Freelance Software Engineer jobs in London

We recognise our people are the best thing about Red Badger and that a truly diverse workplace where people are free to be themselves is essential for great culture and great outcomes. If you like solving difficult problems, working with great people and making a real impact, join us and become a Badger. At Red Badger, our purpose is to make a positive impact on the world around us. Our mission...

Job Description We're currently looking for an experienced Palantir Foundry Engineer with strong hands-on Foundry expertise and strong business acumen. You'll build and customize Foundry solutions while translating business needs into scalable, high-impact outcomes for the client. What You'll Do: - Work closely with business and technical stakeholders to understand goals and processes across...

Job Description What you'll do · Design and implement high-quality, reusable, and scalable features in React Native for both SDK and Mobile Application layers. · Help facilitate the complete lifecycle of the mobile application, applying React Native for both iOS and Android platforms · Develop and maintain a React Native-based SDK and Mobile Applications to be used by external teams, with an...

Lead Software Engineer Active SC Clearance Essential Our client, an innovative UK technology company is building a next-generation AI platform fordefence and health applications. Their systems operate in highly regulated, mission-critical environments where reliability, security, and performance truly matter. Were looking for aLead Software Engineerto take technical ownership of key platform...

Job Description Senior Quantity Surveyor - HS2 Civil Engineering / Groundworks (Freelance OUTSIDE IR35) Location: North London HS2 Project (4 days office/site 1 day home) Rate: £450-£550 per day (Outside IR35) Contract: Freelance / Contract Start: ASAP The Role: We are seeking an experienced Quantity Surveyor or Senior Quantity Surveyor to support a major HS2 groundworks package. This is a...

Get AI-powered advice on this job and more exclusive features. Associate Director @ Opus Recruitment Solutions | Shaping the Future of Tech firms (JVM - Java, Scala & Kotlin) Head of Software Engineering | £180k – Java, Machine Learning and Data Driven I am working with an innovative tech firm that is revolutionizing industrial maintenance through data-driven intelligence! Utilizing machine...

Croydon, England, United Kingdom; Manchester, England, United KingdomJanes empowers military, government, and defence leaders to act with confidence in an increasingly complex world. Our trusted defence, security, and geopolitical information delivered through seamless digital platforms and system integrations—turns overwhelming data into clear, actionable intelligence and insight. By filling...

Job Description Control Systems Software Engineer (PLC / SCADA) Location: London (Hybrid)Clearance: SC Cleared To apply, email: or call Overview An opportunity for an experienced Control Systems Software Engineer to work on mission-critical naval platform management systems within a highly regulated defence environment. The role covers full lifecycle development and in-service support of...

Job Description Senior Software Engineer (Robotics) ?? London (On-site, 5 days/week) Permanent role with excellent on-site benefits We're looking for a Senior Software Engineer to help turn our advanced robotics stack into a dependable, real-world product. This is a hands-on role where you'll write production code, integrate subsystems, and work directly with robots in both simulation and...

Join Our Network of Patent Linguists | DE > EN RWS is expanding its network of expert linguists for long-term collaboration on high-impact patent translation projects. We are currently seeking freelance translators and proofreaders to support ongoing work with some of the world’s most innovative technology brands. We are particularly interested in linguists with subject-matter expertise in ...

Cyber Software Vulnerability Engineer Package - £45,000 - £65,000 (depending in experience level) Benefits - DV Bonus plus excellent benefits Clearance - Clearable to eDV level, SC clearance required to start. Location - Hampshire, Surrey or London - hybrid working Join a trusted leader in National Security technology solutions. Do you enjoy solving technical cyber problems and identifying...

Job Description - Senior Recruitment Consultant – MedTech (Permanent / Contract) - Central London / Hybrid - Specialist Recruitment Agency – MedTech & Life Sciences We are working exclusively with a high-growth specialist recruitment consultancy operating across the European MedTech and medical devices market. Due to increased demand, they are now seeking to hire a Senior Recruitment...

Job Description C++ Software Engineering Manager A brand new and exciting opportunity has arisen for a C++ Software Engineering Manager with extensive knowledge of C++ to join a market leading financial services company based from their Old Street, London office. Please note you will be expected to go to the office 4 days per week. The C++ Software Engineering Manager will take lead and mentor...

Senior Quantity Surveyor - HS2 Civil Engineering / Groundworks (Freelance OUTSIDE IR35) Location: North London HS2 Project (4 days office/site 1 day home) Rate: £450-£550 per day (Outside IR35) Contract: Freelance / Contract Start: ASAP The Role: We are seeking an experienced Quantity Surveyor or Senior Quantity Surveyor to support a major HS2 groundworks package . This is a long-term...

C++ Software Engineer / Developer (C++ Mac Extensions API) WFH / London to £80k Are you a C++ Software Engineer with experience of developing and integrating Apple Mac Extensions and APIs? You could be progressing your career at a rapidly expanding scale-up software house that is developing a highly complex network cyber security platform; the platform monitors network protocols in real-time,...

Contract type:Permanent Hours:37.5/ weekSalary:circa £70,000 depending on experienceLocation:London, Canary WharfWFH policy:Employees are required to attend the office 2 days/weekFlexible working: Variety of flexible work patterns subject to line manager discretion e.g. Compressed 9-day fortnight.Reports to:Software Engineering Manager Deadline Note:We reserve the right to close the advert before...

Senior Software Engineer - Hybrid - Salary £70K (DOE) We're currently working with a growing SaaS company based in Oxford that have an exciting job opening for a Senior Software Engineer skilled with C# .NET, Angular, and SQL. You will be guiding architectural decisions, ensuring the development of scalable, maintainable, and high-performance solutions using their core stack (.NET & Angular)....

Job Description What you'll do· Design and implement high-quality, reusable, and scalable features in React Native for both SDK and Mobile Application layers. · Help facilitate the complete lifecycle of the mobile application, applying React Native for both iOS and Android platforms · Develop and maintain a React Native-based SDK and Mobile Applications to be used by external teams, with an...

Backend Software Engineer / Developer (C++ Rust Low Latency Trading) London / WFH to £180k+ Opportunity to join a hugely profitable High Frequency Trading firm that specialise in crypto markets and earning substantial bonuses in a senior, hands-on Backend Software Engineer role, working with Rust. As a Backend Software Engineer you will design and develop high throughput backend services for...

We recognise our people are the best thing about Red Badger and that a truly diverse workplace where people are free to be themselves is essential for great culture and great outcomes. If you like solving difficult problems, working with great people and making a real impact, join us and become a Badger.At Red Badger, our purpose is to make a positive impact on the world around us. Our mission is...