Embedded Software Engineer

Delta Electronics Americas; Milwaukee (WI); On-site; USD 110,000 - 140,000; Full time

Job summary

Delta Electronics Americas seeks an experienced embedded software engineer to build and maintain the firmware stack for the Unit Controller that coordinates PCS, BMS, and HVAC. You will port and optimize code for US hardware, implement Modbus TCP/RTU, IEC 61850, CAN, and OPC UA stacks, and set up CI/CD pipelines on Azure DevOps with HIL testing and MISRA/Code quality checks.

Experience in secure boot, OTA updates, role-based access, and IEC 62443-4-1/4-2 will be advantageous in delivering

Qualifications

• BS/MS in Computer Engineering, Electrical Engineering, or Computer Science; 5+ years in embedded software for industrial / energy system.
• Expert in C/C++ on Linux and/or RTOS; strong with multithreading, real-time scheduling, IPC, and deterministic networking.
• Industrial protocol experience: Modbus TCP, IEC 61850 (MMS/GOOSE client), DNP3, OPC UA, CA.
• Modern DevOps: Git, Azure DevOps or GitHub Actions, Docker, Yocto build systems, hardware-in the-loop test rig.
• Cybersecurity fundamentals: secure boot, TLS/mTLS, signed updates, key management.

Responsibilities

• Develop firmware/middleware for the Unit Controller in C/C++ (and Rust where appropriate) on Linux / RTOS targets (Yocto, FreeRTOS, Zephyr).
• Receive and re-platform the existing Taiwan Unit Controller code base; refactor for US PCS/BESS vendors and US standards.
• Implement Modbus TCP/RTU, IEC 61850 (client), CAN, and OPC UA stacks; integrate with PCS, BMS, HVAC, and meters.
• Stand up CI/CD pipelines on Azure DevOps with self-hosted build agents, automated unit tests, static analysis (MISRA, Coverity), and HIL-in-the-loop gates.
• Implement secure boot, signed OTA updates, role-based access, audit logging — aligned to IEC 62443-4-1/-4-2 and NERC CIP where applicable.

Skills

C/C++

Rust

Linux

Multithreading

RTOS

Education

BS/MS in Computer Engineering, Electrical Engineering or Computer Science

Tools

Yocto

FreeRTOS

Zephyr

Azure DevOps

Git

Docker

Job description

Role Summar

Build and maintain the embedded software stack for the Delta Unit Controller, the skid-level brain that coordinates PCS, BMS, and HVAC and exposes a clean interface to the upstream RT and SCADA. You will lead the platform of the developed code base onto Delta US hardware, set up modern CI/CD on Azure DevOps, and deliver IEEE 1547-2018 / UL 1741-SB compliant firmware.

Key Responsibilities

• Develop firmware/middleware for the Unit Controller in C/C++ (and Rust where appropriate) on Linux / RTOS targets (Yocto, FreeRTOS, Zephyr)
• Receive and re-platform the existing Taiwan Unit Controller code base; refactor for US PCS/BESS vendors and US standards.
• Implement Modbus TCP/RTU, IEC 61850 (client), CAN, and OPC UA stacks; integrate with PCS, BMS, HVAC, and meters.
• Stand up CI/CD pipelines on Azure DevOps with self-hosted build agents, automated unit tests, static analysis (MISRA, Coverity), and HIL-in-the-loop gates.
• Implement secure boot, signed OTA updates, role-based access, audit logging — aligned to IEC 62443-4-1/-4-2 and NERC CIP where applicable.

Required Qualification

• BS/MS in Computer Engineering, Electrical Engineering, or Computer Science; 5+ years in embedded software for industrial / energy system.
• Expert in C/C++ on Linux and/or RTOS; strong with multithreading, real-time scheduling, IPC, and deterministic networking.
• Industrial protocol experience: Modbus TCP, IEC 61850 (MMS/GOOSE client), DNP3, OPC UA, CA.
• Modern DevOps: Git, Azure DevOps or GitHub Actions, Docker, Yocto build systems, hardware-in the-loop test rig.
• Cybersecurity fundamentals: secure boot, TLS/mTLS, signed updates, key management.

EEO Statement

Delta Electronics Americas is an Equal Opportunity Employer and is committed to compliance with all applicable federal, state, and local laws. Delta Electronics America is committed to fostering a diverse, inclusive, and respectful workplace. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity or expression, age, marital status, national origin, disability, veteran status, or any other protected characteristic.

Actual pay will depend on factors such as location, skills, experience, market conditions, and business needs. This role may also be eligible for incentive pay, subject to the terms of the applicable plan. Eligible employees receive company-provided benefits in accordance with plan terms and eligibility requirements. Benefits include health coverage, wellness resources, retirement savings plan, paid time off, and other company‑sponsored programs; parental leave is provided in accordance with applicable law.