HIL Test Automation Engineer

Terabase Energy; United States; Remote; USD 80,000 - 100,000; Full time

Benefits offered by this job

401k match

Stock options

Home office setup allowance

Job summary

Terabase Energy, Inc. is seeking a Test Automation Engineer to develop and execute automated test frameworks for SIL and HIL environments, validating power plant controllers and SCADA systems. The role emphasizes scalable automation to catch edge cases before field deployment.

Responsibilities include building automation frameworks, defining V&V plans, and integrating tests into CI/CD pipelines, working across SIL, MIL, and HIL setups, with root-cause analysis and detailed reporting.

Qualifications

• Bachelor’s or Master’s degree in electrical/computer engineering, CS, or related field.
• 2+ years of professional software validation or test automation experience for hardware-focused systems.
• Expert-level Python and Bash scripting; some PLC/RTAC IEC 61131-3 knowledge.

Responsibilities

• Design, build, and maintain scalable automated test frameworks and scripts for power, control, and SCADA systems using Python.
• Define and execute Verification and Validation (V&V) plans to meet site controller and SCADA requirements under fault conditions.
• Integrate automated HIL/SIL testing into CI/CD pipelines and provide real-time feedback to development teams.

Skills

Python

Bash scripting

PLC/RTAC IEC61131-3

Edge-case testing mindset

Education

Bachelor’s or Master’s 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

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 with any staffing‑related inquiries.