1 to 25 of 34 Contract Senior Developer Jobs in the UK

Senior Go Developer 6 Months Contract London Hybrid or Fully Remote An exciting opportunity for a highly skilled Senior Go Developer to join a leading technology business on a contract basis. This organisation is recognised for its engineering excellence and is seeking a Senior Go Developer to help scale distributed systems and deliver high … performance solutions. In this role, the Senior Go Developer will design, develop, and implement data-intensive applications across the full engineering lifecycle. You'll architect and deliver microservices-based systems using Go (Golang), AWS, Kubernetes, Docker, and Kafka, working closely with cross-functional teams to build scalable, reliable, and resilient platforms. You'll also play a key role … in optimising system performance, improving reliability, and ensuring scalability, while contributing to code reviews, design discussions, and knowledge sharing across the engineering function. Senior Go Developer - Key Requirements: Strong commercial experience in backend development Advanced skills in Go (Golang), with proven expertise in AWS, Kubernetes, and Docker End-to-end software engineering experience, including system design and architecture More ❯

Senior Go Developer London, UK 6 Month Contract An incredible opportunity for an experienced Senior Go Developer with strong backend engineering skills to join a prestigious tech client on a contract basis. Known for its high bar for engineering quality, this isn't your typical banking or fintech gig - contractors here are genuinely embedded, involved, and … making meaningful impact from day one. As a Senior Go Developer, you'll play a key role in building mission-critical, data-driven services that power core parts of the platform. You'll take ownership across the full development lifecycle, from system design and implementation to optimisation and release. You'll be working in an open, fast-moving … to shape how things are built and the trust to get on with it - whether that's improving infrastructure, shipping new features, or quietly refactoring something that needs it. Senior Go Developer - Key Requirements: Significant professional experience in software development, with a strong focus on backend systems Proficiency in Go/Golang and proven expertise in AWS, Kubernetes More ❯

Senior Java Developer Inside IR35 - 3 days onsite Our banking client is seeking an experienced Senior Java Developer to join their dynamic technology team. This role offers the opportunity to work on high-impact financial applications, driving innovation and excellence in software development within a fast-paced and regulated environment. As a Senior Java Developer … Knowledge of NoSQL databases (e.g., MongoDB). Experience with message queues (Kafka, Solace). Front-end development exposure (React, Angular, Vue.js). Experience building CI/CD pipelines . Senior Java Developer Due to the volume of applications received for positions, it will not be possible to respond to all applications and only applicants who are considered suitable More ❯

Senior Developer/Technical Lead - UKIC DV - Contract Rate : £650 to £700 per day Location : London Duration : 12 months (extendable) IR35 : Inside The role :A leading Government client is seeking to appoint a Senior Developer/Tech Lead, to provide Technical Leadership and set the technical direction, for highly motivated and talented development teams.The Role would … mentor development teams. Infrastructure as Code Cloud technologies (either AWS, GCP, Azure) Expertise in translating user requirements into technical requirements. Excellent interpersonal skills and able to communicate with Clients, Senior Management and software engineers Experience of using Kubernetes and/or OpenShift as a deployment platform and day-to-day development environment. Understanding of and experience with Modern DevOps More ❯

Job summary NHS England is seeking experienced Senior Developers to join product teams across various areas of the organisation to play a key part in the delivery of critical services that have a national impact. As a Senior Developer you will work on systems that improve healthcare for millions of people across the UK. These systems range … and also by many of our partners' apps and services. The main technologies we use in these teams are AWS and Python. Main duties of the job As a Senior Developer you will: Develop software components across the front-end, back-end, and persistence layers Utilise appropriate design patterns to solve complex problems Implement robust development techniques such More ❯

Job Title: Senior Developer Location: Osterley, UK (Hybrid) Duration: 6 months-Extendable Job Description: Architect, develop, and maintain scalable TypeScript/Node.js services and GraphQL APIs. Write resilient, maintainable code with a strong focus on automated testing (unit, integration, functional, end-to-end, visual regression, Lighthouse). Collaborate on DevOps practices: CI/CD (Jenkins, Concourse ), containerisation, Helm More ❯

Senior Platform Software Developer | 3-Month Contract (Possible Extension) | £550-£650p/day | Fully Remote | GCP, Docker, Kubernetes | Start: Immediately The Opportunity My client is seeking a senior-level software developer to design and build core services for their cloud-native platform. This role is critical to improving scalability, performance, and reliability across distributed systems, while … Pub/Sub, Kafka) Clear communicator & proven technical leader If you think that this is the role for you, then APPLY NOW and I shall give you a call! Senior Platform Software Developer | 3-Month Contract (Possible Extension) | £550-£650p/day | Fully Remote | GCP, Docker, Kubernetes | Start: Immediately Oscar Associates (UK) Limited is acting as an Employment More ❯

D365 Senior Developer - D365 Finance, APIS, Azure Up to £515 per day (Inside IR35) Remote/must be UK based 12 months We're looking for an experienced D365 Finance & Operations Developer to lead the development of custom journal processing extensions. This role suits someone with strong X++ skills and a deep understanding of D365 Finance, especially More ❯

D365 Senior Developer - D365 Finance, APIS, Azure Up to £515 per day (Inside IR35) Remote/must be UK based 12 months We're looking for an experienced D365 Finance & Operations Developer to lead the development of custom journal processing extensions. This role suits someone with strong X++ skills and a deep understanding of D365 Finance, especially More ❯

Senior/Lead Java Developer £(Apply online only) per day Outside IR35 Fully Remote (Must be UK based) Initially 6 Months (Project scope for 12-24 Months) Start ASAP! Unify are proudly, exclusively representing a highly respected digital transformation partner, as they embark on another exciting, high profile program of works. We are looking for 2 Senior or Lead Java Developers to join the team on a long term contract basis. ***The ideal Senior/Lead Java Developer will have proven experience of working on long term Government, defense or public sector projects, with a team playing, consultative approach, with excellent communications and customer facing skills*** We need: Strong experience in Java Development Experience More ❯

Senior/Lead Software Developer Full Stack - Kotlin - TypeScript £(Apply online only) per day, Outside IR35 3 Month rolling (long term) Fully Remote SC Clearance REQUIRED Unify are proud to exclusively represent a highly respected Consultancy who urgently require the services of a Senior/Lead Full Stack Developer, on a contract basis, 3 months rolling More ❯

Senior Software Developer - React/TypeScript/Node.js (Contract, SC Cleared) Day Rate: Up to £600 - £800 per day (Outside IR35) Location: Fully onsite, 5 days/week (secure client site) Clearance: Active SC clearance required About the Role: Methods Business & Digital Technology are looking for a Senior Software Developer with strong experience in modern JavaScript More ❯

Senior Marketing Cloud Developer | £400 | Outside IR35 | 12 Months | Hybrid Remote We’re recruiting a Senior Salesforce Marketing Cloud Expert to support our client on a long-term contract basis. The 12 month contract is determined as Outside IR35 and offers a daily rate of circa £400 per day. This role requires hybrid work in Greater Manchester … platforms such as Google Analytics Confident in technical and non-technical stakeholder engagement Ability to mentor and train junior members of the team What to do next If this Senior Marketing Cloud Developer role sounds like a good fit, please apply with your most up-to-date CV and I’ll be in touch. Senior Marketing Cloud … Developer | £400 | Outside IR35 | 12 Months | Hybrid Remote More ❯

Senior Full stack Developer .NET/Angular Contract 6-12 Months. My client a leading global name is in urgent need of a talented and experienced Senior Full stack Developer to join them on a contract basis. You will be responsible for the front-end build quality of responsive web sites using HTML, CSS, Sitefinity and More ❯

Senior Full stack Developer .NET/Angular Contract 6-12 Months. My client a leading global name is in urgent need of a talented and experienced Senior Full stack Developer to join them on a contract basis. You will be responsible for the front-end build quality of responsive web sites using HTML, CSS, Sitefinity and More ❯

Senior Backend Engineer - Python Outside IR35 Hybrid - Oxford or London | Contract Our client, a UK-based deep tech start-up, is seeking an experienced Senior Backend Engineer (Python & Django or Flask) to own and operate mission-critical backend services powering generative AI products. You'll architect, build, and run scalable APIs and data services end-to-end, collaborating More ❯

I am currently working with a London-based financial services client who are actively seeking a Senior Java Developer to aid in the development of a business-critical application. What you'll need to succeed Extensive development experience with Java 17+ within financial services - mandatory. Expertise in distributed programming with distributed cache/data grids. Strong cloud experience More ❯

We are working with a global financial institution to recruit a Senior Services Developer to join a newly formed product team within the Codified Controls group, part of the Developer Engineering function in the CTO organisation. This team is leading a company-wide "everything-as-code" initiative, transforming how policies, standards, and controls are managed. The role … that enhance user experience and business outcomes. Manage stakeholder relationships and ensure user needs are prioritised throughout the development process. Essential Criteria Proven experience as a Service Designer/Developer, with a track record of driving business outcomes through innovative service solutions. Strong expertise in journey mapping and service blueprinting, especially in complex or ambiguous environments. Proficient in Figma … for prototyping and workshop facilitation. Excellent stakeholder management and communication skills, able to engage technical and senior audiences. Self-starter with a growth mindset, able to work independently and within cross-functional teams. Passionate about inclusive design and creating services based on real user needs. Experience navigating large organisations and leveraging internal/external resources effectively. This role will More ❯

PHP Architect/Lead Developer Location: 100% Remote Contract: 6-month contract (potential extension) Start Date: ASAP About the Role We're seeking an experienced PHP Architect/Lead Developer to join our agile, forward-thinking technology team. Our in-house platforms power everything from industry-leading e-learning solutions to highly integrated office logistics, all hosted on … and craft raw SQL queries for performance. Translate complex business requirements into scalable, maintainable technical solutions. Build and maintain client and management reporting tools. Contribute to the evolution of developer tools, CI/CD pipelines, and AWS-based architectures. Mentor and provide technical guidance to less experienced developers. Support a global user base and ensure high-quality, well-documented … Apply Ready to shape the future of our platforms? Send your CV and a short cover letter highlighting relevant experience to with the subject line "PHP Architect/Lead Developer - Contract". Randstad Technologies is acting as an Employment Business in relation to this vacancy. More ❯

PHP Architect/Lead Developer Location: 100% Remote Contract: 6-month contract (potential extension) Start Date: ASAP About the Role We're seeking an experienced PHP Architect/Lead Developer to join our agile, forward-thinking technology team. Our in-house platforms power everything from industry-leading e-learning solutions to highly integrated office logistics, all hosted on … and craft raw SQL queries for performance. Translate complex business requirements into scalable, maintainable technical solutions. Build and maintain client and management reporting tools. Contribute to the evolution of developer tools, CI/CD pipelines, and AWS-based architectures. Mentor and provide technical guidance to less experienced developers. Support a global user base and ensure high-quality, well-documented … to shape the future of our platforms? Send your CV and a short cover letter highlighting relevant experience to (url removed) with the subject line "PHP Architect/Lead Developer - Contract". Randstad Technologies is acting as an Employment Business in relation to this vacancy. More ❯

Lead Java Developer Rate: Up to £700/day Inside IR35 Location: Leeds - 3 Days Onsite Per Week Contract: 12 Months About the Role We're looking for a Lead Java Developer to join a major national digital transformation programme. The successful candidate will help build and improve high-traffic citizen-facing services used by millions across the More ❯

This a new fully remote 6 month contract (outside of IR35) for a seasoned .Net Core Developer to work with a business who have a leading SAAS platform. In your new contract you will supporting the business as they continue to scale rapidly and your work will see you redeveloping features to future proof their platform and, where necessary More ❯

Akkodis is partnering with a client in the UK. Take a look at their latest opportunity! Job: KDB Developer Location: Hybrid 3/2 days a week in London , the rest WFH Duration: 6 months rolling contract INSIDE IR35 Summary Looking for a Senior KDB developer to join the FI Algo trading IT team in London. Mission … position is essentially a technical lead role within the KDB area but will not involve line management. Individual will need to act as an SME for the other, less senior developers in the team to come to with queries in addition to focusing on their own tasks. Strong prior experience within KDB Prior experience of KDB within a financial More ❯

Hello {firstName}, My client within Financial Services is looking for a Senior C#.Net Developer to join their team. The role will be working on strategic transformation of a legacy system built on PHP and Oracle, migrating to a modern architecture using PostgreSQL and .NET (C#). Requirements 5+ years of experience in .NET/C# development , with a More ❯

Hello {firstName}, My client within Financial Services is looking for a Senior C#.Net Developer to join their team. The role will be working on strategic transformation of a legacy system built on PHP and Oracle, migrating to a modern architecture using PostgreSQL and .NET (C#). Requirements 5+ years of experience in .NET/C# development , with a More ❯