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