Software Engineer

Software Engineer Pivotal Systems is looking for a Software Engineer to join our engineering team in Fremont, CA. This is a versatile, hands-on role for an engineer early in their career: you'll build Python application software, test and calibration software, and graphical user interfaces for our gas flow controller products.

Key Responsibilities

Develop and maintain Python desktop applications that run calibration and quality-test workflows Write and maintain instrument drivers over RS-232 and RS-485, including ASCII protocols, Modbus RTU, flow references (piston provers, flow meters), relay boards, and pressure sensors Build Py. Qt graphical user interfaces for operators and engineers: control panels, per-device views, parameter tables, progress tracking, and logs Develop real-time plots of streaming sensor data and offline viewers for exported test data Develop and support manufacturing test station software for calibration, flow verification, leak test, response time, and final QA Integrate test results with our Manufacturing Execution System (MES) Required Qualifications About 2 years of professional software development experience, primarily in Python Experience building desktop GUI application or web application Experience writing automated tests and debugging methodically, from logs to root cause Working knowledge of multithreading and concurrency basics Proficiency with Git and collaborative development practices such as code review Comfortable working hands-on in a lab with hardware, instruments, and test stations Clear written communication in English, including technical documentation Ability to switch between application, test, and GUI work, and to own tasks through completion Preferred Qualifications Experience with serial instrument communication (RS-232/RS-485, Modbus, SCPI) Experience with manufacturing test, test automation, or MES platforms Background in calibration, metrology, flow or pressure measurement, or semiconductor capital equipment Experience with numerical analysis, curve fitting, statistics, or statistical process control (SPC) Experience with SQL Experience with pyqtgraph, numpy, openpyxl, Py.

Installer, or Qt internationalization