Senior/Principal Motor Controls Firmware Engineer (5–15 Years Experience)

About the role

We are seeking a Motor Controls Firmware Engineer with 5–15 years of experience to join a collaborative, hands-on engineering team. This role focuses on developing and maintaining control firmware for our family of Axial flux PCB stator motors. This is an on-site role in our Austin, Texas or Liberty Lake, Washington office; we currently cannot sponsor visas.

Key Responsibilities

• Design, develop, and maintain embedded motor control firmware in C for Texas Instruments motor control C2000 real-time microcontrollers
• Implement and optimize low-level drivers and hardware interfaces
• Participate in code reviews and contribute to design discussions
• Debug and resolve firmware issues, including root cause analysis
• Collaborate with cross-functional teams including hardware and systems engineers
• Contribute to new feature development and ongoing product improvements
• Perform hands-on testing and validation using lab equipment

Required Qualifications

• 5–15 years of experience in embedded motor control firmware development using C and/or C++ with a demonstrated history of delivering production quality code
• Solid understanding of motor control Field Oriented Control and Space Vector Modulation theory:
• Clarke and Park transforms
• Space Vector PWM (SVPWM)
• Current, voltage, and speed control loops
• Rotor position estimation techniques (e.g., back-EMF observers, sliding mode observers, PLLs)
• Experience with sensorless estimation techniques across operating ranges (startup, low-speed, high-speed)
• Strong experience developing low-level drivers using interfaces such as: I2C, SPI, GPIO, UART, PWMs, Interrupts
• Experience with version control and development tools (e.g., Git, Jira, Bitbucket or similar)
• If located in our Liberty Lake, Washington office - willingness to travel to the Austin, Texas office 25-50% of time during key development cycles.

Preferred Qualifications

• Familiarity with TI's MotorControl SDK, C2000Ware, or Code Composer Studio
• Experience with motor simulation tools (e.g. Typhoon HIL, PLECS RT Box)
• Experience with using scripting languages for testing (e.g. Python)
• Familiarity with RS485 and Modbus communication protocols
• Hands-on lab experience with debugging tools such as oscilloscopes, dynamometers, logic analyzers, etc.

What You Can Expect in Your First Six Months

• Integrate into a collaborative and close-knit engineering team
• Gain familiarity with existing motor control and communication codebases
• Actively participate in code reviews and technical design discussions
• Contribute to motor control firmware feature implementation and bug fixes
• Work directly with motors and embedded systems in a lab setting

Benefits

• Comprehensive Health Coverage (Medical/Dental/Vision)
• Short-Term & Long-Term Disability Coverage
• Health Savings Account (HSA) – includes employer contributions.
• Flexible Spending Account (FSA) & Limited Purpose Flexible Spending Account
• 401(k) – Traditional and Roth
• Stock Options
• Open Paid Time Off (PTO)
• 12 Paid Holidays
• Potential Relocation Assistance
• Flexible schedule – including hybrid possibilities
• Company Paid Lunch on Fridays
• Community Give-back Opportunities

Infinitum

Infinitum embraces diversity and is an equal-opportunity employer.

Agency Representatives

We appreciate your interest, but we've got this!