Fresha

Backend Engineer (B2B - Warsaw)

Fresha
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over 1 year ago
Warsaw, PolandMid Level

Responsibilities

  • Collaborate with Product, Design, Frontend, Infrastructure, and Mobile engineers to deliver features from discovery through rollout.
  • Own features end to end, including technical design, implementation, testing, observability, and rollout.
  • Design, build, and maintain scalable and reliable Ruby and Elixir code.
  • Work with GraphQL, TypeScript, gRPC, Kafka, and Kubernetes in a polyglot, microservice-oriented environment.
  • Apply Domain-Driven Design and use AI agents to accelerate development while verifying generated code against architecture, security, and quality standards.

Requirements

  • At least 2 years of experience in product engineering, developer tools, or infrastructure at scale.
  • Experience building and maintaining globally distributed systems.
  • Knowledge of event-driven architectures and Kafka.
  • Deep experience building and interacting with AI agents and integrating them into engineering workflows.
  • Familiarity with Elixir, Ruby, or TypeScript is preferred.
  • Ability to work as a pragmatic generalist across new frameworks and complex technical challenges.

Benefits

  • 25–40 k PLN net per month plus RSUs.
  • B2B contract.
  • Warsaw-based onsite work with four days onsite per week.
  • Access to AI development tools including Claude, GitHub Copilot, and Cursor.
  • Opportunity to influence product and architecture, contribute to a microservices migration, and work in an autonomous and innovative culture.
  • Interview process targeted for completion with feedback within four weeks.

Tech Stack

Categories

Fresha

About Fresha

501-1,000 employees
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