Freelance Software Engineer jobs in Slough

You will own the implementation of end-to-end ingestion and validation flows, spanning frontend state management, backend APIs, and data models.

You will work directly with the founders to convert non-deterministic inputs into deterministic system behaviour and ship code that is reliable in production.

Job Description Do you want to be a founding engineer building production AI agents that handle real customer conversations? Have you ever owned a system end-to-end, from backend design to live deployment? Are you ready to help scale an AI product already live with real users in healthcare? A high-growth, pre-seed AI startup in healthcare is hiring a Founding Senior Software AI Engineer to...

You will be involved in: - Developing software for cyber security systems; - Developing novel signal, image, or data processing applications; - Developing solutions in C/C++, HTML, Typescript/Javascript, Python, and Rust; - Providing support and training to our customers in using the software.

Job Description Top global trading firm looking for a DeFi developer to join a small, highly technical trading team building high-performance systems that operate directly on decentralized markets. The role is hands-on and focused on building production systems in Rust and Python, covering execution, on-chain integrations, and performance-critical components where latency and reliability are...

Job Description At Ripple, we’re building a world where value moves like information does today. It’s big, it’s bold, and we’re already doing it. Through our crypto solutions for financial institutions, businesses, governments and developers, we are improving the global financial system and creating greater economic fairness and opportunity for more people, in more places around the world. And...

Job Description All3 is transforming how buildings are conceived, developed, and delivered. We combine AI-powered design with robotic prefabrication and on-site assembly to build custom architecture at the cost and speed of mass production — unlocking even the most complex sites. We’re currently seeking a Robotics Software Engineer to build the control software for electro-mechanical systems,...

You will work as part of a collaborative R&D team focused on delivering high-quality features, and developing the client architecture using the latest UI patterns.

Job Description Travel & Aviation Technology - C++ - Flight Management Systems A global leader in travel and aviation technology is seeking a skilled C++ Engineer to join their Flight Management System (FMS) engineering team in London. This group builds mission-critical software used by airlines worldwide - powering real-time flight operations, route optimisation, and next-generation cockpit...

Job Description Lead Software Engineer | Distributed Systems | Sustainable Cloud Native Platform 💸Up to £130,000 per annum plus bonus plus stock 🏠Central London office 🖱️Golang, Rust, C, Kubernetes, Linux, Cloud Native, Distributed systems... Are you a Lead Software Engineer with extensive knowledge of building distributed systems? Looking to join a company who are solving genuine problems...

Job Description Senior Software Engineer | Hybrid | London We are hiring for an innovative analytics software company powering global credit investment is expanding its engineering team and looking for a Senior Software Engineer to help shape its next generation of data products. This is a unique opportunity to influence the technical roadmap at a high-growth fintech scale-up working with...

Job Description Senior Software Engineer - AI Infrastructure We’re working with a hyper growth company. They are building the GPU infrastructure to the best ai labs and the biggest enterprise companies. They are building the solution that allows researches to focus on their models, while utilising the phenomenal scale and reliability of the world best ai cloud platform. The engineering team...

Job Description Role: Software Engineer - Conversational AI (Python) Location: London - Hybrid Compensation: £150,000 - £300,00 We’re working with a AI company delivering AI voice agents to major brands. We need engineers who can move quickly, own production systems, and partner with customers to deliver measurable improvements. Key requirements - 2+ years industry experience; Python...

Job Description Job title: Frontend Software Engineer (5+ Years) Client: Elite FinTech Firm Salary: Up to £200k + Bonus Location: London (Hybrid Working) Sells: Cutting-edge tech, ownership of multiple greenfield projects, no red tape, gold medal Olympiads, exceptional technologists, option to research and develop your own models, a friendly/collaborative environment, beautiful offices. An...

Job Description About the Team Dex is an AI-powered recruiter, matching exceptional software engineers with top tech companies. We're one of the fastest-growing UK startups, and have raised $3.1M from a16z and Concept Ventures to build a best-in-class voice agent, matching engine and web app experience that will redefine the way that talent and opportunity connect. We're hiring a Python...

Job Description Job Role: Lead Software Engineer, React Native Job Type: Full Time, Permanent Location: London, Hybrid (3 office days a week) Role purpose As a valued member of our engineering team, you will contribute to the development of our innovative application using React Native. Working with a modern JavaScript stack, your primary focus will be on coding, testing, and enhancing the...

Job Description See here for more info: https://sanctuaryhealth.notion.site/We-re-hiring-at-Sanctuary-de00a6bec35b4b128f4e61f583c87f2d ⚡ TL;DR Description: We are building the go-to AI services company for healthcare Role: Forward Deployed AI Engineer, who can help us discover, gain clarity and build AI solutions for healthcare clients. We want to answer the question of what patient care...

Job Description As a GPU Software Engineer, you’ll be translating innovative research into high-performance, high-quality GPU compute solutions—playing a key role in delivering next-generation media technology to the market. Hybrid working, 3 days onsite and 2 days working from home. Key Skills & Qualifications: - Degree in Electronics Engineering, Computer Science, or a related field. -...

You will be responsible for building and maintaining business-critical systems, developing automation for deployment, monitoring, and incident response, and collaborating closely with developers, researchers, traders, and platform teams to improve reliability, performance, and scalability across the platform.

Job Description Title: Software Engineer in Test Company: Specialist Technology / eCommerce Platform Location: London – 2-3 days a week Salary: up to £60,000 + benefits Tech essentials: Javascript and either Cypress or Playwright Interview process: 3 stage interview process Why should you be interested in this opportunity? - You’ll be part of a dynamic multi-disciplinary team, taking...

Job Description Role: Rust Distributed Systems Software Engineer - Up to £200k + Bonus Salary: Up to £200k + Bonus Location: London (Hybrid) Skills: Language agnostic, just need to be a keen technologist (Ideally experienced in Rust, Python or C++) This firm is an elite company with high tech standards who have previously set tech world records. They are made up of some exceptionally...