Software Engineer, Identity & Access Management

Software Engineer, Identity & Access Management Hadrian - Manufacturing the Future Hadrian is building autonomous factories that help aerospace and defense companies manufacture rockets, satellites, jets, and ships up to 10x faster and up to 2x cheaper. By combining advanced software, robotics, and full-stack manufacturing, we are reinventing how America produces its most critical parts. We’re accelerating our mission with the launch of Factory 3 in Mesa, Arizona, a 290,000-square-foot facility creating 350 new jobs. We are expanding rapidly to support thousands of future hires, launching Hadrian Maritime to expand into naval production, and introducing a Factory-as-a-Service model that delivers complete systems instead of individual parts. Hadrian is backed by leading investors including T. Rowe Price, Lux Capital, Founders Fund, and Andreessen Horowitz, our fast-growing team is united around reindustrializing American manufacturing for the 21st century and beyond. THE ROLE Hadrian's API Platform is how the outside world connects to our manufacturing systems. Every partner integration, every internal service, and every factory floor system that touches that platform depends on one thing being right: identity. Who is allowed in, what they can do, and how credentials are managed across a complex, multi-cloud, physically distributed environment. As Staff Software Engineer, Identity and Access Management, you will build the security foundation that the API Platform is built on. You will own authentication, authorization, and credential automation across cloud infrastructure, Kubernetes workloads, and factory floor systems — and you will work in close partnership with the API Platform PM to ensure that IAM capabilities are surfaced as first-class developer experiences, not bolted-on compliance requirements. This is not a supporting role. IAM is a product pillar here. You will own the technical layer end to end, set the direction for how it scales, and help define what secure-by-default looks like across everything Hadrian builds. WHAT YOU'LL DO - Design and implement scalable authentication and authorization systems covering both human operators and machine identities across cloud and factory floor environments — serving as the security foundation for the API Platform - Own Hadrian's authentication stack: SSO, MFA, OIDC/SAML integrations, and service-to-service auth across AWS, GCP, and future cloud environments - Build fine-grained access control systems (RBAC/ABAC/ReBAC) that scale across internal engineering teams, factory systems, and external API partners - Develop frameworks, APIs, and CLI tools that automate credential provisioning, rotation, and policy enforcement for both internal teams and external API consumers - Build identity and access models for machine-to-machine communication across factory floor systems, Kubernetes workloads, and cloud services - Partner with Security to ensure IAM systems meet compliance and audit requirements; troubleshoot complex identity and access issues across distributed systems - Work with the API Platform PM to define how IAM capabilities are surfaced as developer-friendly product experiences — for internal engineers and external partners alike - Build tooling, SDKs, and documentation that make it easy to integrate with IAM correctly and hard to do so incorrectly - Set IAM standards across the engineering org and act as the domain expert on access-sensitive architecture decisions WHAT WE'RE LOOKING FOR - 8–12+ years in software engineering, with 3+ years of focused experience in identity, authentication, or authorization systems at scale - Deep, hands-on expertise in modern auth protocols: OAuth 2.0, OpenID Connect (OIDC), SAML, and SCIM - Strong understanding of access control models — RBAC, ABAC, and ReBAC — and the ability to make sound architectural tradeoffs between them - Experience designing IAM systems across multi-cloud environments (AWS, GCP, Azure) - Se ... (truncated, view full listing at source)