Jobs in London - Senior Software Engineer – Systems Improvement & Scale • London

Company: Car Planet

London

We’re Hiring: Senior Software Engineer – Systems Improvement & Scale Company: Car Planet Location: Enfield Full-Time (Open to initial contract trial)Car Planet is a fast-growing car supermarket and automotive retail business building and running our own in-house platforms — including Autogrid (our core Dealer Management System), plus supporting systems like Audiofy (call intelligence) and RoutePortal (logistics & routing).We’re looking for a senior, pragmatic software engineer to inspect, stabilise, and improve live, revenue-critical systems as the business scales. You’ll work hands-on with existing production systems to improve performance, reliability, and maintainability — without disrupting day-to-day operations. What You’ll Be Doing• Take ownership of an existing production codebase• Identify technical debt, performance bottlenecks, and architectural risks• Improve system stability, scalability, and maintainability incrementally• Safely refactor critical areas without disrupting live operations• Work across multiple internal systems:• Primary ownership: Autogrid• Secondary oversight: Audiofy & RoutePortal• Review code and raise engineering standards• Partner closely with the CEO, product, and operations teams• Turn business problems into practical technical solutions What We’re Looking ForEssential✔️ 5+ years professional software development experience✔️ Proven experience working on live production systems✔️ Full-stack JavaScript / TypeScript (Next.js, Node, APIs, databases)✔️ Python experience (scripting, services, tooling, data processing)✔️ Strong refactoring and system-improvement skills✔️ Comfortable in fast-moving, imperfect environments✔️ Able to work autonomously with strong judgement on priorities & riskHighly Desirable⭐ C# / .NET experience⭐ Startup or scale-up background⭐ Technical leadership experience⭐ Experience across multiple internal products The Package Salary: £40,000 – £60,000 (DOE) Open to initial contract engagement before permanent hireBenefits: • 28 days annual leave (incl. Bank Holidays) • Company events • Employee discount Working Hours: Monday – Friday | 09:00 – 18:00 On-site in Enfield Interested or know someone who fits this well? Send me a message or apply directly — we’d love to talk