Software Engineer III (Electronics)

The Software Engineer III (Electronics) is responsible for the development of software for embedded microcontrollers. Software development is focused on electronic controls for HVAC and water heating products including requirements, design, qualification, and life cycle support. Will work to implement and extend a common controls architecture strategy within Rheem. This is a key position on the electronic controls team within Rheem’s Advanced Technology Integration organization, providing advanced technologies and systems solutions for Rheem’s Water Heating, Air Conditioning, and Raypak business units.This position will serve Rheem North America Division, located in Roswell, GA, Lewisville, TX or Indianapolis, IN (Hybrid). This role follows our hybrid work arrangement, with team members working in the office Monday through Thursday and remotely on Fridays. At Rheem, we engineer products for life. For home life. For work life. For the life of the planet we all share. Backed by over 100 years of expertise, we’re passionate about product innovation and boldly committed to sustainability. Our full line of global air and water solutions deliver reliable performance, comfort and energy savings for residential and commercial applications worldwide. From engineers to accountants, sales professionals to support experts, Rheem depends on people to power our innovations. Join Rheem and help shape the future of products that impact lives—every day. Our Behavior Based Values set us apart: Listening to Understand – Open mind, learning from others, accepting feedback, embracing the objectiveContributing Respectfully - Sharing opinions, valuing ideas, sharing opposing perspectives with respectThinking Creatively – Applying creativity, seeking improvements, understanding from the customers’ lensActing with Responsibility – Owning decisions and actions, acting with integrity, embracing accountability Rheem is an Equal Opportunity Employer. Rheem encourages all qualified candidates to apply, including those of any race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. The job description above has been designed to indicate the general nature and level of work performed by employees within this classification. It is not designed to contain or be interpreted as a comprehensive inventory of all duties, responsibilities and qualifications required of employees assigned to this job. Equivalent combination of education, experience, and skills may supplement above minimum job requirements. For U.S. Based jobs, please note that Rheem is unable to hire candidates to be employed in the following states: Alaska, District of Columbia, Hawaii, Idaho, Mississippi, Montana, New Mexico, North Dakota, or Vermont. Rheem and its subsidiaries do not accept unsolicited resumes from recruiters or employment agencies. In the absence of an executed Recruitment Services Agreement, there will be no obligation to any referral compensation or recruiter fee. Bachelor’s degree in Engineering, Computer and Electrical Engineering, Computer Science, or related field.5+ years of experience in IT and/or engineering-related fields.5+ years of C/C++ software engineering experience in multi-threaded, real-time embedded systems Experience in the developing of production software for embedded microprocessor-based controls in assembly and C Expert-level programming experience in assembly and C Language Experience with multiple communications media and protocols including, but not limited to, wired, wireless, optic, CAN, BACnet, Modbus, TCP/IP Experience with serial communication like I2C, UART, SPI, and Modbus communication Working experience with various microcontrollers like Renesas, STMicro, Cypress, etc Experience in Secure Boot, X509, TLS, Encrypted File Systems Experience in presenting technical information to groups Experience working successfully with multiple departments such as R&D, marketing, manufacturing, service engineering, suppliers, and customers Familiarity with test-driven design methodologies to develop automated unit and system tests of software Technical knowledge of product design and failure analysis Working knowledge of statistical methods or Design-of-Experiments (DOE) Experience with electronic analysis methodologies and associated instrumentation Proficiency in Microsoft Word, Excel, and PowerPoint Demonstrated ability to work well with others in a team environment High technical aptitude Able to work with cross-functional teams (e.g., product managers, engineers, business teams) and external subject matter experts Passionate about building and owning innovative, customer-facing services/products.Great presentation and communication skills Proficient computer skills and in-depth knowledge of relevant software such as MS Office Suite.Working experience with the version control tool like Git and its integration with the remote server, eg.GitHub, GitLab, etc.Knowledge and experience with UL 60730, including software development, documentation, and certification approval process to meet UL safety requirements.Design, prototyping, and development experience with the control system with PID control.HOW TO STAND OUT:Master’s degree in Computer or Electrical engineering.HVAC / Water Heating industry experience.As a leader at Rheem, how you achieve results is as important as the results you achieve. While LEADING OTHERS, you will be expected to demonstrate the following competencies and behaviors:Aligning Performance for SuccessApplying Business KnowledgeBuilding TalentBuilding Trusted RelationshipsCommunicating with ImpactCustomer-OrientationDelegating TasksExecuting/Leading the TeamFacilitating ChangeFostering Relationships/ Emotional IntelligenceInfluencingProblem Solving & Decision MakingSupporting InnovationEquivalent combination of education, experience, and skills may supplement above minimum job requirements.#LI-FM1#LI-HybridWork with systems engineering, product engineering, marketing, manufacturing, and others to capture electronic control requirements for specific HVAC and water heating applications.Work collaboratively with the Lead Software and Systems Architecture Engineer to develop and extend software architecture and design for software applications.Develop software for embedded applications, following team conventions for design and documentation Provide a comprehensive self-review and test of the software Work with systems and product engineers to support the validation of the software in the product application, with a focus on identifying and resolving any software, hardware, or system anomalies Work with controls contract manufacturers, products manufacturing engineering, and service on the implementation and validation of software features to support construction and field support Support the development of tools for PC, handheld, and other devices that could be used for development, testing, manufacturing, service, or other applications Work with cross-functional teams through direct interactions and team meetings in developing and translating new concepts into applications.Develop performance and qualification test methods, coordinate the implementation of experiments, and evaluate test results.Lead and participate in formal design reviews of electronic controls requirements, schematics, layouts, and software, as well as FMEA, DFM, DFT, and other related analyses.Prepare and support the review and release of formal requirements, design, and qualification documentation.Continue to develop professionally.Represent the company as requested in technical societies and keep the company advised of pertinent developments, new concepts, and opportunities.Performs other duties as assigned.Full timePosting Date: 2026-09-01