HITL Test Infra Engineer — Build Scalable Verification

Castelion Corporation; Allen (TX); On-site; USD 120,000 - 180,000; Full time

Benefits offered by this job

Equity

Paid time off

Company holidays

Health benefits

Parental leave

Fitness stipend

EV charging

Catered meals

Stocked kitchen

Job summary

Castelion Corporation is seeking a HITL Test Infrastructure Engineer to architect and own the hardware-in-the-loop test infrastructure for embedded software verification. You will build scalable HITL stations for microcontrollers, FPGAs, GPUs, and custom compute hardware, with automated test frameworks and Kubernetes-based pipelines.

You will collaborate across software, firmware, FPGA, avionics, electrical, and systems teams to define verification requirements, automate test execution, and

Qualifications

• Bachelor's degree in Computer Engineering, Electrical Engineering, Computer Science, Software Engineering, or equivalent practical experience.
• Experience developing software using Python.
• Experience building automated test frameworks using pytest, Robot Framework, or similar.
• Familiarity with embedded software and firmware development workflows, including flashing, booting, debugging, and runtime validation.
• Experience working with serial, JTAG, SWD, or similar hardware debug interfaces.
• Basic understanding of embedded hardware and the ability to read electrical schematics.
• Experience working in Linux development environments.
• Basic understanding of Kubernetes, containerized infrastructure, or modern CI/CD systems.

Responsibilities

• Design, develop, and own Castelion's Hardware-in-the-Loop (HITL) test infrastructure for embedded software and firmware verification.
• Build scalable HITL test stations capable of supporting microcontrollers, FPGAs, GPUs, and custom compute hardware with specialized power and interface requirements.
• Develop automated test frameworks that verify software loading, boot sequences, runtime performance, functional behavior, and system requirements.
• Integrate HITL systems into Kubernetes and CI/CD workflows, enabling developers and automated verification pipelines to reserve hardware, flash devices, execute tests, and review results.
• Develop Python-based test software, automation tools, and infrastructure to maximize test coverage and engineering productivity.
• Design automated test execution strategies for code commits, pull requests, nightly builds, release candidates, and other development milestones.
• Build reliable hardware reservation, scheduling, and resource management capabilities that maximize lab utilization.
• Partner closely with software, firmware, FPGA, avionics, electrical, and systems engineers to define verification requirements and expand automated test coverage.
• Debug complex issues spanning hardware, firmware, software, networking, and infrastructure.
• Continuously improve the reliability, scalability, uptime, automation, and user experience of Castelion's HITL infrastructure.
• Support board bring-up, hardware integration, lab automation, and prototype testing activities as new hardware platforms are introduced.
• Establish best practices for automated verification, hardware management, and continuous integration across engineering teams.

Skills

Python

Embedded systems

Linux development

CI/CD

Troubleshooting

Lab environment

Education

Bachelor's degree or equivalent

Tools

pytest

Robot Framework

Git

Kubernetes

Job description

Castelion Corporation is seeking a HITL Test Infrastructure Engineer to architect and own the hardware-in-the-loop test infrastructure for embedded software verification. You will build scalable HITL stations for microcontrollers, FPGAs, GPUs, and custom compute hardware, with automated test frameworks and Kubernetes-based pipelines.

You will collaborate across software, firmware, FPGA, avionics, electrical, and systems teams to define verification requirements, automate test execution, and