Tree Taggers

  • Greenstand
  • Remote
  • Aug 02, 2021
Volunteer role

Job Description

Position Description

We are currently building a team of tree taggers to verify global reforestation projects and accelerate Greenstand’s machine learning team. The Tree tagger will help us review, verify, tag, and label tree images. Thousands of pictures of young trees are uploaded to our verification platform. We need help figuring out what species the trees are by using the Computer Vision Annotation Tool (CVAT), a web-based image and video annotation tool which we use for tagging tree images for the development of advanced machine learning algorithms. We will train you in CVAT and our technology platform. This is a great opportunity for an interested individual to get their foot in the door of an annotation program.


  • In this role, you will be asked to analyze tree images based on their leaf patterns, locations and accurately label/tag them using  CVAT.
  • You will work as part of a team to integrate CVAT with our Admin Panel web application in order to complete the tree verification process.
  • You will review various images on the computer and classify them according to their types of species and attach tags.


  • Be passionate about trees, species identification, and machine learning algorithms.
  • Must be comfortable using computers and learning a new program/tool 
  • Detail-oriented, organized, and quality-focused 
  • Strong analytical and problem-solving skills
  • Expecting at least 3+hours in a week, 5+ preferred. 
  • Strong communication skills.

What you get in return

  • Exposure to machine learning expertise to better understand how the labels are used to train  learning algorithms
  • Letter confirming your volunteer hours and projects 
  • Professional reference(s) 
  • Valuable experience & leadership opportunities 
  • Engagement with a team of global professionals 

 About Greenstand 

Greenstand is a fully remote social nonprofit organization turning environmental stewardship into a reliable source of income. Our work tackles both extreme poverty and climate change through technology. Our main product is the Treetracker, a mobile app that allows planting organizations and their donors to track the growth of newly planted trees through periodic geotagged photos. 

The project is at a really exciting stage and has been recently elevated to a Supporting Partner for the United Nations Decade on Ecosystem Restoration. This could not be done without many amazing people contributing their skills and time from around the world. 


Read more about our work on 


To apply 

Please follow the link below and fill out the sign-up form and a Greenstand team member will be in touch soon.

Organization Type


Organization Size



Climate Risk, Ecosystems & Biodiversity