Senior Fullstack Developer (for our partner group)
WHAT YOU'LL BE WORKING ON Backend (Kotlin): Financial core: ledger, settlement, payouts, pricing, reserves Integrations: payment providers, KYC/KYB, banking (SEPA/SWIFT) Webhooks & event-driven processing REST APIs for product and internal tools BPMN workflows (Camunda): onboarding, AML, disputes, settlements Compliance flows: transaction monitoring, SAR Frontend (Next.js): Merchant portal (transactions, payouts, dashboards, onboarding) Internal ops/admin tools (AML, disputes, treasury, compliance) Developer portal (API docs, sandbox, integration guides) Reconciliation across multiple systems (gateway → processor → bank) Reporting: regulatory, scheme, financial Fully automated testing (unit / integration / e2e, no manual QA). OUR TECH STACK Backend: Kotlin, Spring Boot 3, Spring Modulith Frontend: Next.js 15, TypeScript, shadcn/ui, Tailwind CSS Database: PostgreSQL 18 (RDS, pgvector, JSONB, FTS) BPMS: Camunda 8 (Zeebe, BPMN, DMN) Auth: Okta Infra: AWS, EKS, Docker, GitLab CI/CD WHAT YOU NEED TO SUCCEED IN THIS ROLE At least 4-5 years of experience with Java/Kotlin (Spring Boot) Solid experience building REST APIs and backend systems Hands-on experience with React / Next.js and TypeScript Strong knowledge of PostgreSQL (queries, indexing, migrations) Understanding of event-driven architecture, webhooks, async processing Experience with API design (versioning, idempotency, error handling) Experience with CI/CD and Git workflows Full-stack mindset (not backend-only) Ability to work with system design and architecture decisions Proactive approach and ownership (doesn’t wait for tasks, drives solutions) Testing ownership AI fluency: actively using AI tools in daily engineering work (not just basic usage) Comfortable in a fast-paced startup environment, actively contributing ideas and driving solutions end-to-end rather than just executing tasks Good English level (at least A2-B1) and fluent russian WHAT WE OFFER Remote work (EU timezone or close to it) Competitive compensation above typical market benchmarks for similar roles Direct collaboration with CTO and CPO Fintech domain: card payments, compliance, settlement - deep immersion Paid vacation and sick leave Company-provided equipment (Apple devices) Small, highly engaged team with strong ownership Real opportunity to influence product decisions and bring your ideas to life Fast-paced environment with minimal bureaucracy Apply To This Job