{"id":1178717,"url":"https://alion.io/job/saturn-senior-backend-engineer","title":"Senior Backend Engineer","company":{"id":5639,"name":"Saturn","domain":"saturnos.com","url":"https://alion.io/company/saturn","size_band":null,"is_staffing_agency":false,"is_intermediary":false,"listed_via":null,"ats_vendor":"Work at a Startup","truth_index":{"grade":"B","score":75,"open_postings":7,"ghost_share":0,"stale_share":1,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-09-24T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"on_site","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":{"min":90000,"max":150000,"currency":"GBP","period":"year","gross":null,"usd_annual":198351},"salary_estimate":null,"experience_years_min":6,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"TypeScript","optional":false},{"name":"Postman","optional":true}],"status":"live","first_seen_at":"2026-09-24T12:26:24Z","employer_posted_date":"2026-09-24","last_verified_at":"2026-09-24T16:17:38Z","board_verified":true,"closed_at":null,"days_open":0,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":0},"description":"Your role\nAs a Senior Backend Engineer, you will own substantial backend systems and platform capabilities from design through to reliable production operation.\nYou will work closely with product engineers, AI engineers, domain experts and engineering leadership to turn complex financial and regulatory problems into durable systems.\nYou will not wait for every problem to arrive as a complete technical specification. You will be expected to understand the business objective, identify the important constraints and make sound engineering trade-offs.\nYour work will help determine whether Saturn becomes a collection of useful applications or a coherent platform capable of supporting increasingly important financial workflows.\nWhat we’re looking for\n4+ years building and shipping customer-facing software in production\nExperience owning a substantial product area from an ambiguous problem through to adoption and iteration\nStrong frontend engineering depth in TypeScript and modern web frameworks\nStrong full-stack capability, with the judgement to work across the system where needed\nExperience contributing to frontend architecture and shared engineering foundations\nA record of making product decisions without relying on complete specifications\nStrong product judgement and the ability to explain trade-offs clearly\nExperience working closely with design while maintaining technical ownership\nEvidence of improving performance, accessibility and interaction quality in production products\nExperience building reliable interfaces around complex data, workflows or permissions\nExperience investigating production issues and translating findings into product improvements\nA record of scoping and delivering work measured in months from a business or customer objective\nStrong written communication, with the ability to document product and technical reasoning\nExperience improving standards across code review, testing, release and client-facing quality\nComfort owning decisions with incomplete information and real deadlines\nExperience mentoring engineers and improving the quality of a team\nExperience working at startup pace without sacrificing judgement or craft\nPreferred experience\nBuilding software for financial services, healthcare, legal or another regulated domain\nFinancial advice, wealth management or investment products\nBuilding AI-native products or interfaces around probabilistic systems\nDesigning human review, approval or exception-handling workflows\nMobile product development\nComplex forms, document workflows or data-heavy applications\nDesign systems and frontend platform architecture\nBuilding enterprise products with sophisticated permissions and firm-specific configuration\nAccessibility standards and performance optimisation\nTaking a product from early adoption to broad production use\nWhat success looks like\nSuccess in this role means:\nadvisers can complete more of their working day inside Saturn\ncomplex workflows become simpler without losing regulatory control\nproduct decisions are grounded in evidence and clear reasoning\nclient-facing engineering moves quickly without accumulating avoidable inconsistency\nthe web and mobile experience feels coherent across products\nperformance, accessibility and interaction quality improve as the product scales\nproduction issues are understood quickly and influence what gets built next\nengineers increasingly build on shared foundations rather than fragmented product patterns\nadvisers trust Saturn with increasingly important parts of their work\nthe product becomes harder to replace because it is deeply integrated into how firms operate\nSaturn develops a strong product engineering culture with a high bar for craft, ownership and judgement\nThe team\nOur engineers care deeply about craft, speed and quality. They include early and founding team members from companies including Rippling, Postman, Gojek, CRED and Slice.\nYou will work alongside product designers, backend engineers, AI engineers and domain experts with decades of experience in financial advice and compliance.\nWe are building a small, high-calibre engineering organisation for people who want genuine ownership, difficult product problems and the opportunity to shape an important company while its foundations are still being formed.\nOur values\nWe hire people who pursue greatness, care deeply about their work, seek truth over comfort, earn trust rather than assume it, and succeed or fail as one team.\nWhat we offer\na competitive salary with regular appraisals\na competitive equity package in an early-stage company with significant growth potential\nour new five-floor office, The Dome, with an on-site gym and roof terrace\nbest-in-class private medical and dental insurance\na dedicated learning and professional development budget\naccess to a world-class gym and wellness centre two minutes from the office\ngenuinely difficult problems at the intersection of fintech, regulation and AI\nhigh ownership and autonomy while building the foundations of a company with a credible path to 50 times revenue growth\na tight-knit, ambitious team that cares deeply about quality and one another","description_format":"text","description_chars":5139,"description_truncated":false,"requirements":{"experience_years_min":6,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Dental insurance","Equity","Professional development"],"hiring_locations":[],"hiring_excludes":[],"relocation_offered":false,"industries":["Business Process Automation (BPA)","Wealth Management","Financial AI"],"lifecycle":[{"event":"open","at":"2026-09-24T12:26:24Z"}],"liveness":{"score":86,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.86,"p_room":1,"age_days":0,"expected_fill_days":24,"reasons":["conf:1","win:early"],"computed_at":"2026-09-24T17:55:14Z"},"pay":{"stated_usd_annual":198351,"is_top_pay":true},"html_url":"https://alion.io/job/saturn-senior-backend-engineer","json_url":"https://alion.io/job/saturn-senior-backend-engineer.json","meta":{"generated_at":"2026-09-24T17:55:14Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers"}}