Senior Network and Cybersecurity Engineer

Fuelcell Energy; Danbury (CT); Hybrid; USD 113,000 - 126,000; Full time

Benefits offered by this job

Medical benefits

Dental benefits

Vision benefits

Company-paid life/disability insurance

401(k) plan

Employee stock purchase plan

Generous paid leave

Job summary

FuelCell Energy, Inc. in Danbury, CT is seeking a Senior Network and Cybersecurity Engineer to own the company’s network and security across on-prem and Azure environments.

This hands-on role requires deep networking expertise, strong Azure experience, and the ability to implement Zero Trust and least-privilege controls while collaborating with IT, OT, and operations teams to protect production systems. The position is hybrid, onsite three days per week initially, with remote days as needed.

Qualifications

• Five+ years of progressive experience in network engineering and cybersecurity.
• Three+ years designing, securing, and operating Microsoft Azure in a production enterprise environment (required).
• Experience in manufacturing, energy, utility, or other industrial environments, including exposure to OT networks, is preferred.
• Strong communication and documentation skills.

Responsibilities

• Own the design, implementation, and support of the company’s network infrastructure, including LAN, WAN, wireless, firewalls, VPN, and connectivity to Azure.
• Develop and maintain a network roadmap that keeps connectivity reliable, secure, and scalable across all company facilities.
• Serve as the senior escalation point for complex network, connectivity, and security issues.
• Design and secure Azure networking and hybrid connectivity, applying Zero Trust and least-privilege principles.
• Implement and continuously improve security controls across Azure and the network, partnering with the cybersecurity team on identity, monitoring, and threat detection.
• Support secure segmentation and remote access between IT and OT environments, working with operations and engineering to protect the availability and safety of production systems.
• Lead infrastructure and security projects from planning through delivery.
• Manage patching and vulnerability remediation for network and security infrastructure, and support incident response, disaster recovery, and audit activities (including SOX).
• Maintain clear documentation and change control, and share knowledge with IT, OT, and cybersecurity teammates.

Skills

Network engineering

Cybersecurity

Azure

Zero Trust

Security controls

Documentation

PowerShell / Python

OT security awareness

Education

Bachelor’s degree in information technology, cybersecurity, computer science, engineering (or related)

Certifications such as Microsoft AZ-500 or AZ-700, CCNP, CISSP, or GICSP (a plus)

Tools

Entra ID

Defender for Cloud

Microsoft Sentinel

Claroty

Nozomi Networks

Dragos

Bicep

Terraform

PowerShell

Python

Job description

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Senior Network and Cybersecurity Engineer

Location: Danbury, CT, US, 06810

FuelCell Energy is redefining how the world produces and uses power. As a leading clean energy technology company, we're helping businesses, communities, utilities, and data centers meet growing energy demands with reliable, always-on power solutions.

With nearly a gigawatt of fuel cell platforms deployed worldwide, we're accelerating the transition to a more resilient energy future. Join a team of innovators, problem-solvers, and industry pioneers who are tackling some of the world's most complex energy challenges while shaping the next generation of sustainable power.

Your work here won't just power facilities. It will help power the future.

The pay for this position ranges from $113000- $126000.

Overview

We are seeking a highly capable Senior Network and Cybersecurity Engineer to join our Global Infrastructure team and take ownership of FuelCell Energy’s network and its security. This is a hybrid position that requires the individual to be onsite in Danbury, CT three days per week and work remotely two days (four days onsite and one day remote during the first 90 days). Onsite presence is critical to effectively collaborate with cross-functional teams and support our operational systems.

This is a hands‑on, highly technical role that blends network engineering and cybersecurity. The Senior Network and Cybersecurity Engineer will design, secure, and support our network across corporate offices, manufacturing facilities, Microsoft Azure, and Operational Technology (OT) environments. We’re looking for someone with deep network expertise, strong hands‑on Azure experience, and the judgment to apply sound security practices wherever the business needs them.

Responsibilities:

Network Engineering & Architecture

• Own the design, implementation, and support of the company’s network infrastructure, including LAN, WAN, wireless, firewalls, VPN, and connectivity to Azure.
• Develop and maintain a network roadmap that keeps connectivity reliable, secure, and scalable across all company facilities.
• Serve as the senior escalation point for complex network, connectivity, and security issues.

Azure & Security Engineering

• Design and secure Azure networking and hybrid connectivity, applying Zero Trust and least-privilege principles.
• Implement and continuously improve security controls across Azure and the network, partnering with the cybersecurity team on identity, monitoring, and threat detection.
• Support secure segmentation and remote access between IT and OT environments, working with operations and engineering to protect the availability and safety of production systems.

Operations & Collaboration

• Lead infrastructure and security projects from planning through delivery.
• Manage patching and vulnerability remediation for network and security infrastructure, and support incident response, disaster recovery, and audit activities (including SOX).
• Maintain clear documentation and change control, and share knowledge with IT, OT, and cybersecurity teammates.

Qualifications:

Education:

Bachelor’s Degree in information technology, cybersecurity, computer science, engineering, or related discipline. Extensive experience will be considered in lieu of a degree.

• Certifications: Relevant certifications such as Microsoft AZ-500 or AZ-700, CCNP, CISSP, or GICSP are a plus.

Experience:

• Five or more years of progressive experience in network engineering and cybersecurity.
• Three or more years of hands‑on experience designing, securing, and operating Microsoft Azure in a production enterprise environment (required).
• Experience in manufacturing, energy, utility, or other industrial environments, including exposure to OT networks, is preferred.

Candidate must have:

• Network engineering across LAN, WAN, wireless, and cloud, including routing and switching, next‑generation firewalls, VPNs, and secure network segmentation.
• Microsoft Azure networking and security, including virtual networks, hybrid connectivity, and native network security controls.
• Hands‑on troubleshooting of complex issues across network, cloud, and security layers.

Working Knowledge Of

• Microsoft security tools such as Entra ID, Defender for Cloud, and Microsoft Sentinel.
• OT/ICS network security concepts, such as IEC 62443 and the Purdue Model.
• Security frameworks such as NIST CSF and CIS Controls.

Professional Skills

• Strong communication skills, including clear documentation and the ability to explain technical topics to non‑technical stakeholders.
• Strong problem‑solving skills and a track record of delivering complex technical projects.
• Familiarity with Infrastructure as Code (e.g., Bicep or Terraform) and scripting (e.g., PowerShell or Python).
• Familiarity with OT security monitoring platforms (e.g., Microsoft Defender for IoT, Claroty, Nozomi Networks, or Dragos).
• Exposure to Zero Trust Network Access (ZTNA) platforms and SOX or other compliance audits.

Physical Requirements/Working Conditions:

• General work is performed in office, manufacturing, and warehouse environments, utilizing a computer and standard office equipment.
• Hybrid schedule: 4 days in the office and 1 day working from home during the first 90 days; 3 days in the office and 2 days working from home thereafter.
• Required to work onsite at the Torrington facility one day every two weeks or as needed.
• Occasional after‑hours, weekend, or on‑call work may be required to support maintenance windows, OT production schedules, and security incidents.
• Ability to lift, carry, or move equipment weighing up to 25–35 lbs.
• Ability to bend, crouch, or reach to access equipment and workspace areas as needed for technical support.
• Ability to wear required Personal Protective Equipment (PPE) as required and as designated based on the work location.
• Ability to walk or stand for short periods while performing onsite support.
• Ability to sit for extended periods while working on a computer or performing monitoring tasks.

Equal Opportunity Employer

FuelCell Energy is an equal-opportunity employer committed to an inclusive and safe work environment for people of all backgrounds.

We offer a competitive compensation package as well as comprehensive benefits including medical, dental, vision, company‑paid life/disability insurance, 401(k) plan, employee stock purchase plan, and generous paid leave.

The successful candidate is required to complete a drug screen, criminal background check, and employment and education verification.

FuelCell Energy, Inc. is committed to ensuring that its application process provides an equal employment opportunity to all U.S. job seekers, including individuals with disabilities. If you believe you need a reasonable accommodation in order to search for a job opening or to submit an application, please send an email with your resume to [e-mail] or contact us by calling 860-496-2222. Please indicate the specifics of the assistance needed.

NOTE: This dedicated phone line and email address are designed exclusively to assist disabled job seekers whose disability prevents them from being able to apply online. Only messages left for this purpose will be acknowledged. A response to your request may take up to two business days.

No agency submissions please. Resumes submitted to any FuelCell Energy employee without a current, signed and valid contract in place with the FuelCell Energy Recruiting team for this position will become the property of FuelCell Energy and no agency fees will be paid.

We thank all candidates for their interest in a career with FuelCell Energy. However, only those candidates selected for an interview will be contacted.

Nearest Major Market: Bridgeport

Nearest Secondary Market: Danbury