Real job — pulled straight from Parallel’s careers page · Verified July 17, 2026 · No reposts.
Job description
Parallel is hiring a Software Engineer, Test/Internal Tooling — a full-time, based in Los Angeles, CA role ($140k–$164k). Apply directly on Parallel's careers page below.
Software Engineer II – Test/Internal Tooling
Location: Los Angeles, CA
Department: Engineering
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.
Software Engineer II – Test/Internal Tooling
Parallel Systems is seeking a 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.
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
- When appropriate, step into project leadership, ensuring milestones are well-defined and achieved
What Success Looks Like
- After 30 Days: You've developed a working understanding of our testing infrastructure and are actively assisting in the bring-up of new test systems.
- After 60 Days: You’ve developed a deep understanding of our testing infrastructure. You are assisting in significant overhauls and expansions to our testing capabilities, as well as actively driving discussions around the testing team’s overall strategy and priorities.
- After 90 Days: You’ve delivered major testing features and are proactively ensuring the testing team’s roadmap is aligned with the company’s future milestones.
Basic Requirements
- 3+ years of software development skills and professional experience with both scripting (Python, JS, etc.) and systems (C++/Rust) programming languages
- Professional experience, or a high interest, in working on software test infrastructure with the ability to reason about correctness, performance, and system design
- Experience with both hardware-in-the-loop (HITL) testing and software-in-the-loop (SITL) simulations
- Working proficiency with Linux and the software test/build/deploy lifecycle
- Demonstrated success in leading technical design, setting direction, and mentoring other engineers
Preferred Qualifications
- 2+ years of experience building test software and/or internal tooling, with an emphasis on hard tech products in addition to conventional cloud software
- 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
We are committed to providing fair and transparent compensation in accordance with applicable laws. Salary ranges are listed below and reflect the expected range for new hires in this role, based on factors such as skills, experience, qualifications, and location. Final compensation may vary and will be determined during the interview process. The target hiring range for this position is listed below.
Parallel Systems is an equal opportunity employer committed to diversity in the workplace. All qualified applicants will receive consideration for employment without regard to any discriminatory factor protected by applicable federal, state or local laws. We work to build an inclusive environment in which all people can come to do their best work.
Parallel Systems is committed to the full inclusion of all qualified individuals. As part of this commitment, Parallel Systems will ensure that persons with disabilities are provided reasonable accommodations. If reasonable accommodation is needed to participate in the job application or interview process, to perform essential job functions, and/or to receive other benefits and privileges of employment, please contact your recruiter.
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Frequently asked questions
What is the salary for Software Engineer, Test/Internal Tooling at Parallel?
The estimated salary range for Software Engineer, Test/Internal Tooling at Parallel is $140,000 - $164,000 USD per year.
What skills are required for Software Engineer, Test/Internal Tooling at Parallel?
The required skills for Software Engineer, Test/Internal Tooling at Parallel include: Python, JavaScript, C++, Rust, Linux, CI/CD.
What is the seniority level for Software Engineer, Test/Internal Tooling at Parallel?
Software Engineer, Test/Internal Tooling at Parallel is a Mid Level level position.
How do I apply for Software Engineer, Test/Internal Tooling at Parallel?
You can view the full description and apply for Software Engineer, Test/Internal Tooling at Parallel on EchoJobs: https://echojobs.io/job/parallel-software-engineer-ii-test-internal-tooling-dc1ov.