Application Security Engineer

OpenKrill; United States; Remote; USD 120,000 - 190,000; Full time

Job summary

VGS is seeking an Application Security Engineer to partner with Security and Engineering to build a developer-centric security program. You will shape Secure SDLC, automate guardrails in CI/CD, scale our private bug bounty, and cultivate a Security Champions network across a globally distributed team.

You will lead threat modeling, perform threat modeling and reviews for Java and Python microservices, and push security excellence across the engineering org.

Qualifications

• 3-5+ years in Application Security or secure software development.
• Proven hands-on security assessments for Java/Python.
• Experience integrating SAST/DAST tools into CI/CD.
• Experience managing bug bounty programs and security metrics.
• Knowledge of STRIDE or equivalent threat modeling frameworks.

Responsibilities

• Automate security controls in CI/CD pipelines (SAST/DAST/SCA).
• Define and drive Secure SDLC processes and threat modeling practices.
• Lead private bug bounty programs, triage reports, and track MTTR metrics.
• Conduct threat modeling and code reviews for microservices in Java/Python.
• Develop secure coding training and foster Security Champions network.
• Coordinate appsec reviews and security culture with engineering teams.

Skills

AppSec experience

Secure SDLC

Threat modeling

Cross-team collaboration

Security tooling & automation

Education

Bachelor's degree

Tools

GitHub Advanced Security

ZAP

Burp Suite

Veracode

Semgrep

Job description

About VGS

VGS is building the trust infrastructure for a new era of commerce. As commerce becomes agentic, payments are increasing dramatically in volume, speed, and complexity, and the companies driving that shift need a foundation they can fully trust.

That’s where VGS comes in. We’re the world’s leader in payment tokenization, trusted by the most innovative AI and Fortune 500 companies, merchants, banks, and fintechs to power modern payments and agentic commerce. We store more than 9 billion tokens and process more than 10 billion monthly interactions, touching a third of all e-commerce. That scale isn’t incidental. It’s why leading companies embed our universal token vault and credential management platform directly into their stack, taming the complexity of payment data so they can move faster.

Come build the platform that enables modern payments for the world’s largest companies. We’re helping businesses unlock new possibilities in an industry that never stops moving. And that takes exceptional people.

About the Role

As an Application Security Engineer, you will partner directly across Security and Engineering to build a friction-free, developer-centric security program. You will shape our Secure SDLC, automate security guardrails in our CI/CD pipelines, scale our private bug bounty program, and foster a strong culture of security champions across a globally distributed team.

• Automate Security Controls: Integrate proactive security tooling (SAST, DAST, SCA) directly into CI/CD pipelines (GitHub/GitLab) to catch vulnerabilities before code hits production.
• Define & Drive Secure SDLC: Design, communicate, and maintain developer-friendly SDLC processes, frameworks, and threat modeling practices (e.g., STRIDE).
• Manage Bug Bounty & Triage: Spearhead our private bug bounty program-tracking spends, triaging reports, and lowering Mean Time to Mitigation (MTTM).
• Build Engineering Capability: Share best practices through secure coding training and cultivate a Security Champions network across Engineering.
• Lead AppSec Reviews: Conduct threat models and code reviews for Java and Python microservices.
• Amplify Security Culture: Partner with external communications to author technical blogs, manage vulnerability disclosures, and showcase VGS’s security engineering.

What You Bring

• AppSec Experience: 3-5+ years of dedicated experience in Application Security and/or full stack development, with proven experience .
• Technical Depth: Practical background conducting secure code assessments for Java and Python applications.
• Tooling & Automation: Deep familiarity integrating SAST/DAST tools (e.g., GitHub Advanced Security, ZAP/BURP, Synopsys/Veracode, Semgrep and similar tools) into modern CI/CD systems.
• Vulnerability & Program Management: Hands-on experience operating bug bounty programs and setting program metrics/KPIs.
• Threat Modeling: Practical experience applying frameworks like STRIDE to complex systems.
• Collaborative Mindset: Exceptional communication skills with a track record of building trust across engineering teams.

Nice to Have:

• BA/BS degree
• A knack for out-of-the-box thinking that thrives in a fast-paced startup environment
• Prior experience in cloud-native, high-growth, or pre-IPO fintech startups.
• Hands-on experience with AWS security controls and cloud infrastructure.
• Comfortable navigating fully remote, globally distributed work environments.'

We’re looking for passionate professionals who take pride in their craft and want to help grow a team tackling some of the most critical problems in payments. People who thrive here are curious by nature, unafraid of hard problems, and motivated by the chance to build something that matters at scale.

If you’re driven to make a meaningful impact, work at the leading edge of payment technology, and grow your career alongside a team that values ownership, collaboration, and continuous learning, you’ll feel right at home at VGS.