Bytes Software Services Jobs

Senior Full Stack Engineer · PE-backed AI startup · 4 days in Central London · £115,000A general manager opens a coffee shop at 6am. The supplier hasn't delivered. Three of the morning rota have called in sick. The stock count from last night doesn't add up. Nobody has built software for this person.The company is building it. At Pret A Manger alon...

Senior Software Engineer £56000 - £70000 p/a + BUPA, bonus and full benefits Gloucester, Gloucestershire 4 Day Work Week OptionLockheed Martin Rotary and Mission Systems (RMS) provides systems engineering, software development, training solutions and complex program management for global security, civil and commercial markets.Simply stated, our mis...

Senior Software Developer About the Role We are seeking an experienced Senior Software Developer to join our engineering team developing scalable insurance technology platforms used by global clients in the insurance sector. This is an opportunity to work on modern cloud-based applications, contribute to architectural decisions, and help drive bes...

I am partnered with one of the top, market leading trading firms in Europe to build our their London presence, looking for some of the best .NET quantitative developers to design & build a completely brand new trading platform, to support their day-to-day trading and core quant infrastructure for risk and PnL systems across every area of the busine...

Principal Trading Systems Architect – FIX & Execution (Capital Markets / Fintech)Day Rate: €500–€600 per dayIR35: Outside IR35Contract: 6 months initial (extension likely)Location: London or Mainland EuropeJob DescriptionYou'll be working for a well‑established capital markets participant modernising its electronic trading and execution infrastruct...

Lead Front End Engineer - React.js, TypeScript, Next.js, JavaScript💰 Up to £100,000 (DOE)📍 London - 2 days a week on site.🏢 SCALE-UPI’m currently partnering with an exciting scale-up based in London that’s gearing up for major growth in 2026, and we’re looking for an exceptional Senior Software Engineer.With new products launching and significan...

Principal Trading Systems Architect – FIX & Execution (Capital Markets / Fintech)Day Rate: €500–€600 per dayIR35: Outside IR35Contract: 6 months initial (extension likely)Location: London or Mainland EuropeJob DescriptionYou'll be working for a well‑established capital markets participant modernising its electronic trading and execution infrastruct...

Client:Our client a leading Multinational Semiconductor Company requires a Lead C++ (14/17) Software Engineer for role based in Newcastle, England.The role requires the candidates to be based onsite 4 days per week.Role:The successful candidate will be deeply involved in the development and implementation of a new EDA technology with a strong focus...

💼 Role: Lead Python Engineer (Hands-on Team Lead)📍 Location: London – Hybrid (3 days office / 2 days WFH)💰 Salary: Up to 130k base🏦 Industry: Fintech PlatformWe’re working with a profitable, high-growth UK fintech building a platform used by wealth and advisory firms to manage investment accounts, portfolios and trading workflows.Following a re...

Lead Python Developer at an edtech startup in LondonThis new Lead Developer role is with a London EdTech startup using AI and ML in their product. Their platform is live, the next stage for them is to scale internally and they need a Technical Lead to own the architecture and steer the engineering team through it.What will the Technical Lead be doi...