Build and own security infrastructure and core systems for an AI platform handling sensitive workflows. Requires 2-7 years experience with Python/Go/TypeScript, cloud environments, and production security tooling.
200k – 350k/yr
On-site2+ YOESecurity Engineering
About the role
What You’ll Work On
Build systems that identify and respond to real security events across our stack
Replace manual security workflows with programmatic, scalable solutions
Strengthen our cloud and production environments (GCP/AWS, containers, networking)
Design and enforce access control systems across internal teams, experts, and customers
Integrate security checks directly into development workflows without slowing shipping speed
Own incident handling systems and processes from detection through resolution
Secure surfaces unique to AI systems, including data flows and model interaction layers
Beyond Security
Develop human-in-the-loop systems used in AI training and evaluation
Contribute to core infrastructure and internal tooling used across the company
Ship features across the stack that directly impact customers and model performance
What We’re Looking For
You’ve built internal tools or systems to solve security problems—not just configured existing products
Strong programming ability in Python, Go, or TypeScript
Experience working with cloud environments (IAM, networking, containers)
Ability to identify vulnerabilities directly in code and system design
Experience creating or maintaining signal-based monitoring and alerting systems
Comfortable owning production issues when they arise
Able to move fluidly between security work and general engineering
2-7 years building software or security systems
Nice to Have
Background in fast-scaling startups or high-output engineering teams
Exposure to AI systems, data pipelines, or model evaluation workflows
Familiarity with offensive security techniques
Experience building tools that other engineers depend on
Evidence of building and shipping systems from zero to production
Develop and maintain security capabilities for Plaid's infrastructure and sensitive data access. This role involves building and owning security services, consulting with product engineers, and assisting with incident response and security awareness programs.
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