IT Systems Engineer (Europe)
Liam Horne is an English-born, Canadian-raised software entrepreneur and engineer who has spent his career building Ethereum scaling technology, from state channels to Optimism and Base, and is now building Tempo, a payments-focused L1 blockchain.
About Liam Horne
Liam Horne studied Computer Science at the University of Waterloo before dropping out to start a startup. He spent most of his twenties working on Ethereum technology, beginning with scaling payments via state channels (building projects like Web3Torrent), then pivoting to build Optimism, one of the defining projects of the Layer 2 rollup ecosystem, and co-launching Base with Coinbase on the OP Stack. Around 2023 he shifted focus to stablecoins, writing and working on projects such as World Chain, Stable, and Build Canada: Crypto after observing that Tether on Tron dominated real-world stablecoin usage despite Ethereum scaling efforts. This work led him to Tempo, a payments-first infrastructure L1 blockchain project he is currently building and hiring for. He is also an active startup investor, having invested in companies including Othership, QA Wolf, Daimo, Erebor, Stable, Farcaster, Ambrook, Mercantile, Software Applications Incorporated, Conduit, Splits, Axiom, OpenSea, Agora, and Flex.
Skills
About the Role
You'll own and build Tempo's corporate IT infrastructure — identity, device management, endpoint security, and the automation that ties it all together. This is a hands-on engineering role, not a help desk seat. You'll bring software-engineering rigor to IT systems and help secure a company operating at the frontier of crypto.
Requirements
- 4+ years in IT engineering roles
- Hands-on Okta administration: SSO, SCIM, SAML/OIDC integrations, lifecycle policies, Okta Workflows. Understands HRIS-as-source-of-truth (Rippling or similar)
- Production Jamf Pro experience: PreStage enrollment, configuration profiles, software update management, certificate distribution. macOS-first
- Deployed and operated an EDR platform (SentinelOne or comparable) — policy tuning, MDM deployment, alert triage
- Strong scripting (Python/Bash/Go preferred), comfortable with REST APIs, webhooks, JSON, auth flows, and event-driven workflows
- Git-based config management, CI/CD pipelines (GitHub Actions), Terraform or equivalent
- Solid grasp of DNS, certificates/PKI, ZTNA (Tailscale or similar), and modern access control models
Responsibilities
- Architect and automate the full identity lifecycle — HRIS → Okta → SaaS apps — eliminating manual provisioning and off boarding gaps
- Complete and maintain SSO/SCIM integrations across the entire SaaS stack
- Own Jamf Pro end to end: PreStage enrollment, configuration profiles, software updates, certificate distribution
- Deploy and tune endpoint security (SentinelOne) — policy management, MDM-driven deployment, alert triage
- Expand SIEM coverage and write detection/alerting rules with a detection-as-code approach
- Build toward infrastructure-as-code management of all IT tooling (Terraform, GitHub Actions)
- Resolve hard identity, device, and access escalations that get past first-line support
- Drive SOC 2 readiness — unified audit trails across identity, device, and security systems