Platform Security Engineer (3+ years)

About Phinite.ai
Phinite.ai is an early-stage company building a platform for running AI agents in production, with evaluation, guardrails, governance and observability built in. We work with enterprise customers, so security is central to what we ship.

About the role
We're looking for a Security Engineer who enjoys owning security problems end to end and building security into the product and infrastructure instead of treating it as a checklist.

You'll work across our backend, cloud infrastructure, applications, identity systems, data and developer platform. This role goes beyond running scanners and writing reports. You'll identify real risks, design practical defenses, investigate incidents and work directly with engineers to make the whole system more secure, with meaningful ownership over security across the product and engineering stack.

What you'll do
• Own security initiatives from threat identification and design through implementation, monitoring and continuous improvement
• Run threat modeling for current products, services, APIs,



infrastructure and major architectural changes
• Find and fix vulnerabilities across applications, infrastructure, cloud environments, dependencies, containers and CI/CD pipelines
• Work with backend and infrastructure engineers to build security in from the start
• Design and improve authentication, authorization, identity, session management, secrets management and access control
• Review APIs and distributed services for access control, data exposure, injection, abuse and other risks
• Secure cloud infrastructure, networking, containers, Kubernetes, databases, queues, storage and internal services
• Build controls that hold up in real conditions: compromised credentials, privilege escalation, exposed secrets, compromised dependencies and misconfiguration
• Run vulnerability management: prioritization, remediation, verification and tracking
• Improve security monitoring, detection, alertin

📌 Platform Security Engineer (India)
🏢 Phinite.ai
📍 India