Senior Software Engineer, Perception

GRABTAXI HOLDINGS PTE. LTD.; Singapore; On-site; SGD 120,000 - 190,000; Full time

Job summary

Grab is seeking a Senior Perception Engineer to build and ship perception stacks that convert raw sensor data into real-time world understanding. You will own foundational work on sensor integrity, calibration, and validation workflows to ensure geometric and temporal accuracy, then broaden into wider perception development.

You will report to a senior engineer and work onsite at Grab's office in Singapore, contributing to robust perception across detection, tracking, and multi-sensor fusion

Qualifications

• 5+ years shipping or operating perception systems in robotics/AV/ADAS.
• Solid geometry and multi-sensor calibration skills (intrinsic/extrinsic).
• Proficient in C++ and Python for production-quality code and lightweight tooling.
• Experience debugging in noisy, production-like environments with log-driven analysis.
• Strong engineering discipline with reproducible workflows and metrics.

Responsibilities

• Ship and improve perception capabilities across detection, tracking, and multi-sensor integration.
• Own perception foundations: sensor integrity and calibration for multi-sensor suite.
• Develop diagnostics and automated checks to catch timing or geometric issues early.
• Collaborate with Integration/Data/Infra teams to ensure production-like reliability and latency analysis.

Skills

Perception systems

Geometry & multi-sensor calibration

C++ & Python

Production-like debugging

Engineering discipline

AI tooling proficiency

Tools

OpenCV

PCL

Ceres

Job description

Job Description

About the Team:

The Robotics Technology team is a core part of Grab's long-term vision to build urban embodied AI. Our engineers take full ownership of the product lifecycle: designing and manufacturing hardware in-house, developing control and machine-learning systems, and rigorously testing in real-world conditions and production fleet operations. We are executing an ambitious growth plan to expand our robotics fleet across cities over the coming years, and we are focused on delivering highly productive, safe and efficient robot delivery services that help address current delivery labor shortages.

Based in Singapore and China, we offer opportunities to work on the latest autonomy, deploy solutions in complex environments, and directly influence the future of last-mile logistics. If you're excited by tangible impact, large-scale systems and cross-functional engineering, you'll find meaningful challenges and rapid career growth here.

Get to know the role

As a Senior Perception Engineer, you will help build and ship the perception stack that turns raw sensor data into reliable, real-time understanding of the world. You will be hands-on across the perception stack, contributing to shipping milestones through evaluation, debugging, integration, and iterative improvements to perception algorithms and runtime behaviour.

To accelerate early progress, you will take initial ownership of perception foundations: sensor integrity, calibration, and the tooling and validation workflows that ensure our perception inputs are geometrically and temporally correct. This work is a direct lever on perception quality and iteration speed. As these foundations stabilise, you will broaden into wider perception development, taking on larger slices of perception delivery over time.

You will report to the Senior Principal Perception & Prediction Engineer and working onsite at Grab office.

The critical tasks you will perform

• You will ship and improve perception capabilities across detection, tracking, and multi sensor integration, using disciplined evaluation and failure analysis to iteratively raise quality and robustness.
• You will take initial ownership of perception foundations, including sensor integrity and calibration for our multi sensor suite (camera, LiDAR, radar, and IMU).
• You will build practical diagnostics and automated checks to catch geometric or timing issues early and prevent misdiagnosis of them as perception regressions.
• You will partner with Integration and Data and Infra teams to ensure perception is reliable in production-like conditions, including logging and replay workflows, and performance and latency investigations.

Qualifications

What Essential Skills You Will Need

• At least 5 years hands-on experience shipping or operating perception systems for robotics, AV, or ADAS, with experience debugging and improving real-world performance.
• Fundamentals in geometry and multi sensor systems, including practical calibration know how (intrinsic and extrinsic) and the ability to diagnose alignment or time synchronisation issues that impact perception quality.
• Proficiency in C++ and Python, with the ability to write production quality code and build lightweight tools or checks that improve iteration speed and reliability.
• Experienced navigating in noisy, production like environments, including log-driven root cause analysis across software, configuration, and sensor behaviour.
• Engineering discipline, including reproducible workflows, clear metrics, and validation minded execution.
• Demonstrated proficiency in leveraging AI tools and systems to drive efficiency and innovative problem-solving.

Good to have

• Familiarity with perception model lifecycle elements such as dataset curation, evaluation metrics, regression detection, deployment constraints, and inference performance optimization.
• 3+ years of experience with common robotics/perception libraries (e.g., OpenCV, PCL, Ceres) and tools for visualisation and debugging.
• Experience with sensor fusion, tracking, or 3D perception pipelines, and interest in growing deeper in these areas over time.