Senior​/Simulation Integration Engineer

Who we are

Gatik, the leader in autonomous middle-mile logistics, is revolutionizing the B2B supply chain with its autonomous transportation-as-a-service (ATaaS) solution and prioritizing safe, consistent deliveries while streamlining freight movement by reducing congestion. The company focuses on short‑haul, B2B logistics for Fortune 500 retailers and in 2021 launched the world’s first fully driverless commercial transportation service with Walmart. Gatik's Class 3‑7 autonomous trucks are commercially deployed across major markets, including Texas, Arkansas, and Ontario, Canada, driving innovation in freight transportation.

The company's proprietary Level 4 autonomous technology, Gatik Carrier™, is custom‑built to transport freight safely and efficiently between pick‑up and drop‑off locations on the middle mile. With robust capabilities in both highway and urban environments, Gatik Carrier™ serves as an all‑encompassing solution that integrates advanced software and hardware powering the fleet, facilitating effortless integration into customers' logistics operations.

We are building a high‑scale, web‑based simulation platform designed to validate autonomous systems. We have an R&D team producing AI/ML models and a Senior Full‑Stack Engineer building the platform interface. We are seeking a Simulation Integration Engineer to be the critical technical link between these two teams. Your role is to ensure that the autonomy stack runs reliably within a virtual environment, creating the complex testing scenarios and ROS2 infrastructure required to stress‑test our AI models.

This is a "Sim-to-Stack" orchestration role. While you won't be deploying to physical hardware, you are responsible for ensuring the virtual world provides high‑fidelity data to the
autonomy stack and correctly captures the model's performance

This role is onsite 5 days a week at our Mountain View, CA office!

• ROS2 Stack Integration:
  Develop and maintain the ROS2 middleware layers (C++/Python) that allow AI models to receive sensor data and send control commands within the simulation.
• Scenario Engineering:
  Script and implement dynamic testing scenarios (e.g., traffic interactions, pedestrian behavior, triggered events) using Python or simulator‑specific APIs.
• Sensor Simulation:
  Configure and tune simulated sensor suites (LiDAR, Camera, Radar, IMU) to provide realistic data streams for the AI models.
• Bridge Development:
  Collaborate with our Senior Full‑Stack Engineer to ensure simulation states and "Success/Failure" metrics are correctly streamed to our web‑based dashboard.
• Headless Orchestration:
  Ensure simulations can run in "headless" mode within Docker containers for automated, large‑scale cloud testing.
• Data Logging:
  Manage the serialization of ROS2 messages (MCAP/Bag files) for post‑simulation analysis and playback.

• Expertise in ROS2:
  Mastery of ROS2 (Humble, Foxy, or Jazzy), including node composition, custom message types, and QoS configuration.
• Programming:
  High proficiency in Python 3.x (for scenario logic) and Modern C++ (for performance‑critical nodes).
• Simulation Platforms:
  Proven experience with at least one major simulator (e.g., CARLA, Gazebo, NVIDIA Isaac Sim, or SVL).
• Scenario Logic:
  Experience building event‑driven logic and "adversarial" agent behaviors within a simulated environment.
• Linux & Docker:
  Strong experience in Ubuntu‑based development and containerizing robotics stacks for deployment.
• Systems Thinking:
  Ability to debug complex timing and synchronization issues between a simulator and a distributed ROS2 stack.

• Experience with automated testing frameworks for robotics.
• Understanding of coordinate frames (TF2) and spatial transformations.
• Knowledge of CI/CD pipelines for automated simulation runs.

Salary Range - $170,000- $240,000

Founded in 2017 by experts in autonomous vehicle technology, Gatik has rapidly expanded its presence to Mountain View, Dallas‑Fort Worth, Arkansas, and Toronto. As the first and only company to achieve fully driverless middle‑mile commercial deliveries, Gatik holds a unique and defensible position in the AV…