Senior Fullstack Engineer (Fintech)

#vacancy #fulltime #React #TypeScript #Supabase #remote #EU

🚀 Timspark is looking for a Senior Full-Stack Engineer to join our international team 🚀

Senior Full-Stack Engineer with strong experience in React and TypeScript (SPA architecture)
Solid backend experience with serverless environments, preferably Supabase Edge Functions or Deno runtime
Strong knowledge of PostgreSQL including schema design, performance tuning, and Row-Level Security (RLS)
Experience deploying and managing applications on Vercel or similar platforms with global CDN and auto-scaling
Good understanding of network security principles including WAF, DDoS protection, and SSL/TLS (Cloudflare experience is a plus)
Hands-on experience integrating payment systems, preferably Stripe
Experience with open banking integrations such as Plaid or other PSD2-compliant providers
Familiarity with AI/LLM integrations, ideally working with Anthropic Claude or similar models
Experience with LLM observability tools (e.g., Langfuse) including cost tracking and performance monitoring
Strong API design skills (REST/gRPC) and ability to structure scalable, maintainable services
Experience with authentication and authorization patterns, including secure session handling and token-based auth
Understanding of frontend-backend interaction patterns, state management, and performance optimization in SPAs
Ability to work with third-party APIs and manage integrations reliably
Experience with CI/CD pipelines and modern development workflows
Strong debugging, testing, and code review practices
Ability to work independently in a fast-paced environment and make pragmatic engineering decisions
Good communication skills and ability to collaborate with cross-functional teams including product and design
Fluent English (written and spoken)

Feel free to contact me Показать контакты 🤗