Full Stack Engineer (Senior) - Fintech / B2B
Posted
Summary
Senior backend/full-stack engineer at a Singapore fintech (hired via Fynder Talent) who owns core backend services end to end in Python on AWS — making architectural decisions, shipping continuously, mentoring mid-level engineers, and handling on-call for their services.
Our client is a fintech building the infrastructure that moves data reliably at scale. If you want to be part of a Regional business that operates lean fast, and product-led — engineers here own outcomes, not tickets.
We're hiring a Senior Backend Developer to own core services end to end, not just ship features within someone else's system.
What you'll own
- Design, build, and own backend services — you're accountable for their reliability, performance, and maintainability, not just the code you commit
- Make architectural decisions in your domain and drive technical direction for your squad without needing to be told what to build
- Ship to production continuously — we review PRs same-day and value velocity over process
- Raise the bar around you: mentor mid-level engineers, run design reviews, and push back on bad technical calls with evidence and alternatives
- Own your services in production, including on-call for your area
What we're looking for
- 5+ years of backend engineering, with a track record of owning a service or system end to end (not only features within one built by others)
- Strong Python (or a comparable backend language you can point to in production)
- Solid AWS and distributed-systems fundamentals — you've designed for scale and can talk through the trade-offs you made
- You've made architectural decisions the team actually adopted, and you can explain why
- Clear communicator — you can articulate technical decisions to non-technical stakeholders
- Preferred industry background: fintech, B2B infrastructure, payments, prediction markets or another high-reliability, data-intensive domain. If you've worked where speed and precision genuinely matter, that's what we're after.
Nice to have
- Experience in a consumer or B2B product company at meaningful scale
- AI-native workflow — you use AI tools in your day-to-day and have shipped or experimented with AI-powered features
- Exposure to event-driven architectures, high-throughput data pipelines, or financial-grade systems
Why this role
- Real ownership from day one — this is a genuine senior IC seat, not a feature factory
- A high-trust, low-bureaucracy engineering culture where the best technical argument wins
- Work that has to be correct, which makes it interesting
