Senior Fullstack Developer (Fintech)

#vacancy #remote #fintech #kotlin #java #fullstack #react #angular #next.js

🚀 Senior Fullstack Developer (for our partner group) 🚀

🌎 Location: Fully Remote
♥️ Company: FYST (https://fyst.com/) - FinTech

➡️ 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


☄️ Quick Apply: Показать контакты