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About the Role

Lead the application security strategy and implementation for Decagon AI's conversational platform. You will partner with engineering teams to build security directly into our AI-powered applications, ensuring protection against application-layer threats while maintaining performance and reliability. This role offers the opportunity to apply deep application security expertise to AI systems and shape security practices across our rapidly growing engineering organization.

Responsibilities

Design and implement application security controls across our AI agent platform, including secure coding practices, threat modeling, and vulnerability management.
Collaborate closely with product engineering teams to integrate security throughout the software development lifecycle, from design, coding, PR, and deployment.
Establish application security testing programs including static analysis (SAST), dynamic analysis (DAST), and interactive testing (IAST) tailored for AI applications.
Lead security code reviews and architecture assessments for new features, with special focus on AI model integration points and customer data handling.
Build security tooling and automation to enable developers to identify and remediate vulnerabilities quickly while maintaining development velocity.
Respond to security incidents involving application vulnerabilities, coordinating remediation efforts and post-incident improvements.

Requirements

3-5 years of hands-on application security engineering experience.
Expertise in secure software development practices, including threat modeling, secure code review, and vulnerability assessment.
Strong software engineering background with ability to review code across multiple languages and frameworks commonly used in AI/ML applications.
Experience implementing application security testing tools and integrating security into CI/CD pipelines.
Knowledge of OWASP Top 10, common application vulnerabilities, and modern application security frameworks.
Proven track record working with engineering teams to remediate security findings while balancing security and business requirements.
Experience securing AI/ML applications, including prompt injection, model extraction, and adversarial input protections.
Background with large-scale, multi-tenant SaaS applications handling sensitive customer data.
Familiarity with Google Cloud application security services and container security best practices.
Knowledge of enterprise compliance requirements (SOC 2, ISO 27001, GDPR) from an application security perspective.
Experience with modern security tools like Semgrep, CodeQL, Cursor Bug Bot, XBOW, or similar.

Skills

Application Security
Secure Coding Practices
Threat Modeling
Vulnerability Management
Software Development Lifecycle Integration
SAST
DAST
IAST
Security Code Review
Architecture Assessment
AI Model Integration
Customer Data Handling
Security Tooling and Automation
Incident Response
Remediation
AI/ML Application Security
Prompt Injection
Model Extraction
Adversarial Input Protections
SaaS Security
Google Cloud Security Services
Container Security
Enterprise Compliance
SOC 2
ISO 27001
GDPR
Semgrep
CodeQL
Cursor Bug Bot
XBOW

Location

In-office

Work Type

Full-time

Experience Level

3-5 years

Salary/Compensations

$200K – $330K + Offers Equity

Benefits

Take what you need vacation policy
Medical, Dental, and Vision benefits for you and your family
Life Insurance and Disability Benefits
Retirement Plan (e.g., 401K, pension)
Parental Leave
Fertility and family building benefits through Carrot
Daily lunches and snacks in the office

About the Company

Decagon is the leading conversational AI platform empowering every brand to deliver concierge customer experiences.
Our technology enables industry-defining enterprises like Avis Budget Group, Block’s Cash App and Square, Chime, Oura Health, and Hunter Douglas to deploy AI agents that power personalized, deeply satisfying interactions across voice, chat, email, SMS, and every other channel.
We’re building a future where customer experiences are being redefined from support tickets and hold music to faster resolutions, richer conversations, and deeper relationships.
We’re proud to be backed by world-class investors who share that vision, including a16z, Accel, Bain Capital Ventures, Coatue, and Index Ventures, along with many others.
We’re an in-office company, driven by a shared commitment to excellence and velocity.
Our values — Just Get It Done, Invent What Customers Want, Winner’s Mindset, and The Polymath Principle — shape how we work and grow as a team.