Senior Backend Developer

Summary

Join our technology company, established in 2008, as a Backend Developer. We develop and implement innovative fintech solutions using blockchain and online payment expertise. This role involves working on a long-running, backend-intensive platform in an MVP-driven development phase, including future blockchain integration. You will own and evolve backend components, drive architectural decisions, and deliver production-grade increments. We value your opinion and its impact on product development. The position offers remote work within Poland.

Requirements

• Strong experience in backend development, ideally using .NET
• Familiarity with PL/pgSQL or other PostgreSQL procedural programming
• Hands-on experience with Docker and container-based workflows
• Proficient in Domain-Driven Design (DDD) principles
• Comfortable working in agile/sprint-based development with clearly defined deliverables
• Familiarity with CI/CD pipelines, ideally written in Starlark or similar
• Ability to debug and contribute to supporting services written in Go, TypeScript, or Rust
• Experience with microservice architectures
• Ability to propose architecture and tech stack solutions based on business constraints
• Comfort working closely with a Product Owner and Delivery Manager

Responsibilities

• Own and evolve backend components of the platform
• Drive architectural decisions and tech stack discussions
• Deliver production-grade increments each sprint
• Consult regularly with stakeholders to align technical strategy with business needs
• Support the long-term evolution of the platform, including future blockchain integration
• Learn about HyperLedger and gain HyperLedger Fabric Certified Practitioner certification

Preferred Qualifications

• Experience working with or integrating blockchain technologies
• Exposure to infrastructure tools like Jsonnet or Starlark
• Frontend awareness for full-cycle collaboration