{"id":3968269,"url":"https://alion.io/job/sunsave-product-engineer-mid-level-senior","title":"Product Engineer (Mid-Level / Senior)","company":{"id":2063800,"name":"Sunsave","domain":"sunsave.energy","url":"https://alion.io/company/sunsave","size_band":"11-50","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Welcome to the Jungle","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"Claude Code","optional":false},{"name":"Cursor","optional":false},{"name":"Nest.JS","optional":false},{"name":"Next.js","optional":false},{"name":"PostgreSQL","optional":false},{"name":"React.js","optional":false},{"name":"TypeScript","optional":false},{"name":"JavaScript","optional":true},{"name":"Node JS","optional":true}],"status":"live","first_seen_at":"2026-11-09T11:43:31Z","employer_posted_date":"2026-11-09","last_verified_at":"2026-11-10T02:00:31Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Join Sunsave, a fast-growing company revolutionizing the energy industry. As a Product Engineer or Senior Product Engineer, you'll own problems end to end, from shaping requirements to running solutions in production. You'll work closely with users, ship early, and build AI-native solutions. This is a full-stack role based in London, with a competitive salary, equity, private health insurance, and flexible working.\nMissions\nOwn problems end to end, from shaping the requirements to running the solution in production.\nWork directly with users to shape the simplest solution, and say no when a requirement solves the wrong problem.\nPut first versions in front of real users fast, learn from real use, and drop what doesn't work.\nProfil recherché\nYou've built and run production software at a fast-growing product company. We care more about what you've built, and how you think, than about your title.\nBuilds with AI: You use coding agents (Claude Code, Cursor or similar) every day. You delegate the implementation, never the thinking, and you own every line you merge.\n\nProduct-driven: You talk to users, challenge requirements, and can show a decision that changed what you built.\n\nEngineering: You design for correctness and failure, and you've been on the hook when something broke.\n\nOwnership: You set the measure of success before building, and check that what you build achieves it.\n\nIntensity: You've chosen fast-moving, high-expectation environments before and do your best work in them.\n\nIf you have experience in these areas, it's a bonus (but it's not a requirement) : TypeScript, NestJS, React/Next.js, PostgreSQL, AWS. Payments, lending or other regulated data. 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