Sustaining Test Engineer Jobs in Tamuning, GU (NOW HIRING)

About Us

Johnson Controls, a global leader in thermal management, mission-critical building systems, energy efficiency, and decarbonization, helps customers use energy more productively, reduce carbon emissions, and operate with the precision and resilience required in rapidly expanding industries such as data centers, healthcare, pharmaceuticals, advanced manufacturing, and higher education.

For more than 140 years, Johnson Controls has delivered performance where it really matters. Backed by advanced technology, lifecycle services and an industry-leading field organization, we elevate customer performance, turn goals into real-world results and help move society forward.

***Relocation assistance may be provided for this role ***

***To be considered for this role, candidates must be a U.S. Citizen or a U.S. Permanent Resident (Green Card holder) ***

What you will do:

Johnson Controls is seeking a Controls Engineer II to support the design, development, testing, and implementation of control system software for industrial refrigeration and HVAC equipment.

You will join a collaborative engineering team delivering advanced controls for chillers, air handlers, and smart building products that optimize cooling/heating performance and energy efficiency. This role offers exposure to state-of-the-art testing facilities and the opportunity to contribute to next-generation cooling solutions supporting decarbonization, data center efficiency, AI-enabled manufacturing, and sustainability initiatives.

How you will do it:

• Contribute as part of a growing engineering team addressing new control system needs in decarbonization and data center cooling
• Design, implement, test, and support control software for chillers and air handling units used in data centers, large facilities, and industrial environments
• Develop reliable and maintainable code using MATLAB/Simulink, applying model-based design principles for embedded systems
• Apply control theory fundamentals (modeling, simulation, statistics, data acquisition) to develop robust and efficient control solutions
• Analyze system and test data to support controller development, performance optimization, and product validation
• Collaborate with cross-functional teams including mechanical, electrical, and systems engineers throughout product development activities
• Participate in laboratory and field testing activities to validate control performance and troubleshoot issues
• Support technical reviews and contribute to continuous improvement of controls development processes

What we look for:

Required:

• BS in Mechanical Engineering, Electrical Engineering, Software Engineering, Systems Engineering, or a related engineering discipline; MS preferred
• 4-6 years of controls, automation, embedded systems, or related engineering experience, or an MS degree with relevant industry experience
• Experience developing control algorithms and software using MATLAB/Simulink
• Working knowledge of model-based design principles for embedded systems
• Familiarity with control systems concepts, modeling, simulation, and data analysis
• Experience supporting product development, validation testing, and troubleshooting efforts
• Strong written and verbal communication skills
• Ability to work effectively in a team-oriented, fast-paced engineering environment
• Working ability to read and understand embedded C/C++ code and use scripting tools such as Python or MATLAB

SALARY: $76,000 - $100,000 (Salary to be determined by the education, experience, knowledge, skills, and abilities of the applicant, internal equity, and alignment with market data.) This position includes a competitive benefits package. The posted salary range reflects the target compensation for this role. However, we recognize that exceptional candidates may bring unique skills and experiences that exceed the typical profile. If you believe your background warrants consideration beyond the stated range, we encourage you to apply. To support an efficient and fair hiring process, we may use technology assisted tools, including artificial intelligence (AI), to help identify and evaluate candidates. All hiring decisions are ultimately made by human reviewers. For details, please visit the About Us tab on the Johnson Controls Careers site at About Johnson Controls Careers.

Johnson Controls International plc. is an equal employment opportunity and affirmative action employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, age, protected veteran status, genetic information, sexual orientation, gender identity, status as a qualified individual with a disability or any other characteristic protected by law. To view more information about your equal opportunity and non-discrimination rights as a candidate, visit EEO is the Law. If you are an individual with a disability and you require an accommodation during the application process, please visit here.