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
• English level at least A2-B1 

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