Principal Engineer, PlatformOS

About PlatformOS

The PlatformOS team is the foundational infrastructure and software backbone enabling engineering teams to build, deploy, and operate services at scale. We provide developer-facing platforms such as core infra, workflow engine, service templates, CI/CD pipelines, observability, tooling, agent platform (LLMs + autonomous workflows) and guardrails.
In this role you will help elevate PlatformOS from a strong engineering org to a truly enabling, scalable, platform-led capability.

What You’ll Do

• Define and lead the technical roadmap for PlatformOS that includes building core infrastructure, service templates, CI/CD pipelines, deployment tooling, observability/monitoring, guardrails, agent platform, chat UI/LLM integration.
• Architect, design and develop complex distributed services, tooling and APIs that empower other engineering teams to ship safely and quickly.
• Integrate PlatformOS capabilities into a cohesive experience across product and platform teams and evolve data-modeling strategies across multiple domains.
• Co-Lead the development of the agent platform: manage and host large-language models (LLMs), build chat interfaces (OpenWebUI-based), integrate autonomous workflows, and provide developer/self-service tooling.
• Partner with service-teams (across multiple product domains) to understand their needs, remove friction, build consensus, and drive alignment.
• Standardize and unify PlatformOS’s APIs under a cohesive, scalable platform API strategy. Own platform observability, product analytics frameworks, event streaming, schema registries and audit-logging.
• Lead by example. Apply modern software engineering practices (automated testing, blue/green/canary deployments, infrastructure as code, telemetry, reliability)
• Mentor and coach engineers, establish shared ownership models (remove single points of failure), improve review practices, accelerate velocity while preserving correctness.
• Influence engineering culture by promoting the “platform mindset” where teams are enabled rather than dependent, and tooling accelerates rather than bottlenecks
• Act as a senior technical leader within Anduril, collaborate with architecture, security, operations, infra, and business stakeholders

What You Should Have (Required Qualifications)

• 12+ years of software engineering experience in a fast-paced environment (startup or high-velocity delivery context).
• Hands-on experience building production systems (expect to code ~30% of your time). We use Python and TypeScript.
• Strong experience building platforms, infrastructure tooling or distributed services that support other engineering teams.
• Deep architectural knowledge: distributed systems, service architecture, APIs, deployment pipelines, observability, reliability.
• Proven experience in data modeling and API design across domains.
• Familiarity building or integrating AI/agent systems, working with LLMs, conversational UI/UX, or autonomous workflows.
• Excellent communication skills, able to influence senior stakeholders, translate ambiguous requirements and build cross-team alignment.
• U.S. Person status (due to export-control / DoD environment)

Preferred Qualifications

• Experience with high-scale distributed systems (multi-region cloud or multi-cluster), service-oriented architecture.
• Past experience building internal developer platforms, service templates, developer-tooling portals or self-service infrastructure.
• Past experience in defense, autonomy, robotics, or mission-critical systems (helpful but not required).
• Culture fit: bias for action, low ego, able to make pragmatic trade-offs in ambiguous/fast-paced settings (consistent with Anduril culture).