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# Application Security Engineer

- **Company:** ACCELERANT LLC
- **Location:** United States (Remote available)
- **Experience:** Expert
- **Salary:** $145,000.0 - $183,000.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Amazon Web Services, Software System Penetration Testing, User Authentication, Cloud Computing, Cloud Computing Security, Computer Programming, Continuous Integration, DevOps, Github, Python (Programming Language), Open Web Application Security, Cloud Services, Zero Trust Network Access, Secure Coding, Tripwire, Software Vulnerability Management, Web Applications, Scripting, Large Language Models, Sonatype, Software Security, Agentic-AI, Rate Limiting, Kubernetes, Data Analytics, Tenable Nessus, Cloudflare, Devsecops, Qualys, Security Orchestration, Automation & Response, Static Application Security Testing, Vulnerability Analysis, Dynamic Application Security Testing
- **Published:** October 29, 2026
- **Apply:** https://www.builtincolorado.com/auth/login?destination=/job/senior-application-security-engineer/11938904

## About the Role

* 5+ years of experience in application security, product security, DevSecOps, or a related discipline.

 * Strong understanding of web application and API security, authentication, authorization, sessions, common attack patterns, and the OWASP Top 10.

 * Experience managing external penetration testing or similar third-party security assessment programs.

 * Experience with vulnerability management and security-scanning tools such as Snyk, Qualys, Trivy, Dependabot, GitHub Advanced Security, or equivalent platforms.

 * Experience integrating security controls into CI/CD pipelines and development workflows.

 * Experience with WAF policy management, API security, virtual patching, filtering, rate limiting, and application perimeter protection.

 * Practical experience with cloud security, preferably AWS and Kubernetes/EKS.

 * Experience with security automation, scripting, or programming, preferably Python.

 * Strong communication and relationship-management skills, with the ability to work effectively with developers, vendors, and control owners.
Nice to Have Skills

 * Experience using AI-enabled security tooling or automation to support vulnerability triage and remediation.

 * Cloudflare Zero Trust and Cloudflare Edge experience.

 * OSCP, OSCP+, or an equivalent security certification.

 * OSCP, OSCP+, or an equivalent security certification is preferred.

## Description

Own and improve application security across applications, APIs, cloud services, and CI/CD pipelines. Manage penetration testing programs, vulnerability remediation, security scanning, WAF and API protections, threat modeling, secure design reviews, and security automation. Partner with development, cloud, compliance, and security teams to remediate critical findings, support audits, improve secure coding, and provide security guidance. The role also involves leveraging AI-enabled tools for vulnerability triage and remediation., The Senior Application Security Engineer is a hands-on role within Production Engineering, responsible for improving the security of Accelerant's applications, APIs, cloud services, and software delivery practices.

The role combines application security engineering, vulnerability management, penetration testing, security automation, application perimeter protection, and close partnership with development squads.

A key responsibility will be turning security findings into completed remediation. The successful candidate will work directly with development squads to prioritize and close Critical and High vulnerabilities, using proactive processes and security AI agents to improve triage, exploitability analysis, remediation guidance, and verification.
Role Expectations

 * Own and improve application security practices across web applications, APIs, services, and CI/CD pipelines.

 * Manage the external penetration testing program, including planning, scoping, scheduling, vendor engagement, communications, findings review, remediation tracking, and retesting.

 * Broker the relationship between development teams and third-party penetration testing providers to ensure clear expectations, effective testing, and timely closure of findings.

 * Work directly with development squads to prioritize and close Critical and High CVEs and other significant application security findings.

 * Build proactive vulnerability remediation processes using approved security AI agents and automation.

 * Operate and improve SAST, DAST, SCA, container, secrets, and vulnerability-scanning capabilities within development workflows.

 * Maintain and continuously improve WAF policies, application perimeter protections, API security policies, filtering, and rate-limiting controls.

 * Support threat modeling, secure design reviews, vulnerability assessments, incident response, and secure coding practices.

 * Work with Compliance to gather and maintain evidence supporting ISO 27001, SOX, and SOC 1/2 requirements.

 * Partner with Development, Architecture, Cloud/DevOps, Compliance, and other Security disciplines to embed security into delivery practices.

 * Provide clear security guidance, documentation, reporting, and education to technical teams.
Technical Skills and Related Experience Required, Own and improve application security across applications, APIs, cloud services, and CI/CD pipelines. Manage penetration testing programs, vulnerability remediation, security scanning, WAF and API protections, threat modeling, secure design reviews, incident response, and compliance evidence. Partner with developers, vendors, cloud teams, and compliance stakeholders to close critical findings and embed secure delivery practices through automation and security AI tooling.
Top Skills: AWSCi/CdCloudflare EdgeCloudflare Zero TrustDastDependabotEksGithub Advanced SecurityKubernetesOwasp Top 10PythonQualysSastScaSnykTrivyWaf
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