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# Senior Software Engineer, Simulation

- **Company:** Commnet Wireless, LLC
- **Location:** San Francisco, CA, United States
- **Experience:** Expert
- **Salary:** $195,000.0 - $246,000.0
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Automation of Tests, C++ (Programming Language), Command-Line Interface, Configuration Management, Continuous Integration, Software Debugging, Programming Tools, Middleware, Python (Programming Language), Software Engineering, Systems Integration, Test Case, Data Logging, Indexer, Information Technology, Codebase, Lidar
- **Published:** October 31, 2026
- **Apply:** https://www.careerbuilder.com/job-details/senior-software-engineer-simulation-san-francisco-ca--74264ad5-39e3-42ba-b020-ccee18e62ad0

## About the Role

Software Engineering, Software Simulation, Mineral/Metal Mining, Artificial Intelligence (AI), Real Estate, Manufacturing, Hardware-Software Integration, Software Engineering, Simulation, Machine Tool, * Bachelor's degree in Computer Science, Robotics, Electrical Engineering, or a related field with 5+ years of software engineering experience, or a master's with 3+ years required.

 * Proficiency in C++ and Python, including the ability to read, navigate, and debug large codebases.
 * Experience building and operating data or test infrastructure at scale, including pipelines, batch execution, storage and indexing.
 * Experience with simulation, log replay, or large-scale automated testing for robotics or autonomous vehicles.
 * Working experience with a robotics middleware and its logging and replay tooling.
 * Experience handling autonomous driving or robotics sensor data across multiple modalities and timestamps, including camera, LiDAR, and radar.
 * Practical understanding of determinism and reproducibility, including clock control, seed management, and configuration pinning.
 * Experience integrating test workloads into continuous integration.
 * Working fluency with modern AI coding and agentic development tools.
 * Clear written communication covering design notes and test results.
 * Willingness to travel occasionally to deployment and test sites.
 * Ability to work onsite five days a week in San Francisco.

## Description

We are seeking a Senior Software Engineer to build the log replay and scenario execution systems at the core of our simulation platform. In this role, you will take a recorded log from storage, to a replayable test case, to a scored result, and own the execution, determinism, and reporting in between. You will do this across on-road and off-highway programs, and you will own the tooling other engineers use to run scenario suites.

What you'll do

 * Log replay. Build the pipeline that converts recorded logs into replayable test cases, including ingest, indexing, retrieval, and replay of a specific run on demand. Implement open-loop scoring against ground truth and closed-loop replay where the simulated machine is allowed to diverge.
 * Scenario execution. Build the execution layer that runs a scenario identically every time, including clock control, seed and configuration management, and results traceable to a software version.
 * Continuous integration. Integrate simulation into CI. Maintain the commit, nightly, and regression workflows, and keep failures attributable.
 * Metrics and reporting. Implement the pass criteria and metrics a release is judged against, and the reporting that reduces a batch of failing runs to an actionable list.
 * Scale and cost. Run large batches efficiently, track the cost of a simulation run, and reduce it as volume grows.
 * Tooling. Build the interfaces, visualizations, and command-line tools that make the platform usable by engineers who did not build it.
 * Cross-functional work. Work with autonomy and robotics on failure definitions, with bench and hardware-in-the-loop engineering on the path from simulation to bench to vehicle.