Full job description

TripleLift is the Creative SSP powered by TL Spark, our agentic intelligence layer. We orchestrate creative, supply, audience, and measurement into a single outcome-driven system across the open internet, retail media, and CTV. Our platform enables brands and agencies to drive measurable performance while helping publishers maximize yield and preserve high-quality user experiences.

Overview

The Senior Application Security Engineer plays a critical role in driving secure software development and application security maturity within TripleLift's Engineering and Security organization, directly influencing how we protect our advertising platforms and the trust our publishers and advertisers place in us. In this position, you will partner closely with Engineering, Platform, Cloud Infrastructure, and Security teams to shape secure coding practices, application security tooling, vulnerability remediation, and CI/CD security, ensuring security is embedded into how we design, build, deploy, and operate our products.This is an exciting opportunity for someone who wants to build and scale an application security program at a company operating at the center of a rapidly evolving, high-stakes ad-tech landscape, while contributing meaningfully to the long-term security posture and resilience of the organization.

Responsibilities

Play a critical role in building and maintaining a global security compliance program based on NIST CSF.
Scale application security by developing automated security testing utilizing enterprise SAST, DAST, and code-review tools.
Champion SDLC to promote secure application development and infrastructure deployment and facilitate secure coding remediation activities.
Automate security testing in CI/CD pipelines to detect vulnerabilities early, including building and maintaining the pipeline integrations themselves.
Administer and drive adoption of GitHub Advanced Security (GHAS) : code scanning, secret scanning, and dependency review across engineering repositories.
Participate in threat modeling and design/architecture spec reviews to identify and mitigate security risks early in the SDLC.
Coordinate with stakeholders to develop and implement a vulnerability management program and to perform threat-hunting activities.
Own and conduct internal penetration testing and vulnerability assessments of applications and infrastructure, and validate findings from third-party pentest engagements.
Monitor and respond to application-layer security threats like API abuses, business logic flaws, and common web vulnerabilities.

Overview

Responsibilities

Education & Requirements