Unknown Company

Senior Full Stack Engineer (B2B - Warsaw)

warsaw, il • Posted 4 days ago
Remote Contract IT & Technology

Location

Warsaw, Poland — Onsite (4 days on-site)

Contract

B2B · 25–40k PLN net /month + RSUs

About Fresha

Fresha is the operating system for the global beauty, wellness and self-care industry, connecting and powering everything from salons and barbers to spas, medspas, fitness studios and health practices.

Fresha is a leading AI-powered OS trusted by millions of consumers and businesses worldwide. With 130,000+ businesses, 450,000+ stylists, and processing over 1 billion appointments, Fresha empowers businesses with bookings, point-of-sale, marketing, and more.

Your Impact as a Full Stack Engineer

At Fresha, AI drives feature delivery. Engineers get top-tier tooling (Claude, GitHub Copilot, Cursor) to focus on shipping high-impact product features. We value engineers who leverage these tools within 6‑week cycles, delivering reliable, secure, and user‑centric final experiences.

What You’ll Do

  • Collaborate closely with Product, Design, Frontend, Infrastructure, and Mobile engineers to take features from discovery to rollout and beyond.
  • Take responsibility for features from discovery to observability: technical design, implementation, testing, and rollout.
  • Design, build, and maintain efficient, scalable, and reliable Ruby/Elixir code.
  • Work with a polyglot stack (Ruby, Elixir, GraphQL, TypeScript, gRPC) and modern messaging systems (Kafka).
  • Operate within a Kubernetes‑driven environment as we continue moving to a microservice architecture.
  • Embrace Domain‑Driven Design to build high‑quality, impactful products from inception to delivery.

What We’re Looking For

  • Deep experience building and interacting with AI agents to amplify coding output; integrate agents while meeting architecture and security standards.
  • Experience building and maintaining globally distributed systems.
  • Knowledge of event‑driven architectures (Kafka).
  • ~2+ years of experience in product engineering, developer tools, or infrastructure at scale.
  • Pragmatic generalist who thrives on learning new frameworks and tackles complex challenges.
  • Familiarity with Elixir, Ruby, or TypeScript is a plus.

Benefits

  • Real impact on a rapidly growing global business.
  • Work with modern technologies and contribute to a significant migration to microservices.
  • Dynamic culture encouraging autonomy and innovation.

Workplace and Schedule

All Fresha employees work from the office four days per week, with flexibility to work remotely on Wednesdays.

Warsaw office: 20th Floor, Aleje Jerozolimskie 81, 02-001 Warsaw, Poland

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