Senior Software Engineer – Test/Internal Tooling

Parallel Systems • Los Angeles, CA

1d

About The Position

Parallel Systems is pioneering autonomous battery-electric rail vehicles designed to transform freight transportation by shifting portions of the $900 billion U.S. trucking industry onto rail. Our innovative technology offers cleaner, safer, and more efficient logistics solutions. Join our dynamic team and help shape a smarter, greener future for global freight. Senior Software Engineer – Test/Internal Tooling Parallel Systems is seeking a Senior Software Engineer to design, develop, and maintain critical test software/infrastructure for an autonomous rail vehicle. In this role, you will work with systems required to ensure that our autonomous rail vehicles satisfy all regulatory, technical, and safety requirements. This position requires strong software development skills as well as deep expertise in testing both cloud-based software and physical hardware systems. Moreover, candidates will need to be able to guide overall testing strategy, mentor engineers, and collaborate across product, software, hardware, and infrastructure/IT teams to deliver reliable, scalable solutions.

Requirements

• 5+ years of software development skills and professional experience with both scripting (Python) and systems (C++/Rust) programming languages
• 3+ years of experience building test software and/or internal tooling, with an emphasis on hard tech products in addition to conventional cloud software
• Experience with both hardware-in-the-loop (HITL) testing and software-in-the-loop (SITL) simulations
• Working proficiency with Linux, DevOps, cloud services, and containerization (Docker, Kubernetes)
• Demonstrated success in leading technical design, setting direction, and mentoring other engineers

Nice To Haves

• Experience in safety-critical domains such as autonomous vehicles, industrial control, or aerospace
• Knowledge of rail control systems (strong plus)
• Ability to work cross-functionally and balance technical depth with product impact
• Experience with polyglot codebases

Responsibilities

• Design, develop, and maintain testing frameworks for on-vehicle software as well as cloud-based services
• Design, develop, and maintain hardware test stands for the vehicle subsystems
• Maintain continuous integration (CI) pipeline, with an emphasis on reliability, speed, and cost effectiveness
• Partner with hardware and software teams to develop useful internal software tooling
• Contribute to regulatory documentation, including software traceability and test protocols
• Provide technical mentorship and guidance to engineers across the testing and validation team
• When appropriate, step into project leadership, ensuring milestones are well-defined and achieved

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed
• Number of Employees: 11-50 employees