Senior Software Engineer
$80,000–$140,000 year
On-siteParis, Île-de-France, France
Job Summary
Design, build, and maintain secure, scalable backend services and APIs for wallet operations, transaction processing, and multi-blockchain integrations. Architect databases and microservices for performance and reliability, then own projects end-to-end from requests through production iteration. Troubleshoot complex issues, resolve bottlenecks, and ensure resilience under real-world financial workloads while collaborating with product, security, and leadership on roadmap and technical direction. Document systems, share knowledge, and support client-facing discussions. Contribute to architecture decisions, improve development workflows, and help ensure the platform remains fast, secure, and resilient.
Required Qualifications
- 8+ years of backend software engineering experience in fintech or finance
- Strong in TypeScript
- proven track record building scalable APIs and dev tools
- Expertise with databases (PostgreSQL, DynamoDB, NoSQL) and AWS services
- Skilled in microservices, CI/CD pipelines, observability, and SSLDC practices
- Familiar with public key infrastructure and backend security fundamentals
- Strong problem-solving
- clear communication
- ability to deliver under pressure
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