Controls Engineer III

Controls Engineer III

Location: Onsite in Henderson, NV or in Mansfield, TX

Employment Status: Full Time | Direct Hire

Compensation : $90,000 - $120,000 per year + Annual Bonus Eligibility

Travel : Field based role - up to 30% travel

On Call : May participate in on-call rotation based on location and project requirements


Who We Are
Thermo Systems is a global, full-service control systems integration partner delivering premier class automation solutions across the Energy, Life Sciences, and Mission Critical markets.


Guided by The Thermo Way , we are unified, dynamic, and committed to delivering excellence. Our culture is grounded in three core principles:


Employee Success investing in our people and their growth

Customer Success delivering reliable, high-quality solutions

Financial Strength operating with discipline and long-term focus


We believe strong teams, trusted partnerships, and technical excellence drive sustainable success.


The Opportunity


The Controls Systems Engineer III designs, integrates, documents, and supports automation and control systems for mission-critical facilities, with a focus on hyperscale and enterprise data centers. Approximately 70% of the role is office-based engineering and design, with 30% dedicated to site support, commissioning, troubleshooting, and hardware/network validation.


The CSE3 leads assigned engineering scopes, serves as a technical resource for customers and project teams, and mentors junior engineers. The ideal candidate brings strong PLC and industrial networking expertise, an investigative mindset, and the ability to work effectively across engineering, project, mechanical, electrical, commissioning, and site teams.


What You'll Do

• Design PLC, HMI/SCADA, instrumentation, and industrial network systems for mission-critical applications.
• Develop network architectures, drawings, hardware specifications, control narratives, Sequence of Operations (SOO), system reports, and other customer-facing documentation.
• Program, modify, test, and troubleshoot Rockwell/Allen-Bradley PLCs using Studio 5000, including online debugging and field troubleshooting.
• Develop and support HMI/SCADA systems using Inductive Automation Ignition.
• Interpret P&IDs, mechanical and electrical schematics, equipment data sheets, and control system documentation to develop practical engineering solutions.
• Lead and support FAT, startup, commissioning, hardware validation, I/O verification, network verification, and system integration activities.
• Travel to project sites during critical delivery phases to troubleshoot controls, networking, and integration issues and support commissioning teams.
• Lead assigned engineering tasks and small-to-mid-sized project scopes, identifying technical risks and delivering solutions on schedule.
• Collaborate with project managers, engineers, subcontractors, commissioning teams, customers, and trade partners throughout project execution.
• Serve as a technical escalation point and mentor for junior controls engineers.
• Maintain engineering quality, documentation accuracy, and compliance with Thermo Systems QMS and project requirements.

What We're Looking For

Education & Experience

• Bachelor's degree in Electrical Engineering, Mechanical Engineering, Computer Science, or a related technical discipline.
• 4+ years of experience in controls engineering, industrial automation, system integration, commissioning, or a related field.
• Mission-critical or data center experience preferred.
• Experience leading engineering tasks or project scopes from design through commissioning.

Technical Skills

• Strong Rockwell/Allen-Bradley PLC experience, including Studio 5000 programming, debugging, and troubleshooting.
• Hands-on experience with Inductive Automation Ignition.
• Strong understanding of industrial control systems, networking, and system integration.
• Experience specifying industrial control hardware and developing network architectures.
• Ability to interpret P&IDs, mechanical/electrical schematics, control drawings, and technical specifications.
• Experience with FAT, startup, commissioning, hardware validation, and field troubleshooting.
• Strong technical writing skills with the ability to develop control narratives, SOOs, reports, and other engineering documentation.
• Strong analytical, investigative, and root-cause troubleshooting skills.
• Willingness to travel to project sites during critical project phases.

Professional Attributes

• Detail-oriented, analytical, and comfortable investigating complex technical issues.
• Strong written and verbal communication skills with the ability to work directly with customers and cross-functional teams.
• Able to work independently, manage multiple priorities, and meet project deadlines.
• Willing and able to mentor junior engineers and serve as a technical resource for project teams.
• Committed to quality, safety, accountability, and continuous improvement.

What You'll Get

• Competitive compensation with annual bonus opportunity.
• 401(k) with company match.
• Comprehensive medical, dental, and vision coverage.
• Paid time off and sick leave.
• Tuition reimbursement and professional credential support.
• Technical training and professional development opportunities.
• Exposure to complex, high-impact automation projects in mission-critical environments.
• A collaborative culture built on integrity, accountability, and teamwork.

Learn more at


Work Environment & Physical Requirements
The physical and environmental demands described here are representative of those required to perform the essential functions of this role. Reasonable accommodations may be made to enable individuals with disabilities to perform essential functions.


Equal Employment Opportunity
Thermo Systems provides equal employment opportunities (EEO) to all employees and applicants without regard to race, color, religion, sex, national origin, age, disability, genetics, or any other protected status.


Disclaimer
This job description outlines the general nature and level of work expected. Responsibilities may evolve based on business needs.