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Overview
Discover top contract Backend Engineer jobs on Haystack, the leading IT job board connecting skilled developers with exciting short-term opportunities. Whether you specialize in Java, Python, Node.js, or other backend technologies, find flexible contract roles that match your expertise and advance your career today. Start your search for the best Backend Engineer contract jobs now!
Senior Cloud Full Stack Developer
James Newbury
UK
Hybrid
Senior
£60,000 - £80,000
RECENTLY POSTED
+1

If you are a versatile and highly skilled Senior Cloud & Full Stack Engineer ready to work, support and advance this UK leading companies modern application ecosystem, then please, do read on!

This role requires strong expertise across cloud infrastructure, backend microservices, frontend development, and legacy system support. The ideal candidate will possess comprehensive skills in all these areas, ensuring a well-rounded and robust contribution to our technology landscape.

Duration: temporary contract for 3-6months or so

This is a paid per hour PAYE temporary role

Rate of Pay PH: £33-43ph plus holiday pay (circa £60-80,000 if salaried)

Location: hybrid. Need to work in the office in Central Bedfordshire for meetings, reviews and handovers, which will be once a week or so.

Hours: 35 hrs per week 9am-5pm (1 hr lunch) Days: Mon-Fri

Benefits:

  • free parking
  • electric vehicle charge points
  • holiday pay accrual
  • wfh most of the time
  • pension after a qualifying period

Key Responsibilities

* Design, build, and maintain AWS infrastructure-as-code deployments using Terraform and related tooling.

* Manage and optimize serverless microservices, including Lambda functions, API Gateway, and Amplify-hosted applications.

* Support and enhance Python-based Lambda microservices and Node.js backend components.

* Maintain and develop React-based front-end applications, including complex UI components and dynamic API integrations.

* Oversee database administration for MySQL/RDS

* Apply strong security best practices across infrastructure, applications, and data flows.

* Provide maintenance and incremental improvements to legacy .NET applications where required.

* Produce and maintain clear technical documentation for infrastructure, services, and processes.

* Collaborate effectively with cross functional teams through strong communication and teamwork.

Core Technical Skills (Primary Focus & Essentials/Nice to have)

* AWS (essential) IaC & Terraform

* Python (essential) for Lambda microservices

* Node.js backend development (essential)

* MySQL/RDS administration (essential)

* React, HTML, CSS, and AG Grid

* API Gateway & dynamic API integrations

* Documentation and communication excellence ( essential)

* AWS Amplify workflows

* Legacy .NET application support

Ideal Candidate Profile

* Comfortable working across cloud infrastructure, backend services, and front-end applications.

* Able to take ownership of systems end-to-end, from architecture to deployment.

* Strong documentation habits and the ability to communicate clearly with technical and non?technical stakeholders.

* A collaborative mindset with a focus on team alignment and shared problem?solving.

* Eager to learn new technologies and expand into unfamiliar areas.

* Excellent communication skills and a proactive approach.

* Proven relevant experience, 3 years or more.

* Eligibility to work in the UK on a full time basis (please, no student visas as it will not cover the duration of the hours/contract)

* Ideally, a driver as the location of the office is not close by any public transport links

This is to start asap. So if you are this amazing, talented Cloud & Full Stack Engineer, then please send your cv to James Newbury Appointments for immediate review. If you do not hear back within 3 working days, unfortunately, you will not have been shortlisted on this occasion, however ,we would like to thank you for your interest and wish you all of the very best in your search

Senior dotnet developer
Hunter Selection
Birmingham
Hybrid
Senior
£50,000 - £65,000
RECENTLY POSTED

Senior .Net Software Developer

Up to £65k

Birmingham

Hybrid role

C#, .Net, Azure

Benefits:

25 days annual leave plus bank

Purchase additional holiday days

Life Assurance

Income Protection

Dental, and more…

I am working with a client in the Birmingham area that is looking for Mid to Senior .Net developers to join their team.

They are looking for someone who is autonomous, proactive and accountable, able to understand ambiguity, take ownership of tasks and use best practice in development standards. You should be able to work independently when completing a task while being confident enough to ask for support when needed.

You should be someone that uses SOLID design principles in your work, and understands how to secure applications using IAM tools, integrating SSO and MFA into applications.

This is a regulated and governance heavy environment in a fintech environment.

There are two environments to choose from - one is greenfield focused, and one is more brownfield.

Tech Stack you will be working with:

C#, .Net 8, soon to be .Net 10, Azure, Azure App Services, Azure Service Bus, Azure Containers, Blob Storage, Azure Key Vault, Cosmos DB, Azure SQL, MSSQL Server, GitHub, CI/CD

Day to day responsibilities:

Hands on development - C#, .Net

Following best practice within team standards

Cross functional collaboration

Software Testing - Unit and Integration

Ensure that DevOps processes are implemented consistently

Working across entire SDLC

Continuous Improvement

Working across both monolith and microservices.

Documentation

Essential Skills:

C#, .Net

Azure - Azure App Services, Azure Service Bus, Azure Containers, Blob Storage, Azure Key Vault, Cosmos DB, Azure SQL

Building APIs from scratch

IAM - AD, Entra

MSSQL Server, CosmosDB

Stakeholder communication

Agile / Scrum experience

Desirable:

Azure Certifications

This is an urgent vacancy, so if you would like to be considered then please apply quoting reference AR(phone number removed).

C#, .Net 8, .Net, dotnet, Azure, Azure App Services, Azure Service Bus, Azure Containers, Blob Storage, Azure Key Vault, Cosmos DB, Azure SQL, MSSQL Server, GitHub, CI/CD, Entra ID, C#, .Net 8, .Net, dotnet, Azure, Azure App Services, Azure Service Bus, Azure Containers, Blob Storage, Azure Key Vault, Cosmos DB, Azure SQL, MSSQL Server, GitHub, CI/CD, Entra ID,

C#, .Net 8, .Net, dotnet, Azure, Azure App Services, Azure Service Bus, Azure Containers, Blob Storage, Azure Key Vault, Cosmos DB, Azure SQL, MSSQL Server, GitHub, CI/CD, Entra ID,

C#, .Net 8, .Net, dotnet, Azure, Azure App Services, Azure Service Bus, Azure Containers, Blob Storage, Azure Key Vault, Cosmos DB, Azure SQL, MSSQL Server, GitHub, CI/CD, Entra ID,

C#, .Net 8, .Net, dotnet, Azure, Azure App Services, Azure Service Bus, Azure Containers, Blob Storage, Azure Key Vault, Cosmos DB, Azure SQL, MSSQL Server, GitHub, CI/CD, Entra ID, SOLID, SOLID, SOLID, SOLID, SOLID, Agile, Agile, Agile, Agile, Agile

If you are interested in this position please click ‘apply’.

Hunter Selection Limited is a recruitment consultancy with offices UK wide, specialising in permanent & contract roles within Engineering & Manufacturing, IT & Digital, Science & Technology and Service & Sales sectors.

Please note as we receive a high level of applications we can only respond to applicants whose skills & qualifications are suitable for this position. No terminology in this advert is intended to discriminate against any of the protected characteristics that fall under the Equality Act 2010.

For the purposes of the Conduct Regulations 2003, when advertising permanent vacancies we are acting as an Employment Agency, and when advertising temporary/contract vacancies we are acting as an Employment Business

ContrOCC system developer
Baltimore Consulting Limited
Nottingham
Hybrid
Mid - Senior
£500/day
RECENTLY POSTED
TECH-AGNOSTIC ROLE

ControCC System Developer – Children’s Social Care

Initial 6 Month Contract
£500 per day (umbrella)
Full time (remote/hybrid working supported)
Midlands

We are seeking a highly skilled and technically experienced ControCC System Developer to support our client’s Children’s Social Care service during a critical period of system upgrade, service remapping, and alignment with national Social Care Reforms and Families First. This interim role will sit within the Improvement and Inspection Readiness Service, driving system performance and ensuring readiness for regulatory scrutiny.

This is a pivotal opportunity for an experienced ControCC specialist to ensure stability, compliance, and a high‑performing system environment that enables insight‑driven operational decision‑making across Children’s Services.

About your role as ControCC System Developer – Children’s Social Care

You will be responsible for leading the configuration, development, and optimisation of the ControCC finance and payments system in line with recent upgrades and revised workflow mapping.
Working closely with Liquidlogic colleagues, operational teams, and finance, you will ensure that the system accurately supports Children’s Social Care practice, financial processes, and inspection expectations.
This role requires someone with deep technical knowledge of ControCC within a Children’s Social Care setting, capable of operating autonomously, picking up complex system logic, and implementing improvements at pace.
Leading the technical development, configuration, and enhancement of the ControCC system to ensure it aligns with updated Children’s Social Care pathways, workflows, and finance arrangements.
Supporting system remapping work following Liquidlogic upgrades and changes linked to national Social Care Reforms and Families First.
Identifying, diagnosing, and resolving system performance issues, data gaps, and configuration errors.
Providing specialist advice to operational managers, finance teams, and performance colleagues on how ControCC data and workflows impact practice and reporting.Your experience as ControCC System Developer – Children’s Social Care

Extensive hands‑on experience with ControCC, specifically within Children’s Social Care finance, payments, and commissioning workflows.
Strong understanding of Liquidlogic LCS/EHM and how it integrates and aligns with ControCC processes.
Demonstrable experience delivering system changes following platform upgrades or service redesign.
Knowledge of Children’s Social Care practice pathways, including Early Help, Child in Need, Child Protection, and Looked After Children financial processes.
Experience supporting inspection readiness or working within an improvement‑focused service.
Excellent analytical and problem‑solving skills, including interpreting system logic, testing configuration, and implementing solutions.
Ability to work independently, manage competing priorities, and deliver high‑quality system changes at pace.
Strong communication skills, able to translate complex technical issues for non‑technical stakeholders.If you’re interested in discussing this opportunity in more detail or know someone who may be a good fit, please contact Leah Overend on (phone number removed) or apply today.

(We offer a senior referral scheme upon successful placement of your recommendation — please do get in touch.)

Recruiting decisions are based on experience and skills. Any reasonable adjustments will be fully supported during the application and hiring process

GPU Software Engineer
Sanderson Recruitment
Portsmouth
Hybrid
Mid - Senior
£550/day
RECENTLY POSTED

£550/day Inside IR-35

Portsmouth - 3 days per week on site

Initial 4 month contract

We’re looking for a Software Engineer to work within a Space Systems Engineering team, developing custom parallel algorithms and accelerating the processing of large-scale imagery and data on GPU platforms.

Key technical skills:

C++ development and GPU programming frameworks

Parallel programming concepts and GPU architecture

Linux systems engineering

Profiling and debugging tools for GPU code

What you’ll be doing:

Designing and implementing parallel algorithms for GPUs where existing libraries aren’t sufficient

Building GPU-ready code for vectorisation, parallel execution and large-scale data processing

Offloading CPU-heavy imaging, simulation or ML workloads onto multi-GPU Linux systems

Producing benchmarks, validating performance gains and ensuring numerical correctness

Experience with GPU acceleration in gaming or AI development is also relevant.

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

Software Engineer
Belcan Technical Recruiting (UK) Ltd
Newcastle upon Tyne
Hybrid
Mid
£70/hour
RECENTLY POSTED

Location:Newcastle (60% onsite)

Contract:12 Months with strong likelihood of extension

Hours:35 per week (4.5-day week between 7am-7pm, business discretion)

IR35:Inside of IR35

Pay:£52.32 p/h PAYE / £70 p/h Umbrella

Our Client, a leader in advanced technology solutions within the Defence & Space sector, is seeking a skilled Software Engineer to join their innovative and collaborative Agile Scrum team. Working with cutting-edge cloud technologies and geospatial software, you will contribute to every stage of the development lifecycle-from design through to deployment.

Key Responsibilities

Develop high-quality, readable, and maintainable code using Java and modern cloud-based technologies.

Create scalable and reusable software patterns to support ongoing development velocity.

Participate in production of unit and automated tests to ensure robust software delivery.

Conduct and contribute to design and code reviews, ensuring adherence to best practices, security standards, and maintainability guidelines.

Document developed solutions and share technical knowledge with the wider team.

Actively contribute to Agile ceremonies including sprint planning, daily stand-ups, and sprint reviews.

Work collaboratively with the Scrum team to meet sprint objectives and delivery commitments.

Maintain awareness of compliance risks and uphold integrity in all work activities.

Essential Skills

Strong experience with Java

Cloud services development

Unit testing and automated testing practices

Desirable Skills

DevSecOps tools and pipelines (e.g., Tekton, ArgoCD, SonarQube)

Experience with Red Hat OpenShift or Kubernetes

Experience using the Quarkus framework

Front-end development skills (e.g., Angular)

Given the role’s nature, the selected candidate will undergo BPSS clearance before commencing and will subsequently obtain SC clearance.

If you think this could be a new and exciting career opportunity for you and you would like to learn more or just for an initial, no-obligation conversation please contact me on 07732 694 243 or you can apply directly by following the Easy Apply link and I will contact you as soon as I receive your contact details.

This vacancy is being advertised by Belcan

TPBN1_UKTJ

Contract Applications Developer - C++/Windows
Verso Recruitment
UK
Hybrid
Mid - Senior
Private salary

Job Title: Contract Applications Developer - C++/Windows
Location: Cambridge
Rate: We know rate transparency matters. While we can’t list a figure on this advert, we are more than happy to disclose immediately upon application
Employment Type: Contract - 6 Month Contract
Working Arrangements: Hybrid working (3 days on site, 2 from home)

A contract opportunity for an experienced Contract Applications Developer - C++/Windows to join a high‑performance engineering team in Cambridge, working on motor control, embedded systems, and cross‑platform development across Windows and Linux. This is an initial 6‑month contract with strong potential for extension.

You will develop and enhance software that drives complex motor‑control systems used in advanced engineering environments. The work involves low‑level control, real‑time performance, and robust cross‑platform implementation. Collaboration with electronics, firmware, and systems engineers is central to the role.

Key Responsibilities

  • Design, develop, and maintain C++ applications for motor‑control systems
  • Implement and optimise algorithms for real‑time motor control
  • Develop software for Windows and Linux environments
  • Integrate software with motor drivers and controllers

Essential Skills and Experience

  • Strong commercial experience in modern C++ (C++14/17)
  • Proven background in motor control, motion systems, or embedded control loops
  • Confident working across Windows and Linux platforms
  • Experience with hardware interaction, device drivers, or real‑time systems
  • Solid understanding of multithreading, performance optimisation, and low‑level debugging
  • Ability to work independently in a fast‑paced R&D environment

This contract does not accept candidates operating through a Personal Service Company (PSC). Therefore, you will be required to work through an Umbrella company.

For more information, please contact Cathy Swain.
T: 01582 350053
E:

Software Engineer
Belcan Technical Recruiting Ltd
Newcastle upon Tyne
Hybrid
Mid - Senior
£70/hour

Location:Newcastle (60% onsite)

Contract:12 Months with strong likelihood of extension

Hours:35 per week (4.5-day week between 7am-7pm, business discretion)

IR35:Inside of IR35
Pay:£52.32 p/h PAYE / £70 p/h Umbrella

Our Client, a leader in advanced technology solutions within the Defence & Space sector, is seeking a skilled Software Engineer to join their innovative and collaborative Agile Scrum team. Working with cutting-edge cloud technologies and geospatial software, you will contribute to every stage of the development lifecycle-from design through to deployment.

Key Responsibilities

  • Develop high-quality, readable, and maintainable code using Java and modern cloud-based technologies.
  • Create scalable and reusable software patterns to support ongoing development velocity.
  • Participate in production of unit and automated tests to ensure robust software delivery.
  • Conduct and contribute to design and code reviews, ensuring adherence to best practices, security standards, and maintainability guidelines.
  • Document developed solutions and share technical knowledge with the wider team.
  • Actively contribute to Agile ceremonies including sprint planning, daily stand-ups, and sprint reviews.
  • Work collaboratively with the Scrum team to meet sprint objectives and delivery commitments.
  • Maintain awareness of compliance risks and uphold integrity in all work activities.

Essential Skills

  • Strong experience with Java
  • Cloud services development
  • Unit testing and automated testing practices

Desirable Skills

  • DevSecOps tools and pipelines (e.g., Tekton, ArgoCD, SonarQube)
  • Experience with Red Hat OpenShift or Kubernetes
  • Experience using the Quarkus framework
  • Front-end development skills (e.g., Angular)

Given the role’s nature, the selected candidate will undergo BPSS clearance before commencing and will subsequently obtain SC clearance.

If you think this could be a new and exciting career opportunity for you and you would like to learn more or just for an initial, no-obligation conversation please contact me on 07732 694 243 or you can apply directly by following the Easy Apply link and I will contact you as soon as I receive your contact details.

This vacancy is being advertised by Belcan

Software Developer
Experis
City of London
Fully remote
Junior - Mid
£600/day - £601/day
+6

6-12 months London - Remote £600 per day inside IR35 - umbrella only Overview Our developers work within multidisciplinary Agile teams to deliver secure, robust, and user centred digital services. The role involves building high quality software, contributing to technical design, and continually improving codebases to meet service and safety requirements. Soft Skills & Behaviours: Clear and confident communicator , able to work with designers, product teams, testers, engineers, and external partners. Highly collaborative , supporting team success and contributing to shared goals. Positive, engaged, and proactive , bringing energy to team ceremonies and wider delivery activities. Comfortable with change , able to work through evolving requirements or priorities. Keen to learn and share knowledge , contributing to code reviews, pair?programming, and community?of?practice activities. Experienced working within Agile delivery , contributing to stand-ups, planning, reviews, retrospectives, and show?and?tell sessions. Delivers with quality , making sensible trade-offs and managing technical debt thoughtfully. Stays informed about modern technologies and practices , promoting proportionate adoption of tools that add value. Technical Skills & Responsibilities: Intermediate to advanced practical experience with: React and TypeScript Python AWS services i.e. Athena/Glue, DynamoDB, ECS, S3, Lambda, SQS, Step Function, etc Automated testing frameworks for Python and JavaScript Terraform for infrastructure-as-code Agile delivery workflows Tooling experience: Git Jira Confluence Desirable (Nice to Have): Cypress GitHub Actions Splunk Other Requirements: Eligible for BPSS and SC clearance , due to interaction with sensitive or protected systems. Previous NHS experience is desirable , including understanding of NHS digital services or national systems. Exposure to digital product development and live?service environments is advantageous. TPBN1\_UKTJ

Software Engineer
Belcan
Newcastle upon Tyne
Hybrid
Mid
£70/hour

Location:Newcastle (60% onsite)

Contract:12 Months with strong likelihood of extension

Hours:35 per week (4.5‑day week between 7am-7pm, business discretion)

IR35:Inside of IR35
Pay:£52.32 p/h PAYE / £70 p/h Umbrella

Our Client, a leader in advanced technology solutions within the Defence & Space sector, is seeking a skilled Software Engineer to join their innovative and collaborative Agile Scrum team. Working with cutting‑edge cloud technologies and geospatial software, you will contribute to every stage of the development lifecycle-from design through to deployment.

Key Responsibilities

Develop high‑quality, readable, and maintainable code using Java and modern cloud-based technologies.
Create scalable and reusable software patterns to support ongoing development velocity.
Participate in production of unit and automated tests to ensure robust software delivery.
Conduct and contribute to design and code reviews, ensuring adherence to best practices, security standards, and maintainability guidelines.
Document developed solutions and share technical knowledge with the wider team.
Actively contribute to Agile ceremonies including sprint planning, daily stand-ups, and sprint reviews.
Work collaboratively with the Scrum team to meet sprint objectives and delivery commitments.
Maintain awareness of compliance risks and uphold integrity in all work activities.

Essential Skills

Strong experience with Java
Cloud services development
Unit testing and automated testing practices

Desirable Skills

DevSecOps tools and pipelines (e.g., Tekton, ArgoCD, SonarQube)
Experience with Red Hat OpenShift or Kubernetes
Experience using the Quarkus framework
Front‑end development skills (e.g., Angular)

Given the role’s nature, the selected candidate will undergo BPSS clearance before commencing and will subsequently obtain SC clearance.

If you think this could be a new and exciting career opportunity for you and you would like to learn more or just for an initial, no-obligation conversation please contact me on (phone number removed) or you can apply directly by following the Easy Apply link and I will contact you as soon as I receive your contact details.

This vacancy is being advertised by Belcan

Junior C# Developer - SC Cleared
VIQU IT
London
Hybrid
Junior
£300/day - £350/day

Junior C# Developer 6-month contract London SC Cleared Inside IR35

My Financial Services customer is looking for a Junior C# Developer, that will play a key role in triaging and resolving technical queries during the development of the Synchronisation Lab to act as a platform for industry to demonstrate use cases and understand business models for synchronisation. The Junior C# Developer will proactively engage with Product and development teams to ensure timely responses to queries.

You ll be joining a collaborative, forward-thinking engineering team delivering scalable, secure, and high-performing solutions within Azure

Junior C# Developer Skills & Experience required:
• Active SC Clearance.
• Strong hands-on experience with C#, .NET.
• Experience with Agile ways of working.
• Experience with a Microsoft Azure based environment.
• Experience in the Financial Services sector.
• High level support with incident response and troubleshooting.
• Eagerness to learn and improve interpersonal skills.

Junior C# Developer Key Responsibilities:
• Triaging and resolving technical queries.
• Build and maintain database structures and queries using SQL.
• Support the enhancement of synchronisation models based on participant feedback.
• Collaborate with developers and the production team.
• Delivering the technical release of later synchro models.

You must be able to work onsite 2 days per week in London.

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

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

Contract AI Systems Architect
Spectrum IT Recruitment
Reading
Fully remote
Senior - Leader
Private salary

Duration: 3-6 months

IR35 Status: Outside IR35

Location: Fully Remote Working

We are partnering with an ambitious start-up venture building a next-generation AI-powered decision intelligence platform for cybersecurity leaders. They are seeking an experienced contract AI Systems Architect to lead the architecture and delivery of a structured, guard railed AI engine designed for enterprise use. This is a high-impact contract role suited to someone who thrives at the intersection of product logic and advanced AI systems design. The successful contract AI architect will oversee the build of the core intelligence system, working directly with the founders.

Key Responsibilities

Architecture & System Design

  • Define the end-to-end AI pipelines
  • Design structured JSON schemas for inputs and outputs
  • Architect a robust RAG framework (vector database, chunking strategy etc)
  • Design domain and geography-aware retrieval logic

AI Orchestration & Guardrails

  • Develop modular, section-based prompt orchestration
  • Enforce structured JSON outputs
  • Implement hallucination controls and citation enforcement
  • Introduce prompt version control
  • Build section confidence scoring and validation logic

Retrieval & Evidence Framework

  • Define ingestion structures for curated regulatory and incident sources
  • Oversee embedding and chunking strategy
  • Implement evidence weighting tiers
  • Ensure citation traceability and validation

Technical Leadership

  • Act as technical lead across the offshore development team
  • Define sprint scope and architectural standards
  • Review pull requests and technical decisions
  • Ensure delivery aligns with product logic
  • Maintain pragmatic scope control

Key Experience

  • Proven experience building production-grade LLM systems
  • Hands-on RAG implementation
  • Experience with OpenAI and Anthropic APIs
  • Strong vector database experience
  • Backend architecture expertise (Node.js or Python)
  • Experience designing structured JSON pipelines
  • Experience working with offshore development teams
  • B2B SaaS background would be highly desirable

This is a unique position that allows a contractor the opportunity to architect a structured AI intelligence system from first principles in a high-autonomy environment. If you’re a UK-based contract AI systems architect with deep RAG experience and strong product logic instincts, please apply to the role immediately.

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

Software Developer
Experis IT
London
Fully remote
Junior - Mid
£600/day
+2

6-12 months
London - Remote
£600 per day inside IR35 - umbrella only

Overview
Our developers work within multidisciplinary Agile teams to deliver secure, robust, and user centred digital services. The role involves building high quality software, contributing to technical design, and continually improving codebases to meet service and safety requirements.

Soft Skills & Behaviours:
Clear and confident communicator, able to work with designers, product teams, testers, engineers, and external partners.

  • Highly collaborative, supporting team success and contributing to shared goals.
  • Positive, engaged, and proactive, bringing energy to team ceremonies and wider delivery activities.
  • Comfortable with change, able to work through evolving requirements or priorities.
  • Keen to learn and share knowledge, contributing to code reviews, pair programming, and community of practice activities.
  • Experienced working within Agile delivery, contributing to stand-ups, planning, reviews, retrospectives, and show and tell sessions.
  • Delivers with quality, making sensible trade-offs and managing technical debt thoughtfully.
  • Stays informed about modern technologies and practices, promoting proportionate adoption of tools that add value.

Technical Skills & Responsibilities:
Intermediate to advanced practical experience with:

  • React and TypeScript
  • Python
  • AWS services ie Athena/Glue, DynamoDB, ECS, S3, Lambda, SQS, Step Function, etc
  • Automated testing frameworks for Python and JavaScript
  • Terraform for infrastructure-as-code
  • Agile delivery workflows

Tooling experience:

  • Git
  • Jira
  • Confluence

Desirable (Nice to Have):

  • Cypress
  • GitHub Actions
  • Splunk

Other Requirements:

  • Eligible for BPSS and SC clearance, due to interaction with sensitive or protected systems.
  • Previous NHS experience is desirable, including understanding of NHS digital services or national systems.
  • Exposure to digital product development and live’service environments is advantageous.
Logic App Developers
Lawrence Harvey
Not Specified
Hybrid
Mid - Senior
Private salary

Azure Integration Engineer - £550-£650 per day Outside IR35 depending on skill set match My client are interviewing for an Azure Integration Engineer with experience using Logic Apps to integrate between D365 F&O and Salesforce to start on a 6 month contract. This is a technical role with some functional skill set. In this role you will be working through revisions & updates and then moving onto new orders. Experience with integrating between Salesforce and D365 F&O is desired and the rate will be nearer the top end if you have hands on experience with both systems. Here are the general details: Title: Azure Integration Engineer Location: Hybrid Work mode: Fully remote Role type: Contractor (Outside IR35) Contract duration: 6 months Rate: Around £550-£650 a day Outside IR35 depending on specialism If you're interested, please apply here or send your CV to (url removed) so we can arrange a call to disclose project info. Interviews will take place next week. Thank you!

Junior Architect - Azure & Java
IntaPeople
South Glamorgan
Remote or hybrid
Junior
£475/day - £500/day

A leading global technology organisation is seeking a hands on Junior Architect to join a high performing engineering group building secure, scalable, cloud native platforms. You ll work on modern Azure and Java solutions that will underpin future AI driven capabilities, perfect for someone who enjoys solving complex technical challenges and shaping architecture within a large-scale environment.

You ll collaborate closely with senior architects and engineering teams to design, build, and evolve cloud-native services on Azure. This is a highly technical role where you ll influence architectural decisions while remaining actively involved in coding, reviewing, and improving Java-based microservices.

Key responsibilities include:

  • Designing and delivering Azure-hosted Java microservices and platform components.
  • Building and maintaining CI/CD pipelines using GitHub or Azure DevOps, ensuring high standards of quality, security, and observability.
  • Performing complex Java development, code reviews, and mentoring developers on best practices.
  • Modelling and optimising data flows, working closely with data engineering teams to ensure reliability and performance.
  • Documenting architectures, supporting production readiness, and helping prevent incidents.
  • Modernising legacy technologies and adapting to internal Java-based frameworks and toolsets.
  • Contributing to the organisation s long-term AI readiness through data, service, and governance improvements.

What you’ll bring:

  • 10+ years software engineering experience, including 4+ years in Azure/Java architecture or similar.
  • Strong data engineering awareness: modelling, pipelines, performance tuning, SQL/NoSQL, and data governance familiarity.
  • Deep Java expertise (Spring ecosystem) with the ability to design, develop, and review complex code.
  • Solid experience with microservices architecture and distributed systems.
  • Hands-on experience with containers/Kubernetes (AKS), Git workflows, and DevSecOps practices.
  • Flexibility to work with legacy stacks and internal frameworks.
  • Experience with Cosmos DB or large-scale data migration projects is a bonus.
  • Clear communication and collaboration skills within Agile teams.
  • Degree in Computer Science/Engineering or equivalent experience.

You ll be joining a collaborative, international engineering environment with a clear roadmap toward AI enabled capabilities. This is a long term contract with strong potential for extension, offering full remote working with occasional travel (once a month or every other month) to London or Cardiff.

With interview slots planned for w/c 9 March 2026, early applications are encouraged. Send your CV for a confidential conversation today.

Murex Datamart Developer
Arm
London
Hybrid
Mid - Senior
£600/day - £675/day

7-8 Month contract
3 days per week on site in Central London
(Apply online only) per day (Inside IR35)

Job Summary:
We are seeking an experienced Murex consultant based onshore (London) with a strong background in the MX3.1 Datamart module. The ideal candidate will possess a very good technical understanding of the Murex platform and its reporting functionality, and ideally have a sound working knowledge of rates, FX, credit and commodities products.
The candidate will be responsible for working on Murex reporting changes, enhancements and bug fixes for business users of the application. The will cover development, testing and preparation for release to production.

Responsibilities on the role-
Handle the end to end design, development and deployment packaging of Murex Datamart solutions aligning with user requirements
Configure and implement different Datamart objects with an optimized solution as per murex best practices
Work on reporting-related bugs and issues, and collaborate with users directly to understand the issues and requirements
Implement the agreed solutions and gather approval on the solution from user and downstream stakeholders
Handle the testing of the solution, documentation of the detailed technical specifications and runbook creation.
Reconcile report outputs and explain any differences
Participate in peer reviews of technical specifications and testing documentation

Technical Skills-

  1. Murex MX3.1 Datamart (required)
  2. SQL, Unix (required)
  3. GIT, Jenkins, JIRA, MxTest, Control-M (desirable)

Required Qualifications-
Bachelor’s degree in Finance, Computer Science, or a related field
Strong experience with Murex Datamart module
Strong technical skills, including proficiency in SQL, Unix/Linux and other relevant programming languages
Understanding of financial products including rates & commodities
Excellent problem-solving and analytical skills
Strong communication and interpersonal skills, with the ability to work effectively in a team environment

Disclaimer:

This vacancy is being advertised by either Advanced Resource Managers Limited, Advanced Resource Managers IT Limited or Advanced Resource Managers Engineering Limited (“ARM”). ARM is a specialist talent acquisition and management consultancy. We provide technical contingency recruitment and a portfolio of more complex resource solutions. Our specialist recruitment divisions cover the entire technical arena, including some of the most economically and strategically important industries in the UK and the world today. We will never send your CV without your permission. Where the role is marked as Outside IR35 in the advertisement this is subject to receipt of a final Status Determination Statement from the end Client and may be subject to change.

Senior Developer
UNIVERSITY OF STIRLING
Stirling
In office
Senior
£47,389/day - £56,535/day
+1

The Post

The Senior Developer plays a pivotal role in the design, development, delivery and ongoing maintenance of software systems that support the university’s strategic and operational needs. The postholder will lead development lifecycles, ensuring that software solutions are robust, secure, scalable and aligned with best practice.

Working in a rapidly evolving technological environment, the Senior Developer will take responsibility for creating, maintaining and improving systems, as well as diagnosing and resolving complex technical issues. The role requires close collaboration with stakeholders across the university, translating business requirements into effective technical solutions. As a subject matter expert, the post‑holder will also contribute to future planning, recommending improvements and innovations across the university’s digital ecosystem.

Description of Duties

  • Lead the design, development, coding, security and installation of software solutions across a wide range of information systems
  • Manage and oversee the full software development lifecycle of solutions
  • Work with business customers to assess operational feasibility by analysing requirements, defining problems, evaluating options and proposing solutions
  • Develop software solutions by engaging with stakeholders at all levels, understanding information needs, system flows, data usage and business processes
  • Investigate and resolve complex problem areas across systems and integrations
  • Contribute to the development and continuous improvement of the software development lifecycle
  • Produce high-quality documentation including flowcharts, diagrams, layouts, code comments and clear coding patterns to support maintainability
  • Supervise external developers and contractors, ensuring adherence to university coding standards and lifecycle processes
  • Support technical engagement with third-party suppliers and contract managers for cloud and on-premise systems
  • Define and implement system specifications, standards and programming approaches
  • Provide supervision, guidance and technical leadership to developers and other colleagues
  • Conduct systems analysis and recommend improvements to processes, policies and procedures
  • Use security-by-design to ensure the confidentiality, integrity and security of information and systems
  • Ensure systems meet required accessibility standards and support inclusive digital experiences

Essential Criteria

Qualifications and Experience

  • Bachelor’s and/or Master’s degree in Computer Science or related technical discipline
  • Substantial professional software development experience

Knowledge & Experience

  • Strong proficiency in Java development and use of APIs
  • Experience of modern CI/CD including version control
  • Experience across the full software development lifecycle, from conception and architecture through to delivery and maintenance
  • Strong understanding of professional software engineering practices, including coding standards, code reviews, source control, build processes, testing and operational support
  • Ability to ensure products and web services meet standards of security, reliability, cost‑effectiveness and scalability
  • Experience developing and supporting large‑scale enterprise applications
  • Experience working in cross‑functional teams and contributing to product and engineering decisions

Skills & Attributes

  • A customer‑focused approach to service design, delivery and evaluation
  • Excellent interpersonal, communication and advocacy skills
  • Strong written communication skills, with the ability to produce clear and concise documentation
  • Highly organised, with the ability to manage competing priorities and work systematically in a busy environment
  • Ability to gather, analyse and interpret information effectively
  • Ability to work both independently and collaboratively
  • High attention to detail and commitment to accuracy
  • Strong user‑centred approach to development
  • Logical thinking and strong analytical skills
  • Ability to work under pressure, independently and as part of a team
  • Strong problem‑solving and communication skills
  • Commitment to continuous professional development

Desirable Criteria

Knowledge & Experience

  • Experience working with student records systems such as Banner or SITS
  • Experience of Git, Jenkins or other relevant devops tools
  • Full‑stack development experience (frontend and backend)
  • Knowledge of ITIL, Prince2 or Agile
  • Experience with cloud platforms (e.g., Azure, AWS) and containerisation/orchestration tools such as Kubernetes and Docker

Additional Information

*X2 positions available*

Full time

Fixed term for up to 2 years

The closing date for applications is midnight on Thursday 26 March 2026.

Interviews are expected to take place on Wednesday 01 April 2026.

There is an expectation that work will be undertaken in the UK.

This role may be eligible for sponsorship depending on candidate circumstances under SOC code 2134.

The University of Stirling recognises that a diverse workforce benefits and enriches the work, learning and research experiences of the entire campus and greater community. We are committed to removing barriers and welcome applications from those who would contribute to further diversification of our staff and ensure that equality, diversity and inclusion is woven into the substance of the role. We strongly encourage applications from people from diverse backgrounds including gender, identity, race, age, class, and ethnicity.

For a full description of duties and essential/desirable criteria please click the apply button, which will take you directly to the University Website.

Full Stack Developer
ISR RECRUITMENT LIMITED
Not Specified
Remote or hybrid
Mid - Senior
£300/day - £325/day
+4

The Opportunity:

We are seeking a Full Stack Developer to join a live GOV-UK service environment in a hands-on role within an agile, autonomous delivery team.

You will contribute across both backend and frontend development, helping refine and evolve a live digital service where user impact and service reliability are paramount.

The role requires strong technical delivery capability, sound engineering judgement and the confidence to engage constructively with both technical and non-technical stakeholders.

This is not a maintenance-only position, you will play an active role in architectural discussions, continuous improvement and shaping the technical direction of the service.

Skills and Experience:

  • Ruby on Rails
  • Java (Spring Boot)
  • AWS
  • Experience deploying and managing serverless applications within AWS (Lambda and/or Fargate).
  • Infrastructure as Code experience using Terraform.
  • Solid working knowledge of PostgreSQL.
  • Experience with Git, CI/CD pipelines and cloud-based development environments.
  • Proven experience working within agile teams on live services, working closely with user-centred designers.
  • Experience working within GDS/GOV-UK service standards would be ideal.

Role and Responsibilities:

  • Build and maintain backend services using Java (Spring Boot) and PostgreSQL.
  • Develop and enhance frontend functionality using Ruby on Rails and GOV-UK frontend.
  • Contribute to architectural decisions and technical direction.
  • Write clean, maintainable, well-tested code in line with modern engineering standards.
  • Participate in code reviews, agile ceremonies and iterative delivery cycles.
  • Ensure changes are assessed carefully for impact on live users.
  • Support demonstrations and provide clear technical updates to clients and stakeholders.
  • Collaborate with technical and non-technical stakeholders to refine and improve a live GOV-UK service.
  • Working alongside user-centred designers to improve user experience.
  • Engaging directly with clients and explaining technical concepts clearly.

NB: The successful candidate will be required to undergo a basic level of security clearance before undertaking the assignment (two to four weeks lead-time).

Applications:

Please contact Edward Laing here at ISR to learn more about our client and how they are leading the way in developing the next generation of technical solutions through innovation and transformational technology

Java Software Engineer II
Computer Futures
Manchester
Hybrid
Junior - Mid
£62/hour
+6

Software Engineer II Hybrid: Manchester (1 day a week) Inside IR35: £500 Duration: 6 months Tech Stack: Java / Spring Boot, SQL Server, AWS, Kubernetes, CI/CD. Node.js/Python and SSIS experience is a bonus. A technology‑driven team is seeking an experienced Software Engineer II to support the design, build and operation of backend services within a financial data environment. This role is ideal for someone who values strong engineering practices, autonomy, and cross‑functional collaboration. You will help develop and operate backend systems that deliver accurate, timely financial data to critical enterprise processes. The role includes hands-on development, production support, and ensuring compliance with key regulatory frameworks such as SOX and GDPR/PII. Java / Spring Boot Python & Node.js Microsoft SQL Server, SQL optimisation SSIS (bonus) AWS Kubernetes, Docker CI/CD tooling Infrastructure as Code (TypeScript, AWS CDK) Exposure to Apache Spark is a plusIf this sounds like you, please apply. Please click to find out more about our Key Information Documents. Please note that the documents provided contain generic information. If we are successful in finding you an assignment, you will receive a Key Information Document which will be specific to the vendor set-up you have chosen and your placement. To find out more about Computer Futures please visit Computer Futures, a trading division of SThree Partnership LLP is acting as an Employment Business in relation to this vacancy | Registered office | 8 Bishopsgate, London, EC2N 4BQ, United Kingdom | Partnership Number | OC(phone number removed) England and Wales

Contract Applications Developer - C++/Windows
Verso Recruitment Group
Cambridgeshire
Hybrid
Mid - Senior
Private salary

Job Title: Contract Applications Developer - C++/Windows
Location: Cambridge
Rate: We know rate transparency matters. While we can t list a figure on this advert, we are more than happy to disclose immediately upon application
Employment Type: Contract - 6 Month Contract
Working Arrangements: Hybrid working (3 days on site, 2 from home)

A contract opportunity for an experienced Contract Applications Developer - C++/Windows to join a high performance engineering team in Cambridge, working on motor control, embedded systems, and cross platform development across Windows and Linux. This is an initial 6 month contract with strong potential for extension.

You will develop and enhance software that drives complex motor control systems used in advanced engineering environments. The work involves low level control, real time performance, and robust cross platform implementation. Collaboration with electronics, firmware, and systems engineers is central to the role.

Key Responsibilities

  • Design, develop, and maintain C++ applications for motor control systems
  • Implement and optimise algorithms for real time motor control
  • Develop software for Windows and Linux environments
  • Integrate software with motor drivers and controllers

Essential Skills and Experience

  • Strong commercial experience in modern C++ (C+/17)
  • Proven background in motor control, motion systems, or embedded control loops
  • Confident working across Windows and Linux platforms
  • Experience with hardware interaction, device drivers, or real time systems
  • Solid understanding of multithreading, performance optimisation, and low level debugging
  • Ability to work independently in a fast paced R&D environment

This contract does not accept candidates operating through a Personal Service Company (PSC). Therefore, you will be required to work through an Umbrella company.

For more information, please contact Cathy Swain.
T: (phone number removed)
E: (url removed)

Data Engineer
Experis
London
Fully remote
Mid - Senior
£500/day - £510/day

Onsite Requirements: Remote
Start Date: ASAP
Role Duration: 1 year
Clerance Requirements: Active SC clearance
Inside IR35 - umbrella only

Role Description:
We’re looking for a Data Engineer whose main focus is understanding and documenting existing systems, with the goal of supporting decommissioning activities. The role centres on analysing current solutions built using Java, Node JS, and React, and developing a clear, end to end picture of how data flows across the wider programme.
This includes documenting data flows, system dependencies, and underlying data models, ensuring there is a clear record of how data is structured, stored, and used throughout the solution. The role involves investigating how systems are used on a day-to-day basis, clarifying ownership and integration points, and capturing this information in a way that supports risk assessment and decommissioning decisions.

Responsibilities:
Python and PySpark are required as supporting capabilities, used where needed to analyse data pipelines and confirm how data moves and transforms in practice. The role also requires strong experience with testing and data quality management, ensuring that documented data flows and models are accurate and trusted. Experience working in cloud environments such as AWS or Azure is expected, with Databricks considered a nice to have.
Required Skills:

  • Java background
  • Node JS
  • Json
  • RDS
  • React
  • Data Modelling
  • Python / Spark
  • Cloud experience (AWS / Azure) o AWS Glue o Databricks
  • Testing e.g. PyTest
  • Data Quality e.g. Great Expectations
SQL Server DBA
Syntax Consultancy Ltd
London
Hybrid
Mid - Senior
£350/day - £400/day

SQL Server DBA (SC Cleared)

London (Hybrid)

6 Month Contract

to £350/day-£400/day (Inside IR35)

SQL Server DBA needed with active SC Security Clearance, SQL Server databases.

6 Month Contract based in Central London (Hybrid). Start ASAP in March 2026.

Hybrid Working - 2 days/week remote (WFH), and 3 days/week working on-site from the London office.

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

  • Experienced SQL Server DBA or similar role, Performance Tuning and Optimization (PTO)
  • Must have in-depth experienced, Manage SQL Server databases, Configure and maintain database servers and processes, Backups, restores and recovery models.
  • High Availability (HA) and Disaster Recovery (DR) options for SQL Server and experience with Windows server, including Active Directory
  • Monitor system s health and performance, including ensure high levels of performance, availability, sustainability and security
  • Analyze, solve, and correct issues in real time and Refine and automate regular processes, track issues, and document changes
  • Assist developers with query tuning and schema refinement
  • Provide 24 7 support for critical production systems
  • Perform scheduled maintenance and support release deployment activities after hours
  • MCTS, MCITP, and/or MVP certifications a plus
  • Banking / Financial Services domain experience preferred.
  • Must hold active SC Security Clearance used on a project within the past 12 Months.
Frequently asked questions
Haystack features a wide range of contract Backend Engineer positions, including roles in startups, mid-sized companies, and large enterprises across various industries such as fintech, healthcare, and e-commerce.
To apply, simply create a profile on Haystack, upload your resume, and submit your application directly through the job listing. Some employers may require additional screening or coding tests.
Haystack offers both remote and on-site contract Backend Engineer positions. You can filter job listings based on location preferences to find opportunities that match your availability.
Commonly required skills include proficiency in backend programming languages like Java, Python, Ruby, or Node.js, experience with databases such as MySQL or MongoDB, and familiarity with cloud platforms like AWS or Azure.
Yes, many contract Backend Engineer jobs on Haystack allow for negotiation on contract length, hourly rate, and other terms. Communication with the employer or recruiter during the interview process will help clarify these details.