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Overview
Looking for top Backend Engineer jobs? Discover the latest backend developer opportunities on Haystack, your go-to IT job board. Whether you specialize in Java, Python, Node.js, or Ruby, find the perfect backend engineering role to advance your tech career today. Start browsing backend developer jobs now!
Senior Software Developer
Yolk Recruitment Limited
Cardiff
Hybrid
Senior
£65,000
RECENTLY POSTED
+6

?? Senior Software Developer (Java) ?? Cardiff ?? Up to £65,000 DOE What You'll Do: You'll join a collaborative, cross-functional team where you'll play a key role in building and enhancing robust software solutions used by organisations around the world. Day to day, you'll be hands-on with designing, developing and maintaining scalable applications, while contributing to technical decisions and continuously improving how the team works. You'll work closely with Product Owners, QA and DevOps colleagues to translate requirements into high-quality solutions, support production releases, and help resolve complex technical issues. There's also a strong opportunity to mentor others and progress towards a lead developer position, shaping both the technology and the team's future direction. What You'll Bring: Strong commercial experience with Java 8+ and modern development practices Solid knowledge of frameworks such as Spring Boot, Spring Cloud and Hibernate Experience building microservices and RESTful APIs A good understanding of modern software architectures including microservices and event-driven design Hands-on experience with AWS , Docker and cloud-native development Confidence writing and maintaining unit tests using tools such as JUnit and Mockito Experience working with relational databases such as SQL or MySQL Familiarity with Git-based version control and Agile delivery environments Strong problem-solving skills, clear communication and a genuine desire to keep learning Why You Should Apply: This is a chance to work on meaningful software that supports workplaces globally. You'll benefit from a hybrid working model, strong support for personal development, and a culture that values collaboration, learning and inclusion. Alongside an attractive benefits package including enhanced parental leave, generous annual leave, healthcare support and a pension scheme, you'll have access to learning platforms and clear opportunities to grow your career in a supportive, forward-thinking environment. Ready to Apply? Contact Jack Winder to find out more. Please apply with a CV and a cover letter outlining why you're perfect for the role. Know someone great for the job? We offer a referral scheme-just get in touch! Note: We do our best to respond to every application, but due to volume, we can't always guarantee it. If you haven't heard back within 7 days, unfortunately, you haven't been successful this time. Keep an eye on our site for new opportunities! TPBN1\_UKTJ

Java Tech Lead
Velocity Talent Ltd
Burgess Hill
Hybrid
Senior
£300/day
RECENTLY POSTED

Java Tech Lead / Architect with 10+ years experience is needed for an initial 6-month contract with further extensions up to 18 months paying £300 a day inside IR35 to drive the design and execution of high-scale, event-driven systems. This role is a hybrid of strategic architectural planning and hands-on engineering leadership. You will be responsible for defining technical roadmaps, mentoring a high-performing engineering team, and ensuring the delivery of robust microservices within a complex, long-term program.

Key Responsibilities

  • Architectural Leadership: Design and oversee the implementation of scalable microservices and event-based architectures using Java, Spring Boot, and Kafka.
  • Team Steering: Act as the technical point of contact for the team; facilitate decision-making, sprint planning, and resource allocation.
  • Quality Governance: Conduct rigorous code reviews, approve pull requests, and establish best practices for CI/CD and automated testing.
  • Hands-on Delivery: Lead by example by contributing to mission-critical code and solving complex technical bottlenecks that require “Architect-level” troubleshooting.
  • Stakeholder Management: Translate business requirements into technical blueprints and communicate progress/risks to program leadership.

Technical Requirements

10+ years of professional software development experience

Expert-level proficiency in Java (current versions) and Spring Boot.

Deep expertise in Kafka for event-driven architecture and streaming.

Proven track record in Microservices design patterns, API Gateway management, and Cloud-native development.

Previous experience leading engineering teams through the full SDLC in an Agile environment.

Preferred Attributes

Experience with Cloud platforms (AWS/Azure/GCP) and containerization (Docker/Kubernetes).

Strong understanding of Database design (SQL and NoSQL).

Excellent communication skills, capable of bridging the gap between technical teams and non-technical stakeholders.

Working Conditions

Hybrid Model: Candidates must be able to commute to West Sussex 3 days per week.

Stability: While the initial contract is 6 months, this is a multi-year program offering significant long-term potential.

Software Developer
Sanderson Recruitment
Bristol
Hybrid
Junior - Mid
£55,000
RECENTLY POSTED

Sanderson are working with an established EdTech organisation that is transforming how training providers deliver and manage learning programmes.

With continued investment in its platform and product innovation, the organisation is looking to grow its engineering capability. This is an opportunity to join a collaborative, forward-thinking team where ideas are welcomed, modern engineering practices are valued, and technology decisions are shaped from the ground up.

As a Software Developer, you’ll contribute to the design, development, and enhancement of core platform features. You’ll work across the full development lifecycle, building secure, scalable, and high-performing solutions that deliver real impact for users.

Responsibilities:

Design, build, and maintain high-quality, maintainable code across backend and frontend systems

Develop and enhance features within the platform, ensuring performance, scalability, and usability

Contribute to solution design discussions, translating business and user requirements into robust technical outcomes

Apply modern engineering standards, including clean code principles, testing, security, and documentation

Collaborate with Product Owners, Developers, and stakeholders to deliver high-quality releases

Support continuous improvement by identifying opportunities to enhance systems, tooling, and development practices

Share knowledge within the team, contributing to a supportive and growth-focused engineering culture

Skills & Experience:

Strong experience with .NET for backend development

Frontend development experience with Angular or React

Experience working with cloud platforms (Azure preferred, AWS also considered)

A proactive, collaborative mindset with a focus on quality and continuous improvement

This is a full-time, permanent role offering a salary up to £55,000 (DOE) and a hybrid working model.

Please Note: You must be a UK resident to apply for this role.

Apply now or email for more details.

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.

TPBN1_UKTJ

Senior Software Engineer C++/ Rust
Platform Recruitment Limited
Cambridge
In office
Senior
£100,000
RECENTLY POSTED

Senior Software Engineer - Up to £200,000 - Cambridge Title : Senior Software Engineer Company : Proprietary HFT Location : Cambridge Pay : Up to £200,000 with huge potential to increase Company : A proprietary high-frequency trading firm in Cambridge, specialising in the research and development of ultra-low-latency automated trading strategies, are looking for a Software Engineer with a demonstrable background of delivering complex projects from a concept through to delivery. It is important that you have been involved in the entire software development life cycle (SDLC), as this dynamic role will require you to rapidly prototype - and ultimately move into production - highly complex, reliable and performant systems - oftentimes from scratch. Role : Develop ultra-low-latency trading systems C++ or Rust code Work closely with a close-knit team of Software Developers and Quant Traders Build mission-critical research systems from scratch This is an early-stage hire for the team. Much of your work will be completely greenfield. You will be involved in the designing, prototyping, testing and productionising new software. Providing support to a small number of junior engineers Whilst not a requirement, you will be given the opportunity to grow into a senior managerial role should you wish About you: Holistic approach to problem solving; you are able to see the 'bigger picture' of your work Exceptional systems knowledge Exceptional Linux knowledge Strong networking knowledge (TCP/IP) Strong concurrent programming ability (C++ or Rust) Experienced working with distributed systems Full details are available. Please don't hesitate to get in touch. TPBN1\_UKTJ

Software Developer
Oscar Associates (UK) Limited
Lincoln
Hybrid
Mid
£55,000
RECENTLY POSTED

Software Developer - C# .NET Core/Vue/AWS - Lincoln - £50,000 - £55,000

The Role

An innovative and growing technology company in the leisure sector is looking to add a talented Software Developer to its UK-based team.

You’ll be contributing to a modern software platform that’s making a big impact across a niche global market. There will be the opportunity to collaborate with other developers and people across the wider technical team working on a variety of existing and greenfield projects.

You’ll join a friendly, cross-functional team where your input will shape key product decisions and help improve the user experience for thousands of active users. The work is varied, ranging across the full stack on a variety of systems.

Requirements

Minimum 4 years of experience in Software Development

C# .NET Core

SQL Server

JavaScript/TypeScript/HTML + CSS

JavaScript frameworks (Vue ideally but will consider React/Angular/KnockoutJS)

Desirables

AWS (EC2, SNS and Cloud Formation)

DevOps and build automation tools

Agile/Scrum Methodologies

The Company

This is a expanding tech company operating in a niche sector with a stable, global customer base. With team members across multiple countries, they offer the feel of a close-knit startup with the backing and stability of a mature business. They are currently expanding into other global markets, demonstrating their positive growth!

They foster a culture where developers are encouraged to take ownership, be creative, and work collaboratively. You’ll benefit from strong leadership, technical freedom, and the chance to work on products used internationally.

Salary for this role is between £50,000 and £55,000 DOE and further benefits include hybrid working (2 days in the office, 3 days WFH a week), your birthday off, free onsite parking, the opportunity to progress in an exciting sector and much more!

Apply Now

If you’re looking for a role that offers flexibility, challenge, and the chance to build meaningful software in a collaborative setting, this will be the role for you!

Don’t miss out and apply today!

Software Developer - C# .NET Core/Vue/AWS - Lincoln - £50,000 - £55,000

Oscar Associates (UK) Limited is acting as an Employment Agency in relation to this vacancy.

To understand more about what we do with your data please review our privacy policy in the privacy section of the Oscar website.

TPBN1_UKTJ

Senior Software Engineer - Remote
Transvault Software
Clevedon
Fully remote
Senior
£75,000
RECENTLY POSTED
+3

You enjoy solving interesting and challenging problems. You care about great design , real users, and shipping software that works. You dont want layers of management between you and the code. If that sounds like you, keep reading. Were a market leader in enterprise email migration trusted globally to move some of the worlds most complex messaging environments safely and reliably. Alongside that, were building a new generation of products, including tools that monitor and manage GenAI usage in enterprise environments. Were looking for a Senior Software Engineer who wants real technical ownership, real influence, and real problems to solve. What Youll Do Youll work end-to-end on meaningful systems from design through production alongside a small, highly capable engineering team. Design, build, and evolve production systems used by enterprise customers worldwide Take ownership of key components and services, improving scalability, reliability, and security Break down complex requirements into elegant, pragmatic solutions Improve and modernise existing systems where it genuinely adds value Raise the bar through collaborative code reviews and architectural discussions Troubleshoot and resolve real-world issues including performance, reliability, production incidents Use modern tooling (including AI-assisted development where appropriate ) without sacrificing quality Maintain a positive, can-do attitude that energi s es the team and drives momentum This is a senior, hands-on role . Working with other s mart engineers building great software. The Tech Youll Work With You dont need to tick every box , but you should be strong in most of these and excited to learn the rest: TypeScript / Node.js for APIs and services React + TypeScript with modern tooling SQL / relational databases with real production experience C# / .NET (including working with legacy or Windows-centric components when needed) Secure system design (auth, tokens, certificates, APIs, networking fundamentals) Automated testing, CI/CD, and production-grade engineering Nice-to-haves include C loud, containers, Python, AI integrations, and experience with enterprise systems . How Youll Work L ow bureaucracy, high trust A culture that values engineering judgment , not just output Space to influence technical direction and reduce long-term pain Why This Role Is Different Youll have real influence over systems used by major organisations globally Youll work on software where correctness, reliability, and security genuinely matter Youll be trusted to make decisions , and expected to think creatively Youll help shape how we responsibly use AI in real enterprise software What We Offer Competitive salary and benefits Flexible, remote working with onsite team collaboration in the Bristol area every other month A smart, supportive team that values quality The chance to build systems youll be proud to put your name on If youre a senior engineer who can visualise an outcome and has the curiosity and problem-solving skills to deliver it, wed love to talk. TPBN1\_UKTJ

Spotlight
Technical Architect
easyJet
Luton
Hybrid
Senior - Leader
Private salary
RECENTLY POSTED

The Technical Architect for InFlight Retail provides domain level technical leadership for a critical part of easyJet’s customer and commercial ecosystem. This role defines, shapes and governs the architecture for all systems involved in onboard retail — including level technical leadership for a critical part of easyJet’s customer and commercial ecosystem.

You’ll have a real opportunity to define, shape and govern the architecture for all systems involved in onboard retail — including point of sale devices, retail platforms, catalogue and pricing systems, payments, supply chain integration, and post flight reconciliation. The role partners with delivery teams, suppliers and business stakeholders to simplify complexity and drive technical change across the domain.

This is a permanent opportunity, based in Luton! (Hybrid Working)

What you’ll be doing

  • Own the target-state architecture for the inflight retail domain
  • Define standards, patterns and principles across the platform
  • Shape the evolution of legacy systems toward modular, event-driven, cloud-friendly designs
  • Develop and maintain domain roadmaps aligned with enterprise strategy
  • Manage the technical risk register and technical debt register
  • Ensure consistency with security, performance, reliability and operational readiness requirements
  • Lead architecture reviews and support Technical Design Authority submissions
  • Translate business needs into clear, pragmatic technical designs
  • Guide delivery teams and suppliers to ensure architectural intent is realised
  • Produce high-quality architecture artefacts using consistent notation (Unified Modelling Language, Business Process Model and Notation,
  • Context–Container–Component models, ArchiMate)
  • Ensure integration designs are robust, scalable and easy to operate
  • Understand inventory flows, payments, offline-first design and retail reconciliation processes
  • Shape data flows between inflight systems, retail platforms, ground systems, flight systems, retail platforms, ground systems and financial processes
  • Ensure solutions work safely and reliably in an operational airline environment
  • Mentor engineers and promote good architectural practice
  • Support proof of concepts for new retail experiences, data insights, concepts for new retail experiences, data insights and crew tooling
  • Improve documentation quality, pattern libraries and architecture processes

Requirements of the Role

What you’ll bring to the team:

  • Demonstrable experience as a Technical Architect or Senior Engineer
  • Background in retail, ecommerce, payments, logistics-commerce, payments, logistics or transport
  • Strong understanding of; integration patterns, event-driven architecture, cloud platforms, data flows & domain driven thinking
  • Comfortable working with legacy systems and shaping their evolution
  • Excellent communication and stakeholder influence
  • Knowledge of mobile/edge devices
  • Familiarity with downstream financial processing and reconciliation
Application Developer
ARC IT Recruitment
Brighton
Hybrid
Junior - Mid
£60,000
RECENTLY POSTED

Brighton - Hybrid (4 days in office, 1 day remote)

Permanent | Up to £60K DOE

Join one of the South East’s fastest-growing technology companies, celebrated for its innovative and collaborative culture. Our client delivers cutting-edge software solutions - and they’re looking for an Application Developer to help drive their next stage of growth.

This is an excellent opportunity to work within a forward-thinking team where creativity, collaboration, and continuous improvement are at the heart of everything they do.

As an Application Developer, you’ll play a key role in designing, building, and maintaining high-quality software applications. You’ll collaborate closely with other developers, testers, and stakeholders to deliver robust, scalable, and efficient solutions using the latest Microsoft technologies.

Required:

  • Develop and maintain applications using C# and .NET Core.
  • Apply SOLID principles and clean coding practices to produce maintainable, high-quality software.
  • Contribute to the full software development life cycle, from design and development to testing and deployment.
  • Work collaboratively within an agile, team-oriented environment.
  • Participate in code reviews and share knowledge to foster team growth.

Skills & Experience

  • 2-3 years of commercial experience in C#/.NET Core development.
  • Strong understanding of object-oriented programming and SOLID design principles.
  • Experience building and integrating Back End applications.
  • A strong communicator and proactive team player with a passion for technology.

The Offer

  • Competitive salary up to £60,000, depending on experience.
  • Hybrid working model - 4 days in the Brighton office, 1 day remote.
  • Opportunity to work in a dynamic, growth-oriented company with a supportive team culture.

If you’re a motivated Application Developer who thrives in a collaborative environment and loves solving complex challenges, we’d love to hear from you.

Software Engineer
Euro Projects Recruitment
Fareham
In office
Junior - Mid
£40,000
RECENTLY POSTED

Software Engineer, Southampton, £35,000 £40,000

  • Software Engineer / Computer scientist / Software Development opportunity within a fast-growing medical device company, developing game-changing rapid diagnostic technology for hospital laboratories.
  • Salary guide £35,000 £40,000 depending on experience (some flexibility)
  • Flexible working hours, 27 days holiday (increasing by 1 day per year), well-funded MedTech start-up environment.

You will be part of a small, highly skilled team bringing a revolutionary technology to market following recent UKCA approval, with UK rollout underway and international expansion planned.

This Software Engineer job will suit:

  • A Software Engineer or Computer Scientist with some experience developing software in a regulated environment (medical devices, aerospace, automotive or similar).
  • Software Engineers familiar with developing software to industry standards as well as structured, test-driven processes.
  • Candidates with strong mathematical and statistical skills, who can apply this to to algorithm development.
  • Those with a degree in a relevant discipline (2.1 minimum).
  • Experience in C/C++, Python, MATLAB or similar languages.
  • Self-motivated engineers comfortable working with minimal supervision in a fast-paced start-up environment.

This Software Engineer job will involve:

  • Development of software for current and future diagnostic instruments, including middleware, firmware and algorithm development.
  • Writing well-documented, maintainable, and test-driven code in line with medical device & industry specific standards (e.g. IEC 62304, ISO 13485, ISO 14971).
  • Development and execution of unit, sub-system and system-level test plans.
  • Supporting software integration with hardware and electromechanical systems.
  • Working closely with internal teams including production, service and commercial teams, as well as external suppliers.

This Software Engineer jobis based in Southampton and is commutable from Fareham, Portsmouth, Eastleigh, Hedge End, Winchester and surrounding areas.

To apply please send your CV to Sam Hilton at Euro Projects Recruitment Ltd.
Please note that if you are not contacted within ten days, your application has not been successful.

Software Engineer (Mobile app)
Motability Operations
Edinburgh
Hybrid
Mid - Senior
Private salary
RECENTLY POSTED
+1

Description

The Software Engineering team is looking for an experienced mobile application software engineer to join the product team that works closely with the business in delivering and maintaining software for our external customers.

It is an agile delivery environment with momentum from some recent big successes, with lots of exciting new projects also in the pipeline.

Key aspects of working in an agile team at MO

  • Focus on delivering working software
  • Blending user (customer) feedback and best practice to evolve what we deliver
  • Continuously inspect and adapt how we deliver software
  • Utilise great testing principles, TDD & automation
  • A “build to run mindset”, ensuring the software / systems we build are easy to support and operate
  • Attitude of improving life for other engineers so the next person will find things a little bit easier
  • The team is greater than the sum of its parts
  • Embrace AI to maximise your effectiveness

Qualifications

You will considerable commercial mobile/web app development experience with one or more technologies listed below (or a relevant equivalent). We are very much looking for applicants who have an aptitude and demonstrable passion for building great software, a willingness to learn and embrace new things and want to be a part of a supportive and empathetic cross-functional delivery team.

If you have experience in any of the following areas, please get in touch

  • React Native/React for mobile & web application development
  • TypeScript for frontend or backend application development
  • Java for core backend applications
  • Design systems and component libraries
  • Accessibility-first development through implementation and testing
  • Cloud platforms e.g. AWS, Lambda, ECS, AppSync
  • Database technologies e.g. PostgreSQL
  • Messaging technologies e.g. Kafka
  • Continuous Integration and Continuous Deployment

Who you’ll be working with
Working in an agile product team typically aligned to a domain boundary. This role will require you to work collaboratively with Engineers, Software Engineers in Test, BA, Product Owner and Scrum Master.

Benefits

Motability Operations is a unique organisation, virtually one of a kind. We combine a strong sense of purpose with a real commercial edge to ensure we provide the best possible worry-free mobility solutions to over 860,000 customers and their families across the UK. Customers exchange their higher rate mobility allowance to lease a range of affordable vehicles (cars, wheelchair accessible vehicles, scooters, and powered wheelchairs) with insurance, maintenance and breakdown assistance included. We are the largest car fleet operator in the UK (purchasing around 10% of all the new cars sold in the UK) and work with a network of around 5,000 car dealers and all the major manufacturers. We pride ourselves on delivering outstanding customer service, achieving an independently verified customer satisfaction rating of 9.8 out of 10.

Our values are at the heart of everything we do. They represent ambition, and we look for our people to live and breathe them every day:

  • We find solutions
  • We drive change
  • We care

We operate hybrid working across the organisation where we split our time between working on-site at our offices, and at home, remotely within the UK. We believe hybrid working achieves a good work/life balance for our colleagues, allowing us to connect with each other, collaborate on important work, and perform together to deliver for our customers. It allows us to have the flexibility to work remotely up to 2-days per week whilst also using the great office spaces we have available.

As a Motability Operations team member, the benefits you can expect are:

  • Competitive reward package including an annual discretionary bonus
  • 15% non-contributory pension (9% non-contributory pension during probation period)
  • 28 days annual leave with option to purchase and sell days
  • Free fresh fruit and snacks in the office
  • 1 day for volunteering
  • Funded Private Medical Insurance cover
  • Electric/Hybrid Car Salary Sacrifice Scheme and Cycle to Work Scheme
  • Life assurance at 4 times your basic salary to give you a peace of mind that your loved ones will receive some financial help
  • Funded health screening for over 50s
  • Voluntary benefits: charitable giving, critical illness insurance, dental insurance, health and cancer screenings for you and your partner, discounted gym memberships and season ticket loans
  • Employee Discount Scheme with an app to save on the go
  • Free access to healthcare apps such as Peppy, Unmind, Aviva Digital GP and volunteering app on Hand for all employees
  • Generous family leave policies

At Motability Operations, we believe in building a diverse workforce, where our people are empowered to attend work as their true selves, and we encourage people from all backgrounds to apply. We want to sustain a culture that nurtures, where employees are free to flourish and where they’re rewarded equally, regardless of race, nationality or ethnic origin, sexual orientation, age, disability, or gender.

We pride ourselves on being an inclusive employer and as such, all our offices provide first rate disability access. With our hybrid working environment, we do our best to accommodate part-time and flexible working requests where possible, building on our culture of trust, empowerment, and flexibility.

Senior Software Developer
Yolk Recruitment Limited
Cardiff
Hybrid
Senior
£65,000
RECENTLY POSTED

?? Senior Software Developer (Java)
?? Cardiff
?? Up to £65,000 DOE

What You’ll Do:

You’ll join a collaborative, cross-functional team where you’ll play a key role in building and enhancing robust software solutions used by organisations around the world. Day to day, you’ll be hands-on with designing, developing and maintaining scalable applications, while contributing to technical decisions and continuously improving how the team works.

You’ll work closely with Product Owners, QA and DevOps colleagues to translate requirements into high-quality solutions, support production releases, and help resolve complex technical issues. There’s also a strong opportunity to mentor others and progress towards a lead developer position, shaping both the technology and the team’s future direction.

What You’ll Bring:

  • Strong commercial experience with Java 8+ and modern development practices
  • Solid knowledge of frameworks such as Spring Boot, Spring Cloud and Hibernate
  • Experience building microservices and RESTful APIs
  • A good understanding of modern software architectures including microservices and event-driven design
  • Hands-on experience with AWS, Docker and cloud-native development
  • Confidence writing and maintaining unit tests using tools such as JUnit and Mockito
  • Experience working with relational databases such as SQL or MySQL
  • Familiarity with Git-based version control and Agile delivery environments
  • Strong problem-solving skills, clear communication and a genuine desire to keep learning

Why You Should Apply:

This is a chance to work on meaningful software that supports workplaces globally. You’ll benefit from a hybrid working model, strong support for personal development, and a culture that values collaboration, learning and inclusion.

Alongside an attractive benefits package including enhanced parental leave, generous annual leave, healthcare support and a pension scheme, you’ll have access to learning platforms and clear opportunities to grow your career in a supportive, forward-thinking environment.

Ready to Apply?

Contact Jack Winder to find out more.

Please apply with a CV and a cover letter outlining why you’re perfect for the role.
Know someone great for the job? We offer a referral scheme-just get in touch!
Note: We do our best to respond to every application, but due to volume, we can’t always guarantee it. If you haven’t heard back within 7 days, unfortunately, you haven’t been successful this time. Keep an eye on our site for new opportunities!

Machine Leaning Developer?with AI &Python
Randstad Digital
Sheffield
Hybrid
Mid - Senior
£350/day - £400/day
RECENTLY POSTED

Machine Learning Developer (Document AI & NLP)

Duration:6-month contract (FTC/Subcon) role

Hybrid 3 days onsite

Location:Sheffield

The Role

You will design and build Python-based ML and OCR components, taking ownership of the full lifecycle-from initial requirement gathering with stakeholders to deployment and production support.

Core Responsibilities

  • Model Development: Build and iterate on models for content extraction and classification.
  • End-to-End Delivery: Support the full software development lifecycle (SDLC), including testing, deployment, and API resilience.
  • Collaboration: Work closely with Product Managers and technical teams to translate business needs into scalable AI solutions.
  • Innovation: Continuously test and improve existing features using traditional ML and Generative AI.

Technical Requirements

Mandatory Skills:

  • Azure Machine Learning: Proven experience within the Azure ecosystem.
  • Document AI: Strong background in Intelligent Document Processing (IDP) using both traditional and Generative AI (specifically open-source models).
  • Python Expert: Deep proficiency in Python for production-level Machine Learning and NLP.

Frameworks & Tools:

  • ML/DL: TensorFlow, PyTorch, or Hugging Face.
  • Processing: OpenCV, Spacy, Regex, and OCR technologies.
  • DevOps/Security: Experience delivering secure, resilient code and managing APIs.

Nice to Have:

  • Knowledge of PostgreSQL for data management.
  • Experience with Azure Kubernetes Service (AKS), Azure CLI, and Azure DevOps.
  • Experience in high-cadence production environments.

Randstad Technologies is acting as an Employment Business in relation to this vacancy.

Software Developer
Spectrum IT Recruitment
City of London
In office
Senior
£70,000 - £80,000
+2

Senior Software Developers specialising in trading systems required for an excellent client based in London.
The successful Software Developer will join a extremely talented development team and you will be exposed to creating and maintaining our client’s own applications based around a C#/.NET/SQL Server/ASP.NET universe. Many projects are greenfield projects and allow you to make your own mark on the development process early on.You will be given the opportunity to work with the some of the latest technologies possible and will be expected to produce excellent code for our clients in house software applications and trading platform.
Our client offers a very collaborative working environment with all of the development team coming from excellent educational backgrounds from across Europe.
This is predominantly an office-based role. As well as very competitive salaries, our client offers a comprehensive benefits package.

Skills required:

  • C#
  • Worked with the latest version of the .NET platform
  • Database experience - SQL Server
  • WPF
  • Angular, TypeScript
  • Excellent communication skills both written and verbal
    Knowledge of working with trading platforms
  • Modelling experience
  • High level aptitude for technology
  • Education to at least a BSc level or higher in Computer Science or Mathematics from a Russell Group University or equivalent.

Desirable skills:

  • HTML5, CSS, JavaScript
  • Multi-threaded application development
  • Understanding of Windows technologies

If you feel you have the skills and experience required for this opportunity, please contact Oliver Wilson on (phone number removed) or email (url removed)

Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy.

SAP RPA Developer - Nottingham, UK
Infoplus Technologies UK Ltd
Nottingham
In office
Mid - Senior
Private salary

Role: SAP RPA DeveloperLocation: Nottingham, UKDuration: 6+ Months
Roles and responsibilities:1.Design, develop, and implement RPA solutions using SAP technologies.2.Collaborate with business analysts and stakeholders to identify automation opportunities.3.Maintain and support existing RPA solutions, ensuring optimal performance and reliability.4.Conduct testing and debugging of RPA applications to ensure quality and efficiency.5.Document processes, workflows, and technical specifications for RPA solutions.6.Stay updated with the latest RPA trends and technologies, particularly within the SAP ecosystem.
Supervisory / Managerial responsibilities1.Responsible to design and develop SAP RPA Solution and provide guidance to the team2.Regular review of design, build delivery and ensure the solution built is inline with the overall architecture
Core skills:1.Minimum 3+ years of experience in SAP RPA and SAP BTP development or related roles.2.Proficiency in SAP technologies and tools, including SAP Intelligent RPA.3.Strong programming skills in languages such as ABAP, Javascript, UI54.Experience with process mapping and analysis techniques5.Knowledge of SAP BTP Development and Design Concepts (e.g., SAP S/4HANA, SAP Fiori).6.Familiarity with automation frameworks and tools.7.Strong analytical and problem-solving skills.8.Knowledge of SAP AI Capabilities on BTP is desirable

PLM Developer
DXC
UK
Remote or hybrid
Mid - Senior
Private salary
+6

\*\*Due to the customer requirements successful applicants must be eligible for high level UK Security clearance. \*Must be sole UK national\ We are seeking an experienced Siemens Teamcenter PLM Developer to design, develop, and implement customized solutions. The ideal candidate will have hands-on experience in Teamcenter configuration, customization, and integration with enterprise systems and manufacturing & design systems.. You will collaborate closely with business users, business analysts, architects, and engineering teams to deliver scalable and high-performance PLM solutions. Key Accountabilities and Responsibilities: Develop, configure, and customize Teamcenter components including RAC, AWC, BMIDE, ITK, SOA, and Workflow. Design and implement data models, business objects, and classification structures within Teamcenter. Work on core Teamcenter modules such as PDM, Change Management, BOM Management, Document Management, and Workflow Design. Develop custom extensions and integrations using ITK (C/C++), SOA, Java, JavaScript, and XML. Customize and deploy Active Workspace Client (AWC) UI extensions, stylesheets, and configuration files. Create and modify BMIDE templates, business rules, properties, and data model extensions. Integrate Teamcenter with enterprise systems (e.g., SAP, NX, CATIA, SolidWorks) and other CAD tools. Troubleshoot, debug, and resolve technical issues in Teamcenter configurations and customizations. Manage Teamcenter deployments, environment setup, and upgrades in collaboration with infrastructure teams. Prepare technical documentation including design specs, configuration guides, and release notes. Participate in code reviews, design reviews, and testing to ensure solution quality and maintainability. Support production and post-deployment stabilization activities. Essential Skills/Qualifications/Attributes: Proficiency in Teamcenter ITK (C/C++), SOA, RAC (Java), and AWC (HTML5, CSS, JavaScript, Angular). Strong knowledge of BMIDE (Business Modeler IDE) for data model customization and configuration. Experience with Teamcenter workflows, handlers, and extensions. Hands-on experience with custom reports, ACLs, groups, and role-based access control. Working knowledge of TeamcenterCAD integrations (NX, CATIA, SolidWorks). Good understanding of Teamcenter architecture (4-tier, 2-tier, thin client). Familiarity with database concepts (Oracle, SQL Server) and PL/SQL scripting. Experience with Deployment Center (DCP), environment setup, and patch management. Knowledge of REST/SOAP web services, XML/XSLT, and integration frameworks. Experience with version control tools (Git, SVN) and build tools (Ant, Maven). Preferred Skills/Qualifications/Attributes: Bachelors degree in Computer Science, Information Technology, or related field. Experience with Teamcenter Unified Architecture (UA) and Active Workspace 5.x or higher. Exposure to DevOps pipelines and automation tools (e.g., Jenkins, Docker). Knowledge of Scripting languages (Python, Shell, or Batch) for automation. Understanding of Agile development methodologies. Siemens Teamcenter certification DXC as an Employer As an award-winning, industry-leading, Technology firm we offer some of the best experiences for our employees and clients. We offer very competitive salaries coupled with an exciting benefits package including private medical insurance, gym membership discounts, pension contribution schemes and much more! We believe in nurturing an environment of continuous growth and development, with free training from our expansive upskilling library available to all our employees at any time. We encourage applications from those who may require flexibility in their working life for whatever reason, and/or those who are returning to the workplace. Were committed to providing this flexibility on a long-term basis. DXC Technology is committed to the development of a fully inclusive and sustainable workforce. All applications for employment are assessed purely on merit, against the capabilities and competencies required for the role. DXC Technology does not discriminate on the basis of gender, ethnic origin, race, faith, or sexual orientation.

Senior GPU Engineer
Platform Recruitment Limited
London
Remote or hybrid
Senior
£100,000

Title: Senior Software Engineer (GPU Drivers)

Company: AI Acceleration

Location: London (very flexible WFH)

Pay: Up to £160,000 + bonus and benefits

Company:

An advanced HPC R&D firm, looking to expand their GPU Driver team. Most of the team are ex-Big-Tech, ex-FAANG or ex-Chip firms. They joined because they get more flexibility and have more challenging/interesting work to do as the team is significantly smaller, with highly technical leadership. If you want to work alongside some of the brightest, most enthusiastic people in the industry, this may be worth exploring.

Role:

Senior Software Engineer position. You will be a significant hire spearheading much of their 2025 development. Much of the team will be built around you, and significant hires have already been made. You will develop, optimise and maintain their GPU driver stack, focusing on the performance and efficiency of graphics and compute workloads on cutting-edge GPU architectures.

About you:

  • 2 years+ in GPU Driver Development
  • Strong C++ or C programming skills
  • Experience with OpenCL or Vulkan

Full details are available. Please don’t hesitate to get in touch.

SAP RPA Developer
Stackstudio Digital Ltd.
Nottingham
Hybrid
Senior - Leader
£600/day - £650/day

Role DetailsJob Title: SAP RPA Developer
Location: Boots UK, D90 Thane Road, Beeston, Nottingham
Special working conditions (travel, on call etc): Mandatory Work from Office 3 days per Week
Additional remarks (if any): Experience of managing a multi-cultural team working across different time zonesJob Purpose and primary objectivesThe position is based in Nottingham, with an opportunity to work with the SAP Technical team of the SAP Centre of Expertise where the latest SAP technologies and ways of working are being leveraged, reporting into the SAP Solutions lead. SAP RPA skills are required, predominantly to work as SAP RPA Developer on S/4 HANA Transformation program and Maintenance and Support.Key responsibilities (please specify if the position is an individual one or part of a team)

  1. Design, develop, and implement RPA solutions using SAP technologies.
  2. Collaborate with business analysts and stakeholders to identify automation opportunities.
  3. Maintain and support existing RPA solutions, ensuring optimal performance and reliability.
  4. Conduct testing and debugging of RPA applications to ensure quality and efficiency.
  5. Document processes, workflows, and technical specifications for RPA solutions.
  6. Stay updated with the latest RPA trends and technologies, particularly within the SAP ecosystem.

Supervisory / Managerial responsibilities (please specify if the position will have persons reporting to it)

  1. Responsible to design and develop SAP RPA Solution and provide guidance to the team
  2. Regular review of design, build delivery and ensure the solution built is inline with the overall architecture

Other responsibilities Budgets, targets, equipment etc (please specify)Not applicableKey Skills/KnowledgeCore skills:

  1. Minimum 3+ years of experience in SAP RPA and SAP BTP development or related roles.
  2. Proficiency in SAP technologies and tools, including SAP Intelligent RPA.
  3. Strong programming skills in languages such as ABAP, Javascript, UI5
  4. Experience with process mapping and analysis techniques
  5. Knowledge of SAP BTP Development and Design Concepts (e.g., SAP S/4HANA, SAP Fiori).
  6. Familiarity with automation frameworks and tools.
  7. Strong analytical and problem-solving skills.
  8. Knowledge of SAP AI Capabilities on BTP is desirable

Experience requiredOverall 10-12 Years with min 3 years in RPAPerson SpecificationClient facing, Regular communication with the client & Team.I.e. Negotiating, client facing, communication, assertive, team leading/team member skills, supportive.

Java Software Engineer
Stealth IT Consulting Limited
Telford
Hybrid
Mid - Senior
£420/day

Java Software Engineer - Government Project

Active SC Clearance Required

Day Rate:£420 per day inside IR35
Duration:6 months
Location:Telford - 2 days on-site per month (mostly remote)

Job Description:

We are seeking an experienced software engineer to join a dynamic team that plays a crucial role in supporting key services. This role involves contributing to various project and live delivery tasks, ensuring that the systems are well-supported and efficiently managed.

Key Responsibilities:

  • Contribute to both project work and live service delivery.
  • Develop, implement, and maintain high-quality software solutions.
  • Collaborate with cross-functional teams to ensure successful and timely delivery of services.

Key Skills:

  • Proficiency in Java
  • Experience with Spring Boot
  • Knowledge of PL/SQL

Security Clearance:

  • Active SC clearance required

If this role aligns with your skills and experience, and you’re looking to contribute to meaningful public sector data programmes, we’d love to hear from you. Apply today to be considered.

Senior Software Development Engineer
Permax Recruitment Limited
London
Hybrid
Senior
£100,000
+4

Permax Recruitment is working in partnership with a London based firm who are on the lookout for a Software Engineer. For nearly a century, our client has been building a firm as accountants, auditors, tax specialists and close advisors to clients operating in emerging markets, disrupting the status quo. This has accelerated thanks to the blockchain. In 2017, a client asked to help with an ICO and they have been crypto pilled ever since, developing into what is currently the leading professional services firm on chain. In 2023, they opened a new leg of the business to carve out a team dedicated to all things Web3, which is now over 80 strong and servicing near 600 digital asset clients globally. They partner with some of the industry's most influential playerscryptocurrency exchanges, blockchain innovators, Web3 pioneers, and digital asset fundsoffering tailored audit, tax, and advisory services that keep pace with this fast-evolving landscape. Senior Software Engineer (Cloud Infrastructure & DevOps) Location: London (Three days in office, two days wfh) Salary: Approx £100,000 + Bonus While our team builds data pipelines and reporting tools that enable accountancy teams to work efficiently, this role focuses primarily on managing our AWS infrastructure, supporting the team with robust DevOps practices, and mentoring other developers. You'll be the technical expert who ensures our systems are scalable, secure, and well-architected as we transition to microservices and ephemeral infrastructure. Key Responsibilities Cloud Infrastructure & DevOps (Primary Focus) Own and manage our AWS infrastructure, acting as the team's cloud platform expert Be one of the leaders in the migration toward microservices and ephemeral architecture Lead in infrastructure as code Establish and maintain CI/CD pipelines for the team's data and application projects Lead the implementation of monitoring, logging, and alerting systems to ensure reliability in our solutions Manage cloud security, IAM policies, and compliance requirements Provide infrastructure support and guidance to team members working on data pipelines and applications Troubleshoot infrastructure and deployment issues Team Leadership & Mentorship Mentor other developers on DevOps practices, cloud architecture, and infrastructure concepts, jointly with other senior members Support and encourage team members in deploying and managing their data pipelines and applications Conduct code and infrastructure reviews Develop and share best practices for cloud-native development Foster a collaborative learning environment within the team Contribute to technical documentation Collaboration & Technical Enablement Enable the team to build and deploy data pipelines efficiently by providing templates and guidance on infrastructure Work with colleagues to understand their infrastructure needs and provide solutions Translate infrastructure requirements into scalable, maintainable solutions Communicate technical concepts clearly to both technical and non-technical stakeholders Collaborate with accountancy teams to ensure data platform reliability and performance *Technical* 5+ years of software engineering experience with a significant cloud infrastructure focus Understanding of networking, security, and cloud best practices Hands-on experience with AWS services Proficiency with infrastructure as code tools Experience designing and implementing CI/CD pipelines (GitHub Actions, GitLab CI, Jenkins, or similar) Solid understanding of containerization and orchestration (Docker, Kubernetes, ECS) Experience with monitoring and observability tools (CloudWatch, Datadog, Prometheus, or similar) Proficiency in bash Experience supporting development teams with infrastructure and deployment needs Knowledge of microservices architecture and serverless patterns *Leadership* Experience working in teams outside the realm of Software Engineering Demonstrated experience mentoring or managing junior Engineers Strong communication skills with both technical and non-technical audiences Ability to provide clear technical guidance and support Pragmatic approach to balancing technical delivery with business needs Desirable Python experience for infrastructure automation and tooling Familiarity with data pipeline infrastructure (supporting ETL workloads, data warehousing) Experience with data governance and compliance requirements Cloud cost and resource utilisation optimisation Experience migrating from monolithic to microservice architectures What We Offer Opportunity to shape and own the technical infrastructure Small, collaborative team environment where your expertise will have a direct impact Opportunity to create and develop solutions that are new, be impactful Dress for your diary. Flexible working hours. A technology enabled firm. A Family environment, fantastic retention, hiring due to exceptional growth and internal promotions. A Fixed profit-sharing bonus scheme payable to all staff. Brand new central London office. Plenty of socialising opportunities. Free breakfast and fresh fruit provided daily.

Salesforce Developer - Up to 660 Per Day
Anson McCade
London
In office
Mid - Senior
£660/day

Salesforce Developer - Up to 660 Per DayInside IR356 Month ContractActive SC Clearance

A leading technology organisation is seeking a Salesforce Developer to join their Public Sector-focused delivery team in London. Youll be building and extending Salesforce Industry Cloud solutions, working with Flows, OmniScript, Apex, and LWC, while collaborating with project leads and stakeholders.

Role Overview:

  • Develop and deploy Salesforce Public Sector Solutions, including Flows, OmniScript, FlexCards, and Action Plans
  • Implement custom Apex classes and Lightning Web Components where required
  • Follow best practices, maintain solution quality, and contribute to CI/CD pipelines
  • Collaborate in an Agile team, supporting and mentoring colleagues where needed

What Theyre Looking For:

  • 5+ years Salesforce Industry Cloud development experience
  • Experience with OmniStudio / Public Sector Solutions
  • Skills in Apex, LWC, JavaScript, and integration tools (Mulesoft / APIGEE beneficial)
  • Understanding of Salesforce security model, testing, and CI/CD deployment
  • Strong communication, problem-solving, and time-management skills
  • Active SC clearance or willingness to obtain

Please apply with your latest CV if you meet the requirements and are interested in this opportunity

Senior Software Engineer - Hybrid
Paxton Access
Brighton
Hybrid
Senior
Private salary

At the heart of Paxton, we are innovators, we look for ways of harnessing new technology to provide better solutions for our customers. We’re a global brand with nearly 40 years of experience, our team of over 400 employees is spread around the world.

We pride ourselves on creating a vibrant environment, with a focus on excellent company culture. Our teams make Paxton a great place to work with brilliant benefits that come with any role at Paxton, with an emphasis on career progression, training and development, and recognition of achievement for every employee.

So, what are the benefits?

  • We run a great social calendar with wine tasting, cooking classes, onsite yoga, staff parties, monthly internal events and more. Its rare you wont see something going on!
  • Hybrid working, work from home on Tuesday and Thursdays alongside our flexible working hours scheme.
  • Private medical insurance (Opt in) and healthcare cash-back plan with Health Shield.
  • Join a Carbon Neutral company Paxton is Carbon Neutral in the UK, France, Germany & South Africa!
  • Modern offices, collaboration spaces, onsite mini-gym, and a gourmet café with subsidised food.
  • Discounted fitness memberships up to 75% off in your area with GymFlex.
  • Collaborative internal group initiatives like the Green Team, EDI Team, or the Charity Team.
  • Tech, bike, and travel or season ticket loans.
  • 25-days holiday plus bank holidays, and you can buy & sell up to 5 days a year.
  • Recognised as one of the Best Companies to Work for in the UK, by Best Companies.

About the role

Join our Development team in Brighton where you’ll lead and support the software team in designing, implementing, and maintaining high-quality software solutions for Paxtons product portfolio, ensuring technical integrity across user interfaces, back-end API services, mobile apps, and cloud services.

  • Champion module design and feasibility plans, ensuring successful implementation across new and existing product ranges.
  • Collaborate with other teams to identify dependencies, mitigate risks, and recommend solutions.
  • Provide clear technical updates and articulate proposals to project and management teams.
  • Mentor and support team members, communicating technical changes and impacts.
  • Review requirements, specifications, and designs to assure product quality.
  • Enhance tools and workflows, recommending improvements.
  • Push technology boundaries to deliver innovative solutions.
  • Investigate and resolve software defects promptly.
  • Coordinate and deploy new builds for release candidates.
  • Ensure effective development testing, including Unit, Integration, Performance, Stress, and Automation Testing.
  • Contribute to decisions on overall software architecture.
  • Champion the code review process and ensure timely feedback resolution.
  • Build strong relationships with engineers, providing direction and support.

What are we looking for?

  • Proven experience in software development, including test-driven and behaviour-driven design methodologies.
  • Strong knowledge of C#, .NET, Web API, and advanced front-end and back-end technologies.
  • Comprehensive understanding of software design patterns and SOLID principles.
  • Experience working with Azure or equivalent cloud services.
  • Excellent team player with strong communication, mentoring, and leadership skills.

The right attitude is more important to us than your skills or experience. If youre excited about a role but your existing experience doesnt match up with every element of the job description, we encourage you to apply anyway.

We want to collaborate with you and hear your ideas, most of all, we want people to enjoy the journey with us.

Frequently asked questions
Haystack features a wide range of Backend Engineer positions, including roles in startups, mid-sized companies, and large enterprises, covering various industries such as finance, healthcare, e-commerce, and more.
Common programming languages for Backend Engineer roles on Haystack include Java, Python, Ruby, Go, Node.js, and C#. Job postings typically specify the preferred languages and frameworks.
Yes, Haystack allows you to filter Backend Engineer job listings based on remote, hybrid, or on-site work options to help you find roles that match your work location preferences.
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To apply for Backend Engineer jobs, simply create an account on Haystack, upload your resume, and submit applications directly through the platform. Some listings may also redirect you to the employer's application portal.