Application Security Engineer

Type: Full time software engineer Location: Paris, France

What is Sqreen

Software is eating the world. But the bad guys are hacking software products every day. We are a team from the Apple internal security team, and we are on a mission to make application security simple for all developers.

Sqreen is a SaaS product that helps developers detect security issues, protect them from attacks, and gives engineering teams the information they need to build better applications.

The job

You will be responsible for discovering, investigating vulnerabilities within modern web applications. You will also design in-app protection. This also includes researching and designing defense mechanisms such as CSP (Content Security Policy), data isolation, data leaks, etc.

You are fan of digging into products to figure out how they work and how they can be exploited. You are passionate about web apps and security and love to write code.

You will disclose your work in publications, meetups, and travel on a regular basis to attend security conferences.

Responsibilities & Profile


  • Evaluate and quality new vulnerabilities found across Sqreen users
  • Design and implement defense mechanisms deployed by Sqreen
  • Perform penetration testing on our customers' apps
  • RedTeam // Hack and harden Sqreen infrastructure
  • Communicate about web security and Sqreen technology (confs, publications, etc.)


  • Bachelor's or Master's degree in computer science, computer engineering, statistics, mathematics or similar field
  • Experience (and passion!), hunting vulnerabilities in web apps
  • Experience with OWASP ecosystem, Content Security Policy, CORS, HSTS, etc.
  • Proficient in at least Python, Ruby or JavaScript
Apply Now


Sqreeners are security focused people who care about developers


Sqreen relies on a virtuous community, which is why our culture is all about sharing and transparency. Sqreen contributes to the Open Source community. Much of our work is shared in conferences, meetups and articles.

Our work environment is modern, casual, and respectful. Our engineering team is based in Paris. You will join a highly technical and product-driven team and contribute to an extraordinary game changing technology.

You will be proud to be part of it.