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.

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