Embedded/Firmware Engineer Intern - Summer 2026

As a Software Engineering Intern, you will work with firmware engineers on Square's Connected Hardware products. With mentorship and guidance, you'll contribute to the development, testing, and debugging of embedded software used in Square's hardware ecosystem.

This internship is designed to give you hands-on experience with real-world embedded systems, expose you to production-quality firmware, and provide you the opportunity to contribute meaningfully to products that the company ships.

You Will

• Contribute code to embedded firmware running on resource-constrained devices

• Help develop and maintain drivers, features, or system components under guidance from senior engineers

• Learn and apply best practices in embedded software development, including code reviews, documentation, and testing

• Write and run tests to validate firmware behavior and product features

• Use debugging tools to investigate and help resolve firmware issues

• Collaborate with partners such as electrical engineering, manufacturing, and quality teams

• Gain exposure to communication protocols and hardware/software integration

You Have

• Currently pursuing a BS or MS in Computer Science, Computer Engineering, Electrical Engineering, or a related field with a graduation date between May 2027 and May 2030

• Recent bootcamp graduates and engineering training participants are also considered within three months of completing program/training requirements

• Coursework or project experience in systems programming, embedded systems, or low-level software

• Experience programming in C or C++ (through coursework, labs, or personal projects)

• Familiarity with basic software engineering concepts such as version control, modular code, and debugging

Technologies We Use and Teach

• Microcontrollers, RTOS concepts, or bare-metal programming

• Communication protocols (e.g. SPI, I2C, UART, and USB)