Aechelon Technology Inc. · 3 hours ago
Data Annotator / Geospatial Annotation Specialist
South San Francisco
Full-time
Onsite
Entry, Mid Level
$82K/yr - $92K/yrAechelon Technology, Inc. is a leading producer of 3D simulator content, including Geospecific visual/sensor databases and realistic 3D models. The Data Annotator / Geospatial Annotation Specialist plays a critical role in the creation of high-quality training datasets for machine learning and computer vision models, ensuring accuracy and consistency in dataset preparation and annotation.
Information TechnologySoftware
Responsibilities
Create precise vector annotations and segmentation masks for training computer vision and object detection models
Perform detailed image segmentation, manually labeling features across large and varied imagery datasets
Follow established annotation guidelines and maintain consistency across global AOIs
Validate and refine automated detection outputs; correct errors or incomplete detections
Work with ML team to understand annotation needs, edge cases, and quality thresholds
Learn how to operate model inference tools and assist in evaluating model performance
Provide feedback on false positives/negatives, detection weaknesses, and annotation ambiguities
Maintain structured documentation of annotation processes, datasets, feature definitions, and QA results
Support improvements to dataset pipelines and annotation workflows through iterative refinement and testing
Assist multiple DAML groups as needed, depending on dataset demands and model development cycles
Qualification
Required
Background in GIS, Remote Sensing, Image Analysis, Digital Art, Photography, or related field (degree preferred but not required with strong experience)
Prior experience with image annotation, data labeling, GIS feature extraction, or segmentation workflows
Ability to visually identify subtle features in imagery with extreme precision
Strong analytical, organizational, and documentation skills
Ability to work with large datasets for extended periods while maintaining accuracy and focus
Adobe Photoshop (Advanced): Expertise in mask creation, polygon tracing, color differentiation, clean-up workflows, and segmentation editing
GIS Tools (Intermediate+): Ability to work in QGIS, ERDAS Imagine, or Global Mapper for spatial visualization and annotation support
Geospatial Data Handling: Ability to work with shapefiles, GeoPackages, raster datasets, and other formats used in ML workflows
Python (Basic–Intermediate): Ability to run scripts, perform data checks, and assist with pre-processing tasks
Documentation Tools: Proficiency using Jupyter Notebook and Git for tracking annotation notes and revisions
Preferred
Experience creating training datasets for machine learning, object detection, or image segmentation models
Familiarity with YOLO, PyTorch, or fast.ai (conceptual knowledge acceptable)
Ability to create simple scripts to automate annotation steps or pre-processing tasks
Experience using ChatGPT or other LLMs to improve workflows, generate helper scripts, or automate documentation
Understanding of geospatial features such as vegetation, buildings, vehicles, aircraft, or other runtime elements
Benefits
Competitive base salary
Company performance-based profit sharing
401k
100% employer paid health benefits (medical, dental, vision, life, std, ltd, and life insurance plans)
Company
Aechelon Technology Inc.
Aechelon Technology, Inc.
Founded in 1998
51-200 employees
Funding
Current Stage
Growth StageTotal Funding
unknown2024-11-25Acquired
Leadership Team
Javier Castellar
Co-Founder & Chief Strategy Officer (CSO)
Chris Blumenthal
CFO/General Counsel
Recent News
2025-09-16
Company data provided by crunchbase