Application Security Engineer

Sonarsource
Geneva, Switzerland
On-site

Who this role is best for

Strong fit for candidates with experience in secure cloud architecture and application security assessments who are interested in AI-assisted development and thrive in collaborative, high-impact environments. This role is based in Geneva and requires a deep understanding of modern cloud security practices.

Best fit for

  • Candidates with a background in cloud security and AI-assisted development who can influence product design from early stages
    — “Partner with product and engineering teams from the earliest design stages to build secure, resilient solutions by design.
  • Candidates with a strong attacker mindset and hands-on experience in penetration testing and bug-bounty programs
    — “Experience with penetration testing, red-team engagements, and bug-bounty programs, with an attacker mindset focused on protecting what matters most.

Things to consider

  • Geographic constraint in place — candidates must be willing to relocate to Geneva, Switzerland
    — “This role is based in Geneva, Switzerland. We are unable to consider candidates unwilling to be in Geneva
  • On-call participation may be required, indicating potential incident response responsibilities
    — “Occasional on-call participation may be required.

How to stand out

  • Highlight experience with AI and agentic systems in your security assessments and remediation work
    — “Experience assessing and securing AI and agentic AI capabilities
  • Demonstrate leadership in translating security findings into tangible, trust-building outcomes
    — “Translate findings into practical improvements and customer-facing trust artifacts.
  • Showcase your ability to apply threat modeling frameworks like STRIDE to design discussions
    — “Experience applying threat-modeling approaches, such as STRIDE, to improve design discussions
  • Emphasize your background in AWS environments and secure cloud architecture design
    — “Extensive experience with application and cloud architectures, predominantly AWS
  • Demonstrate hands-on experience with penetration testing and red-team engagements
    — “Experience with penetration testing, red-team engagements, and bug-bounty programs
Pace · Fast PacedCollaboration · HighAutonomy · MediumDecision Impact · Team

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • implementing security measures that reduce outages by 44%
  • leading security assessments and penetration tests
Typical background
experience in application security and cloud environments

Skills & requirements

Required

Application SecurityPenetration TestingSecurity ArchitectureCloud SecuritySecurity Compliance

Preferred

AI Code ReviewMachine Learning

About the role

Original posting from Sonarsource via Lever

Who is Sonar?

Sonar is driving the future of agent-centric software development. As the leader in AI code review and verification, we solve a critical problem: ensuring that software generated by AI-assisted developers or autonomous agents is reliable, secure, and maintainable.

Integrating seamlessly with Claude Code, Codex, Cursor, GitHub Copilot, Gemini, and Devin, we help over 75% of the Fortune 100 build trusted, reliable, compliant software. Customers who use Sonar are 44% less likely to report an outage due to AI-generated code.

We believe code verification is the critical missing link in the Agent-Centric Development Cycle (AC/DC). Industry giants like Nvidia, ServiceNow,Booking.com, Goldman Sachs, AstraZeneca, and Ford Motor Company.count on us to provide independent, explainable, consistent review and governance of their AI-generated code via products like:

SonarQube: The world’s leading AI code review and verification platform.

SonarQube Foundation Agent: Currently topping the leaderboards for agentic software repair.

SonarSweep & Sonar Context Augmentation: Providing the enterprise-grade context and constraints agents need to be truly effective.

Our team operates across global hubs in Austin, Bochum, Dubai, Geneva, London, Singapore, Tokyo, and Washington D.C. We move with a mindset we call CODE:

Committed to our customers and community.

Obsessed with quality.

Deliberate in our decisions.

Effective as one team.

With over $400M in revenue and profitable, fast-paced growth, we are building the backbone of the AI software revolution. If you’re hungry to have an impact, want to build at a fast pace, and ready to work at the forefront of AI, we want to hear from you.

Position description

The primary goal of the Information Security team is to earn deep trust with our rapidly growing customer base by relentlessly safeguarding Sonar products and the supporting cloud platforms, while consistently demonstrating that Sonar meets demanding, industry‑leading security standards.

You will champion security by design, partnering with product, platform, and infrastructure engineering teams so that our products and cloud platforms are imagined, built, and operated to Sonar’s high security bar.

What you will do:

-

Shape secure products and cloud architecture

Partner with product and engineering teams from the earliest design stages to build secure, resilient solutions by design.

Review product architectures and AWS environments, ensuring security requirements meaningfully inform technical decisions and final designs.

Lead security assurance and improvement

Deliver high-impact initiatives from the strategic security plan, from evaluating new approaches to deploying modern security tools and capabilities across the organization.

Plan and manage independent security assessments, penetration tests, and red-team exercises; translate findings into practical improvements and customer-facing trust artifacts.

Investigate complex product and internal security findings, identify root causes, and help teams implement durable remediation.

Strengthen customer trust and incident readiness

Lead the investigation and resolution of customer security concerns with rigor and empathy, using each engagement to reinforce confidence in our security program.

Serve as a security subject-matter expert during incidents, helping teams understand, contain, and learn from emerging threats. Occasional on-call participation may be required.

Anticipate threats and scale the security program

Monitor and interpret threat intelligence, turning changes in the threat landscape into prioritized risks and actionable recommendations.

Continuously improve and automate security processes, increasing the quality, speed, and visibility of information that informs the security strategy.

Experience and qualifications:

Secure product and cloud architecture

Extensive experience with application and cloud architectures, predominantly AWS, and a strong interest in how modern cloud patterns can strengthen or weaken security.

Extensive experience conducting application security assessments, including code review and evaluation of authentication and authorization designs.

Experience assessing and securing AI and agentic AI capabilities, with the curiosity to experiment, learn, and help define emerging best practices.

Experience applying threat-modeling approaches, such as STRIDE, to improve design discussions and identify risks early.

Security assurance and remediation

Experience with penetration testing, red-team engagements, and bug-bounty programs, with an attacker mindset focused on protecting what matters most.

Experience investigating and managing vulnerabilities, from triage and prioritization through to remediation and organizational learning.

Threat awareness and security automation

Practical experience using AI to automate repeatable security work, along with enthusiasm for building small tools and experiments that make security teams faster and more effective.

Familiarity with Azure, GCP, and Google Workspace is a plus, as is the appetite to learn new platforms and ecosystems as Sonar evolves.

Additional comments:

This role is based in Geneva, Switzerland. We are unable to consider candidates unwilling to be in Geneva, but we are willing to relocate the right candidate.

We value diversity, equity, and inclusion:

At Sonar, we believe that our diversity is our strength. We are a global company that values and respects different backgrounds, perspectives, and cultures. We are committed to fostering a diverse and inclusive work environment where everyone feels valued and empowered to contribute their best. We are proud to be an equal opportunity employer and welcome all qualified applicants, regardless of race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.

If you need any accommodation, please reach out to us at hiring@sonarsource.com. 

All offers of employment at Sonar are contingent upon the results of a comprehensive background check and reference verification conducted before the start date. 

Applications that are submitted through agencies or third party recruiters will not be considered.

Source: Sonarsource careers (Lever)

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