Sr. Engineer, Infrastructure Software

Senior Software/Firmware Engineer

SiTime is looking for a talented and motivated Senior Software/Firmware Engineer to join our growing infrastructure team in Michigan. You will build and scale next-generation mixed-signal semiconductor test systems and automation platforms, collaborating closely with hardware, validation, and test engineers across global teams. This role is essential to ensuring the performance, stability, and scalability of production and R&D test infrastructure. This position is "startup mode" by design: you'll be hands-on, move fast, own outcomes end-to-end, and help shape the architecture, coding standards, and development workflows as the team scales.

Responsibilities

• Design and develop software/firmware for mixed-signal chip test systems and infrastructure platforms
• Build a robust Hardware Abstraction Layer (HAL) to standardize control of instruments, fixtures, and embedded controllers across multiple test platforms
• Architect modular, reusable software components (drivers, services, libraries, APIs) to enable rapid bring-up of new boards, sockets, and test capabilities
• Collaborate with hardware and test engineers to bring up systems, debug issues, and validate test setups (hands-on lab work expected)
• Partner with production teams to transfer test systems to OSAT and support ramp/debug in manufacturing environments
• Optimize and expand existing test automation frameworks for throughput, reliability, maintainability, and observability
• Define and implement software quality practices: code reviews, automated testing, release tagging, and CI/CD improvements for infrastructure software
• Document code, workflows, architecture decisions, and best practices for cross-team collaboration and long-term maintainability
• Operate effectively in a fast-moving environment: prioritize, scope, prototype, iterate, and harden solutions into production-grade systems

Qualifications & Requirements

• 5+ years of hands-on experience in software and/or firmware development with demonstrated ownership of shipped, maintained systems
• Strong proficiency in Python, C/C++, C# (MATLAB experience is a plus)
• Proven experience building hardware-interfacing software such as device drivers, control software, embedded services, or instrument automation
• Experience with MCU and/or FPGA integration and control (bring-up, interfaces, command/control, validation)
• Familiarity with instrument communication protocols such as SCPI, VISA, serial/UART (and debugging these interfaces in real systems)
• Strong debugging skills spanning software + hardware boundaries (signal/logic-level thinking, structured root cause, reproducible fixes)
• Ability to work independently and collaboratively in a fast-paced environment; comfortable with ambiguity and rapid iteration
• Willingness to participate in overseas business travel (~1 month per year)
• MS in Computer Engineering, Computer Science, Electrical Engineering, or equivalent practical experience

Compensation Range:

At SiTime, we believe great work deserves great rewards. We offer a comprehensive and highly competitive compensation package designed to attract top talent. The annual base salary range for this role is $ - $. The final offer is determined by factors such as location, experience, education, and training. In addition to base salary, this role is eligible for a quarterly bonus tied to the achievement of innovation goals—reflecting our commitment to recognizing meaningful impact.

We also offer equity grants, providing a meaningful opportunity to share in the company's future growth and success. Benefits offered: 401k plan, health and wellness that includes medical, dental, vision, life, parental leave, legal services, and time off plans.

SiTime is an Equal Opportunity Employer. We treat each person fairly and we do not tolerate discrimination or harassment against anyone on the basis of any protected characteristics, including race, color, religion, national or ethnic origin, sex, sexual orientation, gender identity or expression, age, disability, pregnancy, political affiliation, protected veteran status, protected genetic information, or marital status or other characteristics protected by law.

SiTime participates in the E-Verify program.