best practices. Good knowledge on the fundamental Data Structures and their usage At least 8+ years of experience in designing and developing large scale, distributed data processing pipelines using Apache Spark and related technologies. Having expertise in Spark Core, Spark SQL and Spark Streaming. Experience with Hadoop, HDFS, Hive and other BigData technologies. Familiarity with Data warehousing and ETL concepts and techniques Having expertise in Database concepts and SQL/NoSQL operations. UNIX shell scripting will be an added advantage in scheduling/running application jobs. At least 8 years of experience in Project development life cycle activities and maintenance/support projects. Work in an Agile environment and participation in scrum daily standups, sprint planning reviews and retrospectives. Understand project requirements and translate them into technical solutions which meets the project quality standards Ability to work in team in diverse/multiple stakeholder environment and collaborate with upstream/downstream functional teams to identify, troubleshoot and resolve data issues. Strong problem solving and Good Analytical skills. Excellent verbal and written communication skills. Experience and desire to work in a Global delivery environment. Stay up to date with new technologies and industry trends in Development.

Principle Java Engineer

Salary to £70k + Company Options Scheme

Hybrid working between your home, their offices (London Vauxhall) & client sites.

NB: Please only apply if you are a UK National and able to achieve SC (ideally DV) clearance

i.e. you have at least 5 years residency in the UK with no more than a 3 month break outside the UK.

This company is a Workflow & AI Orchestration Specialist. They’re on a mission to modernise how public sector organisations manage casework, derive insight from data and deliver citizen services. Theyre growing fast and looking for bright, dynamic people to help build their business.

Role

Theyre looking for an experienced (Principle/Team Lead) Java Engineer to join their implementation team.

Youll work across Camunda BPMN/DMN process automation, API integration, and microservice orchestration helping their public-sector clients build secure, scalable, and resilient digital services.

Youll collaborate with solution architects, business analysts, and designers to translate workflows into elegant, maintainable code. Youll play a key part in defining technical standards, optimising runtime performance, and mentoring less- experienced engineers in workflow-centric delivery.

This is an ideal role for someone who enjoys solving complex process problems through clean code, automation, and modern engineering practices.

The role involves visiting client sites; the company will cover travel expenses. Frequency is uncertain but candidates should be comfortable with that being 2-3 days per week. Client sites could be anywhere but will most likely be in & around London.

Responsibilities

Design, develop, and deploy Camunda-based process and decision automation solutions

Implement and integrate Java-based microservices, APIs, and connectors within orchestration flows

Translate BPMN and DMN models into executable workflows and reusable components

Collaborate closely with analysts and service designers to refine and iterate business processes

Develop and maintain automated test suites, CI/CD pipelines, and containerised deployments

Optimise Camunda engine performance and monitor workflow metrics for production environments

Participate in code reviews, peer testing, and technical design discussions

Contribute to their internal best-practice frameworks and automation accelerators

Essential

Eligible (have resided in the UK for the past 5 years) and prepared to go through UK SC Security Clearance

Strong experience in Java software engineering and object-oriented design

Strong Spring (Boot) experience

Experience with REST APIs, and microservice architectures

Knowledge of Docker and Kubernetes for containerisation and orchestration

Proficiency in Git, CI/CD pipelines, and automated testing frameworks

Understanding of event-driven design and message brokers (e.g. Kafka, RabbitMQ)

Good knowledge of security, authentication, and integration patterns for enterprise systems

Experience working in agile teams within digital transformation or automation programmes

A willingness to learn BPMN and Camunda tooling

Some exposure to process automation or microservice orchestration

Desirable

Experience with Camunda 8 (Zeebe) clusters and Operate/Tasklist components

Experience implementing solutions using Camunda 7 or 8 (BPMN/DMN)

Familiarity with Camunda connectors, external task workers, and scripting extensions

Exposure to cloud platforms (AWS, Azure, GCP) and infrastructure-as-code (Terraform, Helm)

Experience integrating process automation with case-management or service-orchestration platforms

Understanding of agentic AI capabilities and how they can complement workflow automation

Experience mentoring developers or contributing to open-source Camunda extensions

Already holding UK security clearance (SC, DV, eDV)

Other Stuff

NB: Please only apply if you are a UK National and able to achieve SC or DV clearance.

i.e. you have at least 5 years residency in the UK with no more than a 3 month break outside the UK.

NB: for non-UK Citizens; we cannot accept applications from anyone requiring sponsorship (now or in the future) for UK permanent employment status. If you are utilising a work visa this must allow you to work in the UK unrestricted for at least the next 5 years.

Profile 29 recruitment keywords: Java software engineer object-oriented design OOD Camunda BPMN DMN Spring Boot REST API microservice architecture Docker Kubernetes containerisation orchestration Git CI/CD pipelines automated testing frameworks Kafka RabbitMQ Security authentication integration patterns enterprise systems agile digital transformation automation Java developer Camunda developer Zeebe Cloud AWS Azure GCP Terraform Helm process automation agentic AI artificial intelligence security clearance SC DV eDV London home based hybrid lead senior manager manage

You will play a key role in designing, developing, and supporting high-performance software solutions within secure and mission-critical environments. You’ll work closely with multidisciplinary teams to deliver reliable, scalable, and maintainable systems that meet demanding operational requirements. This role will involve contributing across the full development lifecycle, from early design and implementation through to deployment and long-term support, using modern cloud-native and DevOps practices.

Key Responsibilities

• Design, develop, test, and maintain secure, high-performance backend services using modern programming languages.
• Write clean, efficient, and maintainable code with a strong focus on reliability, performance, and security.
• Translate solution architectures and business requirements into detailed technical designs and implementations.
• Build, deploy, and manage containerised applications on Kubernetes using Helm and continuous deployment tools.
• Support Agile delivery by contributing to sprint planning, backlog refinement, and user story development.
• Produce clear, accurate, and high-quality technical documentation in line with agreed standards.
• Participate actively in Agile ceremonies, including stand-ups, planning sessions, reviews, and retrospectives.
• Monitor live systems, investigate performance or reliability issues, and implement fixes and enhancements.
• Collaborate with DevOps and platform teams to improve automation, testing, and deployment pipelines.
• Contribute to prototyping, experimentation, and the development of innovative technical solutions.
• Ensure compliance with organisational processes, quality standards, and security requirements.
• Support continuous improvement through code reviews, knowledge sharing, and adoption of new technologies.

Reasonable Adjustments:

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason, please let us know when you apply or talk to the recruiters directly so we can support you.

Senior Java Kotlin Software Engineer - Contract Opportunity Hybrid Central London offices - NO SPONSORSHIP OFFERED We’re looking for an experienced engineer to join a collaborative, multi‑disciplinary product team. If you enjoy building high‑quality backend systems, working closely with others, and continuously improving both code and ways of working, this role could be a great fit. Required Experience At least 5 years of hands‑on Java development. 5+ years of Test‑Driven Development in real project environments. Familiarity with Kotlin, ideally writing production‑ready code. What You’ll Be Doing Building JVM‑based services using Test‑Driven Development and pair programming. Helping shape the architecture and technical direction of our systems, understanding the “why” behind what we deliver, and looking for opportunities to improve our engineering practices. Providing coaching, guidance, and mentoring to fellow engineers. Engaging in pair programming as a routine part of collaboration. A genuine interest in software craftsmanship and helping others grow. AI & Innovation We have an internal AI interest group and actively explore AI adoption where it enhances team workflows and problem‑solving, based on each team’s context and needs. Job Title: Senior Java & Kotlin Software Engineer Location: London, UK Job Type: Contract Trading as TEKsystems. Allegis Group Limited, Maxis 2, Western Road, Bracknell, RG12 1RT, United Kingdom. No. (phone number removed). Allegis Group Limited operates as an Employment Business and Employment Agency as set out in the Conduct of Employment Agencies and Employment Businesses Regulations 2003. TEKsystems is a company within the Allegis Group network of companies (collectively referred to as “Allegis Group”). Aerotek, Aston Carter, EASi, Talentis Solutions, TEKsystems, Stamford Consultants and The Stamford Group are Allegis Group brands. If you apply, your personal data will be processed as described in the Allegis Group Online Privacy Notice available at (url removed)> To access our Online Privacy Notice, which explains what information we may collect, use, share, and store about you, and describes your rights and choices about this, please go to (url removed)> We are part of a global network of companies and as a result, the personal data you provide will be shared within Allegis Group and transferred and processed outside the UK, Switzerland and European Economic Area subject to the protections described in the Allegis Group Online Privacy Notice. We store personal data in the UK, EEA, Switzerland and the USA. If you would like to exercise your privacy rights, please visit the “Contacting Us” section of our Online Privacy Notice at (url removed)/en-gb/privacy-notices for details on how to contact us. To protect your privacy and security, we may take steps to verify your identity, such as a password and user ID if there is an account associated with your request, or identifying information such as your address or date of birth, before proceeding with your request. If you are resident in the UK, EEA or Switzerland, we will process any access request you make in accordance with our commitments under the UK Data Protection Act, EU-U.S. Privacy Shield or the Swiss-U.S. Privacy Shield

Software Engineer - Active SC, Java, Microservices Up to £550 per day (Inside IR35) London / Remote 6 months My client is an instantly recognisable consultancy who require a strong Software Engineer with Active Security Clearance (SC) and with deep expertise in Java (Spring Boot) to join a large-scale, business‑critical microservices programme. Key Requirements: Proven experience working as a Java Software Engineer on large microservice architectures Active Security Clearance (SC) Strong capability building scalable RESTful APIs and backend services in Java (Spring Boot): Postgres (or other relational SQL databases) with solid understanding of schema design and SQL Docker: Confident containerising and deploying applications Test‑Driven Development (JUnit & Mockito or similar testing frameworks) CI/CD: Hands‑on experience with Jenkins or similar automated pipeline tooling Flexibility working in agile teams and collaborating closely with engineers, product, and design colleagues Nice to have: API Specification using Swagger / OpenAPI Gradle build systems Liquibase (or similar) for database versioning/migrations Kafka or similar event‑streaming platforms React and Typescript If you’re interested in this role, click ‘apply now’ to forward an up-to-date copy of your CV, or call us now. If this job isn’t quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career. Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C’s, Privacy Policy and Disclaimers which can be found at (url removed)

Python Developer - Fixed Income Trading Technology

We are currently recruiting for a Python Developer to join the Fixed Income trading technology team within a leading international investment bank.

This is a core software engineering role focused on building and enhancing production trading systems.

Please note this is not a quant, data engineering or AI/ML role, we are looking for a core Python engineer who enjoys owning components, improving systems, and working closely with the business in a fast-paced trading environment.

You will sit within Front Office Technology supporting Fixed Income trading desks. The team develops and maintains the core platforms that underpin trade capture, execution workflows, pricing distribution, and integration across the trading stack.

You will:

• Take ownership of defined components and services
• Deliver enhancements and new functionalities
• Contribute to design discussions and technical improvements
• Partner directly with traders and senior technologists
• This role would suits someone with solid Python experience who is ready to step up in ownership and influence.

Responsibilities

• Develop production grade Object Oriented Python applications
• Design scalable, resilient Back End services
• Improve system performance and reliability
• Participate in code reviews and engineering standards
• Contribute to testing, CI/CD, and release processes
• Provide 2nd/3rd line support where required

Essential:

• Python development experience within a trading environment
• Strong OO production Python
• Experience building Back End or distributed systems
• Solid understanding of threading, concurrency, and performance optimisation
• Business knowledge of at least one: Fixed Income, FX, Rates, Crypto

Please submit your CV immediately to be considered for this role

White Collar Factory (95009), United Kingdom, London, LondonStaff Software Engineer - Back End

About this role

Do you love shaping the technical landscape and driving innovation across the organisation?

Are you passionate about solving complex business problems and supporting multiple teams toward a shared technical vision?

At Capital One, you’ll be part of a community of technical leaders who drive engineering excellence, foster innovation, and deliver impactful solutions that meet real customer needs.

What You’ll Do

• Own and drive the technical strategy for a significant business outcome or technology domain, spanning multiple teams and influencing the overall technical direction
• Lead and coordinate the efforts of multiple teams, ensuring their collective work aligns with broader business objectives and technology strategy
• Proactively identify emerging patterns, define and evangelise best practices, and establish reusable frameworks that enhance engineering productivity
• Build and maintain strong relationships with key stakeholders, including senior leadership, product owners, and architects
• Represent Capital One in external technical forums, contributing to vendor/industry discussions
• Drive service quality standards and practices for your domain, guiding complex incident resolution
• Develop and advocate for strategies to proactively manage technical debt across multiple teams
• Actively mentor and develop engineers, fostering a culture of continuous learning

What we’re looking for

• Deep expertise in Java
• Deep expertise in system design and distributed architectures
• Track record of leading technical initiatives across multiple teams
• Strong experience with cloud platforms (AWS, Azure, GCP)
• Proven experience setting a multi-team technical vision and strategy
• Strong track record of technical leadership and influence without authority
• Experience driving engineering standards and best practices across organisations
• Experience of steering Communities of Practice or technical forums
• Strong business acumen and ability to translate technical concepts for various audiences

Where and how you’ll work

This is a permanent position based in our London office.

We have a hybrid working model which gives you flexibility to work from our office and from home.

We’re big on collaboration and connection, so you’ll be based in our London office 3 days a week on Tuesdays, Wednesdays and Thursdays.

What’s in it for you

• Bring us all this - and you’ll be well rewarded with a role contributing to the roadmap of an organisation committed to transformation
• We offer high performers strong and diverse career progression, investing heavily in developing great people through our Capital One University training programmes (and appropriate external providers)
• Immediate access to our core benefits including pension scheme, bonus, generous holiday entitlement and private medical insurance - with flexible benefits available including season-ticket loans, cycle to work scheme and enhanced parental leave
• Open-plan workspaces and accessible facilities designed to inspire and support you. Our Nottingham head-office has a fully-serviced gym, subsidised restaurant, mindfulness and music rooms. In London, you can heighten your mood with a run on our rooftop running track or an espresso at the Workshop Coffee café

What you should know about how we recruit

We pride ourselves on hiring the best people, not the same people. Building diverse and inclusive teams is the right thing to do and the smart thing to do. We want to work with top talent: whoever you are, whatever you look like, wherever you come from. We know it’s about what you do, not just what you say. That’s why we make our recruitment process fair and accessible. And we offer benefits that attract people at all ages and stages.

We also partner with organisations including the Women in Finance and Race At Work Charters, Stonewall and upReach to find people from every walk of life and help them thrive with us. We have a whole host of internal networks and support groups you could be involved in, to name a few:

• REACH - Race Equality and Culture Heritage group focuses on representation, retention and engagement for associates from minority ethnic groups and allies
• OutFront - to provide LGBTQ+ support for all associates
• Mind Your Mind - signposting support and promoting positive mental wellbeing for all
• Women in Tech - promoting an inclusive environment in tech
• EmpowHER - network of female associates and allies focusing on developing future leaders, particularly for female talent in our industry
• Enabled - focused on supporting associates with disabilities and neurodiversity

Capital One is committed to diversity in the workplace.

If you require a reasonable adjustment, please contact All information will be kept confidential and will only be used for the purpose of applying a reasonable adjustment.

For technical support or questions about Capital One’s recruiting process, please send an email to

Capital One does not provide, endorse nor guarantee and is not liable for third-party products, services, educational tools or other information available through this site.

Capital One Financial is made up of several different entities. Please note that any position posted in Canada is for Capital One Canada, any position posted in the United Kingdom is for Capital One Europe and any position posted in the Philippines is for Capital One Philippines Service Corp. (COPSSC).

Who We Are

At Capital One, we’re building a leading information-based technology company. Still founder-led by Chairman and Chief Executive Officer Richard Fairbank, Capital One is on a mission to help our customers succeed by bringing ingenuity, simplicity, and humanity to banking. We measure our efforts by the success our customers enjoy and the advocacy they exhibit. We are succeeding because they are succeeding.

Guided by our shared values, we thrive in an environment where collaboration and openness are valued. We believe that innovation is powered by perspective and that teamwork and respect for each other lead to superior results. We elevate each other and obsess about doing the right thing. Our associates serve with humility and a deep respect for their responsibility in helping our customers achieve their goals and realize their dreams. Together, we are on a quest to change banking for good.

White Collar Factory (95009), United Kingdom, London, LondonLead Software Development Engineer - Services

About this role

Capital One’s mission is to change banking for good by bringing humanity, ingenuity and simplicity to banking. Sitting at the core of such values is our Software Engineering department whose primary role is to be an enabler of our ambitions.

Capital One is looking for a Senior Software Development Engineer to join a backend team, based in our London office on a hybrid basis.

Our Engineers are people who lead by example, build strong and valuable relationships and have the confidence to influence at all levels. We are proud of who we are and what we do and want you to join us at this particularly exciting time at Capital One.

What you’ll do

• You will lead a team or cross-functional squad in the delivery of complex and ambiguous projects that support a broader business outcome
• You will take end-to-end responsibility for technical design, implementation, and operational considerations
• Collaborate with engineers, architects, product owners, and stakeholders to ensure successful project outcomes
• You will play a crucial role in supporting the elevation of engineering enablement, excellence, and experience across the broader engineering community
• You will collaborate and contribute to the development and dissemination of standardised and sustainable best practices, tools, patterns, and frameworks that enhance the productivity and quality of engineering efforts business-wide
• Your focus is on a major portion of existing or new team software (e.g., significant component, set of features, mid-size application or service)
• You’ll work to achieve the goals and vision shared by Product Management and your Tribe Leadership
• Innovate within your team, initiative area and contribute within your technical domain

What we’re looking for

• Proven experience in technical leadership, including leading a team or cross-functional squad
• Proven experience working in both backend services and mobile technologies
• Exceptional programming skills and knowledge of building APIs using modern OO languages preferably Java, SOLID principles, SOA, HTTP and REST
• Experience with AWS and strong understanding of cloud-based development
• Extensive, demonstrable knowledge of designing architectures that are secure and perform at scale
• You’re able to effectively communicate and work collaboratively across engineering to maximise inner-sourcing opportunities and reduce waste
• Proven experience ability to deliver high quality applications at scale
• An advocate for quality and the ability to support the team, leveraging approaches such as Pair Programming, TDD and BDD

Where and how you’ll work

This is a permanent position and will be based in our London office.

We have a hybrid working model which gives you flexibility to work from our offices and from home.

We’re big on collaboration and connection, so you’ll be based in our London office 3 days a week on Tuesdays, Wednesdays and Thursdays.

What’s in it for you

• Bring us all this - and you’ll be handsomely rewarded with a role contributing to the product roadmap for an organisation committed to transformation
• We’re continuing our journey into the public cloud and have problems of scale, security, availability and performance for you to help solve
• We love continuous learning and that’s why we give you 10% of your time to work on cutting edge innovative projects that shape the way we will work in the future
• We offer high performers strong and diverse career progression, investing heavily in developing great people through our Capital One University training programmes (and appropriate external providers)
• Immediate access to our core benefits including pension scheme, bonus, generous holiday entitlement and private medical insurance - with flexible benefits available including season-ticket loans, cycle to work scheme and enhanced parental leave
• Open-plan workspaces and facilities designed to inspire and support you. Our Nottingham head-office has a fully-serviced gym, subsidised restaurant, mindfulness and music rooms. In London, you can heighten your mood with a run on our rooftop running track or an espresso at the Workshop Coffee café

What you should know about how we recruit

We are committed to creating a level playing field and seek to create teams that are representative of our customers and the communities we serve. We’d love to hear from you if you identify with a typically under-represented group in our industry and are particularly keen to hear from women and ethnic minority candidates.

We pride ourselves on hiring the best people, not the same people. Building diverse and inclusive teams is the right thing to do and the smart thing to do. We want to work with top talent: whoever you are, whatever you look like, wherever you come from. We know it’s about what you do, not just what you say. That’s why we make our recruitment process fair and accessible. And we offer benefits that attract people at all ages and stages.

We also partner with organisations including the Women in Finance and Race At Work Charters, Stonewall and upReach to find people from every walk of life and help them thrive with us. We have a whole host of internal networks and support groups you could be involved in, to name a few:

• REACH - Race Equality and Culture Heritage group focuses on representation, retention and engagement for associates from minority ethnic groups and allies
• OutFront - to provide LGBTQ+ support for all associates
• Mind Your Mind - signposting support and promoting positive mental wellbeing for all
• Women in Tech - promoting an inclusive environment in tech
• EmpowHER - network of female associates and allies focusing on developing future leaders, particularly for female talent in our industry

Capital One is committed to diversity in the workplace.

If you require a reasonable adjustment, please contact All information will be kept confidential and will only be used for the purpose of applying a reasonable adjustment.

For technical support or questions about Capital One’s recruiting process, please send an email to

Capital One does not provide, endorse nor guarantee and is not liable for third-party products, services, educational tools or other information available through this site.

Capital One Financial is made up of several different entities. Please note that any position posted in Canada is for Capital One Canada, any position posted in the United Kingdom is for Capital One Europe and any position posted in the Philippines is for Capital One Philippines Service Corp. (COPSSC).

Who We Are

At Capital One, we’re building a leading information-based technology company. Still founder-led by Chairman and Chief Executive Officer Richard Fairbank, Capital One is on a mission to help our customers succeed by bringing ingenuity, simplicity, and humanity to banking. We measure our efforts by the success our customers enjoy and the advocacy they exhibit. We are succeeding because they are succeeding.

Guided by our shared values, we thrive in an environment where collaboration and openness are valued. We believe that innovation is powered by perspective and that teamwork and respect for each other lead to superior results. We elevate each other and obsess about doing the right thing. Our associates serve with humility and a deep respect for their responsibility in helping our customers achieve their goals and realize their dreams. Together, we are on a quest to change banking for good.

White Collar Factory (95009), United Kingdom, London, LondonSenior Software Development Engineer - Services

About this role

We are seeking a Senior Software Engineer who can walk in the shoes of our users, communicate & collaborate with teams in Business, Technology and Operations, bringing a passion for using software and technology to create impactful solutions.

To be successful in this role, you will have an understanding of the benefits of business processes automation to enable user efficiency, the importance of well-governed solution development, and how to balance these needs to produce easy-to-use software.

You are able to seamlessly switch from deep diving users’ needs and technical challenges, to discussing solutions and prioritisation. You’re not afraid to question stakeholder expectations, using your fantastic influencing skills to drive consensus on requirements, bringing it all together into an achievable, impactful solution that creates business value.

What you’ll do

• Design, develop, test and maintain a range of internal facing software products and solutions that automate Business processes
• Work to achieve the goals and vision shared by Product Management and your team Leadership
• Be an advocate for governance, documentation and process, ensuring that everything we build meets our high standards whilst providing a frictionless user experience
• Make recommendations to stakeholders and drive a consensus of agreement for your solutions. You’ll also be great at keeping them in the loop
• Provide technical leadership and innovate within your team.

What we’re looking for

• A passion for software engineering and a track record of delivering solutions in an efficient and maintainable manner
• Exceptional programming skills and knowledge of building APIs using modern OO languages preferably Java, SOLID principles, SOA, HTTP and REST
• Demonstrable knowledge of creating architectural designs that meet the business need
• Proven experience in technical leadership, with a passion for mentoring and nurturing engineers
• You bring a user focussed mindset. An ability to capture process requirements in order to rapidly refine a solution
• You’re able to effectively communicate and work together across engineering to maximise inner-sourcing opportunities and reduce waste
• Experience and knowledge in Cloud/AWS technologies.

What you’ll get to learn (any previous experience would be advantageous)

• Solving real world problems and being comfortable working in a complex regulated environment
• Gain the opportunity to become an expert in writing and optimising code with the power of AI code assistants (GitHub Copilot).

Where and how you’ll work

This is a permanent position based in our London office.

We have a hybrid working model which gives you flexibility to work from our offices and from home.

We’re big on collaboration and connection, so you’ll be based in our London office 3 days a week on Tuesdays, Wednesdays and Thursdays.

What’s in it for you

• Bring us all this and you’ll be rewarded with a role contributing to the product roadmap for an organisation committed to transformation
• We’re continuing our journey into the public cloud and have problems of scale, security, availability and performance for you to help solve
• We love continuous learning and that’s why we give you 10% of your time to work on cutting edge innovative projects that shape the way we will work in the future
• We offer high performers strong and diverse career progression, investing heavily in developing great people through our Capital One University training programmes (and appropriate external providers)
• Immediate access to our core benefits including pension scheme, bonus, generous holiday entitlement and private medical insurance - with flexible benefits available including season-ticket loans, cycle to work scheme and enhanced parental leave
• Open-plan workspaces and facilities designed to inspire and support you. Our Nottingham head-office has a fully-serviced gym, subsidised restaurant, mindfulness and music rooms. In London, you can heighten your mood with a run on our rooftop running track or an espresso at the Workshop Coffee café

Capital One is committed to diversity in the workplace.

If you require a reasonable adjustment, please contact All information will be kept confidential and will only be used for the purpose of applying a reasonable adjustment.

For technical support or questions about Capital One’s recruiting process, please send an email to

Capital One does not provide, endorse nor guarantee and is not liable for third-party products, services, educational tools or other information available through this site.

Capital One Financial is made up of several different entities. Please note that any position posted in Canada is for Capital One Canada, any position posted in the United Kingdom is for Capital One Europe and any position posted in the Philippines is for Capital One Philippines Service Corp. (COPSSC).

Who We Are

At Capital One, we’re building a leading information-based technology company. Still founder-led by Chairman and Chief Executive Officer Richard Fairbank, Capital One is on a mission to help our customers succeed by bringing ingenuity, simplicity, and humanity to banking. We measure our efforts by the success our customers enjoy and the advocacy they exhibit. We are succeeding because they are succeeding.

Guided by our shared values, we thrive in an environment where collaboration and openness are valued. We believe that innovation is powered by perspective and that teamwork and respect for each other lead to superior results. We elevate each other and obsess about doing the right thing. Our associates serve with humility and a deep respect for their responsibility in helping our customers achieve their goals and realize their dreams. Together, we are on a quest to change banking for good.

Southend / Reading (Hybrid)
3 Month Rolling Contract
£450/day (Outside IR35)

Developer-in-Test needed with active SC Security Clearance and Java coding skills. 3 Month Rolling Contract based in either Southend (Essex) or Reading (Hybrid).

Hybrid Working - 3-4 days/week remote (WFH), and 1-2 days/week working on-site from the office. Start ASAP in March 2026.

A chance to work with a leading global IT and Digital transformation business specialising in Government projects:

• Developer-in-Test / SDET with strong Java coding + test automation skills.
• Government / (url removed) projects experience strongly preferred.
• Test automation tools experience -eg- Selenium, Serenity or Cucumber.
• Continuous Integration tools -eg- Jenkins, Stash, Hudson, Github.
• Testing UI and Web Services systems including end-to-end and in isolation using Mocks.
• Experience with large datasets + appreciation of data isolation in a multi-tenanted SAAS platform environments.
• Writing / maintaining SQL insert, update + delete statements
• Using Test Management tools like Jira for planning, test execution + reporting.
• AWS Cloud environments + automated infrastructure.
• Advantageous skills: JavaScript, JMeter scripting, Performance Testing, Agile/Scrum.
• SC Security Clearance is essential for this position.

• Location: London - 3 days a week onsite
• Job Type: Full-time
• Salary: Competitive - up to £120k base + benefits

A new exciting permanent, Vice President level, Senior Software Developer to join an exciting growing GIT - CMI - Risk FX IT department with a global leading investment bank.This senior software development position requires a candidate with outstanding skills in C# and TypeScript/React, and a robust understanding of pricing models and risk analytics for both vanilla and exotic FX derivatives. The role involves close collaboration with business analysts, traders, and software engineers to ensure seamless integration into real-time trading platforms.

Day-to-day of the role:

• Design and implement pricing and risk analytics tools for FX cash trades and options, including exotic and structured products.
• Integrate and support the optimization of quantitative models in collaboration with quants and traders.
• Maintain and enhance low-latency infrastructure for real-time risk and PnL calculations.
• Conduct back testing and performance analysis of models and trading strategies.
• Provide technical guidance and support across the trading floor on model behaviour and system performance.
• Liaise with technology and infrastructure teams to ensure robust deployment and monitoring of analytic tools.
• Enhance the FX Options Risk Viewer UI in collaboration with traders and other IT team members.
• Contribute to the continuous improvement of coding standards, testing frameworks, and development practices.

Required Skills & Qualifications:

• A degree in an IT-related subject with substantial experience in software development.
• Highly experienced in C#, TypeScript/React, and Quant Library integration.
• Solid understanding of mathematics as applied to derivatives risk and pricing.
• Excellent written and verbal communication skills in English.
• Experience working with traders, quants, and risk managers in an investment-banking environment.
• Front office trading, pricing in FX within a bank, investment management environment would be desired

Benefits:

• Competitive salary and benefits package.
• Opportunities for professional growth and development.
• Dynamic and collaborative working environment.

Legal and Regulatory Responsibilities:

• Comply with all applicable legal, regulatory, and internal Compliance requirements.
• Maintain appropriate knowledge to ensure full qualification for the role.
• Complete all mandatory training as required to attain and maintain competence.

How to apply:

To apply for this Senior Software Developer position, please submit your CV to be considered immediately.

Java Developer - multiple roles

£510/day Inside IR-35

6 month contract

Active SC required

Remote with occasional travel to London for client meetings only - expensable

We are looking for experienced fullstack Java Software Engineers to support projects across UK Government and Law Enforcement. You’ll work in multidisciplinary teams delivering secure, reliable and scalable systems. The role is hands-on and focused on building high quality software using modern engineering practices.

What you’ll do

You’ll design, build and maintain Java based microservices, applying test driven development and following established engineering standards. You’ll work with technologies including Java, Spring Boot, Postgres, Kafka, Docker, React and AWS. You’ll contribute to CI/CD pipelines, ensure non-functional requirements are met and collaborate with colleagues across engineering, analysis and design.

Essential experience

• Java and Spring Boot
• Building and maintaining microservice based systems
• Postgres or other relational SQL databases
• Test-driven development (JUnit, Mockito or similar)
• Docker and containerisation
• CI/CD pipelines (Jenkins or similar)
• Working in agile, multi-disciplinary teams

Desirable experience

• Kafka
• Liquibase or similar migration tooling
• Swagger/OpenAPI
• Gradle
• React
• TypeScript

Reasonable Adjustments:

Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients.

If you need any help or adjustments during the recruitment process for any reason, please let us know when you apply or talk to the recruiters directly so we can support you.

A large financial services organisation is seeking a Senior Backend Engineer to join a high-performing digital engineering function. This role sits within a customer-facing mobile product environment, delivering secure, scalable solutions at scale.

Working across two product teams alongside a dedicated DevOps function, you will play a key role in shaping backend architecture, driving engineering standards, and ensuring scalability/security.

Key Responsibilities

• Design, build and maintain secure, scalable backend microservices (Node.js or JVM-based frameworks)
• Contribute to backend architecture decisions aligned to clean architecture principles
• Support and integrate with a React Native mobile application environment
• Drive performance, resilience and security best practices across backend services
• Implement and champion strong testing strategies (including TDD) and high-quality code reviews
• Collaborate closely with DevOps on CI/CD pipelines, Docker and AWS-based deployments
• Mentor engineers and contribute to continuous improvement across engineering practices
• Manage technical debt and ensure engineering decisions align with business and customer outcomes

Key Requirements

• Strong commercial experience with JavaScript/TypeScript
• React Mandatory
• Backend expertise in Node.js or Java (JVM-based frameworks)
• Proven experience designing and building REST-based microservices architectures
• Strong understanding of scalability, security and system design in production environments
• Experience working on mobile-backed systems, ideally with exposure to React Native projects
• Familiarity with AWS, Docker and CI/CD pipelines
• Strong engineering fundamentals and a passion for clean, maintainable architecture
• Exposure to or interest in applying AI within backend systems is highly advantageous

Robert Walters Operations Limited is an employment business and employment agency and welcomes applications from all candidates

Up to £550 per day - Inside IR35

London / Remote

6 months

My client is an instantly recognisable consultancy who require Front End Developers with Active SC Clearance to join a business-critical programme for an end client within the Public Sector.

Key Requirements:

• Proven commercial experience working as a Front-End Developer within the Public Sector.
• Active SC Clearance.
• NPPV3 Clearance eligibility.
• Hands-on React and TypeScript experience across large microservice architectures.
• Proficiency in test-driven development (e.g., JUnit, Mockito) and building robust, well-tested applications.
• Skilled in containerisation with Docker and relational databases such as Postgres (Liquibase exposure beneficial).
• Experienced with CI/CD pipelines and modern DevOps practices (e.g., Jenkins or similar tooling).
• Familiarity with Swagger/OpenAPI, Gradle, Liquibase, Kafka, Java (Spring Boot).
• Comfortable working in Agile environments and collaborating across multidisciplinary teams.
• Excellent communication skills.

Nice to have:

• Active NPPV3 Clearance.
• Immediate availability.

Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C’s, Privacy Policy and Disclaimers which can be found at hays.co.uk

Software Engineer - Active SC, Java, Microservices

Up to £550 per day (Inside IR35)

London / Remote

6 months

My client is an instantly recognisable consultancy who require a strong Software Engineer with Active Security Clearance (SC) and with deep expertise in Java (Spring Boot) to join a large-scale, business-critical microservices programme.

Key Requirements:

• Proven experience working as a Java Software Engineer on large microservice architectures
• Active Security Clearance (SC)
• Strong capability building scalable RESTful APIs and backend services in Java (Spring Boot):
• Postgres (or other relational SQL databases) with solid understanding of schema design and SQL
• Docker: Confident containerising and deploying applications
• Test-Driven Development (JUnit & Mockito or similar testing frameworks)
• CI/CD: Hands-on experience with Jenkins or similar automated pipeline tooling
• Flexibility working in agile teams and collaborating closely with engineers, product, and design colleagues

Nice to have:

• API Specification using Swagger / OpenAPI
• Gradle build systems
• Liquibase (or similar) for database versioning/migrations
• Kafka or similar event-streaming platforms
• React and Typescript

If you’re interested in this role, click ‘apply now’ to forward an up-to-date copy of your CV, or call us now.If this job isn’t quite right for you, but you are looking for a new position, please contact us for a confidential discussion about your career.

Hays Specialist Recruitment Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept the T&C’s, Privacy Policy and Disclaimers which can be found at hays.co.uk

Junior Power Platform Developer (Remote)

• Fully remote / home-based role
• Reputable and growing organisation
• Salary up to £29,000 plus benefits

A growing London-based business is seeking a Junior Power Platform Developer to join its established in-house development team. This is a fully remote position, with occasional onsite attendance required for team meetings (approximately once every couple of months).

This is an excellent opportunity to join a well-established organisation that places strong emphasis on continuous training, professional development, and career progression.

The roleWorking closely with the senior development team, you will be responsible for:

• Building and supporting Power Apps solutions (both Model-Driven and Canvas Apps)
• Integrating data sources and third-party APIs
• Engaging with stakeholders to understand business requirements and identify areas for improvement
• Participating in peer code reviews and contributing to best practice development standards

About youTo be considered for this role, you should have:

• Previous commercial experience with Microsoft Power Platform development (Power Apps and Power Automate)
• Experience building Canvas Apps
• Experience creating and maintaining Power Automate flows
• Knowledge and understanding of Azure, including Azure Logic Apps and automation

This role would suit a motivated junior developer looking to build on their existing Power Platform skills within a supportive and forward-thinking team.

Mobile Applications, React Native, Node.JS, Typescript.

We are seeking an Engineering Manager with a background in the design and build of enterprise Mobile applications primarily in React Native and Node.JS. The role is 75% team management and 25% hands-on.

Responsibilities:

• Lead & develop engineers: Provide line management for 2-5 engineers, coach less-experienced developers, build a collaborative team culture.
• Drive technical delivery & software quality: Contribute hands-on to coding (React Native, JavaScript/TypeScript, microservices), guide clean architecture practices, manage technical debt, and ensure high-quality, secure, maintainable software.
• Promote effective agile practices: Improve team effectiveness through inspection & adaptation, support Scrum ways of working, encourage pair programming, small batch delivery, and strong CI/CD habits.
• Cross-team leadership & alignment: Foster alignment across teams, remove blockers, ensure dependencies are well understood, facilitate discussions, and drive shared strategic goals.
• Balance technical strategy with business value: Make decisions that connect engineering choices to business outcomes; ensure software is customer-focused, resilient, secure, and contributes high value quickly.

The company operate a hybrid working model with typically one team day per week in the London office.

The role comes with a significant benefits package including a generous pension and annual bonus.