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171 software engineer jobs found

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United Kingdom software engineer
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Contract Spy
Mar 18, 2026
Duration not stated
Software engineer (JAVA , Python , Golang) at Test Yantra Software Solutions Private Limited, London, £350-£370 per day
£350 - £370 per day
Contract Spy London, UK
We are urgently looking for experienced candidates with strong hands-on Java development skills and design experience. While an architect title is not mandatory, we are particularly interested in profiles of senior developers with solid technical expertise. Required Core Skills: - Java - Python - GoLang -Design, develop, and maintain high-quality Java applications. -Write clean, efficient, and well-documented code. -Perform code reviews and optimize existing codebases. -Ensure application performance and reliability. -Develop and maintain automated tests to ensure code quality. -Work with CI/CD pipelines to streamline the development and deployment process. Job Types: Full-time, Freelance Pay: £350.00-£370.00 per day Schedule: Monday to Friday Experience: Java: 7 years (required) Python: 3 years (required) Go: 2 years (required)
Contract Spy
Mar 17, 2026
Duration not stated
Senior Embedded Software Engineer at General Dynamics, Hastings, £Contractor Rate (Outside IR35)
Contract Spy Hastings, UK
Senior Embedded Software Engineer (Contractor) Employment Type: Contract (Ltd) Company Description General Dynamics Mission Systems engineers a diverse portfolio of high technology solutions, products and services that enable customers to successfully execute missions across all domains of operation. With a global team of more than 13,000 top professionals, we partner with the best in industry to expand the bounds of innovation in the defence and scientific arenas. In the UK, we are leading the way in avionics and communication systems. Given the nature of our work and who we are, we value trust, honesty, alignment and transparency. General Dynamics in St Leonards-on-Sea currently provide avionic mission computing systems for a wide range of military fast jets, helicopters, and UAV’s. Recent success has resulted in General Dynamics developing the next generation of Advanced High Performance, Safety Critical Mission Computer Systems to meet...
Contract Spy
Mar 17, 2026
up to 6 Months
Senior Software Engineer at Red Badger, London, 3 Months initial, £Contract Rate
Contract Spy London, UK
Joining a new project Ideally have worked on Financial Services Projects before (Payments would be great) Emphasis on Architecture over Development (Must have a solid Development Background) Must be comfortable sitting in client meetings and advising Start date ASAP Duration 3 months (Likely to extend) 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 ʺtech cityʺ...
Contract Spy
Mar 11, 2026
Duration not stated
Software engineer (JAVA , Python , Golang) at Test Yantra Software Solutions Private Limited, London, £350-£370 per day
£350 - £370 per day
Contract Spy London, UK
We are urgently looking for experienced candidates with strong hands-on Java development skills and design experience. While an architect title is not mandatory, we are particularly interested in profiles of senior developers with solid technical expertise. Required Core Skills: - Java - Python - GoLang -Design, develop, and maintain high-quality Java applications. -Write clean, efficient, and well-documented code. -Perform code reviews and optimize existing codebases. -Ensure application performance and reliability. -Develop and maintain automated tests to ensure code quality. -Work with CI/CD pipelines to streamline the development and deployment process. Job Types: Full-time, Freelance Pay: £350.00-£370.00 per day Schedule: Monday to Friday Experience: Java: 7 years (required) Python: 3 years (required) Go: 2 years (required)
Contract Spy
Mar 11, 2026
Duration not stated
Software Engineer Analyst - AI Trainer at DataAnnotation, Edinburgh, From £30.26 an hour
Contract Spy Edinburgh, UK
Join the DataAnnotation team and contribute to developing cutting-edge AI systems, while enjoying the flexibility of remote work and setting your own schedule. We are looking for a proficient Software Engineer Analyst to help advance AI development. As a member of DataAnnotation’s coding team, you’ll be part of a growing community of over 100,000 professionals — including front-end, back-end, full-stack, machine learning, and other engineers — who are driving real-world impact in AI development. Our platform offers an engaging blend of flexibility and challenge: you’ll work closely with state-of the art AI models to take on programming tasks that include creating and solving challenging coding problems, building beautiful apps with rich functionality, and synthesizing insights through data analysis and visualization. Your work directly contributes to refining intelligent systems that learn, adapt, and evolve. Some team members fit this work alongside a full-time role,...
Contract Spy
Mar 10, 2026
Duration not stated
Senior Software Engineer at Red Badger, London, £Day Rate Outside IR35
Contract Spy London, UK
Joining a new project Ideally have worked on Financial Services Projects before (Payments would be great) Emphasis on Architecture over Development (Must have a solid Development Background) Must be comfortable sitting in client meetings and advising Start date ASAP Duration 3 months (Likely to extend) 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...
Contract Spy
Mar 06, 2026
Duration not stated
Senior Software Engineer at Medtronic, London, 6 Months, £Contract Rate
Contract Spy London, England, United Kingdom
At Medtronic you can begin a life-long career of exploration and innovation, while helping champion healthcare access and equity for all. You’ll lead with purpose, breaking down barriers to innovation in a more connected, compassionate world. A Day in the Life Medtronic Digital Technologies is creating ambitious new products that bring connectivity, real-time guidance, and decision support to the operating room. To support this mission, we are developing compact, high-performance, embedded systems that enable edge computing and connectivity. Working closely with other teams across Medtronic, we are creating a connected ecosystem and leveraging the state of the art in computer vision to provide the most comprehensive view of surgery. If you’re interested in using cutting-edge technology to improve the standard of care in surgery on a global scale, this could be the place for you. As a Senior Software Engineer, you’ll be performing development, primarily in...
Contract Spy
Mar 03, 2026
up to 6 Months
Senior Software Engineer at Red Badger, London/Remote, 3 Months+, £Day Rate (Outside IR35)
Contract Spy Hybrid (London, UK)
Joining a new project Ideally have worked on Financial Services Projects before (Payments would be great) Emphasis on Architecture over Development (Must have a solid Development Background) Must be comfortable sitting in client meetings and advising Start date ASAP Duration 3 months (Likely to extend) 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 ʺtech cityʺ...
Contract Spy
Mar 02, 2026
6 Months or more
Software Engineer at Sperry Marine, New Malden, 9-12 Months, £Contract Rate
Contract Spy New Malden, England, United Kingdom
Role Overview Sperry Marine delivers safe, efficient, and reliable navigation solutions to the global commercial and defence maritime sectors. Our Engineering Team operates across two key development centres - New Malden in the UK and Hamburg in Germany - collaborating closely to develop and maintain Sperry Marine’s diverse product portfolio and support an ambitious future roadmap. Our success is founded on technical excellence, global reach, a committed workforce, a focus on sustainability, and a continuous drive for innovation. We are seeking a Software Engineer to join our Engineering Department in New Malden on a 9–12 month contract. This role is ideal for someone who thrives in collaborative, cross-functional environments and combines technical expertise with strong problem-solving, communication, and teamwork skills. Key Responsibilities: Contribute to full life-cycle software development Diagnose and resolve software issues experienced in...
Contract Spy
Feb 27, 2026
6 Months or more
Senior Software Engineer at TXODDS, Remote, 12 Months, £Contractor Rate
Contract Spy Remote (Hoxton Square, London N1 6NT, UK)
Senior Software Engineer Europe (Remote) Full‑time contractor role (rolling 12‑month contract).   About TxODDS TXODDS is a premier provider of ultra low-latency, accurate odds data, fast scores, and innovative betting solutions for the global sports betting industry. With offices in London, Chicago, and Belgrade - and team members working worldwide - we deliver cutting-edge technology and data products that power some of the world’s top sportsbooks.   About the Role We’re looking for a Senior Software Engineer to join our Data Acquisition team. This is a key role in building and maintaining the systems that power our real‑time data delivery. You’ll work closely with cross‑functional teams to ensure the accuracy, reliability, and speed of the data we provide to customers. This is a great opportunity for someone with 5+ years of experience who enjoys working in a fast‑moving, highly collaborative engineering...
Contract Spy
Feb 26, 2026
6 Months or more
Lead Software Engineer (Java, AWS) at The Very Group, Speke/Remote, 6 Months initial, £Contract Rate
Contract Spy Hybrid (Speke, Liverpool, UK)
Role Purpose We are looking for a Lead Software Engineer for an initial 6 Month Contract (Inside IR35) - this role will be onsite 2 days a week in our Speke HQ working in our FS squads. The Lead Engineer is a key role within a Software or Data Engineering sub-community providing technical leadership and guidance to Engineers across all squads working with them to deliver and maintain production ready, secure, stable, and performant code in line with TVG Engineering standards in a DevSecOps manner. They lead by example and play an active part of software design, coding, reviews, testing, and debugging. They are at the forefront of solving challenging technical problems, and are responsible for software engineering excellence, innovation, and continuous improvement within the sub-community across all squads they work with. Scope of Role Leadership: Technical mentor and coach to Software/Data Engineers empowering them to excel in their roles and grow their...
Contract Spy
Feb 27, 2026
Duration not stated
Senior Software Engineer at Code Wizards Group, United Kingdom, £Contract Rate
Contract Spy United Kingdom
Code Wizards Group is one of the world's leaders in Game and Esports Tech. We're in a period of growth and looking to bolster our software engineering capabilities. We are on the lookout for additional experienced Unreal Engine Programmers to join our team on a freelance/contract basis. This role is all about multiplayer, networking, and crossplay, the backbone of truly connected games. It offers the chance to make an impact on exciting cross-platform projects. You will need to have extensive experience on AAA Projects in the Online Services space, including a proven background with the likes of: Core Multiplayer & Anti-cheat Host migration Disconnects / Reconnections Public & Private Lobbies Leaderboards & Randking DUTIES AND RESPONSIBILITIES - Build and optimise backend multiplayer systems in Unreal Engine. - Deliver crossplay functionality across multiple platforms. - Work on both client-side and server-side features. - Collaborate...
Contract Spy
Mar 16, 2026
Duration not stated
Golang - Software Engineer at Test Yantra Software Solutions Private Limited, Sheffield, £400-£500 per day
£400 - £500 per day
Contract Spy Sheffield, UK
Key Accountabilities Responsibilities will include: · Design, develop and maintain highly available, secure, and performant backend REST API services along with frontend client using Python , Golang, Docker and Cloud-Native services . · Implement and manage database schema changes using Liquibase , ensuring alignment with compliance and audit standards. · Collaborate closely with Architecture and DevOps teams to enhance, maintain and mature Product capabilities/features. · Perform root cause analysis and implement solutions for incidents and performance bottlenecks. Qualifications and experience The ideal candidate for this role will have the below experience and qualifications: · Bachelor’s or Master’s degree in Computer Science or equivalent industry experience. · Comes from Software Engineering background with infrastructure experience. · 5+ years of development experience...
Contract Spy
Mar 06, 2026
Duration not stated
Software Engineer (UK) at Turing, Remote, £Contract Rate
Contract Spy Remote (United Kingdom)
About Us: Based in San Francisco, California, Turing is the world’s leading research accelerator for frontier AI labs and a trusted partner for global enterprises deploying advanced AI systems.   Turing supports customers in two ways: first, by accelerating frontier research with high-quality data, advanced training pipelines, plus top AI researchers who specialize in software engineering, logical reasoning, STEM, multilinguality, multimodality, and agents; and second, by applying that expertise to help enterprises transform AI from proof of concept into proprietary intelligence with systems that perform reliably, deliver measurable impact, and drive lasting results on the P&L.   Project Overview: As a Software Engineering evaluator, you will create cutting-edge datasets for training, benchmarking, and advancing large language models, collaborating closely with researchers. This includes curating code examples, providing precise...
Contract Spy
Mar 02, 2026
Duration not stated
Golang - Software Engineer at Test Yantra Software Solutions Private Limited, Sheffield, £400-£500 per day
£400 - £500 per day
Contract Spy Sheffield, UK
Key Accountabilities Responsibilities will include: · Design, develop and maintain highly available, secure, and performant backend REST API services along with frontend client using Python , Golang, Docker and Cloud-Native services . · Implement and manage database schema changes using Liquibase , ensuring alignment with compliance and audit standards. · Collaborate closely with Architecture and DevOps teams to enhance, maintain and mature Product capabilities/features. · Perform root cause analysis and implement solutions for incidents and performance bottlenecks. Qualifications and experience The ideal candidate for this role will have the below experience and qualifications: · Bachelor’s or Master’s degree in Computer Science or equivalent industry experience. · Comes from Software Engineering background with infrastructure experience. · 5+ years of development experience...
Contract Spy
Mar 16, 2026
Duration not stated
Full Stack Python & React Engineer at Test Yantra Software Solutions, Sheffield, £500 per day
£500 per day
Contract Spy Sheffield, UK
Role Overview We are seeking a skilled Full-Stack Software Engineer with exclusive expertise in React for frontend development and Python for backend development. The role focuses on building scalable, secure, and high performance web applications while working closely with product, design, and platform teams. Key Responsibilities Frontend (React) Design and develop responsive, modular, and accessible user interfaces using React Build reusable React components, shared libraries, and frontend design systems Manage complex client side state and optimize frontend performance Integrate frontend applications with REST APIs Ensure high standards of UX, accessibility, and cross browser compatibility Backend (Python) Design and implement scalable backend services using Python Develop RESTful APIs using Python frameworks such as Django / FastAPI / Flask Handle authentication, authorization, and secure data...
Contract Spy
Mar 16, 2026
Hourly/Freelance
UAV Software Integration Engineer at Bullshark Aero Ltd., Remote, 12 Weeks initial, to £40 per hour
Contract Spy Remote (Waterlooville PO8 0BT, UK)
UAV - Software Integration Engineer. Remote (UK Work Eligibility Required) Occasional travel in England for flight tests and hardware integration. Contract: Initially ~12 weeks (extension likely) Rate: £25-£40 per hour, depending on experience. Time: Flexible/part-time OK (deliverables matter more than hours) ✈ What you’ll do. We’re looking for a software engineer to support the development of a large (>25kg) unmanned aircraft. You will mostly be working around ArduPilot and Mission Planner. This is an MVP-style role: build, test, iterate, and keep things moving with minimal meetings. You’ll start with smaller, well-defined tasks while you ramp up, then take on more complex integrations with more independence as you understand the project’s architecture. ✈ Typical tasks. Depending on your strengths, you’ll get to work on some of the following: - Extend Mission Planner - Added...
Contract Spy
Mar 09, 2026
Duration not stated
UAV Software Integration Engineer. at Bullshark Aero Ltd., Waterlooville PO8 0BT, £35,000 - £80,000 a year
Contract Spy Waterlooville PO8 0BT, UK
UAV - Software Integration Engineer. Remote (UK Work Eligibility Required) Occasional travel in England for flight tests and hardware integration. Contract: Initially ~12 weeks (extension likely) Rate: £25-£40 per hour, depending on experience. Time: Flexible/part-time OK (deliverables matter more than hours) ✈ What you’ll do. We’re looking for a software engineer to support the development of a large (>25kg) unmanned aircraft. You will mostly be working around ArduPilot and Mission Planner. This is an MVP-style role: build, test, iterate, and keep things moving with minimal meetings. You’ll start with smaller, well-defined tasks while you ramp up, then take on more complex integrations with more independence as you understand the project’s architecture. ✈ Typical tasks. Depending on your strengths, you’ll get to work on some of the following: - Extend Mission Planner - Added functionalities for operator workflows....
Contract Spy
Mar 03, 2026
up to 6 Months
UAV Software Integration Engineer at Bullshark Aero Ltd., Remote, 12 Weeks initial, to £40 per hour
Contract Spy Remote (Waterlooville PO8 0BT, UK)
UAV - Software Integration Engineer. Remote (UK Work Eligibility Required) Occasional travel in England for flight tests and hardware integration. Contract: Initially ~12 weeks (extension likely) Rate: £25-£40 per hour, depending on experience. Time: Flexible/part-time OK (deliverables matter more than hours) ✈ What you’ll do. We’re looking for a software engineer to support the development of a large (>25kg) unmanned aircraft. You will mostly be working around ArduPilot and Mission Planner. This is an MVP-style role: build, test, iterate, and keep things moving with minimal meetings. You’ll start with smaller, well-defined tasks while you ramp up, then take on more complex integrations with more independence as you understand the project’s architecture. ✈ Typical tasks. Depending on your strengths, you’ll get to work on some of the following: - Extend Mission Planner - Added...
Contract Spy
Mar 02, 2026
Hourly/Freelance
UAV Software Integration Engineer. at Bullshark Aero Ltd., Remote, 12 Weeks initial, to £40 per hour
Contract Spy Remote (Waterlooville PO8 0BT, UK)
UAV - Software Integration Engineer. Remote (UK Work Eligibility Required) Occasional travel in England for flight tests and hardware integration. Contract: Initially ~12 weeks (extension likely) Rate: £25-£40 per hour, depending on experience. Time: Flexible/part-time OK (deliverables matter more than hours) ✈ What you’ll do. We’re looking for a software engineer to support the development of a large (>25kg) unmanned aircraft. You will mostly be working around ArduPilot and Mission Planner. This is an MVP-style role: build, test, iterate, and keep things moving with minimal meetings. You’ll start with smaller, well-defined tasks while you ramp up, then take on more complex integrations with more independence as you understand the project’s architecture. ✈ Typical tasks. Depending on your strengths, you’ll get to work on some of the following: - Extend Mission Planner - Added...
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