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Location: Hybrid (Stockholm, Sweden)
Type: Full-time
About Us
We are a fast-growing fintech startup building Europe’s first loan tokenization platform. Our platform converts real-world loans into digital tokens using ERC tokenization standards, making investment in diversified loan pools transparent and efficient.
This is an opportunity to own a modern backend that powers fintech + blockchain applications at launch scale.
What You'll Do
As a Senior Backend Engineer, you’ll be:
- Designing and shipping secure, versioned REST APIs (Node.js + TypeScript)
- Modeling and operating our PostgreSQL schema (migrations, indexing, performance)
- Building ingestion & normalization for multiple credit institutions (webhooks + scheduled pulls)
- Implementing pool and loan status logic (allocation, utilization/WAM/WAIR, lifecycle history)
- Adding idempotency, a transactional outbox, and lightweight eventing
- Setting up monitoring & alerts (dashboards, SLOs)
- Collaborating with the CTO to integrate backend flows with our blockchain services
What We're Looking For
- 5+ years building production backends (ideally Node.js + TypeScript; other stacks welcome)
- Strong SQL/Postgres fundamentals; confident with schema design and migrations
- Proven API engineering: pagination, filtering, validation, auth, rate limits, safe retries
- Experience with event-driven patterns (outbox, at-least-once delivery, idempotent consumers)
- Solid cloud skills (GCP), Docker, and CI/CD; security hygiene (HMAC webhooks, secrets, RBAC)
- Clear communication, ownership mindset, and a bias to ship
Nice-to-Have
- Familiarity with ERC tokenization standards and on-chain data flows
- GCP hands-on: Cloud Run, Cloud SQL, Pub/Sub, Secret Manager, Cloud Scheduler/Tasks
- Exposure to viem/ethers (reading events, simple calls)
- Observability (OpenTelemetry, dashboards/SLOs) and Terraform/IaC
What You'll Gain
- A chance to contribute to a live launch in the European DeFi market
- Real influence on architecture, reliability, and product direction
- End-to-end tokenization exposure using ERC standards, from orchestration to on-chain issuance
- High ownership in a small, senior team with fast feedback loops
Key Skills
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