Senior Security Engineer OT

Role overview

A senior security engineering role centered on Operational Technology (OT) and Industrial Control Systems (ICS) within an advanced hardware manufacturing organization. The engineer will design and ship foundational defensive controls that protect factory systems, production networks, and the cloud infrastructure supporting them as new lines come online. The work blends hands-on engineering, architectural planning, and cross-team collaboration to safeguard environments that build mission-critical hardware.

Responsibilities

- Lead OT risk assessments, gap analyses, and develop a multi-year security roadmap for industrial environments - Architect and implement defensive controls spanning cloud, production, and corporate infrastructure - Deploy, configure, and maintain security tooling across multiple infrastructure stacks - Build automation, visibility, and threat-detection capabilities in partnership with security and infrastructure teams - Drive security initiatives independently while promoting a security-first mindset across the organization - Partner with factory production teams to review designs and use cases, ensuring environments are secure by default

Requirements

- Experience with routing, switching, and network design principles - Familiarity with zero-trust architecture and segmentation strategies applied to OT networks - Hands-on experience conducting security architecture or design reviews for OT/ICS environments - Proficiency applying threat modeling frameworks to OT contexts, such as MITRE ATT&CK for ICS - Programming experience in one or more general-purpose languages (for example, Python, Go, or Rust) - Track record of developing and operationalizing defensive controls in industrial or corporate production environments - Ability to work autonomously and own complex, multi-stakeholder projects - Prior participation in or support of incident response events - Eligibility to obtain and maintain an active U.S. Top Secret security clearance - Willingness to travel up to 50%

Nice to have

- Familiarity with OT protocols such as Modbus, DNP3, or Ethernet/IP - Experience with ICS/SCADA vendor platforms including Siemens, Rockwell, or Honeywell - Background building bespoke solutions in high-growth, high-complexity network environments - Strong Linux administration skills

Benefits and work setup

- Base salary range of $166,000–$220,000 USD, with equity grants included in the majority of full-time offers - Comprehensive health and recovery benefits for employees and their dependents - Hybrid working pattern with regular on-site presence at factory and production facilities