Summer Intern - Firmware Engineer

Creating Peace of Mind by Pioneering Safety and Security

At Allegion, we help keep the people you know and love safe and secure where they live, work and visit. With more than 40 brands, 14,000+ employees globally and products sold in 130 countries, we specialize in security around the doorway and beyond.

Additionally, Allegion is proud to be recognized with the 2026 Gallup Exceptional Workplace Award (GEWA) for the third consecutive year, earning distinction in both the employee engagement and strengths categories. This year, Allegion also received Gallup’s With Distinction honor — a designation reserved for a select group of organizations that go above and beyond in building exceptional workplace cultures. Summer Intern – Firmware Engineer, Allegion Access Technologies – Farmington, Connecticut As an Allegion Firmware Engineer intern, you will contribute meaningful work and make a direct impact to the Firmware/Embedded Software competency. You will gain hands-on experience defining and implementing firmware features for access control and automatic door systems, support product validation, and collaborate closely with hardware, test, and manufacturing teams. If you are seeking a summer experience that offers meaningful work, learning opportunities, professional development, and an opportunity to build strong relationships with your peers and leaders, Allegion is the right place for you!

What You Will Do

Develop, debug, and test embedded firmware for microcontroller-based products. Participate in requirements definition and design discussions for new firmware features and product updates. Implement and maintain device drivers, communication stacks (UART, SPI, I2C, CAN, Ethernet, BLE as applicable), and peripheral interfacing. Work with real-time operating systems (RTOS) and bare-metal architectures as required by product designs. Support hardware bring-up and verification by using tools such as debuggers (JTAG/SWD), logic analyzers, and oscilloscopes. Design t