Senior Application Security Engineer

Our cybersecurity and information security teams at IDEXX contribute to a more resilient, adaptable, and security‑aware enterprise prepared to navigate today’s evolving threat landscape. We have complex, multi‑dimensional programs across the organization that support all the technology needed to deliver products and solutions to customers – enabling them to focus on delivering high quality patient care.

IDEXX is seeking a Senior Application Security Engineer to join our Product & Application Security team protecting applications across development teams. This role combines hands‑on security testing with strategic partnership – you will conduct security assessments, perform threat modeling, and work directly with developers to build security into products from the start.

You will support security activities ranging from SAST/DAST analysis to API security testing, collaborate with our Security Champions to scale secure development practices, and contribute to the maturation of our Secure Software Development Lifecycle (SSDLC). This position reports to the Senior Manager of Product & Application Security and operates within a team that prioritizes partnership over enforcement, using OWASP SAMM as our operational framework.

• Conduct security architecture reviews and threat modeling sessions with development teams using STRIDE methodology
• Perform application security assessments across our security verification service offerings including SAST/DAST analysis, manual code review, API security testing, authentication/authorization testing, and vulnerability validation
• Execute hands‑on security testing of applications, APIs, mobile applications, agentic solutions, and cloud‑native services
• Analyze and validate security findings from automated security tools and provide actionable remediation guidance

• Build and maintain security verification tooling, scripts, and automation to improve assessment efficiency and coverage
• Develop custom security testing scripts and proof‑of‑concept exploits to validate vulnerabilities
• Contribute to security tooling integration within CI/CD pipelines
• Create reusable security patterns, code snippets, and reference implementations for common security controls

• Contribute to security training and enablement sessions on secure coding practices, common vulnerabilities, and threat modeling
• Provide just‑in‑time security guidance during sprint planning, design reviews, and code reviews as requested
• Translate security findings into developer‑friendly remediation guidance with code examples and implementation patterns

• Contribute to SSDLC policy development and security requirements documentation grounded in OWASP SAMM practices
• Guide the evolution of the SSDLC to address emerging risks and controls introduced by AI‑assisted development
• Support the standardization of security assessment intake, execution, and reporting processes via Service Now
• Maintain security verification documentation including testing methodologies, checklists, and runbooks
• Track and report on security assessment metrics including coverage, finding severity distribution, and remediation timelines

• 4‑6 years of hands‑on experience in application security with demonstrable technical skills
• Strong grasp of threat modeling methodologies (STRIDE preferred) and risk assessment
• Location:
  
  We are looking for someone who can drive distance to our HQ in Westbrook, Maine where we offer a flexible hybrid requirement of only 8 days per month. We are also open to those in New Hampshire or Massachusetts who are able to be on‑site a lesser amount, possibly 1 to 4 times a month.
• Strong understanding of common web application vulnerabilities (OWASP Top 10, SANS Top 25) and secure coding practices
• Practical experience conducting security assessments including SAST/DAST analysis, manual code review, and penetration testing
• Proficiency with application security testing tools
• Solid understanding of at least two programming languages sufficient to review code for security issues
• Experience with API security…