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Principal Software Engineer, InfraEng Platform Team

Anduril - Seattle, WA, United States - In-office - posted 2026-09-29

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Salary: USD 253,000 - 336,000 / annual

Anduril Industries is a defense technology company transforming U.S. and allied military capabilities through advanced technology. The company's Lattice OS is an AI-powered operating system that aggregates thousands of data streams into a real-time 3D command and control center. The Infrastructure Engineering team builds and operates the foundational systems Anduril depends on, including wired and wireless connectivity, private backbone, private and public cloud, and the systems running on them. The InfraEng Platform Team owns the central hub exposing all infrastructure capabilities: the console, CLI, and API used across the company. You will be the first software engineer on the InfraEng Platform Team, joining at a critical inflection point. A small codebase exists; part of your early work is evaluating whether it is the right foundation to extend or whether to rebuild from scratch. From there, you will set the architecture, engineering standards, and delivery practices the team builds on. This is a hands-on role where your fingerprints will be on everything the team ships. Key responsibilities include: - Evaluate the existing codebase and set technical direction (keep, extend, or rebuild) - Design and build the hub's core APIs, services, and data models exposing infrastructure as self-service across AWS, Azure, and on-prem - Decide where control planes and data planes separate, nest, or should not interact; document reasoning for extensibility - Define contracts and patterns partner teams use to plug into the hub, then help them adopt those patterns - Build a single identity and authorization layer (RBAC and ABAC) with complete audit trails for every platform action - Ship backend services and user-facing surfaces (console, CLI, API) in Go, Python, Java, or the right tool for the job - Turn common infrastructure requests into bounded self-service actions that reduce ticket volume - Establish CI/CD pipelines, source control practices, and deployment safety controls for a multi-contributor codebase - Own what you build in production: observability, on-call, incident response, and postmortems - Partner with connectivity, backbone, cloud, and product teams on shared interfaces; influence roadmaps without direct authority - Mentor engineers who join the team after you REQUIREMENTS: - 10+ years of software engineering experience, including building and operating platform or infrastructure software at scale - Strong proficiency in Go, Python, or Java, or equivalent languages suited to systems and platform work - Deep understanding of control plane and data plane design: desired state, reconciliation, failure isolation, and blast radius - Strong hands-on experience with AWS or equivalent major cloud providers, across compute, networking, IAM, storage, and managed Kubernetes - Strong grounding in containers and ephemeral compute (Docker, Kubernetes, immutable infrastructure patterns, or equivalent) - Experience shipping both backend services and user-facing surfaces (console, CLI, or API) for large and varied user bases - Track record of designing CI/CD pipelines and branching/release strategies that keep deployments safe with many contributors - Depth below the application layer in networking, systems, or cloud, with willingness to learn the others - High ownership and operational excellence; you run what you build, measure it, and fix root causes - Proven ability to influence senior stakeholders and peer teams without authority - Must be eligible to obtain and maintain a US Secret Security clearance PREFERRED QUALIFICATIONS: - Experience building or integrating with identity and authorization systems (OIDC, SAML, OPA, Cedar, or equivalent) - Experience implementing RBAC or ABAC models within a product or system - Experience with Azure, on-prem, or equivalent environments, including cross-provider abstractions - Experience with Kubernetes controllers, operators, Crossplane, or equivalent infrastructure abstraction frameworks - Infrastructure as code at scale with Terraform, OpenTofu, or equivalent - Familiarity with enterprise networking or backbone infrastructure and how platforms expose it to users - Experience in regulated environments (FedRAMP, DoD IL levels, CMMC, or equivalent) - Front-end experience with TypeScript and React, or equivalent, for console development

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