Senior Application Security Engineer (all genders)

Distribusion Technologies is a leading global ground transportation marketplace, connecting bus, rail, and ferry operators with major online retailers. We are seeking a Senior Application Security Engineer to build our AppSec practice from the ground up in a greenfield environment, directly impacting our secure development lifecycle and protecting high-traffic partner-facing APIs.

Key responsibilities

• Lead threat modeling and secure design reviews for high-risk changes, partner integrations, and payment flows.
• Implement and enforce security gates in GitLab CI/CD, including SAST, SCA, and DAST, while minimizing developer friction.
• Act as the primary technical owner for triaging and prioritizing findings from bug bounties, pentests, and automated scanners.
• Collaborate with the DevOps team to implement GCP organizational policies, IAM least-privilege architectures, and WAF configurations.
• Establish a security-champions network across engineering squads to scale code reviews effectively.

Requirements

• 5+ years of experience in Application Security or a strong background in software engineering and web pentesting.
• Proficiency in reading and writing production code in languages such as Python, Go, TypeScript, or Ruby.
• Deep knowledge of web and API security, including OAuth2, JWT, tenant isolation, and common vulnerabilities like IDOR and XSS.
• Strong cloud security fundamentals, specifically within GCP environments, focusing on secrets hygiene and public exposure.
• Ability to prioritize real-world risks and communicate complex security concepts clearly to engineering teams and leadership.

What we offer

• The opportunity to join a fast-paced, high-growth travel tech company with a flat organizational structure.
• Full ownership and responsibility over the security architecture of a global B2B platform.
• Collaboration with an international, talented team of professionals in a mission-driven environment.
• A fully remote work environment with the flexibility to contribute to our global expansion.