41 senior software engineer jobs found

Contract role: Senior Software Engineer: Up to £475 per day Outside IR35: 6 months rolling: Hybrid Monthly (London) An innovative digital consultancy is looking for experienced Senior Software Engineers to design and architect scalable, high-performance systems for a cutting-edge platform being developed for a major client. In this role, you'll tackle complex technical challenges as part of an agile team following Scrum methodologies. As a Senior Software Engineer, you'll set the standard for code quality and best practices, actively contributing to code reviews and collaborative programming sessions with your team. As a Senior Software Engineer, you will be experienced with: C#, .Netcore JavaScript, React.js AWS or Azure Key information: Up to £475 per day Outside IR35 6 months rolling Hybrid Monthly (London) This is an exciting opportunity for a Senior Software Engineer to join a high-performing development team. Contract role: Senior Software...

Contract role : Senior Software Engineer : Up to £475 per day Outside IR35 : 3 months rolling : Hybrid Monthly (London) An innovative digital consultancy is looking for experienced Senior Software Engineers to design and architect scalable, high-performance systems for a cutting-edge platform being developed for a major client. In this role, you’ll tackle complex technical challenges as part of an agile team following Scrum methodologies. As a Senior Software Engineer, you’ll set the standard for code quality and best practices, actively contributing to code reviews and collaborative programming sessions with your team. As a Senior Software Engineer, you will be experienced with: C#, .Netcore JavaScript, React.js AWS Key information: Up to £475 per day Outside IR35 3 months rolling Hybrid Monthly (London) This is an exciting opportunity for a Senior Software Engineer to join a high-performing development team. Contract role :...

Contract Senior Embedded Software Engineer Rate: up to £60pphr + VAT, outside IR35 Location: East Sussex (Hybrid: 2 days onsite, 3 days remote) Our client, a well-established and financially secure engineering organisation, is seeking a Senior Embedded Software Engineer to join their expanding development team. This is a fantastic opportunity to work within a company recognised for its long-term stability, strong engineering ethos, and continued investment in innovation. You’ll be part of a collaborative, multi-disciplinary team, playing a key role in developing embedded software for advanced electronic systems. The position offers involvement across the full software development lifecycle—from initial requirements through to validation and release. The Role As a Senior Embedded Software Engineer, you will design, develop, and support embedded software for controller systems, instrumentation, and user interfaces. You’ll contribute to both new product development and...

Contract Senior Embedded Software Engineer Rate: up to £60pphr + VAT, outside IR35 Location:  East Sussex (Hybrid: 2 days onsite, 3 days remote) Our client, a well-established and financially secure engineering organisation, is seeking a  Senior Embedded Software Engineer  to join their expanding development team. This is a fantastic opportunity to work within a company recognised for its long-term stability, strong engineering ethos, and continued investment in innovation. You’ll be part of a collaborative, multi-disciplinary team, playing a key role in developing embedded software for advanced electronic systems. The position offers involvement across the full software development lifecycle—from initial requirements through to validation and release. The Role As a Senior Embedded Software Engineer, you will design, develop, and support embedded software for controller systems, instrumentation, and user interfaces. You’ll contribute to both new product development and...

Senior Software Engineer - Outside IR35 - Contract - Current SC Essential We're hiring a Senior Software Engineer to join a high-impact government programme of work. This is an outside IR35 contract with a strong potential for extension beyond the initial 6-month term, making it a great opportunity for experienced contractors looking for stability and interesting work. The project sits within a complex, delivery-focused environment where your engineering decisions will genuinely matter. You'll be working as part of a collaborative team building robust, scalable solutions for a public sector client. Tech Experience: Java, Spring Boot, Typescript and React. £550 per day outside IR35 Start date: 28/04/2026 End date: 30/10/2026 About Softwire Softwire is a leading UK technology and strategy consultancy. From enterprise to government, we help visionary organisations turn strategic ambitions into results at scale. Our practices cover AI...

Full job description Contract Senior Embedded Software Engineer Rate: up to £60pphr + VAT, outside IR35 Location:  East Sussex (Hybrid: 2 days onsite, 3 days remote) Our client, a well-established and financially secure engineering organisation, is seeking a  Senior Embedded Software Engineer  to join their expanding development team. This is a fantastic opportunity to work within a company recognised for its long-term stability, strong engineering ethos, and continued investment in innovation. You’ll be part of a collaborative, multi-disciplinary team, playing a key role in developing embedded software for advanced electronic systems. The position offers involvement across the full software development lifecycle—from initial requirements through to validation and release. The Role As a Senior Embedded Software Engineer, you will design, develop, and support embedded software for controller systems, instrumentation, and user...

Contract Software / Golang Engineers - (Outside IR35) Role : Software Engineer (Golang / AI-enabled engineering) Day Rate : £450 a day (maybe some wiggle room for the right person) Duration : Initial 6 months IR35 : Outside IR35 Location : Fully remote (UK-based) We are currently partnering with a growing technology consultancy that is supporting a well-known UK brand on a large-scale engineering transformation programme. As part of this engagement, they are looking to bring in a number of high-calibre contract software engineers to play a key role in delivering meaningful change across their engineering function. This is a high-impact opportunity to work on a complex transformation, combining modern backend engineering (Golang) with the adoption of AI-enabled development practices . The Role You will be embedded within a team that requires support transitioning from legacy practices and low delivery velocity into a more modern,...

Job Title: Senior Software Developer Location: Remote (South Coast England) Estimated Duration: 6 months Weekly hours : 40 hours Engagement Type: Outside IR35-Limited contract Rate: £500 - £600 per day Our Client is an Energy technology company are seeking to recruit Senior Software Developer and this is a Remote role. The role is for a contract position of 6 months Outside IR35. Our client has 150-year legacy of innovation and will focus on energy transformation, new technologies, decarbonization and Innovative leading-edge technology. Role: Role Overview This is a 6 month contractor assignment for an experienced Senior Software Developer with a strong focus on business analysis and pre-development solution shaping within a finance environment. The role is designed to provide short-term, high-impact support to Finance and Digital teams by ensuring business needs are clearly understood, analysed and translated into actionable requirements before...

Immediate Contract Opportunity - Senior Embedded Software Engineer (Outside IR35) Are you an experienced Embedded Software Engineer who thrives on bringing products across the finish line? I'm working with an innovative engineering client who needs a hands-on expert to step in and help deliver 2 -3 near-complete products into production . This is a high-impact role where your work will directly shape final delivery. Fast-Track Hiring Process CV review: 09/04/26 (4:30 PM) Interviews: 13/04 Start date: 20/04 What You'll Be Doing Taking ownership of temperature controller products in late-stage development Delivering high-quality Embedded C code on PIC microcontrollers Ensuring systems are robust, fully tested, and production-ready Working with schematics & digital-to-analog conversion Collaborating closely with hardware teams using KiCad Location : Hybrid (50% remote / 50%...

Senior Software Developer / Data Engineer - (Contract Outside IR35) In brief We’re looking for well-rounded software developers with experience in data engineering, with a proven ability to tackle complex data challenges, make an excellent impression on clients, and have a high impact on the output of your entire team. We provide a supportive environment with a strong focus on individual career progression, where you will have both the mentorship and project opportunities you need to develop your technical skills. You’ll work in a team alongside other talented developers and data engineers, supported by a Technical Lead. Projects span a range of sizes and multiple sectors and technologies. The role Experience and qualifications You have 4+ years’ experience and a breadth & depth of technical knowledge & expertise, particularly in data engineering, and can solve technical challenges across front-end, back-end, and infrastructure. You have...

Senior C# Developer - Commodities Trading - Outside IR35 Exciting opportunity for an experienced senior developer to build on their experience in Commodities or similar trading development role in this successful Commodities Trading company. £750 - 800 per day Outside IR35 The Senior C# Developer will have significant prior experience as a Senior Software Engineer/Senior Developer working as C# Developer in a Commodities trading environment where they will have gained knowledge of the full trade life cycle and feel comfortable speaking directly to traders and senior stakeholders in the business as well as senior technical colleagues such as architects. Central London location, with Hybrid working expected. Very strong core skills in C# are expected Good knowledge of Commodities Trading is also required. Please apply now if your curious to learn more, for a confidential discussion about the role and company Guidant, Carbon60, Lorien & SRG - The Impellam Group...

Senior C# Developer - Commodities Trading - Outside IR35 Exciting opportunity for an experienced senior developer to build on their experience in Commodities or similar trading development role in this successful Commodities Trading company. £750 - 800 per day Outside IR35 The Senior C# Developer will have significant prior experience as a Senior Software Engineer / Senior Developer working as C# Developer in a Commodities trading environment where they will have gained knowledge of the full trade life-cycle and feel comfortable speaking directly to traders and senior stakeholders in the business as well as senior technical colleagues such as architects. Central London location, with Hybrid working expected. Very strong core skills in C# are expected Good knowledge of Commodities Trading is also required. Please apply now if your curious to learn more, for a confidential discussion about the role and company Guidant, Carbon60,...

Senior Software Engineer (Frontend-Leaning) – React / TypeScript / .NET Remote / Hybrid (UK & Ireland) Contract - Outside IR35 £400-430 p/d A fast-growing healthcare technology company is building an AI-driven compliance and patient safety platform used by healthcare organisations across Ireland, the UK, and Australia. We’re at a key growth stage. The product is live, scaling fast, and we’re expanding the engineering team to build new modules from scratch. This is not a maintenance role or a legacy rebuild – it’s an opportunity to shape and deliver new product in a modern SaaS environment. The Role We’re looking for frontend-leaning engineers who enjoy building high-quality user interfaces but are also comfortable working across the full stack when needed. You’ll work alongside experienced principal engineers to design and deliver features end-to-end, with a strong focus on frontend development within a modern SaaS platform. Initial focus areas...

Contract Description Senior Software Engineer – Java (Contractor) Outside IR35 Rate: £400 - £500 per day Duration: 3 Months Plus Start Date: ASAP As a Senior Software Engineer (Java) – Contractor at Pulselive, you’ll be focused on delivering robust, high-performance backend services and APIs that power digital experiences for millions of sports fans globally. This role is ideal for an experienced, hands-on engineer with strong Java and Spring expertise who thrives in a collaborative and fast-paced delivery environment. You’ll work closely with cross-functional teams to build, integrate, and optimize systems that handle real-time sports data, video, and live commentary. This position is project- and delivery-focused, with no line management or people-leadership responsibilities required. Key Responsibilities: Design and develop scalable backend systems using Java and Spring Boot Deliver well-structured, maintainable, and testable code aligned with...

Azure Senior DevOps Engineer, 6 month initial, contract, outside IR35, 3 days of remote / week Attractive opportunity for a well-rounded Azure DevOps Engineer to join a London based scale-up that is a major international player in AI and whose innovation you will surely be benefiting from very soon! Do you want to secure a disruptive project? If you accept, your mission will be to take part in securing and managing an immense quantity of data in order to develop a solution that will revolutionize the daily lives of millions of people. Main tasks: assist the engineering team to build, test and ship software for all cloud platforms and infrastructure build and run secure and highly reliable cloud environments specific to Azure improve infrastructure as code, scale and reduce errors, move from dev to production environments safely and securely, automate environments, observing and monitoring health of systems, logg metrics and alerts use containerisation,...

Senior Backend Engineer, Go (Contract) | C# to Go Large-Scale Migration, AWS, SQL, Distributed Systems | £400-450/day | Outside IR35 | Fully Remote (UK) | 6-Month Contract We’re hiring multiple Senior Go Backend Engineers (contractors) to join a large-scale public sector transformation programme delivered by a highly regarded product consultancy. This work is focused on moving critical systems away from a legacy C# ecosystem into a modern, scalable, cloud-native architecture. You’ll be joining cross-functional teams responsible for building resilient backend services that support high-impact, user-facing products used at national scale. This is a 6-month initial contract, ideal for engineers who enjoy working on meaningful systems, solving complex migration challenges, and delivering production-grade backend services, fast. The Role | Senior Backend Engineer, Go (Contract) | C# to Go Large-Scale Migration, AWS, SQL, Distributed Systems | £400-450/day |...

We're recruiting a Senior DevOps Engineer to join a growing technology organisation operating at scale in mission-critical, cloud-first environments. You'll play a key role in designing, automating, and improving Azure-based infrastructure and CI/CD pipelines, enabling engineering teams to deliver reliable, secure, high-performance services. This is a hands-on senior role focused on automation, cloud optimisation, and proactive operational excellence-not fire-fighting. What you'll do: Design and run Azure cloud infrastructure at scale Build and standardise CI/CD pipelines and IaC Support containerised platforms (Docker, Kubernetes/AKS) Improve monitoring, security, reliability, and cost efficiency Partner closely with software engineering and QA teams What we're looking for: Strong Azure DevOps/cloud engineering experience CI/CD, IaC, and containerisation expertise Passion for automation, reliability, and best practice In terms of the softer...

Join a leading Insuretech company where you'll drive engineering excellence while leading high-performing teams in a collaborative, innovation-focused environment. Salary: £700 - 750 per day Engineering Manager (C#) - £700-750 per day – London (.NET, C#, SQL, Azure, Kubernetes, Docker, CI/CD Pipelines) We're working with a leading Insuretech company that are looking for an Engineering Manager to join them for an initial 6-month contract. This person will be tasked with leading engineering teams by combining strong delivery management with hands-on technical leadership and stakeholder management. This role will fall OUTSIDE IR35 and will require travel to their City of London based office twice per week. Skills & Experience Required Strong background as a senior engineer, architect, or technical lead with demonstrable delivery experience. Ability to apply algorithmic thinking and structured problem solving to real-world engineering challenges. Proven experience...

Senior Backend Engineer, Go (Contract) | C# to Go Large-Scale Migration, AWS, SQL, Distributed Systems | £400-450/day | Outside IR35 | Fully Remote (UK) | 6-Month Contract We’re hiring multiple Senior Go Backend Engineers (contractors) to join a large-scale public sector transformation programme delivered by a highly regarded product consultancy. This work is focused on moving critical systems away from a legacy C# ecosystem into a modern, scalable, cloud-native architecture. You’ll be joining cross-functional teams responsible for building resilient backend services that support high-impact, user-facing products used at national scale. This is a 6-month initial contract, ideal for engineers who enjoy working on meaningful systems, solving complex migration challenges, and delivering production-grade backend services, fast. The Role | Senior Backend Engineer, Go (Contract) | C# to Go Large-Scale Migration, AWS, SQL, Distributed Systems | £400-450/day |...

Full job description Join a leading Insuretech company where you'll drive engineering excellence while leading high-performing teams in a collaborative, innovation-focused environment. Salary:  £700 - 750 per day Engineering Manager (C#) - £700-750 per day – London (.NET, C#, SQL, Azure, Kubernetes, Docker, CI/CD Pipelines) We're working with a leading Insuretech company that are looking for an Engineering Manager to join them for an initial 6-month contract. This person will be tasked with leading engineering teams by combining strong delivery management with hands-on technical leadership and stakeholder management. This role will fall OUTSIDE IR35 and will require travel to their City of London based office twice per week. Skills & Experience Required Strong background as a senior engineer, architect, or technical lead with demonstrable delivery experience. Ability to apply algorithmic thinking and structured...