Serokell
Middle SDET (TypeScript, Web3)
SerokellFrance8 days ago
ContractRemote FriendlyEngineering, Information Technology
We are looking for a Middle SDET (QA Automation) to join a team of fierce and fun Serokellers and help ensure the stability, reliability, and quality of a blockchain-based solution.

Currently, we do not have open roles, and our hiring process is passive, with a focus on building a talent pool for future opportunities. Hiring Process Overview: We invite interested candidates to fill in a form. Within a few months of completing the form, we conduct an HR screening with those whose profiles align with our requirements. When a position opens, we reach out to candidates who performed well in both stages and match the specific role needs, and invite for a technical interview.

Responsibilities

  • Support QA activities from pre-launch through stabilization after release.
  • Build and maintain TypeScript-first automation (Playwright, Jest, Node-based tooling).
  • Design API, UI, and CLI test coverage with reliable, actionable signals.
  • Integrate tests into CI/CD (GitHub Actions, Docker; basic pipelines) and keep them green.
  • Collaborate with engineers/DevOps to provision containerized test environments and, when needed, ephemeral testnets.
  • Author and maintain manual and automated test cases; keep test docs current.
  • Log, triage, track, and re-test defects in the agreed issue tracker.
  • Participate in release readiness reviews and sign-off.
  • Use Git proficiently in day-to-day work (branching, merges, rebases, conflict resolution).

Requirements

  • 3+ years of QA in blockchain or fintech.
  • TypeScript test automation experience (Playwright, Jest, Node-based frameworks).
  • Solid understanding of core data structures.
  • Hands-on API / UI / CLI automation.
  • CI/CD integration experience (GitHub Actions, Docker; basic pipelines).
  • Git proficiency (branching, merges, rebases, conflict resolution).

Nice-to-have

  • Rust familiarity.
  • Performance and load testing (k6).
  • Security testing.
  • Smart contract / DApp QA (Hardhat, Foundry, ethers.js, viem).
  • Web3 QA on major chains (Ethereum, Bitcoin, Solana, etc.).
  • Blockchain node and RPC testing, event verification.
  • Containerized test envs (Docker, K8s, ephemeral testnets).

What We Offer

  • Competitive salary.
  • Attractive international projects.
  • Participation in the leading world conferences.
  • International teams and multicultural environment.
  • Fully remote work and flexible working hours.
  • Possibility to take days off at any time you need
  • Investment in your professional and career growth, which will correspond to wage growth.
  • Mentoring and training.
  • Opportunity to contribute to one of the functional programming industry’s leading blogs.
  • Therapy sessions to support your well-being.

By joining Serokell, you’ll become part of a warm community of ingenious engineers, computer scientists, designers, marketers, and other inventive people. You’ll take part in ambitious projects that build the next generation of computer software, explore bold initiatives free from bureaucracy, and enjoy our Slack channels that range from #music to #butthurt (did we mention our extensive custom emoji set?).

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