27 senior software engineer jobs found

Software Engineer (Golang) - Contract - ASAP start 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...

Software Engineer (Golang) - Contract - ASAP start 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 - ASAP start 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...

Joining a new project Ideally have worked on Financial Services Projects before (Payments would be great) Fullstack Experience Tech Stack - Kotlin Backend, JS/TS React Frontend Start date ASAP Duration 6 months (Likely to extend) 2/3 days / week in person working (London) Immediate Interviews The best bit about Red Badger is, of course, the team. We are really proud of our people; we support and learn a lot from each other; we work really hard but have fun doing it. We are a diverse group made up of 22 different nationalities, speaking 17 different languages. Our 3 founders, Dave, Cain and Stu, who have considerable tech and consultancy experience and still own 100% of the company. We've been consistently profitable and have grown responsibly from the beginning. We are based at Old Street in the heart of "tech city" and get thoroughly stuck in with the brilliant community around us. We run several meetups including the hugely popular React...

Lead Backend Software Engineer – Data Services Federated Data Services | Distributed Systems | Apache Spark | DataFusion | Python | Kubernetes Location: London (2 days per week onsite) Rate: £700–£800 per day (Outside IR35) Duration: Initial 6-month contract with likely extension Overview We're looking for an experienced Lead Backend Software Engineer to join a high-profile programme building secure, cloud-native data services that will support data-driven research and innovation at national scale. This is a founding engineering role, offering the opportunity to shape the architecture, engineering standards, and core data services from the ground up. Working closely with the Engineering Manager and a small team of senior engineers, you'll establish the technical foundations for a complex federated data platform operating within a highly regulated environment. We're looking for someone who enjoys building from first principles, thrives in ambiguity, and can balance strategic...

Senior Software Engineer - Outside IR35 - Contract (Energy Client) About the role Softwire is looking for an experienced Software Engineer to join a team delivering the first phase of a major replatforming project. You will work in a collaborative, technically focused environment, helping to modernise a data platform that currently relies on Power Automate, Power BI, and Python scripts. You can work remotely from anywhere in the UK, as client site visits aren't mandatory. Phase one of the project will introduce a SQL database and Azure Function Apps, alongside a migration of data from SharePoint into the new database. This is a hands-on engineering role with real impact from day one. Key Responsibilities Design and build Azure Function Apps to support the replatforming initiative. Develop and maintain SQL database schemas, queries, and data pipelines. Contribute to the migration of data from SharePoint into the new database. Work with existing Power...

Senior Software Engineer x2 - Outside IR35 - Contract (Media Client) About the role Essential: Self-starter, someone who can pick up context quickly, drive outcomes efficiently, and to a high quality Competent in doing high-level designs, solution management, and scoping Understanding of data modelling best practices Ability to translate technical solutions to non-technical stakeholders and bring them on the journey Experience working in an agile delivery environment Experience working with React, TypeScript, Azure, Microsoft SQL, and Databricks (if they don’t have all of these, that’s workable, but be good to understand any they don’t have experience with) Skills & Experience: Backend: Java, Maven, Dropwizard Frontend: TypeScript, React Python AWS, OpenSearch It would be nice if you have AI coding experience, and ideally some familiarity with more traditional ML techniques for things like entity recognition £500-600 per day...

Senior Software Engineer - Outside IR35 - Contract (Insurance) About the role Essential: Self-starter, someone who can pick up context quickly, drive outcomes efficiently, and to a high quality Competent in doing high-level designs, solution management, and scoping Understanding of data modelling best practices Ability to translate technical solutions to non-technical stakeholders and bring them on the journey Experience working in an agile delivery environment Experience working with React, TypeScript, Azure, Microsoft SQL, and Databricks (if they don’t have all of these, that’s workable, but be good to understand any they don’t have experience with) Frontend: React + TypeScript + Vite Material UI with Emotion for styling TanStack React Query 5 for server state React Router 7 React Hook Form+Yup for forms/validation MSAL for Entra ID auth Jest+Testing Library for unit tests; Playwrightfor E2E and visual tests Hosted as an Azure Static...

Lead Backend Software Engineer - Data Services Federated Data Services | Distributed Systems | Apache Spark | DataFusion | Python | Kubernetes Location: London (2 days per week onsite) Rate: £700-£800 per day (Outside IR35) Duration: Initial 6-month contract with likely extension Overview We're looking for an experienced Lead Backend Software Engineer to join a high-profile programme building secure, cloud-native data services that will support data-driven research and innovation at national scale. This is a founding engineering role, offering the opportunity to shape the architecture, engineering standards, and core data services from the ground up. Working closely with the Engineering Manager and a small team of senior engineers, you'll establish the technical foundations for a complex federated data platform operating within a highly regulated environment. We're looking for someone who enjoys building from first principles, thrives in ambiguity, and can balance...

Lead Backend Software Engineer - Data Services Federated Data Services | Distributed Systems | Apache Spark | DataFusion | Python | Kubernetes Location: London (2 days per week onsite) Rate: £700 - £800 per day (Outside IR35) Duration: Initial 6-month contract with likely extension Overview We 're looking for an experienced Lead Backend Software Engineer to join a high-profile programme building secure, cloud-native data services that will support data-driven research and innovation at national scale. This is a founding engineering role, offering the opportunity to shape the architecture, engineering standards, and core data services from the ground up. Working closely with the Engineering Manager and a small team of senior engineers, you 'll establish the technical foundations for a complex federated data platform operating within a highly regulated environment. We 're looking for someone who enjoys building from first principles, thrives in...

Senior Data Engineer - Outside IR35 - Contract (Insurance Client) About the role Softwire is seeking an experienced Data Engineer with a strong knowledge of Python (including PySpark) and SQL, and a good understanding of software engineering best practices (including SDLC, CI/CD, automated testing, DevOps) to join an established small team working on delivering a data & analytics platform in Microsoft Fabric for a speciality insurance provider. This is a senior, hands-on role that will require owning and delivering workstreams independently while supporting a junior team member. Key Responsibilities Building new ingestion pipelines in Microsoft Fabric using Python (PySpark) notebooks Modelling data for consumption in Power BI through a dimensional gold warehouse layer and a semantic model Improving platform performance Working across cross-functional areas such as logging, monitoring (with Azure Log Analytics and Fabric) and data governance (within...

Job Title: Senior QA Tester (SC Cleared) Location: Leeds/Hybrid (1x day per week) Day rate: Competitive rate - Outside IR35 Duration: 3 months - Strong chance of extension Why Apply? This is a great opportunity for a quality-focused, SC cleared, Senior QA Tester to play a key role in delivering high-quality software and systems for a growing organisation. You'll start with manual testing and have genuine scope to expand into automation, CI/CD integration, and accessibility testing, helping to shape and mature the wider quality function as it develops. If you're curious, confident challenging assumptions, and passionate about raising testing standards, this contract role in Leeds offers real influence over how quality is delivered. Non-negotiables MUST have active SC clearance or higher Proactive by nature Test Engineer Responsibilities Design, execute, and maintain manual test cases and scripts from requirements, user stories, and acceptance criteria Conduct...

Job Title: Senior QA Tester (SC Cleared) Location: Leeds/Hybrid (1x day per week) Day rate: Competitive rate - Outside IR35 Duration: 3 months - Strong chance of extension Why Apply? This is a great opportunity for a quality-focused, SC cleared, Senior QA Tester to play a key role in delivering high-quality software and systems for a growing organisation. You'll start with manual testing and have genuine scope to expand into automation, CI/CD integration, and accessibility testing, helping to shape and mature the wider quality function as it develops. If you're curious, confident challenging assumptions, and passionate about raising testing standards, this contract role in Leeds offers real influence over how quality is delivered. Non-negotiables MUST have active SC clearance or higher Proactive by nature Test Engineer Responsibilities Design, execute, and maintain manual test cases and scripts from requirements, user stories, and acceptance criteria Conduct...

3 months Outside IR35, Fully Remote bedigital have partnered with fast-growing UK technology business developing cutting-edge AI and cloud platforms that support government, defence and critical national infrastructure. We're looking for an experienced Senior Platform Engineer to join a highly capable engineering team responsible for building secure, scalable and resilient cloud infrastructure that underpins a mission-critical software platform. The Role As a Senior Platform Engineer, you'll work closely with software engineers, architects and product teams to build, automate and maintain the core platform that enables rapid, secure software delivery. Key responsibilities include: Designing, building and maintaining secure cloud infrastructure. Developing Infrastructure as Code to automate platform provisioning. Building and maintaining modern CI/CD pipelines. Managing containerised applications and orchestration platforms. Developing automation tools...

Senior Python Backend Engineer - AI Agents / FastAPI / FastMCP Fully Remote (UK based only), Contract Outside IR35 Build the infrastructure powering the next generation of AI agents. We're partnering with an innovative client at the forefront of agentic AI, developing the platform that enables organisations to build, orchestrate and deploy their own AI agents. Rather than creating a single AI application, you'll be building the backend systems, APIs and tooling that allow developers to create intelligent, production-ready agentic workflows at scale. This is an opportunity to work on genuinely cutting-edge technology alongside experienced engineers solving complex problems in AI infrastructure What you'll be doing Designing and building scalable backend services in Python. Developing high-performance APIs using FastAPI. Building and maintaining MCP (Model Context Protocol) servers using FastMCP Integrating LLMs with external tools, APIs and business...

Go/Rust Backend Engineers Outside IR35 | Fully Remote (UK based) | £300-£400/day | Long-Term Contract I'm working on a brand-new opportunity for multiple Back End engineers to join a large-scale platform transformation programme. This is a chance to work on modern, cloud-native software alongside a highly experienced engineering team that embraces AI-assisted software development as part of its day-to-day workflow. We're looking for engineers with commercial experience in either Go or Rust. You don't need to be an expert in both languages. If you're a strong Go engineer who's happy picking up Rust, or a Rust engineer interested in working with Go, we'd love to hear from you. The team is focused on hiring good software engineers who enjoy solving complex technical problems and are comfortable using AI as part of their development workflow. Tech Stack Go and/or Rust Backend APIs & Microservices Cloud-native development SQL & NoSQL databases AI-assisted...

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...

Senior Data Engineer - Security Cleared. Azure, DevOps, Outside IR35 Exciting initial 6-month contract opportunity available for a security-cleared Data Engineer with expertise in Python/Scale and traditional programming languages - specifically Go programming and Java language skills. Suited Data Engineers will understand secure software development principles and have strong automation, DevOps, Kubernetes, and Azure Cloud experience. Our client is building a scalable data infrastructure to make critical national infrastructure systems robust, secure, and fit for purpose. The ideal candidate will have recently been working on another secure project and will have good GO programming knowledge. Active SC Clearance with DV eligibility is required. Active DV Clearance is extremely advantageous. Minorities, women, LGBTQ+ candidates, and individuals with disabilities are encouraged to apply. Interviews will take place next week, so please apply immediately or call...

Internal Title: Senior Full Stack Developer Location: London, UK (Hybrid - typically 1-2 days per month in office) Contract: Permanent, Full-time OR Outside IR35 Contract, 6 months with view to extend Day Rate (contract): £500-550 per day Package (perm): £70,000 - £80,000 + 10% Bonus + 10% Shares + Benefits (see more below) About Appvia Appvia is a specialist cloud, platform, and solutions engineering consultancy, helping organisations modernise software systems, improve developer productivity, and adopt cloud-native practices that enable long-term, sustainable delivery. Our software engineering capability focuses on modern application development, domain-driven design, and improving delivery outcomes through better architecture, testing, and developer experience. We work across complex, high-impact environments in both the public and private sector, delivering solutions where quality, scalability, and reliability are critical. About The Role We're hiring...

Principal Software Test Engineer 12 months contract Hybrid working Hampshire County £400/day Outside IR35 Seeking an experienced Principal Software Test Engineer to join a long-term programme focused on the development of advanced software solutions on Embedded Linux platforms. This is an excellent opportunity for a senior-level test professional with extensive experience in automated testing, technical leadership, and quality assurance within Agile environments. The role offers a long-term contract engagement with strong potential for extension. Key Responsibilities: - Lead the design, development, and execution of automated test solutions using Python, Squish, and other appropriate technologies. - Provide technical leadership and mentoring to test engineers, promoting testing best practices, coding standards, and continuous improvement. - Drive test estimation, planning, and delivery activities across complex software projects. - Support...