Senior Backend Developer

4 tygodni temu

Łódź, łódzkie, Polska Espeo Software Pełny etat 21 zł - 840 zł

We are a technology company that started its journey in 2008. Our main headquarters is located in the picturesque city of Poznań, nestled by the beautiful Malta lake. For more than 16 years, we have been assisting companies in developing and implementing innovative fintech solutions. Leveraging our expertise in areas such as blockchain, online payments, and more, our clients can invent and develop cutting-edge solutions and services that keep them at the forefront of innovation.


We are looking for a Backend Developer to join our experienced and agile team on a long-running, backend-intensive platform that has just entered production but remains in an MVP-driven development phase. The project has been active for nearly 2 years and continues to evolve, with ambitious future plans—including the introduction of blockchain components.


We’re not just building software. We own the product and guide the client on technical strategy, architecture, and best practices. If you thrive in environments where your opinion shapes the product, this is the right role for you.


Senior Backend Developer

SKILLS: .NET | GO | Rust | NoSQL | PostgreSQL

B2B: PLN 130 - 170 / Hour

LOCATION: REMOTE (POLAND)


Key Duties and Requirements: A Roadmap to Your Professional Success


Scope of 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.


Here’s a set of skills we require:

  • 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 develop services written in Golang, TypeScript, Rust and C#.

  • 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.


Nice to have:

  • Experience working with or integrating blockchain technologies.

  • Exposure to infrastructure tools like Jsonnet or Starlark.

  • Frontend and end-to-end testing awareness for full cycle collaboration.

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