3D & LiDAR Data Annotation Analyst

Posted 5 Days Ago
Hiring Remotely in Sydney, AUS
In-Office or Remote
Entry level
Information Technology
The Role
Annotate 2D and 3D objects in imagery, video, and LiDAR point clouds for autonomous-machine perception datasets. Create segmentation, tracking, pose, and keypoint labels while following detailed guidelines and quality standards. Review work, address QA feedback, document tooling and data issues, escalate ambiguities, and contribute to calibration sessions and annotation guideline improvements.
Summary Generated by Built In
About the Role 

We’re building high-quality ground-truth datasets used to train and validate perception models for autonomous and operator-assisted machines working in complex, real-world environments. 

As a Data Annotation Analyst, you’ll work with camera imagery, video, and LiDAR point clouds to create precise labels that help perception systems understand objects, people, terrain, and surrounding environments. You’ll work in specialized annotation tools, following detailed specifications while balancing accuracy, consistency, and production volume. 

Your Impact 
  • Annotate 2D and 3D objects across images, video, and LiDAR point clouds, including vehicles, machinery, people, signage, and environmental features.
  • Create and maintain accurate segmentation, object tracking, pose, and keypoint annotations across sequences.
  • Apply detailed annotation guidelines, including class definitions, occlusion rules, object thresholds, and inclusion/exclusion criteria.
  • Review your work, respond to QA feedback, and maintain established quality and accuracy standards.
  • Identify and escalate ambiguous scenes, sensor artifacts, tooling issues, and gaps in specifications rather than making assumptions.
  • Document data quality and tooling issues with clear details and reproduction steps.
  • Participate in calibration sessions, guideline reviews, and team standups to maintain consistent interpretations.
  • Share observations that help improve annotation guidelines, taxonomies, and edge-case documentation. 

Success in this role means producing accurate, consistent annotations at the expected volume while helping maintain a reliable, high-quality dataset. 

What You Bring 
  • Strong attention to detail and the ability to maintain accuracy while performing repetitive, visually intensive work for extended periods.
  • Strong spatial reasoning skills, including the ability to interpret 3D environments and understand object size, position, and orientation.
  • Ability to learn and navigate complex, purpose-built software and become productive with keyboard shortcuts and other tooling features.
  • Experience working in a fast-paced, scaled environment with defined productivity, quality, or accuracy targets.
  • Experience with image annotation GenAI workflows
  • Reliable high-speed internet, a distraction-free workspace, and the ability to work on a company-provisioned machine within a controlled environment. 
Nice to Haves 
  • Associate or bachelor’s degree.
  • Experience with image, video, LiDAR, or 3D annotation tools.
  • Experience with subsurface utility engineering (SUE), construction surveying, surveying, GIS, or other work involving spatial interpretation of physical environments.
  • Experience with AutoCAD or similar type tools
  • Experience in construction, mining, agriculture, industrial operations, or heavy equipment environments.
  • Familiarity with point cloud data, sensor fusion, or camera-LiDAR calibration.
  • Experience working with autonomous vehicles, robotics, or machine perception datasets.

Why You’ll Love Working Here

At Appen, we foster a culture of innovation, collaboration, and excellence. We value curiosity, accountability, and a commitment to delivering the highest-quality AI solutions for frontier models.

You’ll work on complex challenges that shape the future of AI across industries and geographies, alongside talented people in a culture that values humility over ego. You’ll have the flexibility to deliver in a way that works for you and your team, supported by tools, resources and development opportunities to continue to build your capability over time.

About Appen

Appen has been a leader in AI training data for over 30 years. We specialise in human generated data to train, fine tune, and evaluate models across generative AI, large language models, computer vision, and speech recognition. Our AI assisted data annotation platform and global crowd of more than 1 million contributors in over 200 countries support model pre-training, supervised fine tuning, evaluation and benchmarking, safety and red teaming, and multilingual global expansion.

Skills Required

  • Strong attention to detail and ability to maintain accuracy during repetitive, visually intensive work
  • Strong spatial reasoning skills, including interpreting 3D environments and object size, position, and orientation
  • Ability to learn and navigate complex purpose-built software and use tooling features such as keyboard shortcuts
  • Experience working in a fast-paced, scaled environment with defined productivity, quality, or accuracy targets
  • Experience with image annotation GenAI workflows
  • Reliable high-speed internet and a distraction-free workspace
  • Ability to work on a company-provisioned machine within a controlled environment
  • Associate or bachelor's degree
  • Experience with image, video, LiDAR, or 3D annotation tools
  • Experience with subsurface utility engineering, construction surveying, surveying, GIS, or other spatial interpretation work
  • Experience with AutoCAD or similar tools
  • Experience in construction, mining, agriculture, industrial operations, or heavy equipment environments
  • Familiarity with point cloud data, sensor fusion, or camera-LiDAR calibration
  • Experience with autonomous vehicles, robotics, or machine perception datasets
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The Company
HQ: Sydney
11,475 Employees
Year Founded: 1996

What We Do

We help our clients enhance their best-in-class products and services around the world, including search engines, social media platforms, voice recognition systems, sentiment analysis, and eCommerce sites. All of that wouldn’t be possible without our team of more than 1 million flexible workers. The world of tech is moving fast, and we help our clients meet the ever-changing needs of their customers. We take pride in our diverse, international team and the flexible and full-time opportunities we offer.

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