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Overview
Looking for remote Backend Engineer jobs? Discover top remote backend developer opportunities on Haystack, where skilled engineers connect with leading tech companies. Explore the latest backend engineering roles that offer flexibility, competitive salaries, and growth—all from the comfort of your home. Start your remote backend engineer career today with Haystack!
Senior Developer React
ARC IT Recruitment Ltd
Sutton
Remote or hybrid
Senior
£80,000
RECENTLY POSTED

SeniorDeveloper(Node/React)

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

You’llplayakeyroleindesigninganddevelopingend-to-endsolutions,collaboratingcloselywithbothtechnicalandbusinessteamstodelivernewfeaturesthatdrivegrowthandenhancethecustomerexperience.

WhatYou’llDo

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

WhatYou’llBring

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

NicetoHave

  • DegreeinComputerScienceorarelatedfield
  • ExperienceineCommercesectors
  • FamiliaritywithCI/CDtoolssuchasJenkinsorGitHubActions

WhyYou’llLoveItHere

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

Location:London

Salary:£80k/perannum

Senior Software Engineer
Pioneer Selection Ltd
Multiple locations
Fully remote
Senior
£450/day
RECENTLY POSTED

Senior Software Engineer - (9 month contract)

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

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

Non Negotiable skills required for the Senior Software Engineer

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

The Senior Software Engineer will benefit from:

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

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

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

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

JAX RS- Quarkus Developer
iBSC
Edinburgh
Remote or hybrid
Senior - Leader
£350/day
RECENTLY POSTED

Be a technical leader within your feature team, providing day-to-day line management, as well as providing leadership in the wider Lab and community, coaching and/or mentoring other engineers, helping them to grow. Collaborate with product and engineering leads to realise the Lab's vision and deliver customer outcomes through robust, scalable, and maintainable services that underpin exceptional customer experiences. Be curious about technology and look to foster a culture of innovation. You'll influence positively demonstrating the right values and behaviours as we improve how we deliver. What we're looking for A capable technical leader, who takes ownership of design and delivery, helping to grow our junior engineers capabilities and understanding of target architectures and patterns. Working in the public cloud domain at scale, primarily with GCP. Strong programming skills with a good working knowledge of Java, Spring Boot/Quarkus & REST APIs, hosting microservices in a container orchestration platform such as Kubernetes. Any experience of mobile native development would be beneficial. Diverse technical experience and a proven ability to deliver high quality applications at scale. Strong knowledge of security patterns and best practice advantageous. You will lead and inspire teams to explore, adopt and responsibly integrate AI-driven solutions to achieve great customer outcomes and improve our engineering experience. You're able to effectively communicate and work together across engineering to maximise inner-sourcing opportunities and reduce waste. You're an advocate for quality and can support the team leveraging approaches such as CI/CD best practice, Pair Programming, TDD and BDD. What you'll get to learn (any previous experience would be advantageous) Solving real world problems and being comfortable working in a complex regulated environment

Lead Software Developer
Oscar Associates (UK) Limited
Warrington
Fully remote
Senior
£70,000
RECENTLY POSTED
+8

Full Stack Technical Lead - Remote - £65k-£70k (DOE) I'm working with an exciting organisation that is looking for a Full Stack Technical Lead to take ownership of modern cloud-based applications and lead development within a defined architectural framework. This is an excellent opportunity for a senior full-stack engineer who enjoys remaining hands-on while influencing architecture, enforcing engineering standards, and driving secure development practices across a high-performing team. Key Responsibilities You will be responsible for: Designing and developing scalable backend services using .NET 10.0.2 and ASP.NET Core Web APIs Building and maintaining Angular 21 front-end applications using DevExpress DevExtreme v25 components Leading secure, Azure-native cloud implementations Building and maintaining Infrastructure as Code using Bicep Implementing authentication and role-based access via Azure Entra ID Integrating Azure Key Vault for secure secret management across environments Writing and maintaining unit and integration tests (NUnit and ViTest) Ensuring all development aligns with OWASP secure coding standards Contributing to CI/CD pipeline improvements and secure deployment practices Participating in architecture and technical design reviews Collaborating with UI/UX teams using Figma prototypes Maintaining high-quality technical documentation Tech Stack & Experience Core technologies: .NET 10 / ASP.NET Core Entity Framework Core RESTful API design / OpenAPI / Swagger Angular 21 (mandatory) TypeScript / RxJS DevExpress DevExtreme v25 (mandatory) Microsoft Azure (App Services, SQL, Storage) Azure Entra ID Azure Key Vault Infrastructure as Code (Bicep preferred) CI/CD pipelines (Azure DevOps or equivalent) Bitbucket (Git) What They're Looking For 7+ years' commercial software engineering experience 2+ years operating as a Technical Lead Strong full-stack expertise within the Microsoft ecosystem Proven experience with modern Angular (v15+) Hands-on Azure architecture and deployment experience Experience implementing Infrastructure as Code Strong understanding of secure enterprise application development Experience working in regulated or security-sensitive environments Solid grasp of RESTful API design and authentication patterns Ability to balance hands-on delivery with technical leadership responsibilities Desirable Experience Multi-environment Azure architecture design Angular performance optimisation Designing role-based access control systems Cloud cost optimisation practices Exposure to penetration testing and secure SDLC processes Experience contributing to architectural decision-making Salary & Benefits £65k-£70k (depending on experience) Remote working Structured architecture standards and modern tooling Exposure to enterprise-scale Azure environments Opportunity to influence engineering best practice and security standards Why This Role? This is a standout opportunity for a technical leader who wants real ownership of architecture, cloud infrastructure, and development standards - while staying close to the code. You'll join a technically mature environment where automation, security, and scalability are core priorities, not afterthoughts. If you're open to a confidential discussion, apply now and I'll be in touch. 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 Developer
Oscar Associates (UK) Limited
Warrington
Fully remote
Senior
£55,000
RECENTLY POSTED
+8

Senior Full Stack Developer - Remote - Competitive Salary I'm working with an exciting organisation that is looking to appoint a Senior Full Stack Developer to help design and deliver secure, cloud-native applications within a modern Microsoft and Azure ecosystem. This is an excellent opportunity for an experienced full-stack engineer who thrives in structured architectural environments and enjoys building scalable, enterprise-grade systems using the latest .NET and Angular technologies. Key Responsibilities You will be responsible for: Designing and developing scalable backend services using .NET 10 and ASP.NET Core Web APIs Building and maintaining Angular 21 front-end applications using DevExpress DevExtreme v25 Implementing Azure-native solutions (App Services, Azure SQL, Storage) Developing and maintaining Infrastructure as Code using Bicep Integrating Azure Entra ID for authentication and role-based access control Managing secure secrets via Azure Key Vault Writing and maintaining unit and frontend tests (NUnit and ViTest) Contributing to CI/CD pipeline improvements and secure deployment practices Participating in architecture and technical design reviews Ensuring all development aligns with OWASP security best practices Tech Stack & Environment Core technologies: .NET 10 / ASP.NET Core Angular 21 (mandatory) DevExpress DevExtreme v25 (mandatory) Entity Framework Core TypeScript / RxJS Microsoft Azure Azure Entra ID Azure Key Vault Bicep (Infrastructure as Code) CI/CD pipelines Bitbucket (Git) You'll also work closely with UI/UX teams using Figma and operate within Agile delivery frameworks. What They're Looking For 5+ years' commercial software development experience Strong expertise in modern .NET Proven experience with modern Angular (15+ ideally) Hands-on Azure architecture and deployment experience Experience implementing Infrastructure as Code (Bicep preferred) Experience integrating Azure Entra ID authentication Strong understanding of RESTful API design Experience implementing CI/CD pipelines Background working in regulated or security-sensitive environments Experience with DevExpress / DevExtreme is highly desirable. Why This Role? This is a standout opportunity for a senior engineer who values secure architecture, clean code, and modern Azure cloud engineering. You'll join a mature technical environment with clearly defined standards, strong DevOps practices, and a genuine commitment to security and scalability. If you're open to a confidential discussion, apply now and I'll be in touch. 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

Backend Software Engineer
Hays Technology
London
Remote or hybrid
Mid - Senior
£500/day - £550/day
+6

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

Java Software Engineer into Architect
Computer Futures
Bracknell
Fully remote
Mid - Senior
£450/day

Hiring: Java Software Engineer UK-Based | Remote | 12‑month contract | 450 per day I'm currently supporting the search for a highly capable Java Software Engineer looking to transition into Architecture to join a major transformation programme, leading the migration from on‑prem services into Azure. This isn't a junior role in experience - we're looking for someone with high-level architectural capability, strong communication skills, and the confidence to guide and oversee the work of experienced engineers. What You'll Be Doing Supporting the Senior Architect across a large-scale cloud migration Shaping data pipelines, data flows, and system-wide design Providing architectural oversight to senior developers Working across Java, Python and large data environments (design > coding) Bringing a strong, assertive technical voice to ensure delivery stays on track What we're looking for: ✔ Strong Java engineering experience ✔ Exposure to cloud migration (Azure ideal) ✔ Knowledge of Python or big‑data environments is a bonus ✔ Confident communicator who can work across multiple technical teams 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

Senior Software Engineer CCAI - FTC
Vermelo RPO
Manchester
Fully remote
Senior
Private salary

Role: Senior CCAI Engineer (12 month FTC)

Reports to: Principal CCAI Engineer

This is a remote opportunity.

Role Purpose:

The Contact Centre AI Engineer plays a pivotal role in delivering change across the Digital Customer Contact (DCC) product suite. This includes supporting the integration and evolution of the Google CCaaS platform, in-house systems, and cloud-native services. Seniors are expected to, where appropriate, provide technical leadership, and contribute to the development of mid & junior engineers. The role includes line management responsibilities.

Key Accountabilities and Responsibilities:

  • Lead and deliver SaaS initiatives, ensuring alignment with the DCC product roadmap.
  • Support the Principal Engineer in executing the technical strategy for the DCC SaaS product.
  • Develop and maintain full stack solutions using .NET, JavaScript, and Python.
  • Contribute to the design and deployment of serverless functions on Google Cloud Platform (GCP).
  • Assist in the development of Chrome extensions to enhance agent experience.
  • Implement secure authentication using JWT and OAuth 2.0.
  • Support CI/CD pipeline development and maintenance for Google Cloud technologies.
  • Collaborate with cross-functional teams to ensure successful delivery of features and integrations.
  • Manage and support API integrations using Apigee.
  • Participate in testing automation and quality assurance processes.
  • Provide mentorship and technical guidance to mid & junior engineers.
  • Where applicable, take on management responsibilities, including performance reviews and development planning.

Skills, Experience, and Knowledge:

  • Proven experience in full stack development, particularly in .NET and cloud-native environments.
  • Hands-on experience with GCP services including Contact Centre AI, GCP Functions, and Cloud Storage.
  • Familiarity with Chrome extension development and secure authentication protocols.
  • Experience with CI/CD pipelines and DevOps practices.
  • Strong understanding of API management using Apigee.
  • Proficiency in JavaScript and Python.
  • Exposure to Azure infrastructure and networking is a plus.
  • Demonstrated ability to lead delivery streams and mentor team members.
  • Excellent problem-solving, communication, and collaboration skills.

Customers and Key Stakeholders:

  • Work closely with the Principal Engineer and Head of Digital Customer Contact to align technical delivery with strategic goals.
  • Collaborate with Contact Centre Ops Managers, IT, and Data teams.
  • Engage with external partners and stakeholders to ensure delivery meets expectations.

What we offer in return?

  • A collaborative and fast paced work environment
  • Health care cash plan
  • Yearly bonus scheme
  • 24 days annual leave plus Bank Holidays and the ability to buy additional leave (annual leave also increases with service)
  • Life Assurance 4x annual salary
  • Vibrant, modern offices

About the business:

Markerstudy is a leading provider of private insurance in the UK, insuring around 5% of the private cars on the UK roads, 20% of commercial vehicles and over 30% of motorcycles in total premium levels of circa £1.2b. Markerstudy also has a large and growing direct presence in the market as well.

Software Engineer Filemaker
Vermelo RPO
Manchester
Remote or hybrid
Mid - Senior
Private salary

Software Engineer (Filemaker)

This is a flexible, hybrid role and can be based from either of our offices in Manchester or Southport. We also have largely remote options available.

Role Purpose:

As a Software Engineer, you will analyse, develop and test all areas of the technology using the appropriate processes, methods and standards of the software development lifecycle (SDLC). Working in a scrum agile environment, Software Engineers provide technological steering and software advancement for Markerstudy, its clients, subsidiaries and other group members to meet project goals. You will be involved in all aspects of the development process, taking responsibility for your own work and working to ensure the success of the team’s sprints. A good communicator, you will be working directly with other areas of the business to meet project goals.

Key Accountabilities and Responsibilities:

• Undertake development and delivery of features, components and systems, to ensure project success.

• Estimate the effort required to develop or update features, components or systems with reasonable accuracy.

• Follow best practise in development and unit testing of software to ensure minimal defect count in both testing and in the live environment.

• Follow the processes and stages of the software development life cycle, suggest updates and improvements of to this to Lead Software Engineer.

• Constructively review work undertaken by other engineers, such as by code collaboration and peer reviews, and proactively contribute to reviews of your work.

• Support the Scrum team in the successful planning and delivery of sprints.

• Provide updates to the team on the progress of work during daily stand-ups and meetings.

• Maintain a positive and solution-oriented approach to work, providing open and honest feedback

• Ensure compliance with IT and financial controls in all activities undertaken.

• Follow all documented business processes.

• Ensure your own continuous professional development by participating in external networking / conferences /associations / groups, to stay current on Industry developments & innovations. Encourage, support and coach other team members in their own development

• Undertake such other duties, training and/or hours of work as may be reasonably required and which are consistent with the general level of responsibility of this role.

Skills, Experience and Knowledge:

  • Experience as a professional Filemaker Developer
  • Filemaker v18+ experience
  • Creating Complex Scripts to manage data and workflow?
  • Use of Filemaker APIs
  • Relational Database Design?
  • Interaction with external systems (web APIs, WPE, XML, etc)?
  • Architecture and design of software systems.
  • Understanding and experience of the software development life cycle, agile methodology (especially Scrum).

What we offer in return?

  • A collaborative and fast paced work environment
  • Health care cash plan
  • Yearly bonus scheme
  • 24 days annual leave plus Bank Holidays and the ability to buy additional leave (annual leave also increases with service)
  • Life Assurance 4x annual salary
  • Vibrant, modern offices

About the business:

Markerstudy is a leading provider of private insurance in the UK, insuring around 5% of the private cars on the UK roads, 20% of commercial vehicles and over 30% of motorcycles in total premium levels of circa £1.2b. Markerstudy also has a large and growing direct presence in the market as well.

Having acquired and successfully integrated Co-op Insurance Services in 2021, BGLi in 2022 & Atlanta in 2024. Markerstudy are now pursuing innovative pricing techniques, taking advantage of an award-winning insurer hosted rating platform, whilst challenging existing embedded processes.

Senior Software Engineer
ATA Recruitment
Not Specified
Fully remote
Senior
£550/day - £650/day

Senior Java Software Engineer (Contractor)

UK-Based Fully Remote

Outside IR35

Contract to Dec 2026

We are supporting a global engineering and technology organisation in the search for a Senior Java Software Engineer (Contractor) to join their Performance Engineering & Research team.

This is a fully remote opportunity (UK-based candidates only) working on robust, scalable software that supports sophisticated control algorithms and performance optimisation systems.

The Role

You will design, build and maintain efficient, high-performance Java applications, contributing across the full software development lifecycle including:

  • Requirements analysis and system design
  • Development and implementation
  • Testing and deployment
  • CI/CD and automation improvements
  • Technical documentation

Working under the guidance of the Principal Performance Engineer, you will collaborate with solution design, integration, simulation and delivery teams globally.

What We re Looking For

  • Minimum 5 years professional Java development experience
  • Strong understanding of OOP, design patterns and software architecture principles
  • Proven experience delivering scalable, maintainable systems
  • Experience with version control (Git) and CI/CD tools (e.g., Jenkins)
  • Exposure to containerisation and logging technologies (e.g., Docker, ELK)
  • Strong analytical and problem-solving capability
  • Excellent communication skills

Nice to have: Experience within logistics, WMS or warehouse automation however strong Java developers from any industry will be considered.

Contract Details

  • Fully remote (UK-based candidates only)
  • Outside IR35
  • Contract funded through December 2026
  • Full-time engagement
  • ASAP start
  • No predefined rate band quality is prioritised

ATA is committed to creating a diverse workforce and is an equal opportunities employer. We welcome applications from all suitably qualified persons regardless of age, disability, gender, marriage and civil partnership, pregnancy and maternity, race, religion or belief, sex, and sexual orientation

Senior Java Developers (x2) - Contract Remote-First
Lord Search & Selection
Oxfordshire
Fully remote
Senior
Private salary

We are seeking two experienced Senior Java Developer contractors to join our client’s UK team immediately. Help drive the future of commerce through innovative automated solutions powering next-generation warehouse and supply chain systems.

Role Details

Engagement: Contract (urgent start)

Location: Remote-First / Hybrid (UK-based)

What You’ll Do

  • Build and maintain efficient, reliable, and high-performance software in line with team coding standards and best practices.
  • Contribute to the design of software components and systems to ensure solutions are robust, scalable, and maintainable.
  • Participate across the full software development lifecycle: requirement analysis, design, coding, testing, deployment, and support.
  • Champion software best practices, coding standards, and continuous integration/delivery across project work.
  • Develop and maintain test automation frameworks, CI/CD pipelines, and technical documentation as needed.
  • Optimise application performance for high-scale warehouse control systems.
  • Mentor junior developers and uphold high engineering quality standards.
  • Collaborate in an Agile environment to solve complex supply chain challenges.

Key Skills & Experience

  • Core Java expertise (5+ years) with strong problem-solving capabilities.
  • Proven track record in software development and implementation.
  • Deep understanding of object-oriented programming, design patterns, and software engineering principles.
  • Strong analytical and problem-solving skills.
  • Familiarity with logistics and operations research concepts is advantageous.
  • Highly reliable, responsible, and effective as part of a collaborative team.
  • Excellent verbal and written communication skills in English.

To apply please submit your full CV quoting reference 10301.

Backend Software Engineer
Sanderson
Hampshire
Remote or hybrid
Mid
£50,000 - £80,000

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

Key Responsibilities

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

Reasonable Adjustments:

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

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

Java Software Engineer
Sanderson
London
Remote or hybrid
Mid - Senior
Private salary
+7

Java Developer - multiple roles

£510/day Inside IR-35

6 month contract

Active SC required

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

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

What you’ll do

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

Essential experience

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

Desirable experience

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

Reasonable Adjustments:

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

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

.NET Developer - Brighouse
Noir
Yorkshire
Remote or hybrid
Junior - Mid
£35,000 - £50,000
+4

.NET Developer - Software House - Brighouse, West Yorkshire (Tech stack: .NET Developer, .NET 10.0, ASP.NET Core, C# 14, Azure, Angular 21, Vue.js, TypeScript, Multithreading, RESTful, ASP.NET Core Web API, EF Core 10.0, Programmer, Full Stack Engineer, Architect, .NET Developer) Do you want to work for an internationally recognised brand? Do you want to work on enterprise level .NET / C# software development projects and gain exposure to cutting edge technologies? Do you want to experience a truly sophisticated Agile development environment? Then look no further! Our client is an award winning software house with a strong presence in over 30 countries. Due to continued growth and expansion we are seeking several .NET / C# Developer to join their dynamic team of high flying individuals. .NET Developer applicants should be experienced in: .NET, .NET Core, C# and Azure SQL. Our client can provide training into: .NET 10.0, C# 14, Azure, Angular 21, Vue.js, TypeScript, Multithreading, RESTful, ASP.NET Core Web API, EF Core 10.0 and Azure Cosmos DB. You will be working alongside an MVP and well respect author on Agile and .NET / C# development. This is a truly fabulous opportunity to join a spectacular organization; one that offers a structured career progression programme, excellent training, exquisite offices and amazing benefits. Location: Brighouse, Calderdale, West Yorkshire, UK / Remote Working Salary: £35,000 - £50,000 + Bonus + Pension + Benefits Applicants must be based in the UK and have the right to work in the UK even though remote working is available. Noir continues to be the leading Microsoft recruitment agency; we can help you make the right career decisions! NOIRUKNETRECNOIRUKREC NC/RC/BRIET

Remote Power Apps Developer
Ashdown Group
Multiple locations
Fully remote
Junior
£27,000 - £29,000
TECH-AGNOSTIC ROLE

Power Platform Developer (Remote)

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

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

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

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

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

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

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

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

Database Administrator
Logistex
Kettering
Remote or hybrid
Mid - Senior
Private salary
TECH-AGNOSTIC ROLE

Are you experienced in Postgres or Oracle databases? Do you enjoy solving complex technical problems and ensuring systems run smoothly? If so, you could be our next Database Administrator!

What is in it for you?

  • Become a member of an Employee-owned trust
  • Performance bonus
  • Cycle to work scheme
  • Option to buy additional leave
  • Private medical insurance

What will you be doing?

  • Manage, maintain and optimize Postgres and Oracle databases
  • Perform upgrades, patches, backups and recovery testing
  • Monitor performance and troubleshoot issues proactively
  • Ensure database security, compliance and documentation
  • Support CI/CD, DevOps and cross-functional teams

What are we looking for?

  • Proven experience as a DBA or similar role
  • Strong knowledge of Postgres and Oracle
  • Experience with performance tuning and troubleshooting
  • Understanding of database security best practices
  • Ability to work independently and within a team

Make you application today! We will be in touch for chat.

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

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.
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.

Python Developer
Ascendion
Glasgow
Remote or hybrid
Mid - Senior
Private salary

Job description:

  • We are looking for an experienced Python Backend Developer with strong cloud expertise and hands-on experience building or supporting enterprise-grade platforms.
  • This role is ideal for someone who has worked on complex, high-performance systems such as trading platforms, financial systems, or other large-scale enterprise applications.

Key Responsibilities

  • Design, develop, and maintain scalable backend services using Python
  • Build and enhance REST APIs and microservices
  • Work on high-throughput, low-latency systems
  • Deploy and manage applications on AWS cloud infrastructure
  • Collaborate with cross-functional teams including DevOps and architecture
  • Optimize performance, scalability, and system reliability
  • Work with SQL/NoSQL databases and large datasets

Required Skills & Experience:

  • Strong backend development experience with Python
  • Proven experience working on enterprise-grade trading platforms OR complex enterprise systems
  • Hands-on experience with AWS (compute, storage, networking, security)
  • Experience building high-performance, scalable systems
  • Strong knowledge of REST APIs, microservices, and distributed systems
  • Experience with SQL and/or NoSQL databases
  • Familiarity with data querying tools such as Athena
  • Understanding of CI/CD pipelines and DevOps practices
  • Experience with Docker/Kubernetes is a plus
Frequently asked questions
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Most remote Backend Engineer jobs on Haystack are open to candidates worldwide, but some employers may prefer or require specific time zone availability to align with their team or business hours. Job listings will specify any such requirements.
Highlight your backend development skills, experience with relevant technologies (e.g., Node.js, Python, Java, databases), and remote work experience. Also, emphasize communication skills and ability to collaborate effectively in distributed teams.
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