HIL Test Automation Engineer

Terabase Energy; Woodland (CA); On-site; USD 80,000 - 100,000; Full time

Benefits offered by this job

401k match

Stock options

Home office setup allowance

Job summary

Terabase Energy is seeking a Test Automation Engineer in Northern California to design, implement, and maintain automated test frameworks for SIL, HIL, and MIL environments. You will help validate power plant controller and SCADA systems, building scalable Python-based solutions and integrating them into CI/CD pipelines.

Ideal candidates have 2+ years in hardware-focused software validation, strong Python and Bash skills, and experience with Pytest/OpenHTF, Git, and Docker in automated test

Qualifications

• Bachelor's or master's degree in electrical engineering, Computer Engineering, Computer Science, or a related field.
• 2+ years of professional experience in software validation or test automation for hardware-focused systems.
• Expert-level proficiency in Python and Bash scripting; working knowledge of PLC/RTAC/IEC 61131-3.

Responsibilities

• Automation Framework Development for power, control and SCADA systems using Python.
• Define and execute comprehensive Verification and Validation plans for site controller and SCADA systems.
• CI/CD integration of automated HIL/SIL testing into pipelines and provide real-time feedback.

Skills

Python

Bash scripting

PLC/IEC 61131-3

Test automation

Git

Jenkins/GitHub Actions

Docker

Pytest

OpenHTF

Edge-case testing

Education

Bachelors in electrical/computer engineering or CS

Masters in electrical/computer engineering or CS

Tools

Git

Jenkins/GitHub Actions

Docker

Pytest/OpenHTF

Job description

At Terabase Energy, we believe that digitalization and automation will drive the next wave of innovation and cost reduction in large scale solar. To fully unlock the potential of this opportunity, Terabase is developing an interconnected software and construction automation platform. We work alongside project developers, owners, and engineering & construction firms to support the design, optimization, and construction of huge solar projects around the world. Our team is a blend of solar-industry veterans and newbies, thought-leaders, dreamers, software, electrical and mechanical engineers, coders, product managers, project managers, and sales and marketing professionals. We are based in Northern California, with several other offices in the United States and around the world.

Job Description

Test Automation Engineer is responsible to develop, and execute automated test frameworks for environments like SIL(Software-in-the-loop) and HIL(Hardware-in-the-loop), that allow us to test our power plant controller and SCADA system. Your mission is to build the automated frameworks that catch edge cases before they hit the field, ensuring every product we ship meets the highest standards of reliability.

Responsibilities

• Automation Framework Development: Design, build, and maintain scalable automated test frameworks and scripts for power, control and SCADA systems using Python. You will transition our validation processes from manual intervention to a fully automated, scalable framework
• V&V Strategy: Define and execute comprehensive Verification and Validation (V&V) plans, ensuring all software requirements for the site controller and SCADA systems are met under normal and fault conditions
• CI/CD Integration: Integrate automated HIL/SIL testing into our CI/CD pipelines, providing real-time feedback to the development teams and serving as the final gate for production-ready code
• Requirements Investigation: Analyze and interpret technical specifications to author comprehensive automated test suites, actively tracking down gaps in system requirements
• Multi-Environment Execution: Execute automated test suites across SIL, MIL, and HIL setups. Analyze test captures, isolate system failures, and generate detailed engineering reports
• Root Cause Analysis: Work closely with the controls and systems teams to debug complex failures found during validation, using logic analyzers, oscilloscopes, and telemetry logs to pinpoint issues

Requirements

Qualifications

• Education: Bachelor's or master's degree in electrical engineering, Computer Engineering, Computer Science, or a related field
• Experience: 2+ years of professional experience in software validation or test automation for hardware-focused systems
• Programming Mastery: Expert-level proficiency in Python and Bash scripting, alongside a practical reading knowledge of PLC/RTAC/IEC 61131-3 Control logic
• Automation Toolchains: Direct experience architecting or heavily extending modern pythonic test frameworks (such as Pytest or OpenHTF)
• Systematic Thinking: A dedicated mindset for "breaking" software. You have a track record of finding critical edge cases in complex state machines and control loops
• Infrastructure: Experience with Git, Jenkins/GitHub Actions, and containerization tools like Docker for managing consistent test environments

Preferred Qualifications

• Knowledge of NERC, FERC, ISO/RTO, and utility interconnection requirements is preferred
• Experience with utility-scale solar PV, Battery ---Energy Storage Systems (BESS), hybrid renewable energy plants, or inverter-based resources (IBR) is preferred
• Version Control: Advance user-level with Git and modern branch management strategies

Communication protocols (e.g., IEC 61850, Modbus, DNP3)

Benefits

Compensation And Benefits

Our salary ranges are determined by role, level, and location. This role offers a base salary of $80,000 - $100,000. Within each posted range, individual pay is determined (and may be greater or higher), dependent on work location and additional factors, including job-related skills, experience, and relevant education or training. Terabase offers competitive compensation along with a comprehensive benefits package, including:

• Generous time off and holiday policy
• Flexible time off
• Comprehensive benefits package
• Career progression
• 401k match
• Stock options
• Home office set up allowance
• And much more!

Terabase is an equal opportunity employer. We recruit, hire, employ, train, promote, and compensate individuals based on job-related qualifications and abilities. We strongly encourage people of all backgrounds to apply.

We do not discriminate for any reason including race, color, sex, gender, age, religion or religious creed, national origin, ancestry, citizenship, marital status, sexual orientation, gender identity, gender expression, genetic information, physical or mental disability, military/ veteran status, or any other characteristic protected by law.

We offer a welcoming and inclusive environment in service to one another, our products, the diverse consumers we represent, and the communities we call home.

Principles only. This role is not open to receiving agency candidates, and any contingent submissions will not be considered. Terabase Energy does not utilize third-party recruitment agencies. Please contact our Recruiting team at [e-mail] with any staffing-related inquiries.