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

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