via indeed · 1 juin 2026 ·il y a 5 jours

Subject Matter Expert Security Senior

Keystone Solutions
Brussels Remote
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Mission Overview:

This is a consultancy mission at a client site, where you will represent Keystone Solutions as a Subject Matter Expert Security \- Senior. As a Keystone Solutions consultant, you will be engaged in dynamic projects, working on\-site and remotely, and bringing your expertise to diverse client environments. You will join the Application Security \& Vulnerability Management team, carrying out all responsibilities under the Keystone Solutions consultancy model.

Responsibilities:

  • Manage requests from squads for setting up application security toolings managed by the team.

  • Conduct code reviews on applications developed within IT using security toolings (SAST).

  • Review usage of third\-party libraries using security tooling (SCA).

  • Proactively support and assist all IT development squads in secure development and SecDevOps adoption, including preparing training sessions on security topics and coaching squads on tool usage.

  • Manage the technical infrastructure supporting automatic code reviews and open source library evaluations, maintain applied policies (security, compliance), follow up and report on evaluations, keep development guidelines up\-to\-date, and review defects and vulnerabilities.

  • Create and maintain reporting on vulnerabilities.

  • Take a leadership role as an application security expert in the implementation of projects and changes within the team’s scope.

  • Support IT developers in finding solutions to security risks and incidents.

  • Provide input for new security measures, such as detection mechanisms.

  • Occasionally write scripts for internal tooling, leveraging your coding background to support secure code development.
Profile \& Requirements:
  • Master’s degree in IT or Engineering, or equivalent experience.

  • Experience in application development and up\-to\-date knowledge of current application development trends.

  • Strong interest in application security with the ambition to become an expert in the next 3\-5 years.

  • Very good understanding of the software development lifecycle in Agile and DevOps environments, including security checks at different stages.

  • Up\-to\-date on recent developments in software development, including programming languages, technologies, and standard tools/platforms (Jenkins, Gitlab, Maven, Docker, etc.).

  • Interest and initial experience in penetration testing.

  • Knowledge of network security and understanding of mobile application development and testing challenges.

  • Experience in environments where information security is critical (banking, pharma, aviation, nuclear, military, etc.) is a plus, but not required.

  • Team player, self\-starter, able to interact with various profiles (developers, architects, testers, business, management).

  • Willingness to stay up\-to\-date with the latest trends, quick learner, proactive attitude, good communication and influencing skills, analytical and synthesis skills, autonomy, commitment, perseverance, flexibility, accuracy, and control\-minded.

  • Ability to work in a dynamic, multicultural environment and provide solutions as part of a team.

  • Assertive and result\-oriented.
Languages:
  • Very good knowledge of English (absolute must).

  • Desirable to have knowledge of Dutch or French (not a must).
Work Location \& Telework:
  • 50% on\-site and 50% homeworking, depending on project needs.
Why Join Keystone Solutions?
  • As a consultant, you will experience a variety of challenges across different client environments, accelerating your professional growth.

  • Keystone Solutions is committed to turbo\-charged learning, offering broad learning experiences and continuous professional development.

  • We foster skyrocketing ambition, supporting your career growth within a dynamic consultancy framework.

  • Being a “K\-Stone” means bringing our core values—excellence, integrity, and collaboration—to every engagement.
Ready for the Challenge?

If you are ready to tackle technical and strategic challenges in a dynamic consultancy environment, apply today .

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