Saturn
Senior Backend Engineer
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Your role
As a Senior Backend Engineer, you will own substantial backend systems and platform capabilities from design through to reliable production operation.
You will work closely with product engineers, AI engineers, domain experts, and engineering leadership to turn complex financial and regulatory problems into durable systems.
You 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.
Your work will help determine whether Saturn becomes a collection of useful applications or a coherent platform capable of supporting increasingly important financial workflows.
What We’re Looking For
- 4+ years building and shipping customer-facing software in production
- Experience owning a substantial product area from an ambiguous problem through to adoption and iteration
- Strong frontend engineering depth in TypeScript and modern web frameworks
- Strong full-stack capability, with the judgement to work across the system where needed
- Experience contributing to frontend architecture and shared engineering foundations
- A record of making product decisions without relying on complete specifications
- Strong product judgement and the ability to explain trade-offs clearly
- Experience working closely with design while maintaining technical ownership
- Evidence of improving performance, accessibility, and interaction quality in production products
- Experience building reliable interfaces around complex data, workflows, or permissions
- Experience investigating production issues and translating findings into product improvements
- A record of scoping and delivering work measured in months from a business or customer objective
- Strong written communication, with the ability to document product and technical reasoning
- Experience improving standards across code review, testing, release, and client-facing quality
- Comfort owning decisions with incomplete information and real deadlines
- Experience mentoring engineers and improving the quality of a team
- Experience working at startup pace without sacrificing judgement or craft
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Preferred Experience
- Building software for financial services, healthcare, legal, or another regulated domain
- Financial advice, wealth management, or investment products
- Building AI-native products or interfaces around probabilistic systems
- Designing human review, approval, or exception-handling workflows
- Mobile product development
- Complex forms, document workflows, or data-heavy applications
- Design systems and frontend platform architecture
- Building enterprise products with sophisticated permissions and firm-specific configuration
- Accessibility standards and performance optimisation
- Taking a product from early adoption to broad production use
What Success Looks Like
Success in this role means:
- Advisers can complete more of their working day inside Saturn
- Complex workflows become simpler without losing regulatory control
- Product decisions are grounded in evidence and clear reasoning
- Client-facing engineering moves quickly without accumulating avoidable inconsistency
- The web and mobile experience feels coherent across products
- Performance, accessibility, and interaction quality improve as the product scales
- Production issues are understood quickly and influence what gets built next
- Engineers increasingly build on shared foundations rather than fragmented product patterns
- Advisers trust Saturn with increasingly important parts of their work
- The product becomes harder to replace because it is deeply integrated into how firms operate
- Saturn develops a strong product engineering culture with a high bar for craft, ownership, and judgement
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The team
Our engineers care deeply about craft, speed, and quality. They include early and founding team members from companies including Rippling, Postman, Gojek, CRED, and Slice.
You will work alongside product designers, backend engineers, AI engineers, and domain experts with decades of experience in financial advice and compliance.
We 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.
Our values
We 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.
What We Offer
- A competitive salary with regular appraisals
- A competitive equity package in an early-stage company with significant growth potential
- Our new five-floor office, The Dome, with an on-site gym and roof terrace
- Best-in-class private medical and dental insurance
- A dedicated learning and professional development budget
- Access to a world-class gym and wellness centre two minutes from the office
- Genuinely difficult problems at the intersection of fintech, regulation, and AI
- High ownership and autonomy while building the foundations of a company with a credible path to 50 times revenue growth
- A tight-knit, ambitious team that cares deeply about quality and one another
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