[Remote] Principal Software Engineer, User Management

Note: The job is a remote job and is open to candidates in USA. Arcadia is dedicated to improving healthcare outcomes through better data and smarter technology. They are seeking a Principal Software Engineer to lead the rearchitecture and implementation of a robust User Management system, focusing on authentication, authorization, and user provisioning across their applications.ResponsibilitiesLeading the rearchitecture and modernization of the User Management platform — authentication (Auth0, SAML 2.0, OAuth2, JWT), authorization, access control, and user provisioning across Arcadia productsBuilding backend services and APIs across a polyglot stack (TypeScript/NestJS, Go, Python) supporting secure, multi-tenant access modelsOwning Auth0 tenant management, cross-application SSO, and session infrastructure — including SAML integrations, identity provider relationships, and Hydra session managementManaging cloud infrastructure through Infrastructure-as-Code (Terraform/Terragrunt) and AWS-native services (Lambda, API Gateway, DynamoDB, Cognito, SNS)Defining SLOs and designing telemetry for key features, ensuring robust monitoring, canary, and standard rollout strategies — with shared ownership of on-call reliabilityPartnering with cross-functional stakeholders — including Product, Security, and SRE — to ensure alignment between technical execution and organizational prioritiesProviding leadership, mentorship, and clarity in complex, ambiguous problem spacesSkills10+ years of professional full-stack software engineering experience with a focus on backend and distributed systemsProven success building and scaling identity and access management systems, including authentication (SAML 2.0, OAuth2, JWT) and fine-grained authorization frameworksExpertise in TypeScript, Node.js/NestJS, and modern React/Angular development for full stack deliveryHands-on experience with agentic AI-assisted development — actively using agentic coding tools, context-engineered environments, and AI-augmented workflows, with a track record of independently shipping AI-native tooling and defining how teams leverage AI strategicallyStrong command of cloud architecture (AWS preferred) and IaC practices with TerraformDeep experience with relational and NoSQL data stores, designing for vertical & horizontal scalability and high availabilityDemonstrated ability to own complex systems from design through rollout and post-release operation, with strong attention to quality and reliabilityStrong communication, collaboration, and architectural reasoning skills — able to work across engineering, product, SRE, and security teams while balancing pragmatism with long-term technical healthExperience modernizing identity and access systems or other critical, cross-cutting platform servicesFamiliarity with API gateway design, centralized JWT validation, and event-driven architecturesExposure to data streaming or message-driven systems (Kafka, Kinesis, SNS/SQS)Experience in healthcare technology, HIPAA compliance, or other regulated data environmentsPolyglot engineering experience — comfortable working across multiple languages and frameworks (e.g., Python, Java, Go) when solving complex distributed system challengesExperience building internal developer tooling, custom agents, or platform-level AI integrations that go beyond individual productivity — shaping how an engineering organization adopts and scales AI-assisted developmentBenefitsFlexible Time Off (~22-day company average)Competitive compensation, comprehensive benefitsA collaborative, remote-friendly engineering culture that values innovation, curiosity, and technical excellenceA team that is actively investing in AI-augmented engineering practices — you won't just use these tools, you'll help define how the organization adopts themCompany OverviewHealthcare data analytics platform It was founded in 2007, and is headquartered in Boston, Massachusetts, USA, with a workforce of 201-500 employees. Its website is https://arcadia.io.Company H1B SponsorshipArcadia has a track record of offering H1B sponsorships, with 1 in 2026, 1 in 2023, 1 in 2020. Please note that this does not guarantee sponsorship for this specific role.