Senior Software Engineer –Application Development (C / C++)

ohnson Controls is the global leader for smart, healthy and sustainable buildings. At Johnson Controls, we’ve been making buildings smarter since 1885, and our capabilities, depth of innovation experience, and global reach have been growing ever since. Today, we offer the world’s largest portfolio of building products, technologies, software, and services; we put that portfolio to work to transform the environments where people live, work, learn and play.

This is where Johnson Controls comes in, helping drive the outcomes that matter most. Through a full range of systems and digital solutions, we make your buildings smarter. A smarter building is safer, more comfortable, more efficient, and, ultimately, more sustainable. Most important, smarter buildings let you focus more intensely on your unique mission. Better for your people. Better for your bottom line. Better for the planet. We’re helping to create a healthy planet with solutions that decrease energy use, reduce waste and make carbon neutrality a reality. Sustainability is a top priority for our company.

We committed to invest 75 percent of new product development R&D in climate-related innovation to develop sustainable products and services. We take sustainability seriously. Achieving net zero carbon emissions before 2040 is just one of our commitments to making the world a better place.

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Job Summary

We are looking for a C/C++ Software Engineer to design, develop, and maintain platform applications used in Building Automation Systems (BAS).

The role involves working on native applications, embedded services, protocol integrations, and platform-level features running on Linux-based and Windows server.

The candidate will collaborate with architects, system engineers, QA, and cross-functional teams to deliver high-performance, scalable, and reliable applications

Key Responsibilities

Application Development

• Design, develop, and enhance native applications using C and C++
• Build and maintain embedded and server-side components running on Linux and Windows
• Implement high-performance, multithreaded services with strict reliability and uptime requirements
• Develop modular, reusable, and testable components
• Ensure compliance with coding standards, memory safety, and performance guidelines
• Debug complex multithreaded issues such as memory leaks, deadlocks, race conditions
• Perform performance profiling and optimization
• Analyze core dumps and runtime issues in production-like environments
• Follow Agile/Scrum development practices
• Participate in design reviews, code reviews, and sprint planning
• Collaborate with QA for defect analysis and resolution
• Maintain technical documentation and design notes
• Implement and enhance BACnet-based integrations (BACnet/IP, MS/TP, services, properties)
• Work with network protocols such as TCP/IP, UDP, IPv4/IPv6

Required Skills & Qualifications

• Strong proficiency in C and C++
• Strong understanding of memory management, multithreading and synchronization, object-oriented design and patterns
• Hands-on experience with Linux-based development environments
• Experience in embedded or systems software development

Platform & Tools

• Visual Studio
• GCC / Make / CMake build systems
• Debugging tools (GDB, Valgrind, core dumps)
• Cross-compilation environments
• Git and CI/CD pipelines
• Networking fundamentals (TCP/IP, UDP, sockets)

Preferred / Nice-to-Have Skills

• BACnet protocols and building automation concepts
• Integration with field devices or control systems
• Experience with BAS products
• Docker / containerized services
• Security best practices for embedded and platform applications
• Diagnostics, logging frameworks, and health monitoring

Education & Experience

• Bachelor’s or Master’s degree in Computer Science, Electronics, or related field
• 5–10+ years of hands-on experience in C/C++ application or embedded development
• Large, long-lived codebase experience preferred

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

Industry-leading Building Automation platforms, Large-scale, mission-critical systems exposure, Global architecture and platform collaboration, Career growth in system architecture, protocol engineering, and platform design.