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Helion is a fusion power company based in Everett, WA, on a mission to build the world's first commercial fusion power plant. The company has raised $1.5 billion from investors including Sam Altman, SoftBank, and Thrive Capital, and has achieved record-breaking plasma temperatures of 150 million degrees Celsius with its Polaris prototype.
You will join a small, tight-knit infrastructure team responsible for keeping Helion's operations securely connected as the company scales toward commercial fusion power. This is a hands-on, builder role split roughly evenly between reactive support and proactive project work. You'll be a trusted technical partner to HR, Legal, security operations, and business teams, with a seat at the table on access governance and risk decisions. You'll support identity, security, and application systems that the entire organization depends on, including automation, integration, onboarding, migrations, and decommissioning.
Key responsibilities include administering and supporting automation for the identity lifecycle (joiner, mover, leaver) for employees, contractors, and service accounts using SSO, MFA, conditional access, SCIM/API-based provisioning, and PowerShell. You'll manage Entra ID, Active Directory, and Microsoft 365 identity services, enforcing least-privilege access and driving access reviews through remediation. You'll detect and respond to security events using Microsoft Sentinel, partnering with managed detection and response teams on escalations and log source tuning. You'll administer Microsoft 365 and Atlassian platforms, build integrations with REST APIs, webhooks, and middleware, and review new applications and AI tools for security before enterprise deployment. You'll respond to end-user issues and action requests in Jira Service Management related to identity, access, enterprise apps, and security. You'll also produce process and procedure documentation and drive process improvement through effective stakeholder collaboration.
The role reports to the Manager of Identity and Access Management and Enterprise Applications and is based onsite in Seattle, WA, with one remote day per week.
Requirements:
- 8+ years of systems administration experience spanning identity and access management, enterprise applications, and cybersecurity
- Deep hands-on experience with user lifecycle management, SSO (SAML/OIDC), and SCIM provisioning in the Microsoft ecosystem; Atlassian, privileged identity management, and Purview experience a plus
- Advanced PowerShell scripting, including Microsoft Graph, with Python or JavaScript for automation and API integrations
- Hands-on experience with SIEM/MDR platforms, security monitoring, and incident response, plus working knowledge of PKI; audit support, AI tool governance, and networking fundamentals a plus
- Self-directed communicator who balances ticket work against project deadlines without needing direction, and can support after-hours incident response when needed
