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.