Development Engineer – Embedded Software / Firmware (PAGA/PAVA Systems)

Who we are? About Johnson Controls 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. Visit for more information and follow @Johnsoncontrols on social platforms. Why JCI: Asia-Pacific LinkedIn: Career: The Power Behind Your Mission OpenBlue: This is How a Space Comes Alive What will you do? Design and implement C/C++ software for (bare-metal and RTOS) embedded devices to be used in safety related Public Address / General Alarm systems. Design, develop, test, and maintain embedded C / C++ firmware for STM32-based control and communication modules. Implement low-level software for microcontroller peripherals, memory handling, interrupt management, watchdogs, boot behaviour, and hardware abstraction. Support board bring-up, integration, debugging, and validation of new embedded platforms. Development of engineering interpretations of product standards. Create test plans and perform verification and validation activities. Author documentation for software architecture, interface control, test plans. Develop algorithms for digital audio streaming, routing and processing. Implement communication protocols using Ethernet, LonTalk, RS232, RS485 and RS422. Contribute to software quality MISRA C/C++, static analysis, configuration management, code reviews, development of unit and integration tests. Collaborate with the estimation, production, commissioning and projects departments to derive requirements, and time scales for delivery of system solutions. Mentor less experienced engineers. Maintain older product: Defect rectification, bespoke solutions to meet customer requirements, solutions to hardware obsolescence. What we look for? Support the migration of legacy Echelon / CPM5000 communication and control functions to a new embedded architecture. Analyse existing legacy behaviour and develop equivalent or improved implementations on STM32-based platforms. Help define the migration path for LonTalk-related stack behaviour, node communications, and interoperability requirements. Contribute to long-term removal of obsolete components and reduction of platform dependency risk. Integrate firmware with higher-level software modules, communication stacks, diagnostics, and application functions used in PAGA / PAVA systems. Support interaction between physical layer interfaces, node communications, and application-layer functions used for alarm, paging, routing, monitoring, and supervision. Ensure effective transfer of amplifier and field-device fault information back to system nodes and controllers. Audio & Life-Safety Functional Support Support embedded functions related to 100V line audio systems, amplifier supervision, fault monitoring, and status reporting. Develop software mechanisms for continuous system health checking, fault detection, and reporting. Support deterministic and reliable behaviour required for critical alarm and public address functions. Verification, Debug & Product Support Investigate and resolve issues arising from development, manufacturing, commissioning, and field service. Use structured testing, logging, and diagnostic methods to validate firmware performance and robustness. Support regression testing and change control for product releases. Cross-Functional Collaboration Work closely with hardware engineers, project engineers, manufacturing, test, and service teams. Support design reviews, system architecture activities, and issue resolution across the product lifecycle. Contribute to documentation required for product introduction, controlled change, validation, and support. What we offer: We offer an exciting and challenging position. Joining us you will become part of a leading global multi-industrial corporation defined by its stimulating work environment and job satisfaction. In addition, we offer outstanding career development opportunities which will stretch your abilities and channel your talents Diversity & Inclusion Our dedication to diversity and inclusion starts with our values. We lead with integrity and purpose, focusing on the future and aligning with our customers’ vision for success. Our High-Performance Culture ensures that we have the best talent that is highly engaged and eager to innovate. Our D&I mission elevates each employee’s responsibility to contribute to our culture. It’s through these contributions that we’ll drive the mindsets and behaviors we need to power our customers’ missions. You have the power. You have the voice. You have the culture in your hands.