Staff Software Engineer, OTA Services

The role

You will design and own the over-the-air update system for NodeZero across thousands of customer deployments. This hands-on staff-level role involves writing production code, producing architecture designs, and mentoring P4 engineers.

What you will do

• Design and own the over-the-air update system including delivery protocol, version negotiation, and rollout orchestration
• Own systems that track the version state of every NodeZero deployment
• Design safe rollout strategies like phased rollouts and canary deployments
• Design delivery mechanisms for constrained or air-gapped environments
• Own OTA system reliability end-to-end and participate in on-call for delivery failures
• Mentor P4 engineers through design review, code review, and technical pairing

Required qualifications

• 8+ years of professional software engineering experience with deep specialization in distributed systems, remote update systems, or fleet management infrastructure
• Deep understanding of remote update system design
• Experience designing rollout strategies for software deployed across heterogeneous, customer-managed environments
• Strong proficiency in Go, Python, or Rust
• Experience building software that operates in constrained or air-gapped environments
• Deep understanding of Kubernetes
• Experience with container image distribution: OCI artifacts, image manifests, layer caching, and registry protocol
• Strong understanding of mTLS, certificate lifecycle, and secure channel establishment
• Track record of setting engineering standards
• Ability to produce clear architecture documents and drive technical decisions
• Experience mentoring mid-level engineers through design review and code review
• Minimum 25Mbps consumer grade broadband connection

Nice to have

• Experience with Kubernetes operators or controller patterns
• Background in cybersecurity or experience building software for regulated or high-security environments
• Familiarity with Fleet or similar open-source fleet management tools
• Experience with signed artifact delivery and chain-of-custody verification end-to-end

Benefits

• Health, vision & dental care for you and your family
• Flexible vacation policy
• Generous parental leave
• Remote work

About the company

Horizon3 is a fast-growing, remote cybersecurity company dedicated to enabling organizations to proactively find, fix and verify exploitable attack vectors. Their flagship product is the NodeZero platform.