Principal Embedded Software Engineer

Principal Embedded Software Engineer Expert Technical Solutions is seeking a skilled Principal Embedded Software Engineer for one of our premier, industry leading clients in Indianapolis, IN 46256. This person will be responsible for the development of software for the Connectivity module to connect with water heating products and HVAC products, including requirements, design, qualification, and life cycle support. Will work to implement and extend a common connectivity and reusable architecture strategy within our client’s environment. This is a key position on the electronic controls team within the organization, providing advanced technologies and systems solutions for core products and other business units. This is a Permanent (Hybrid – 4 days onsite in Indianapolis, IN 46256) opportunity offering excellent pay, benefits, and growth potential. Primary Duties and Responsibilities: Work with systems engineering, product engineering, marketing, manufacturing, and others to capture electronic controls requirements for specific HVAC and water heating applications. Work collaboratively with 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 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, test, 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, 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 company as requested in technical societies and keep the company advised of pertinent developments, new concepts, and opportunities Required Qualifications: Bachelor’s degree in computer and electrical engineering, Computer and Electrical Engineering Technology, or Computer Science. Master’s Degree Highly Preferred 7+ years’ experience in developing production software for embedded microprocessor-based controls in assembly and C. Strong experience across the full Software Development Life Cycle (SDLC), including: Requirements elicitation and decomposition (system → software) Architecture and design Implementation and code reviews Verification, validation, and qualification Launch support (manufacturing, field readiness) Sustaining engineering, defect resolution, and field issue support Proven experience developing real-time, multi-threaded embedded systems. Expertise with embedded peripherals and interfaces such as SPI, QSPI, UART, RS485, and Ethernet. Experience with secure embedded platforms, including secure boot chains, image authentication, anti-rollback protection, and secure key handling. Experience supporting firmware update mechanisms (including OTA or field update strategies) across development, launch, and sustaining phases. Experience working closely with cross-functional teams including systems engineering, hardware, product, manufacturing, validation, and service. Strong debugging and failure analysis skills using hardware/software tools (emulators, oscilloscopes, logic analyzers, test instrumentation). Ability to read and interpret schematics, wiring diagrams, and hardware documentation. Experience producing clear software design, requirements, and test documentation to support development and lifecycle maintenance. Experience participating in or leading design reviews, FMEA, DFM/DFT, and technical reviews. Proficiency with version control systems (e.g., Git). Preferred Qualifications: Experience with connectivity technologies and protocols, including: Wireless: BLE, Wi-Fi, Thread, Matter, Amazon Sidewalk Wired/Protocols: BACnet, Modbus, TCP/IP Experience with security features such as Secure Boot, X.509 certificates, TLS, and encrypted file systems. Experience implementing OTA over wireless or cloud-connected systems. Experience with model-based development tools (MATLAB, LabVIEW). Familiarity with statistical methods or Design of Experiments (DOE). Experience supporting connected or IoT-enabled products in consumer or industrial environments. Job Type: Full-time Pay: $125,000.00 - $160,000.00 per year Work Location: Hybrid remote in Indianapolis, IN 46256