White Collar Factory (95009), United Kingdom, London, LondonSenior Software Development Engineer - Velocity Black UK

Velocity Black by Capital One harnesses the power of artificial intelligence, the warmth of human experts and the convenience of the latest interfaces to help high-performance people actualize the full potential of their lives. It’s concierge, reimagined for the digital age.

By harnessing 24/7 chat, AI, and mobile payments, we help our customers do more and be more in the digital age. From access to the hottest restaurants to guaranteed upgrades at the world’s finest resorts. Make a custom request through the app and you will be chatting to our team within 1 minute, 24/7/365.

What unites us are the values we share: the relentless pursuit and celebration of excellence, actualising the full potential of our lives, and impacting the world in a positive way.

We are looking for talented software engineers to join our global Velocity Black by Capital One engineering team, with the opportunity to specialise in frontend, backend or work in a full stack capacity. As a Senior Software Development Engineer, you’ll have the opportunity to be on the forefront of driving a major transformation with the marrying of these two innovative companies. Joining a startup deeply invested in technology with Capital One’s entrepreneurial spirit and customer-first, tech-led culture, creates an environment where engineers can continue to disrupt the status quo to develop best-in-class customer experiences for the digital age.

You will work in a small but passionate team, and have a great deal of autonomy. You should be self-driven, willing to take ownership, ask the right questions and seek knowledge when necessary. If you think innovatively, and like to embrace bleeding edge technology, with a pragmatic approach, you will enjoy working here.

The service we offer and build upon is unlike anything ever built before, and our product is rapidly evolving. Velocity Black is our core product, built in React Native and offering exclusive access and unbeatable word-wide service across Travel, Experiences, Luxury Goods and Dining. Our internal and bespoke request management platform, Gravity, is built with React and Node.js micro services, virtually augmenting our expert customer service agents with AI, delivering the unrivalled personal service our members expect and love.

Explore our tech stack: https://stackshare.io/velocity-black/velocity-black

What you’ll do

• Deliver end to end functionality from ideation to delivery focused on the functionality surrounding the ability to make a request and message back and forth while helping to define and adopt best practices
• Work in a fast-paced, collaborative technical environment
• Utilise programming languages and tools like React Native, React, Node.js, JavaScript, TypeScript, micro services, AI, ML, open source frameworks, DevOps, large data sets, and more
• Perform software development leveraging a test-driven development pattern
• Collaborate with digital product managers, and deliver robust cloud-based solutions that drive powerful experiences to help high-performance people actualize the full potential of their lives
• Collaborate with and across Agile teams to design, develop, test, implement, and support technical solutions in full-stack development tools and technologies
• Share your passion for staying on top of tech trends, experimenting with and learning new technologies, participating in internal & external technology communities, mentoring other members of the engineering community

What we’re looking for

• Experience with influencing technical decisions with a tech team in an agile environment
• Proven experience in software development using JavaScript or TypeScript
• Experience with testing software (automated tests or Test Driven Development)
• Previous experience working with AWS, GCP, Microsoft Azure or another cloud service
• Have a passion for continued learning of the latest JavaScript and ES versions and trends

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

• An in-depth understanding and experience working with the cloud/AWS and the opportunities that it brings
• Solving real world problems and being comfortable working in a complex regulated environment

Where and how you’ll work

This is a permanent position based in our London office.

We have a hybrid working model, so you’ll be based in our offices 3 days a week on Tuesdays, Wednesdays and Thursdays, and can work from home on Monday and Friday.

Many of our associates have flexible working arrangements, and we’re open to talking about an arrangement that works for you.

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

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

Capital One is committed to diversity in the workplace.

If you require a reasonable adjustment, please contact ukrecruitment@capitalone.com 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 Careers@capitalone.com

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.

Role: Software Engineer

Contract length: Initial 4 months

Work style: 2 days a week in office

Description

Global Animal Health client is looking to accelerate adoption of AI capabilities (specifically persona generation and AI-enabled workflows) within their R&D and Regulatory divisions, using their internal GPT platform.

Key Responsibilities

• Persona Creation & Management
  • Support teams in building and consuming persona-based services within their internal GPT platform.
  • Help promote and scale persona adoption across the business.
• AI Platform Integration
  • Work with product teams building custom UIs and services that require consuming AI platform APIs.
  • Not an AI Engineer role, more focused on integrating AI into software workflows.
• Regulatory Use Cases
  • Support automation of regulatory dossier creation.
  • Help populate product information and streamline submission processes to regulatory authorities.
• Mini Solutions / ChatGPT Extensions
  • Build small-scale solutions inside their internal GPT chat platform.
  • Collaborate with product teams on in-flight custom builds to improve consumption of AI services.

Skills

• API
• AI
• Integration
• GPT
• Deployment
• Python
• Microservices

Job Title: AI Integration Engineer

Location: Hampshire, UK

Job Type: Contract

Trading as TEKsystems. Allegis Group Limited, Maxis 2, Western Road, Bracknell, RG12 1RT, United Kingdom. No. 2876353. 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 https://www.allegisgroup.com/en-gb/privacy-notices.

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 https://www.allegisgroup.com/en-gb/privacy-notices.

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 https://www.allegisgroup.com/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.

• Location:Brick Lane, London
• Days in the Office:2 days per week
• Job Title:Senior Engineer
• Length of Contract:6 months, with potential extension

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

• 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

SeniorDeveloper(Node/React)

Areyouapragmatic,innovative,andself-motivatedproblemsolverwithapassionforbuildingscalable,high-performingsoftware?We’relookingforaSeniorFullStackEngineer,withstrongskillsinNodeandReact,tojoinahigh-performingproductteamworkingonaglobal,high-trafficeCommerceplatformhandlingthousandsoftransactionsdaily.

You’llplayakeyroleindesigninganddevelopingend-to-endsolutions,collaboratingcloselywithbothtechnicalandbusinessteamstodelivernewfeaturesthatdrivegrowthandenhancethecustomerexperience.

WhatYou’llDo

• Buildandmaintainrobust,scalableapplicationsacrossthefullstack(Node/React/TypeScript)
• Collaborateinanagileteamenvironmenttodeliverclean,maintainable,andtestablecode
• Influencearchitecturaldecisionsandtechnologychoices
• OptimiseFrontEndandBackEndperformancetoensurefast,seamlessuserexperiences
• Contributetocontinuousimprovementefforts,introducingnewideasandtechnologies

WhatYou’llBring

• ProvenexperienceasaFullStackEngineerorsimilarrole
• ExpertiseinReact,JavaScript/TypeScript,HTML,CSS,andresponsivedesignprinciples
• StrongunderstandingofBackEndtechnologiesandbestpractices
• Passionforwritingclean,well-testedcode
• Experiencewithcloudplatforms(AWS,Azure,orGCP)
• Excellentcommunicationskillsandtheabilitytoexplaintechnicalideasclearly
• Amindsetfocusedonscalability,maintainability,andcontinuouslearning
• MustbeproficientinNodeandReact

NicetoHave

• DegreeinComputerScienceorarelatedfield
• ExperienceineCommercesectors
• FamiliaritywithCI/CDtoolssuchasJenkinsorGitHubActions

WhyYou’llLoveItHere

• Workonaproductwithglobalreachandreal-worldimpact
• Haveavoiceinhowthingsarebuilt-yourideasmatter
• Collaborative,forward-thinkingengineeringculture
• Flexibleworkingenvironmentwithopportunitiesforgrowth

Location:London

Salary:£80k/perannum

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.

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. TPBN1\_UKTJ

Job Title: Full-Stack Java Software Engineer

Location: London - Hybrid

Day Rate: £600 per day - Inside IR35

Clearance: SC Clearance required

The Role:

We are seeking high-calibre Full-Stack Java Software Engineers to join a growing delivery team supporting UK clients. This is an opportunity to work on complex, mission-critical systems within secure environments, contributing to innovative solutions that address some of the most challenging problems in the public sector.

You will be part of a collaborative, multi-disciplinary enterprise delivery team, taking a hands-on role in designing and building robust, scalable, and secure software solutions. The role requires not only strong coding expertise but also a solid understanding of industry best practice, engineering standards, and agile delivery.

Key Responsibilities:

Design, develop and maintain full-stack Java-based applications within secure environments.

Deliver high-quality, scalable and maintainable solutions aligned to industry best practice.

Contribute to solution design, ensuring non-functional requirements (performance, security, scalability, resilience) are met.

Work effectively within agile delivery teams, supporting continuous improvement and engineering excellence.

Build and maintain strong CI/CD pipelines and automated deployment processes.

Collaborate with architects, DevOps engineers, and cross-functional specialists to deliver balanced, high-quality enterprise solutions.

Support integration with APIs, messaging platforms, databases, and cloud services.

Technical Environment:

Java

React

PostgreSQL

Kafka

Elasticsearch

AWS

Ansible

RESTful services

Docker

API Gateways

JavaScript

MongoDB

SQL

Essential Skills & Experience:

Strong commercial experience as a full-stack Java Software Engineer within enterprise environments.

Proven experience delivering secure, scalable solutions in agile teams.

Experience working with modern DevOps practices, CI/CD pipelines and containerisation.

Strong understanding of API integration and microservices architectures.

Experience working within secure or government-regulated environments.

Security Requirements:

Active SC clearance preferred.

This is an excellent opportunity to work on meaningful, high-impact programmes within the UK, contributing to innovative solutions while continuing to develop your technical expertise in a collaborative and forward-thinking environment.

TPBN1_UKTJ

Mid-Level Shopify Developer (Fully Remote)

About Us

We are a fast-growing / well established digital agency delivering high-performance eCommerce solutions for ambitious brands across DTC, retail, and lifestyle sectors. Our clients include scaling startups and establishedhigh street brands, giving our team exposure to recognised names and high-traffic storefronts.

We blend strategy, design, and development to build scalable Shopify experiences that drive measurable growth.

Were looking for aMid-Level Shopify Developerto join our fully remote team and help bring beautiful, high-converting storefronts to life.

The Role

As a Shopify Developer, youll work closely with designers, strategists, and project managers to build, customise, and optimise Shopify stores for a diverse range of clients including well-known high street brands and fast-growing eCommerce disruptors.

Youll play a key role in translating design and UX requirements into responsive, high-quality Shopify themes and features balancing performance, scalability, and clean code standards.

Key Responsibilities

• Develop, customise, and maintain Shopify and Shopify Plus storefronts
• Build custom themes using Liquid, HTML, CSS/SCSS, and JavaScript
• Implement designs from Figma/Adobe XD into responsive Shopify themes
• Develop custom sections, blocks, and Shopify app integrations
• Optimise performance, accessibility, and SEO best practices
• Troubleshoot bugs and resolve technical issues efficiently
• Collaborate with designers, marketers, and strategists to improve UX and conversion
• Contribute to projects for established high street brands, ensuring enterprise-level quality and performance
• Support QA and deployment processes across multiple client projects
• Contribute to internal documentation and development best practices

Required Skills & Experience

• 24 years of Shopify development experience
• Strong proficiency in Liquid templating language
• Solid front-end skills (HTML5, CSS3/SCSS, JavaScript ES6+)
• Experience building custom Shopify themes (not just modifying pre-built themes)
• Familiarity with Shopify 2.0 architecture (sections everywhere, JSON templates)
• Experience integrating third-party apps and APIs
• Strong understanding of responsive design principles
• Git/version control experience
• Ability to manage multiple client projects simultaneously

Nice to Have

• Experience with Shopify Plus features (Scripts, Functions, B2B)
• Familiarity with headless commerce setups
• Experience with React or Vue
• Knowledge of performance optimisation tools (Lighthouse, GTmetrix)
• Understanding of CRO principles
• Exposure to Klaviyo, GA4, or other eCommerce marketing tools

What Were Looking For

• Strong attention to detail and clean coding standards
• Proactive problem solver with a growth mindset
• Comfortable working in a fast-paced agency environment
• Excellent communication skills (written and verbal)
• Ability to work independently in a remote setting
• Strong time management and accountability

What We Offer

• Fully remote working
• Flexible hours
• Competitive salary (based on experience)
• Opportunity to work alongside recognised high street brands
• Exposure to diverse, high-growth eCommerce businesses
• Clear progression pathway to Senior Developer
• Collaborative, supportive team culture
• Ongoing learning and development opportunities

There is a 2 stage interview process - apply now to be considered, interview slots now available!

Backend Software Engineer / Developer (Java AWS Spring) London / WFH to £90k

Are you a backend focussed technologist who enjoys building systems from scratch?

You could be progressing your career at a global, prime broker that is replacing the legacy infrastructure used across capital markets with a new cloud-native clearing and custody system, designed for today’s complex global markets. The company is experiencing great success in the US and is expanding into the UK.

As a Backend Software Engineer you will join a small team responsible for building a brand new Futures Trading platform for the UK, primarily using Java with a focus on backend development but also with some React UI work.

You’ll be working on complex and challenging, highly available mission critical systems in collaboration with Product Managers to understand and define new features and coordinating with other developers with the goal of writing software as one, supported to learn and develop your skills by the senior engineer.

Location / WFH:

You’ll join a small, highly talented and collaborative team in the London, City office three days a week with flexibility to work from home the other two.

About you:

• You are degree educated in Computer Science or closely related discipline
• You have commercial backend Java development experience including Spring, Spring Boot, microservices
• You have a good knowledge of AWS
• You also have an appreciation of UI development with TypeScript / React
• You take in pride in producing clean, high quality code
• You’re familiar with modern software engineering tools such as Kafka, Kubernetes, MongoDB
• You are collaborative and motivated to learn about financial markets and advance your technical knowledge

What’s in it for you:

As a Backend Software Engineer you receive a competitive package:

• Salary to £90k
• Pension
• Hybrid working
• Influential role at a growing company with excellent career progression and interesting work

Apply now to find out more about this Backend Software Engineer / Developer (Java AWS Spring Boot) opportunity.

At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn. We’re an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The clients we work with share our values.

Join CMC MarketsQuantitative Strategiesteamwithin the Pricing and Risk area, whereyoullwork on our low latency, high-frequency trading platform. You will usecutting-edgeJavaprogramming techniquesso experience in this area is essential.

As a Senior Developer,youllnot only code but also take on key design responsibilities, shaping impactful projects.You’llmentor junior members of the team, driving innovation in a fast-paced, high-stakes environment. Ifyoureready to make a real impact on global markets,wedlove to hear from you!

Please note that this is an onsite role that will require you to work within our London office (near Liverpool street) 5 days on site per week.

WhatYoullDo

• Expert Level Java Development:You will applyyourin-depthknowledge of the Java programming language(21+)to implement world class trading and pricing systems.

• Collaborative Development:Design and develop innovative pricing and risk components for our market-making operations,impactinga wide array of asset classes.

• Cross-Functional:Partner with financial engineering, quant teams, and other key business groups to ensure seamless product delivery and support.

• Hands-On Problem Solving:Work closely with Front Office users and Business Operations to quickly troubleshoot and resolve issues, minimizing downtime and keeping the business running smoothly.

• Continuous Learning:Stay ahead of the curve with access to the latest training in regulatory and legislative areas to ensureyou’realways on top of your game.

• Impactful Mentorship:Provide mentorship and guidance to junior developers, shaping the future talent within our Pricing and Risk group.

• Innovation with a Purpose:Create custom maintenance and reporting tools that drive efficiency and improve decision-making across the firm.

WhyYoullLove It Here

• Influence the Business:Your work will directlyimpactcritical trading and risk management functions, giving you high visibility and the chance to shape the future of the firms technology.

• Exposure to the Trading Floor:Get first-hand experience on the trading floor, working closely with users to develop solutions that directly address business needs.

• Dynamic Team Environment:Join a highly collaborative team that values feedback and innovation, where your voice is heard, and your ideas matter.

• Learning & Development:Werecommitted to your personal and professional growth, offering ongoing training and certification opportunities tailored to the ever-changing financial landscape.

• Career Advancement:Opportunities for career growth, including leadership roles, are encouraged and supported by our mentorship programs.

WhatWereLooking For

• Strong Java development experiencewithin financial systems, ideally in pricing or risk-related applications.

• Not just a coder, but someonewho also focuses on applying best practices, designpatternsand principles to develop scalable,maintain ableand high-quality code.

• Someone who enjoysmaths/logic problems and challenges

• Familiarity with electronic trading order routing, broker connectivity and FIX would bevery beneficial

• Knows or willingness to learnscripting languages to aid rapid development

• Experience acrossone or moreasset classes such as Equities, FX, Commodities, and Derivatives.

• Familiarity with Front Office trading systems and a deep understanding of market-making environments.

• Ability to quickly respond to critical issues in a fast-paced trading environment.

• Experience mentoring and guiding junior team members.

• Excellent communication skills and the ability to build strong working relationships with stakeholders.

• Minimum 2:1 degree in a numerate subject such as Computer Science, Mathematics,Physicsor equivalent.

CMC Markets is an equal opportunities employer and positively encourages applications from suitably qualified and eligible candidates regardless of gender, sexual orientation, marital or civil partner status, gender reassignment, race, colour, nationality, ethnic or national origin, religion or belief,disabilityor age.

Lead Full Stack Engineer | Hybrid - 2 days onsite, London | £100,000 - £120,000 DOE

We’re partnering with a high-growth B2B PropTech SaaS business that’s transforming how property professionals access and leverage land data across the UK.

In just a few years, the company has built one of the most advanced property data platforms in the market, integrating thousands of data sources and processing terabytes of information with sub-24-hour latency. With strong product-market fit, continued revenue growth, and ambitious scaling plans, they’re now hiring a Lead Full Stack Engineer to help shape the next phase of the platform.

This is a hands-on leadership role within an engineering-led, collaborative environment, ideal for someone who enjoys balancing architectural ownership with meaningful day-to-day coding.

The Role

As Lead Full Stack Engineer, you’ll combine deep technical expertise with strong leadership and architectural oversight. You’ll drive technical excellence across the organisation, mentor engineers, and influence the long-term direction of the platform.

This is not a purely managerial role, you’ll contribute to the codebase daily while also shaping standards, systems, and engineering culture.

What You’ll Be Doing

Technical Leadership & Architecture

• Provide architectural oversight across frontend, backend, and data infrastructure
• Set engineering standards and champion best practices in scalability, reliability, and maintainability
• Lead complex system design discussions, balancing speed, scope, and long-term scale
• Shape the technical roadmap alongside product and data leaders

Hands-On Engineering

• Develop high-quality front-end features using React (Vite) + Tailwind
• Design and ship scalable, type-safe APIs using Node.js, Express, and tRPC
• Optimise and maintain PostgreSQL databases and query performance
• Collaborate with the data team to evolve Elasticsearch-driven architecture
• Own delivery of complex features from discovery through deployment and monitoring

Team Leadership & Cross-Functional Impact

• Mentor senior and mid-level engineers through pairing, reviews, and coaching
• Foster a high-performance engineering culture built on ownership and continuous improvement
• Work closely with product, design, and data stakeholders to ensure technical input shapes roadmap decisions
• Translate complex technical challenges into clear, actionable insights for non-technical teams

What We’re Looking For

• 7+ years’ experience in software engineering
• 2-3+ years operating in a Lead, Staff, or Senior+ capacity
• Proven experience building and scaling SaaS platforms
• Experience leading architectural decisions and system design initiatives
• Strong full-stack capability in modern JavaScript/TypeScript environments

Tech Stack

• Frontend: React (Vite), Tailwind
• Backend: Node.js, Express, tRPC
• Databases: PostgreSQL, Elasticsearch

Strong adjacent experience is also welcomed.

Nice to Have

• Experience in PropTech or data-heavy platforms
• Familiarity with UK property, planning, or geospatial datasets
• Experience helping scale engineering teams in high-growth environments

Why Apply?

• Hybrid working (2 days onsite in Central London)
• Competitive salary + EMI scheme
• 25 days holiday + bank holidays + birthday off + Christmas shutdown
• Health cash plan (including dental)
• £500 annual personal development budget
• MacBook + home office contribution
• Collaborative, ambitious team culture with regular socials and company trips

Interview Process

• Initial video-based screening
• Technical task (React + Tailwind + tRPC + PostgreSQL)
• Technical walkthrough & system design interview
• Final interview with senior leadership

If you’re an experienced engineer who thrives on combining technical depth with leadership impact, and you want to help scale a genuinely high-impact data platform, we’d love to share more.

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

AI-ComfyUI Workflow Developr - Luxury Brand Production Pipeline
Contract | London-based Studio | UK Remote

London creative agency building high-end CGI for luxury brands needs a contract ComfyUI Workflow Developer who can build AI-powered production pipelines, not just prototype demos.

The project:

Phased approach. 3-4-week POC sprint first, proving that automated AI asset generation can meet luxury brand quality standards. If the client signs off, you move into full production build and deployment.

As the AI/ComfyUI Workflow Developer, you’ll create ComfyUI workflows that generate high-resolution brand imagery at volume using AI models without sacrificing brand quality. Custom AI pipelines, API integration with their content systems, and quality validation that works for luxury market expectations. This has to work in production, not just look good in a deck.

POC sprint proves:

• AI workflow architecture that actually scales
• Quality output matching existing CGI standards
• Integration approach for brand DAM systems
• Production roadmap client can commit budget to

Production phase builds:

• Full AI pipeline deployment handling real campaign volumes
• Scale automation that doesn’t break
• Handover documentation for their in-house technical team

What this AI/ComfyUI Workflow Developer role needs:

• Demonstrable ComfyUI workflow development capability
• Python automation and API integration skills
• Real experience with AI generation models (MidJourney, Stable Diffusion, Seedance, Flux, or similar)
• Production deployment knowledge and error handling
• Ability to explain technical constraints to creative teams clearly

Bonus points:

• Previous luxury brand, product visualisation, or CGI workflow experience
• Agency-side work where you’ve dealt with changing briefs

The agency is well-versed in CGI production, working with high-end brands and delivering projects within strict brand guidelines.

If you’re an experienced AI/ComfyUIworkflow Developer, apply with your current CV and portfolio that showcase workflow examples and projects.

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

Solution Architect, Azure, AWS, Cloud Tech, Senior Developer, .NET, C#, GenAI, AI, Microsoft Stack, Professional Services, London

Solution Architect required to work for a large and exciting firm based in Central London. This will mainly be based from home and you would only have to visit the office circa twice a month.

We need this individual to join this exciting, forward thinking technology team to help design solutions around complex products and applications that sit on Microsoft Azure and AWS (mainly Azure). A Microsoft Technology Stack background is essential, and you must be from a Software Engineering or Application Engineering background. This is NOT an Infrastructure based Solution Architect and is focused more around Development (.NET / C# etc).

If you have an Enterprise Architect background and want to apply for this, there would be huge questions as to why you would want this kind of role in the first place. We need someone who:

• Is excellent with Stakeholders and is a proven communicator with good negotiation skills
• Can come up with the most weird and whacky Proof of Concepts (POCs) and be able to present these to the business, explaining the benefits etc
• Is happy to be centred around ‘Product’ and can be creative with this around the business and the business needs
• Is proven with working alongside Developers, proving clear and concise instructions for each journey ahead
• Is happy with lots of prototyping and playing a major part in building the products
• Has recent experience working with Developers who use GenAI to get from A to B more efficiently
• Has some experience with AI related products

We can consider Senior Developers for this role but you must have some experience within Solution Architecture. Also, experience of dealing with 3rd party vendors is be a must. In addition to this, you will have come from environments that have complex integration layers when it comes to products and applications. It is a heavily regulated environment and you have to be mindful of this.

In summary, we need a hands-on, product-focused Solution Architect who builds prototypes, works closely with dev teams, operates in public cloud, understands modern engineering, and can influence stakeholders while helping shape early-stage products in a Microsoft-heavy environment.

We can consider people who have worked for large, complex businesses, along with candidates who have worked within consultancy practices in the past.

This is an excellent opportunity and salary is dependent upon experience. Apply now for more details.

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.

Permanent | Hybrid Working | South East England We are partnering with a leading customer-focused organisation operating in a complex, regulated environment to recruit a Technical Architect for a critical retail technology domain. This role provides domain-level technical leadership across a key part of the customer and commercial ecosystem. You will define, shape and govern the architecture supporting retail operations delivered in an operational, distributed environment. This is a high-impact opportunity to drive architectural direction across point-of-sale systems, retail platforms, catalogue and pricing services, payment integrations, supply chain connectivity, and post-transaction reconciliation processes. You will work closely with delivery teams, third-party suppliers and business stakeholders to simplify complexity and enable sustainable technical change. Key Responsibilities - Own and evolve the target-state architecture for the retail technology domain - Define and govern architectural standards, patterns and principles - Shape the transition of legacy systems toward modular, event-driven, cloud-aligned designs - Develop and maintain domain roadmaps aligned with enterprise strategy - Manage technical risk and technical debt registers - Ensure alignment with security, performance, resilience and operational readiness standards - Lead architecture reviews and support governance processes - Translate business requirements into clear, pragmatic technical designs - Guide delivery teams and suppliers to ensure architectural intent is realised - Produce high-quality architectural artefacts using standard modelling approaches (e.g. UML, BPMN, C4, ArchiMate) - Design robust, scalable and operable integration patterns - Support systems operating in intermittently connected or distributed environments (including edge/mobile devices) - Oversee data flows across retail, operational and financial systems - Ensure solutions operate safely and reliably within a live operational environment - Mentor engineers and promote best practice in architecture - Support proof-of-concept initiatives for new retail capabilities and digital tooling - Improve documentation standards, reusable patterns and architectural processes Experience & Skills Required - Proven experience as a Technical Architect or Senior Engineer - Background in retail, ecommerce, payments, logistics or transport-related environments - Strong knowledge of integration patterns, event-driven architecture, cloud platforms, and domain-driven design - Experience modernising and evolving legacy platforms - Understanding of distributed systems and offline-capable solutions - Familiarity with financial processing and reconciliation workflows - Strong stakeholder engagement and communication skills - Experience working with mobile or edge devices

Are you ready to take your career to the next level with a role that blends innovation, creativity, and cutting-edge technology? A fantastic opportunity has arisen for a Web Developer to join a forward-thinking company specialising in immersive technology. This company is at the forefront of transforming virtual reality and 360 content into collaborative, room-scale experiences. Based in the vibrant area of Hoxton, London, this is your chance to be part of an inspiring team pushing the boundaries of shared immersive environments.

What You Will Do:

• Develop and enhance user-facing interfaces for the company’s immersive platform, ensuring they are intuitive and accessible.

• Work on cloud-hosted applications and contribute to seamless integrations with real-time immersive engines.

• Collaborate with a multidisciplinary team to create innovative solutions that blend physical and digital experiences.

• Optimise web applications for performance, scalability, and security.

• Contribute to the evolution of front-end and back-end systems using modern web technologies such as React, Node.js, and TypeScript.

What You Will Bring:

• Strong proficiency in HTML, CSS, and JavaScript, with a solid grasp of best practices.

• Proven experience with Node.js and modern frameworks like React and TypeScript.

• Familiarity with WebGL and libraries such as three.js or react-three-fiber.

• A solid understanding of back-end development concepts, including APIs and authentication.

• A strong eye for UI/UX design, with experience in wireframing and prototyping being a bonus.

This role is pivotal in advancing the company’s mission to make immersive technology accessible to everyone. The company is renowned for its innovative solutions that bring teams together in collaborative, shared environments. You’ll be working on technology that empowers global brands, educators, and creative studios to engage with digital content in ways never thought possible.

Location:

This role is based in Hoxton, London, offering a hybrid working arrangement to suit your lifestyle.

Interested?:

If you’re excited by the prospect of building web technology that powers immersive environments, don’t wait! Apply today and take the first step towards an extraordinary career in this dynamic and innovative field.

Your CV will be forwarded to Jonathan Lee Recruitment, a leading engineering and manufacturing recruitment consultancy established in 1978. The services advertised by Jonathan Lee Recruitment are those of an Employment Agency.
In order for your CV to be processed effectively, please ensure your name, email address, phone number and location (post code OR town OR county, as a minimum) are included.

Permanent | Hybrid Working | South East England We are partnering with a leading organisation operating in a complex, real-time operational environment to recruit a Technical Lead within its Integrated Operations and Planning technology domain. This role sits at the heart of mission-critical systems that power operational planning and real-time control functions. The product suite underpins essential processes such as workforce planning, scheduling, disruption management and integrated control operations. You will shape the technical direction of these platforms, ensuring solutions are scalable, resilient and future-ready. Working closely with Product and Delivery leadership, you will balance business priorities with sound engineering decisions to deliver measurable operational value. Role Purpose - Provide technical leadership for a product team, ensuring solutions are scalable, secure and fit for purpose - Act as the technical authority across product, delivery and engineering collaboration - Guide and mentor engineers, promoting sustainable engineering practices across the full product lifecycle - Balance short-term delivery objectives with long-term maintainability, resilience and cost-effectiveness Key Responsibilities - Provide hands-on leadership, setting coding standards and reviewing designs to ensure best practice in security, performance and integration - Define and own technical architecture across operational planning and control products - Partner with Product Managers to translate business requirements into technical designs, effort estimates and roadmaps - Work with Delivery Leads to align technical feasibility with delivery timelines, identifying risks and dependencies early - Champion modern engineering practices including CI/CD, cloud-native design, API-first development and automated testing - Collaborate with enterprise architecture and governance forums to ensure alignment with broader technology strategy and standards - Act as a trusted advisor to operational stakeholders, clearly articulating technical trade-offs and outcomes - Mentor and develop engineers, fostering a high-performing, continuously improving team culture - Lead root cause analysis and resolution of critical production issues impacting live operations Experience & Skills Required - Proven experience as a Technical Lead or Principal Engineer within large-scale, mission-critical systems - Strong software engineering background with expertise in at least one major development stack (e.g. Java, .NET, Python or optimisation tooling) - Experience designing and delivering cloud-native solutions (AWS preferred), with strong knowledge of APIs, event-driven architecture and microservices - Familiarity with operational planning, scheduling or real-time control systems within transport or similarly complex environments (desirable) - Strong understanding of DevOps practices including CI/CD pipelines, automated testing and observability - Experience working within Agile delivery environments and shaping effective team ways of working - Strong analytical and problem-solving skills, with the ability to balance time, cost and technical debt considerations - Ability to influence stakeholders at all levels, translating technical concepts into clear business value - Demonstrated experience mentoring engineers and building high-performing teams - Degree in Computer Science, Software Engineering or equivalent practical experience