Frontend Software Engineer

ONO AI has been engaged as a hiring partner by a well-funded fintech startup in San Francisco. Having raised almost $10M in funding, and attacking a $44B market, they're looking to appoint two Frontend Software Engineers, that enjoys deep technical thinking and working on specific frontend problems. Our client is building embedded accounting software for the vertical SaaS platforms and neobanks that small businesses already use. Well backed and growing rapidly. The RoleWe are looking to identify two Frontend Software Engineers. You won't be building a website. You'll be building a publicly published React component library on NPM that the client's customers embed directly into their own platforms. This is a highly leveraged form of frontend engineering — with unique challenges around customisation, backwards compatibility, and internationalisation that you simply don't encounter in conventional product engineering. What You'll DoBuild and maintain the publicly published React component library embedded by our client's platform customersSolve hard frontend problems: customisation, backwards compatibility, internationalisation at component levelOwn features end-to-end — from design through to shipped component in productionContribute to code review and help raise the engineering bar as the team scalesCollaborate directly with the CTO and the core engineering team on architecture and prioritiesWhat We're Looking For2–7 years of frontend engineering experienceProduction React experience building component-based UIs — not just consuming themEvidence of increasing responsibility or promotions earlier in your careerBackground at a high-growth startup (seed to Series D) on a real engineering teamHigh ownership mentality — you take projects all the way, not just ticketsBased in or willing to relocate to SF Bay Area; on-site 5 days/weekUS work authorisation or H-1B transfer/O-1 (no new H-1B filings supported)StackReact · TypeScript · SCSS · NPM · Kotlin · Ktor · PostgreSQL · AWS ECS · GitHub Actions · Sentry · BetterstackThe OpportunityFrontend engineering with real technical depth — embedded components, not web pagesBacked and $9.3M raised so far $44B market, early in the build — massive scope to shape how the product evolvesHighly competitive base salary + competitive equity + benefits Small team, direct access to leadership, no layersInterview ProcessInitial screen (30 min) — culture, motivation, and startup fit with CTO Code review exercise (30 min, take-home) — review and provide feedback on provided codeTechnical panel (2 hrs) — application design + past project deep-diveOn-site (1 day) — work on a real backlog project alongside the teamApply today for consideration for the frontend software engineering role in a fast paced startup company!