Senior Engineer, Systems Engineering - Embedded Systems & PLC Controls

Job Title

Senior Engineer, Systems Engineering - Embedded Systems & PLC Controls

Role Summary

Senior embedded software/firmware engineer responsible for developing, integrating, and supporting embedded firmware and PLC-based control systems for industrial and electromechanical products used in semiconductor manufacturing.

Works across hardware, mechanical, systems, manufacturing, quality, and product teams to translate requirements into designs; perform hardware bring-up, system integration, testing, qualification, and sustained support.

Experience Level

Senior - typically requires 5+ years of professional embedded software/firmware experience.

Responsibilities

Primary responsibilities focus on firmware development, integration, validation, and sustained support across the product lifecycle.

• Design, implement, test, and maintain embedded firmware in C/C++ for microcontroller- and processor-based systems.
• Develop low-level drivers, communication stacks, middleware, and application software.
• Implement and optimize real-time control functions: task scheduling, interrupts, state machines, timing, fault handling, and diagnostics.
• Integrate embedded controllers with PLCs, sensors, actuators, motors, drives, and industrial networks.
• Implement and troubleshoot serial and field communications: CAN, RS-232/422/485, UART, SPI, I2C, USB, Ethernet/TCP-IP.
• Perform hardware bring-up and debug using JTAG/SWD, oscilloscopes, logic analyzers, and related tools.
• Create and maintain requirements, architecture, interface documents, test plans, and troubleshooting guides.
• Develop unit, integration, regression, HIL, and system-level tests; improve automation and diagnostics.
• Participate in design and code reviews; follow version control, issue tracking, configuration management, and secure-development practices.
• Support NPI and sustaining engineering: verification, qualification, field troubleshooting, and root-cause analysis.

Requirements

Must-have technical skills, experience, and behaviors.

• 5+ years professional experience developing embedded software or firmware.
• Strong programming skills in C and C++ for embedded systems.
• Hands-on experience with RTOS concepts, interrupts, concurrency, timing, memory, and real-time constraints.
• Experience developing low-level drivers and integrating peripherals (SPI, I2C, UART, CAN, RS-485).
• Experience developing or integrating at least one industrial communication protocol or control network.
• Familiarity with version-control systems (Git), code review, defect tracking, and controlled software releases.
• Experience qualifying and validating software per written specifications through unit, integration, and system-level testing.
• Ability to read schematics and troubleshoot hardware/firmware interfaces using standard lab and debug equipment.
• Ability to produce clear requirements, design documents, interface specs, test plans, and test reports.
• Strong analytical, problem-solving, communication, and cross-functional collaboration skills; able to prioritize and manage multiple assignments.

Education Requirements

Bachelor's degree in Electrical Engineering, Computer Engineering, Computer Science, Software Engineering, or a related technical field is required. A Master’s degree in a relevant engineering or computer-science discipline is listed as preferred. No specific certifications were required or listed.

Nice to Have

Additional skills that broaden fit but are not mandatory.

• Experience programming/integrating PLC platforms (Rockwell/Allen-Bradley, Siemens, Beckhoff, CODESYS).
• HMI and SCADA development or integration experience.
• Familiarity with industrial protocols: CANopen, Modbus, EtherNet/IP, PROFINET, EtherCAT, OPC UA, SECS/GEM, HSMS.
• Embedded Linux (Yocto/Buildroot), BSPs, device drivers, and system services.
• Motor-control, DSP, FPGA/CPLD/HDL, CI/CD, automated test frameworks, containers, or hardware-in-the-loop testing experience.
• Familiarity with industrial cybersecurity frameworks such as IEC 62443 or SEMI E187/E188.

About the Company

Company: Entegris

Headquarters: Billerica, MA, USA

Entegris is a global technology company that develops and supplies advanced materials, components, and systems for the semiconductor and other high-tech industries, specializing in contamination control, filtration, and materials handling solutions.