44 senior software engineer jobs found

Senior Software Engineer - Geospatial Data (Contract) Location: Farnborough (3 days per week onsite) Contract Length: Initial 3-month contract IR35 Status: Outside IR35 Security Clearance: All candidates must be eligible for security clearance prior to appointment. We are seeking an experienced Senior Software Engineer with strong geospatial data experience to join a high-performing engineering team delivering advanced data-driven and navigation-focused solutions within a complex operational environment. This role is suited to a hands-on software engineer with experience designing and developing scalable applications and services that work with geospatial datasets, spatial databases, and mapping technologies. Experience within the maritime domain and optimisation-based problem solving would be highly beneficial. Key Responsibilities Design, develop, and maintain scalable software applications and services Work with large-scale geospatial and spatial datasets...

Senior Software Engineer (Kotlin, Java, SpringBoot, AWS) | SC Cleared - Outside IR35 Circa £550 per day | Outside IR35 Fully Remote 3-Month Initial Contract (Strong Extension Potential) Immediate Start / ASAP We're supporting a fast-growing technology consultancy that delivers large-scale digital transformation programmes across both public and private sector organisations. They're looking for a Senior Software Engineer with a strong backend lean, to join a high-performing engineering team working on a transformation project. Essential Skills Active Security Clearance (SC) Kotlin Java Spring Boot AWS Terraform Thymeleaf Strong experience building scalable backend services and APIs The role offers the chance to work alongside experienced engineers in a collaborative environment, helping deliver modern cloud-native solutions whilst contributing to technical direction and engineering best practice. Please apply for immediate...

Senior Software Engineer - Geospatial Data (Contract) Location: Farnborough (3 days per week onsite) Contract Length: Initial 3-month contract IR35 Status: Outside IR35 Security Clearance: All candidates must be eligible for security clearance prior to appointment click apply for full job details

Senior Software Engineer - Devon Senior Software Engineer - Devon - Outside IR35 - Our client is looking for an experienced Senior Software Developer for a short-term consultancy role with strong Angular and Authentication Specialisation (MSAL). The role will involve the final implementation of the project, including documentation and Automation Flow. If you have the following, please forward your CV:- Angular MSAL - SSO Azure AD Authentication knowledge Strong Development and Implementation knowledge 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 for interview will be contacted. Proactive Appointments Limited operates as an employment agency and employment business and is an equal opportunities organisation We take our obligations to protect your personal data very seriously. Any information provided to us will be processed as detailed in our Privacy...

TrueNorth is working with a successful Tech company, and we're looking for a Senior Software Engineer who will lead development on complex web applications. Key skills: Java Spring Boot AWS React Mentor and support team members at all levels Collaborate with stakeholders This role will not just be about creating dashboards but more about driving the business on what they are building and what direction they should go in with the upcoming CRM/ERP migrations and the new build of a cloud-based platform. The roles are outside IR35 and have a rate of £550-600 per day. Given the urgency of the roles and projects, we do need everyone to be available either immediately or with circa 1 weeks notice. Please apply for more info and immediate consideration.

Senior Software Engineer - APIs & Integration (Azure & Kafka) Contract Length: 6 months Initial Rate: £500-£525 per day Location: Remote IR35: Outside We're supporting a major cloud transformation programme and are looking for an experienced API Architect to help modernise a critical enterprise platform. This role is focused on transforming a large API estate, migrating services from on-premise infrastructure into Azure, and evolving a monolithic architecture into a modern, scalable, event-driven ecosystem. This is a hands-on architecture role where you'll work closely with engineering teams to define architectural standards, guide implementation, and support the delivery of a long-term modernisation strategy. The Opportunity You'll play a key role in: Leading the migration of business-critical APIs from on-premise environments into Azure Defining and driving API architecture across a complex technology landscape Decomposing a large API monolith into...

Software Engineer (Golang) - Contract 6 months initial | Outside IR35 | Remote (occasional travel to Manchester / London) | BPSS required Client: Pixel Global (DWP) We're looking for a Golang Software Engineer to drive automation and process optimisation across a major government programme What you'll be doing: Building in Golang, creating frameworks to enable scalable automation Working with stakeholders to pilot and embed repeatable automated processes Shaping automation approaches aligned to defined standards (TS Red Lines) Challenging manual processes and identifying where automation adds real value What we need: Strong Golang development experience Experience building automation frameworks or tooling Confident engaging stakeholders and challenging existing processes Ability to assess automation vs manual trade‑offs This is an immediate impact role with strong extension potential beyond 2026. Please click on the link to apply, for consideration.

Software Engineer (Golang) - Contract 6 months initial | Outside IR35 | Remote (occasional travel to Manchester/London) | BPSS required Client: Pixel Global (DWP) We're looking for a Golang Software Engineer to drive automation and process optimisation across a major government programme What you'll be doing: Building in Golang, creating frameworks to enable scalable automation Working with stakeholders to pilot and embed repeatable automated processes Shaping automation approaches aligned to defined standards (TS Red Lines) Challenging manual processes and identifying where automation adds real value What we need: Strong Golang development experience Experience building automation frameworks or tooling Confident engaging stakeholders and challenging existing processes Ability to assess automation vs manual trade-offs This is an immediate impact role with strong extension potential beyond 2026. Please click on the link to apply, for consideration.

Software Engineer (Golang) - Contract 6 months initial | Outside IR35 | Remote (occasional travel to Manchester / London) | BPSS required Client: Pixel Global (DWP) We 're looking for a Golang Software Engineer to drive automation and process optimisation across a major government programme What you 'll be doing: Building in Golang, creating frameworks to enable scalable automation Working with stakeholders to pilot and embed repeatable automated processes Shaping automation approaches aligned to defined standards (TS Red Lines) Challenging manual processes and identifying where automation adds real value What we need: Strong Golang development experience Experience building automation frameworks or tooling Confident engaging stakeholders and challenging existing processes Ability to assess automation vs manual trade-offs This is an immediate impact role with strong extension potential beyond 2026. Please click on the...

Contract details - Senior Python Engineer Duration -12 month sIR35 status - Outside IR3 5Location - Remote (UK-based )Day rate - £500–£850/day (Depending on level of experience ) The opportuni ty We're working with a world-leading AI research and product organisation - one of the most consequential technology companies operating today. They're scaling their engineering function and looking for Python engineers who have worked at the intersection of software engineering and machine learning to join on an initial 12-month outside IR35 contra ct.This is a high-impact role. You'll be embedded in teams that move fast and care deeply about the quality of what they build, shipping production systems that sit alongside cutting-edge resear ch. What you'll be d oing Designing and building production-grade Python services, APIs, and tooling that support AI/ML research and product teamsTranslating experimental ML code into reliable, scalable systems fit for...

Senior Full Stack Engineer : Up to £500 per day Outside IR35 : Fully Remote : London A growing EdTech company is seeking a Senior Full Stack Engineer to join an ambitious team building a creator-led tutoring platform. They are moving fast and building something genuinely new in education. As a Senior Full Stack Engineer, you will work closely with the engineering team, ship features end-to-end, and see your code reach real users within days. Key Responsibilities as a Senior Full Stack Engineer: Build and ship features across the full stack Design and implement APIs and database schemas for new product features Integrate and optimise video streaming infrastructure Work with AI and ML models to power personalised tutoring features Implement payment flows and subscription management via Stripe Skills & Key Requirements: Strong React and Next.js skills Expertise with AWS Proficiency with Claude Code and agentic development patterns PostgreSQL...

I have partnered with a top-tier business intelligence provider who are looking for a Senior .NET/Angular contractor to help them out over their next few sprints. 💷 Up to £500 per day (Outside IR35) 🏢 once a week in London office (mandatory) 📅 3 initially with possibility of extension 🧐 Focus: working on highly performant web apps ad backend systems as well as integration across multiple services and databases. ⚙️ Skills: Angular, .NET Core 7/8, API development, MongoDB, MySQL, Entity, AWS, Claude & Cursor 👉 Advantageous skills: knowledge of Python/Gen AI application and database deployment ❗ Must have UK right to work and be able to commute to London once a week.

🚀 𝗦𝗲𝗻𝗶𝗼𝗿 𝗔𝗜 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 / 𝗔𝗜 𝗧𝗲𝗰𝗵 𝗟𝗲𝗮𝗱 - 𝗖𝗹𝗮𝘂𝗱𝗲 I𝗺𝗽𝗹𝗲𝗺𝗲𝗻𝘁𝗮𝘁𝗶𝗼𝗻 🚀 📍 London (Hybrid) 📅 Start Date: ASAP ⏳ Initial 3-6 Months (multiple contracts) 💰 Outside IR35 - rate depending on experience I'm working with a consultancy delivering multiple AI engineering engagements for enterprise clients looking to accelerate software delivery through AI-native engineering practices. We're looking for experienced engineers who have worked hands-on with Claude Code and can help engineering teams adopt AI-assisted development at scale. 🔑 The Role 👉 Roll out Claude Code across engineering organisations and delivery teams 👉 Build custom agents and AI-powered workflows to improve software delivery 👉 Embed alongside engineering teams to drive adoption and best practice 👉 Accelerate technical design, code review, testing and SDLC processes 🎯 Requirements 👉 Strong Software Engineering background 👉 Excellent Python experience 👉 Hands-on experience with Claude Code,...

Software Engineer / DevOps Engineer - Contractor Dublin Ideally, or Fully Remote Outside IR35 3 Days per Week 6-Month Contract (rates negotiable) Are you a senior Software Engineer / DevOps Contractor looking for a flexible part-time contract? A major professional services company is looking for an experienced contractor to provide hands-on support across backend development, AWS cloud operations and DevOps automation. If you are based in the Dublin area, that will be helpfully, otherwise the role can be fully remote , and is an outside IR35 contract working 3 days per week . The client can be flexible on which days are worked, and the role is available to start ASAP. You’ll be joining a busy technology environment where you’ll help maintain existing systems, support active project delivery, and provide knowledge transfer to the wider team. The role You will have experience in work across a broad technical stack including: Node.js...

Software Engineer / DevOps Engineer - Contractor Fully Remote Outside IR35 3 Days per Week 6-Month Contract (rates negotiable) Are you a senior Software Engineer / DevOps Contractor looking for a flexible part-time contract? A major professional services company is looking for an experienced contractor to provide hands-on support across backend development, AWS cloud operations and DevOps automation. This is a fully remote , outside IR35 contract working 3 days per week . The client can be flexible on which days are worked, and the role is available to start ASAP. You’ll be joining a busy technology environment where you’ll help maintain existing systems, support active project delivery, and provide knowledge transfer to the wider team. The role You will have experience in work across a broad technical stack including: Node.js (strong experience) Python (Flask / FastAPI) - back end production ready AWS: EC2, RDS, Elastic...

Senior Software Engineer 📍 Leeds (3 Days On-Site) | 💰 £400/day Outside IR35 We're supporting a growing UK business on the search for a Senior Software Engineer to play a key role in the evolution of their bespoke CRM platform. This is an opportunity to join a business at an exciting stage of growth. With ambitious plans to double revenue, expand internationally and pursue acquisitions, technology sits at the heart of the next phase of the journey. Working directly with the Founder and wider business teams, you'll be responsible for developing new CRM functionality, automating manual processes and removing operational bottlenecks that impact the business day-to-day. What You'll Be Doing Developing and extending a bespoke CRM platform built in PHP Working closely with business stakeholders to gather requirements and identify opportunities for improvement Building solutions across areas such as stock management, job scheduling and workflow automation...

🚨 Senior Software Engineer (DevOps) | Contract & Permanent Opportunities 💰 £80K+ Salary or Circa £600/day (Outside IR35) 📍 UK-Based | Fully Remote We're supporting a leading consultancy delivering AI, cloud, and customer experience transformation programmes for enterprise clients. They are looking for a Senior Software Engineer to join their growing AI Practice. This is a hands-on engineering role for someone with a strong DevOps and automation-first mindset, comfortable working across the full software lifecycle—from design and development through to deployment, monitoring, and optimisation. Key experience includes: ✅ AWS (Amazon Connect experience beneficial) ✅ Terraform / Infrastructure as Code ✅ CI/CD pipelines and DevOps tooling ✅ Docker & Kubernetes ✅ C# (.NET 8+) and/or Java (Spring) ✅ React, Angular, or modern JavaScript frameworks ✅ Linux, Bash & PowerShell ✅ Strong troubleshooting and customer-facing delivery experience This is an...

Senior Data & ML Engineer Contract - Outside IR35 - Initial 6 month contract £650-£750 per day London - Hybrid working We are partnering with a rapidly growing financial services business that is investing heavily in its machine learning and data platform capabilities. This is a hands-on engineering role focused on helping Data Science teams build, deploy, and scale machine learning solutions in production. The work sits at the intersection of data engineering, machine learning engineering, and MLOps, with a strong focus on production systems, feature engineering, workflow orchestration, and model lifecycle management. What you'll be doing Design and build scalable data and feature engineering pipelines to support machine learning workloads Work closely with Data Scientists to operationalise models and improve the end-to-end machine learning lifecycle Develop and optimise PySpark-based data processing workflows and training pipelines Build and...

Senior Front End Engineer, React, Next, AWS, based West London, Hybrid working, 2 days week on site. Outside IR35. 6 months initial, likely extensions. The Role Create extremely well-crafted front-end web applications using React.js and NextJS Support and Develop Server Side Rendered web applications, making use of AWS Lambda Write resilient code that will be continuously tested, deployed and performed at scale Test front end application e2e with unit, functional, integration, visual regression and lighthouse testing Cross functional Agile team, building high traffic eCommerce and Service web applications Contribute to technical direction and the improvement of its tools and processes Ensure that the code written is performant, resilient, secure and well monitored and alerted web applications Skills Solid commercial experience in React/Redux development Good understanding of development best practices such as TDD, continuous integration and continuous delivery...

Senior Front End Engineer, React, Next, AWS, based West London, Hybrid working, 2 days week on site. Outside IR35. 6 months initial, likely extensions. The Role Create extremely well-crafted Front End web applications using React.js and NextJS Support and Develop Server Side Rendered web applications, making use of AWS Lambda Write resilient code that will be continuously tested, deployed and performed at scale Test Front End application e2e with unit, functional, integration, visual regression and lighthouse testing Cross functional Agile team, building high traffic eCommerce and Service web applications Contribute to technical direction and the improvement of its tools and processes Ensure that the code written is performant, resilient, secure and well monitored and alerted web applications Skills Solid commercial experience in React/Redux development Good understanding of development best practices such as TDD, continuous integration and continuous...