OT Security Architect

At Bloom Energy, our vision for a world powered by clean, reliable, and affordable energy is more than just a dream—we’re making it reality.

For over two decades, we’ve been at the forefront of the global energy transition, pioneering solutions that empower critical industries to thrive in a rapidly digitizing, energy-intensive world. From revolutionizing power for AI-driven data centers to ensuring resilience for hospitals, electric grids, manufacturing facilities, and utilities, our solid oxide fuel cell (SOFC) and solid oxide electrolyzer (SOEC) technologies are redefining what’s possible by delivering energy abundance for all. With more than 30,000 fuel cell modules deployed worldwide, we are the trusted partner for Fortune 100 companies and innovators alike. Our cutting-edge solutions enable unparalleled “time-to-power” capabilities, reliability, and sustainability, ensuring our customers remain ahead in a world where soaring energy demand and intensifying energy scarcity are rapidly becoming the new norm.

At Bloom, we thrive on collaboration, bold thinking, and relentless innovation. We believe that, together, we can create a brighter, more sustainable future while tackling the most pressing challenges of the 21st century.

We are looking for an OT Security Architect to join our team in one of today’s most exciting technologies.  This role will report to Chief Security Officer based in Newark, Delaware. This is a fully on-site, 5 days in office role. 

Role and Responsibilities

• Deploy, configure, and tune OT security platforms across manufacturing sites endpoint protection, inline IPS, asset discovery, secure remote access, media scanning kiosks, and PLC backup including rulesets, allowlists, exclusions, and detection tuning on production assets.
• Own operational health of deployed tooling: agent coverage, sensor health, license utilization, upgrades, and version currency.
• Design and implement IT/OT convergence controls: OT DMZ at Level 3.5, brokered access, data flows, identity and directory integration, patching paths, and monitoring feeds.
• Implement defense-in-depth segmentation aligned to the Purdue model and ISA/IEC 62443 zone-and-conduit design, VLANs and rulesets, micro segmentation, and virtual patching for legacy assets partnering with Network Engineering on switching, routing, firewalls, wireless, IIoT, edge, and WAN.
• Run OT asset discovery and integrate telemetry into enterprise SIEM, EDR/XDR, NDR, and vulnerability management; maintain inventory and drive end-of-life OS remediation.
• Implement and test PLC/HMI backup, versioning, and golden-image recovery; support OT incident response and recovery, and lead POCs and production rollouts for new OT security technologies.

Skills and Experience

• Bachelor’s degree in Cybersecurity, Computer Science, Electrical Engineering, Industrial Engineering, Computer Engineering, or a related technical discipline, or equivalent hands-on experience. 
• 8+ years of cyber security, network, or infrastructure engineering experience, including 4+ years hands-on OT/ICS cyber security in production industrial or manufacturing environments. 
• Demonstrated hands-on deployment and operation of OT security tooling at multiple sites. 
• Strategy-only, advisory-only, or assessment-only backgrounds will not be considered. 

Preferred Qualifications and Technologies

• Secure Remote Access: brokered vendor and engineer access to Levels 0–3, session recording, MFA, jump hosts, browser isolation 
• Malware Scanning Kiosks: USB and vendor media inspection at plant entry points, scan engines, sanitization, and media workflows 
• OT Endpoint Security: OT-native anti-malware and application allows listing on HMIs, engineering workstations, and legacy or unsupported OS 
• OT Backup: PLC/HMI and production equipment configuration backup, version control, and tested golden image restore on production assets 
• Network Segmentation: OT DMZ at Level 3.5, zone-and-conduit design, VLAN-to-firewall migration, micro segmentation, inline IPS and virtual patching 
• OT Vulnerability Management: passive and active OT asset discovery, risk-based prioritization, compensating controls for non-patchable assets 
• Purdue Model: applied Levels 0–5 data-flow design and enforcement of trust boundaries across live plants 
• TXOne, Claroty, Nozomi Networks, Dragos, Armis, KASM, Dispel, Salvador Technologies, OPSWAT, Octoplant, Cisco Cyber Vision / ISE / Catalyst IE, or equivalent OT security platforms. 
• Enterprise security integration: SIEM, SOAR, XDR/EDR, NDR, PAM, and vulnerability management platforms. 
• Windows and Linux server administration, Active Directory, virtualization, storage, backup, and hybrid cloud connectivity. 
• Layer 2/3 switching and routing, VLANs, wireless, firewall rule design, NAT, VPN, and WAN connectivity. 
• Scripting and automation (PowerShell, Python) for deployment, configuration management, and reporting at scale. 
• PLC platforms (Siemens, Rockwell, Schneider, GE, ABB), SCADA, and HMI systems.
• Industrial protocols: Modbus, DNP3, Profinet, OPC/OPC-UA, EtherNet/IP, BACnet. 
• Applied ISA/IEC 62443 and NIST SP 800-82: implementing controls, audit support, risk assessment, threat intelligence, and vulnerability management. 
• Multi-site, multi-country manufacturing support experience; MES, historian, LIMS, and quality systems exposure. 
• ERC CIP audit or utility customer cyber security requirement support. 
• Certifications: GICSP, GRID, GCIP, GPPA, ISA/IEC 62443 Fundamentals or Specialist, CISSP, CCNP or equivalent. 
• Ability to work safely on production floors, onsite in Delaware, with travel up to 25% and off-hours work during maintenance windows. 

Bloom Energy is an equal opportunity employer and makes employment decisions on the basis of merit. We are committed to compliance with all applicable laws providing equal employment opportunities. All qualified applicants will receive consideration for employment without regard to race, sex, color, religion, national origin, protected veteran status, or on the basis of disability. Bloom Energy makes reasonable accommodations, consistent with applicable laws, for the known physical or mental limitations of an otherwise qualified applicant or employee with a disability, who can perform the essential job functions, unless undue hardship would result.

At Bloom Energy, we are committed to supporting the well-being of our employees and their families. Our comprehensive benefits package for eligible employees includes competitive Medical, Dental, and Vision plans with a large employer contribution, a 401(k) Retirement Plan with company match, generous Mental Health Support services, Legal services, virtual Physical Therapy access, and Fertility & Family Forming benefits.

Bloom Energy is committed to fair and equitable compensation practices. The total compensation for this position includes standard company benefits and is based on various factors including, but not limited to, relevant skills and experience.

Salary Ranges:

$130,400.00 - $187,600.00