Senior software developer Jobs in Waterloo, ON

At onsemi, we help improve lives through silicon and software solutions every day. Our intelligent power and sensing technologies solve the world's most complex challenges and lead the way in creating a safer, cleaner, and smarter world. We are developing leading-edge wireless enabled MCUs, DSPs and software that sense and connect the world or help manage personal health through body worn or implantable devices. Our ultra-low power solutions also contribute to a more sustainable future. We invite you to join our innovative team and truly make a difference in people's lives.

The Role:

We are seeking an innovative and creative Principal Software Developer to join our Software Solutions team in Waterloo. This role focuses on developing modern Web and Desktop GUI solutions for our devices using frameworks such as . You will also contribute to software tools that support embedded system development, including build, debug, test, and automation workflows.

The ideal candidate brings strong GUI development expertise, solid software engineering fundamentals, and hands‑on experience with CI/CD automation. You enjoy working across the full software stack and collaborating with cross‑functional teams.

Why Join Us:

We create a diverse set of world-class products in a friendly and team-oriented atmosphere. We provide an environment of continual learning and growth opportunities including patent and publication incentives. We provide education assistance programs and support volunteer & charitable programs as well as comprehensive wellness and retirement benefits.

What You’ll Need:

• University degree in Computer Engineering, Software Engineering, Computer Science or a related discipline
• 8+ years of experience in software development for bachelor’s degree holders. 5+ years of experience for master’s degree holders.

• Development of cross-platform Graphical User interface (GUI) applications and Communication libraries

• Contribute to reusable components for our GUI Platform and evolve its architecture

• Design and implement tools to develop embedded software and firmware development (., build systems, IDE features, debuggers, simulators, test frameworks).

• Collaborate with cross-functional teams to understand tooling needs and deliver scalable solutions.

• Develop and maintain automation scripts for build, test, and deployment.

• Optimize tool performance and ensure cross-platform compatibility.

• Provide clear documentation and internal training.

• Troubleshoot issues across host-side and embedded/firmware development environments

We're looking for candidates with:

• 3+ Years of Web front end technologies such as , Typescript, JavaScript, CSS, HTML5

• Strong programming and debugging skills in C/C++

• Python development experience

• Experience building end-user GUI applications and working with embedded systems

• Experience with embedded toolchains (., GCC, IAR, Keil), debuggers (., GDB, JTAG), and build systems (., West, CMake, Make).

• Experience in software development at a variety of levels, including both host side and embedded software

• Excellent written, verbal and presentation skills

Nice to have:

• Embedded systems knowledge including microcontrollers & microprocessors, serial communication protocols (SPI, I2C, UART).

• Desktop GUI Development frameworks such as or QT

• Experience with RTOS-based or bare-metal embedded systems.

• Familiarity with Software architecture and design patterns

• Experience with Agile Software Development, Test-Driven Development and Continuous Integration/Deployment CI/CD (Jenkins, GitHub Actions).

• Experience in using AI-tools for code-generation such as GitHub Co-pilot, Cursor etc. Experience developing AI agents to assist with the various stages of software development.

• Contributions to open-source embedded tools or frameworks.

Our office is one with cultural diversity, mutual respect and engaging fun! Enjoy complimentary coffee, bagels and snacks in the kitchen; relax with other employees by doing puzzles and playing video games during your off-time in our lounge; play an instrument in our office band; and don't forget to tie on your cleats and join us for soccer every Friday at lunch!

At onsemi, , you will have an opportunity to expand your horizons, work on exciting projects and make things happen!

onsemi is excited to share the base salary range for this position is $101.000.00 to $150,600.00. Range is exclusive of fringe benefits or potential bonuses. The final pay rate for the successful candidate will depend on geographic location, skills, education, experience, and/or consideration of internal equity of our current team members. We also offer a competitive benefits package.