Quality Engineer – QShield (Cybersecurity Products)

Quarkslab; France; Remote; EUR 55,000 - 75,000; Full time

Job summary

Quarkslab recherche un Quality Engineer pour piloter la stratégie de test des produits QShield. Vous dirigerez l’automatisation fonctionnelle et d’intégration, et garantirez des niveaux élevés de qualité logicielle.

Vous travaillerez avec les ingénieurs pour comprendre les systèmes, définir des tests régressifs et soutenir le triage des problèmes, tout en promouvant les meilleures pratiques de test à travers plusieurs plateformes Linux/Windows/macOS.

Qualifications

• Solide expérience en conception et maintenance de cadres de test automatisés.
• Forte compétence Python pour outils, scripting et orchestration des tests.
• À l’aise sur différents OS (Linux, Windows, macOS).
• Esprit structuré et autonome, capable de prendre en charge l’infrastructure de test.
• Bonnes compétences de communication et capacité à encadrer les ingénieurs.
• Curiosité et rigueur – ne vous arrêtez pas à “ça marche sur ma machine”.

Responsibilities

• Définir et mettre en œuvre des stratégies de tests fonctionnels et d’intégration.
• Évaluer et améliorer la couverture de test (plus de 1000 tests).
• Guider les développeurs dans l’écriture et le maintien des tests efficaces.

Skills

Test automation

Python

OS diversity

Mentor engineers

Communication skills

Tools

LIT

Python

C/C++

Java

Job description

About Quarkslab

Quarkslab builds cutting-edge cybersecurity solutions used by security-driven companies and institutions around the world. Our QShield product suite focuses on software protection and reverse engineering resistance across desktop, mobile, and embedded platforms.

We’re not in the cloud - we build real software, tested on real systems. If you enjoy diving deep into complex technical environments, automating smart test coverage, and owning quality end-to-end, read on.

Description du poste

Your Mission

We’re looking for a Quality Engineer to own, drive, and evolve the testing strategy for QShield products. You’ll take the lead on functional and integration test automation, and ensure engineers uphold a high standard of testing. This role blends technical depth, test architecture, and education - you’ll be the quality ambassador across multiple products and platforms.

What You’ll Do

Lead Test Strategy

• Define and implement strategies for functional and integration testing.
• Continuously evaluate and improve test coverage (we have over 1000+ tests).
• Identify gaps, deadweight, and flaky tests and fix them.

Spread the Quality Culture

• Guide and support developers in writing and maintaining effective tests.
• Help teams adopt best practices in automated testing and test-driven development.
• Act as a reference point for all QA-related matters across product teams.

Dig Deep Into Complex Systems

• Work closely with engineers to understand product internals.
• Reproduce bugs, build regression tests, and support issue triage.
• Ensure our products are robust across updates and across environments.

Our Tech Stack

Languages & Tools:

• LIT (LLVM’s test format)
• Python
• C/C++ and Java (nice to have for deeper integration)

Operating Systems:

• Linux
• Windows
• macOS
• Android
• iOS

Build Toolchains:

• CMake
• Java (Maven, Gradle)
• MSVC / Xcode
• Android NDK/SDK (occasionally)

Profil recherché

• Solid experience designing and maintaining automated test frameworks.
• Strong Python skills, especially for tooling, scripting, or test orchestration.
• Comfortable working across OSes (Linux, Windows, macOS).
• A structured and autonomous mindset, able to take ownership of test infrastructure.
• Great communication skills and willingness to mentor engineers.
• Curious and rigorous - you don’t stop at "it works on my machine."

Nice to Have

• Background in product testing or software QA in B2B environments.
• Familiarity with cybersecurity, reverse engineering, or software protection.
• Bonus points for C++ or Java knowledge - not mandatory but helpful.
• adminsys/cross-platform development

Why Join Us?

• Take ownership of quality in mission-critical security products.
• Collaborate with a team of brilliant engineers and security researchers.
• Shape your tooling and test architecture - your decisions will matter.
• Work on meaningful tech, with a human-sized team and international outlook.
• Flexible work environment, whether you're near Paris or remote (in France).