Synced from Greenhouse · Jun 25

Software Engineer II – Test/Internal Tooling

Parallel BioLos Angeles, CAPosted Jun 25, 2026
Software Engineer in TestMid
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Mirrored from Parallel Bio's own Greenhouse careers system · refreshed hourly

$140k–$164k
Compensation
17
Other open Parallel Bio roles
Jun 25
Posted
Greenhouse
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Job descriptionReq 5173338007

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.

Target Salary Range:
$140,000$164,000 USD

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.

View original posting on Greenhouse

What applying to Parallel Bio usually looks like

Based on publicly available information, candidates applying through greenhouse can generally expect an online application form requesting a resume and possibly a cover letter, followed by an automated confirmation email. For Parallel Bio, roles spanning engineering, technical, and business functions may involve an initial recruiter screen, followed by one or more interviews with hiring managers or team members, which may include multiple stages such as technical assessments, portfolio reviews, or case studies depending on the position. Greenhouse-based processes commonly allow candidates to track application status through a candidate portal, though response times vary and are not guaranteed. Communication typically occurs via email, and candidates should be prepared for a mix of behavioral and role-specific technical questions. Following up politely after submission is generally considered acceptable practice.

Based on publicly available information. LandEarly does not verify interview process details.

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Software Engineer II – Test/Internal Tooling
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