Senior QA Engineer (Blockchain)

TL;DR

Senior QA Engineer (Blockchain): Design and maintain end-to-end test platforms for cryptographic primitives and blockchain services, building automated CI/CD pipelines with an accent on performance, stress, and chaos testing. Focus on root cause analysis, defining QA processes, and ensuring system resilience and reliability under pressure.

Location: Paris, with possible full remote option.

Company

hirify.global is an open source cryptography company building state-of-the-art Fully Homomorphic Encryption (FHE) solutions for blockchain.

What you will do

• Design and maintain the end-to-end test platform, including deterministic environments and mocks for SDKs and APIs.
• Create and integrate automated tests (Python/Bash) into CI/CD pipelines (GitHub Actions).
• Conduct performance, stress, and chaos testing to ensure system resilience.
• Investigate failures, diagnose root causes, and work with developers to fix issues.
• Define QA processes and templates to maintain high-quality unit and integration tests.

Requirements

• 5+ years in QA for distributed or multi-service systems.
• Strong scripting skills in Python and Bash within Linux environments.
• Familiarity with Rust and TypeScript/JavaScript.
• Hands-on experience with Docker/Kubernetes, CI/CD pipelines, and databases (PostgreSQL, Redis).
• Experience using observability tools like Grafana, Prometheus, or OpenTelemetry.
• A mindset of enjoying "breaking things" to make them stronger and a developer-centric approach to quality.

Nice to have

• Experience with K6 or similar load-testing frameworks.
• A background in software development.
• Previous experience in blockchain or cryptography.

Culture & Benefits

• hirify.global values and promotes diversity, offering a fair chance for evaluation.
• Work on state-of-the-art Fully Homomorphic Encryption (FHE) solutions.
• Build secure infrastructure and SDKs that empower developers to build private applications.
• Join an open-source cryptography company.
• A pleasant, stress-free, and friendly hiring process.

Hiring process

• Step 1: Fill out the application form.
• Step 2: Tackle a challenge to demonstrate problem-solving skills.
• Step 3: Complete a technical interview to showcase expertise.
• Step 4: Have a cultural fit and compensation chat with the COO.
• Step 5: Participate in a hacking trial to test practical skills.
• Step 6: Undergo a reference check before an offer is extended.