Sr. Security Software Engineer, Internal Identity & Access Management

Pinterest is a platform that inspires creativity and helps users plan memorable experiences. They are seeking a Senior Security Software Engineer to shape identity and authorization controls, design and maintain critical software infrastructure, and collaborate across teams to enhance their IAM capabilities.

Responsibilities:

• Help shape our identity and authorization controls for users, services and AI Agents
• Design, implement, and maintain mission-critical software that will help us deliver robust IAM infrastructure and libraries to our customers
• Leverage Agentic AI to improve systems and least privilege, while applying judgment and verification to ensure correctness and quality
• Improve code quality and system performance using AI Coding Agents
• Collaborate with a variety of teams to build performant and resilient AAA (Authentication, Authorization, Auditing) platform controls into various high-traffic services including our AI Agents, online/offline data platforms, databases, service mesh (Envoy) and other critical infrastructure components
• Represent the I2AM team across the Security Organization and with our X-org partners, including Networking, Data Platform, Cloud Platform, Agent Platform and product teams
• Work with and mentor more junior engineers on the I2AM team

Requirements:

• Bachelor's degree in Computer Science, Engineering, or a related field, or equivalent experience
• 4-5+ years of software development experience
• A history of building & operating large scale distributed systems
• Past experience influencing technical architecture and roadmap adoption while working across other teams
• Proven track record of critical evaluation and verification of AI-assisted work (e.g., testing, source-checking, data validation, peer review)
• Demonstrated ability to prototype and use AI tooling to improve reliability and quality of day-to-day workflow and system performance
• High integrity and ownership: you protect sensitive data, avoid over-reliance on AI, and remain accountable for final decisions and deliverables
• Experience in some of the following areas is a strong plus: Infrastructure provisioning tools (Terraform, Puppet, etc.)
• Identity, Account Security, Authentication/Authorization (OAuth, SAML, RBAC) protocols
• AWS or other public cloud infrastructure, containerization such as Kubernetes
• Familiarity with networking protocols (Application layer)