Senior Platform & Security Engineer Job

Job Title: Senior Platform & Security Engineer

Job Description

The Automation Operations team is looking for a Senior Platform & Security Engineer to serve as the technical authority for infrastructure, architecture, security, and access across our backend and frontend applications.

This is a hands-on role. You will write code in our services, make security decisions at the implementation level, own the maturity of our database and permission models, and set implementation targets that our R&D DevOps partners build against. Sitting alongside our engineering team as the senior technical voice on infrastructure and security, you will have real decision-making authority. We are early in our platform maturity, and you will be the person who takes us from a working system to a resilient one.

Key Responsibilities (What You'll Do)

• Architecture & Maturity: Own the architecture of our backend and frontend applications, guiding both toward long-term maturity and resilience.
• Hands-on Development: Write production code in Python services with a sharp focus on security, reliability, and architectural soundness.
• Security & Compliance: Partner with InfoSec to implement robust security controls, design access permissions, and systematically reduce our attack surface.
• Database Engineering: Mature PostgreSQL practices, including data modeling, schema design, role management, performance tuning, and recovery.
• Access Control: Establish and enforce best practices for Identity and Access Management (IAM) across all production systems.
• DevOps Collaboration: Define infrastructure implementation targets for the R&D DevOps team and verify delivery against them.
• AWS Migration: Support the ongoing migration of services to AWS, setting target architecture and validating deployment results.
• Code Reviews & Mentorship: Mentor engineers on secure coding and architecture, and review security-relevant code changes across services.
• Reliability & On-Call: Identify root causes of recurring failures to implement lasting fixes. Participate in an infrastructure/security-only on-call rotation.

Desired Candidate Profile (What You'll Bring)

• Experience: 5+ years of hands-on experience in software engineering, platform engineering, or infrastructure roles.
• Core Tech Stack: Strong proficiency in Python (writing production code) and deep experience with PostgreSQL.
• Cloud & Infrastructure: Hands-on expertise in AWS (ECS, RDS, SQS, IAM, API Gateway, Lambda) and Infrastructure as Code (Terraform).
• Containers & Pipelines: Experience with Docker in managed orchestrators (ECS, EKS, K8s) and designing secure CI/CD pipelines.
• Security Practice: Proven track record in code-level security, access control design, and partner collaboration with InfoSec teams.
• Communication: Excellent problem-solving skills and clear communication with both technical and non-engineering stakeholders.

Preferred Qualifications (Nice to Have)

• AI Infrastructure & Agents: Hands-on experience deploying open-source models, operating cloud inference environments, or building production AI agent systems.
• AI Observability: Familiarity with AI evaluation/tracing tools such as LangSmith, Langfuse, Arize Phoenix, or OpenTelemetry.
• Compliance & Frontend: Familiarity with SOC 2, GDPR standards, or frontend experience with React and TypeScript.