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
- 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
What We Do
FYST [faist] is a one-stop tech, payments and technology consultancy for eCommerce and FinTech businesses. It empowers entrepreneurs with a unique mix of agile technical payments capabilities, payment technologies guidance, regulatory compliance, and AML advisory services from its team of payment and banking industry leaders. Focused on technological excellence FYST offers clients a full scope of integration and software advisory, complemented by in-house payment gateways development. Designed to help businesses navigate the fast-growing cross-border eCommerce market, FYST brings together leading fintech innovators under one brand, combining unparalleled technical ingenuity, and tailored advice to help fledgling businesses successfully scale up, and receive access to more than 70 global payment methods via the network of partners.
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