David Lemayian
Regional Director, Eastern And Southern Africa Open Mapping Hub at Humanitarian OpenStreetMap Team
Nairobi, Nairobi County, Kenya
Summary
🤩
Rockstar🎓
Top SchoolDavid Lemayian is a seasoned technology leader and founder with 13 years building civic tech, open-data and investigative tools across Africa, now serving as Regional Director for the Eastern & Southern Africa Open Mapping Hub. He combines hands-on full‑stack engineering—contributing to notable open-source projects like DocumentCloud and Aleph—with strategic advisory work for governments, NGOs and multilateral organisations. As founder of Tenery Research he applies AI, IoT, drones and remote sensing to climate, governance and public service challenges, while his advisory portfolio has shaped national AI strategy and election integrity tools. A former CTO of Code for Africa, he built continent-spanning engineering and forensic data labs that powered investigations like Panama Papers and citizen-facing platforms used by hundreds of thousands. He blends technical depth with product and policy fluency, and an unusual mix of skills that includes drone and helicopter training alongside enterprise software practice.
14 years of coding experience
7 years of employment as a software developer
BBIT, Business and I.T., BBIT, Business and I.T. at Strathmore UniversityUnmanned Aircraft Systems (Drones), Unmanned Aircraft Systems (Drones) at Drone Space KenyaHelicopter License, Aircraft Pilot (Private), Helicopter License, Aircraft Pilot (Private) at BAC HelicopterKCSE, Math, Physics, English, Kiswahili,, Chemistry, Biology, Geography, KCSE, Math, Physics, English, Kiswahili,, Chemistry, Biology, Geography at Strathmore School
English, Swahili
Stackoverflow
2,739reputation
528kreached
19answers
0questions
timeout
top-1%
symfony
top-5%
php
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laravel
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queue
top-1%
twitter-bootstrap
top-5%
Github Skills (39)
javascript10
python10
amazon-elasticsearch10
timeout10
elasticsearchquery10
web-search10
aws-elasticsearch10
aws10
text-search10
elasticsearch10
queue10
elasticsearch-api10
osi9
twitter-bootstrap9
laravel9
Programming languages (17)
Github contributions (5)
documentcloud/documentcloud
May 2014 - Jan 2019
The DocumentCloud platform
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:19 commits, 13 PRs, 1 push in 4 years 8 months
Contributions summary:David made several updates across the DocumentCloud platform. They updated backend configurations related to AWS S3 storage and region settings, indicating familiarity with cloud infrastructure. They also made changes to front-end JavaScript code related to the UI, specifically the toolbar, and updated the application to use SSL for the login page, and also removed Stripe javascript. These commits demonstrate a range of skills across both front-end and back-end development.
documentcloud
alephdata/aleph
Feb 2016 - Dec 2018
Search and browse documents and data; find the people and companies you look for.
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:16 commits, 4 PRs, 2 branches in 2 years 10 months
Contributions summary:David contributed to the `aleph` project, a data search and browsing application. Their work involved changes across the front-end and back-end, including modifications to the search controller, text viewer, and tabular data components. Significant changes were made to the Python-based back-end, including crawlers and the core analysis components, reflecting a broad involvement in the project's functionality and data processing capabilities. Furthermore, the user adjusted settings and configurations, implying the capacity to handle deployments and environment setup.
lookinvestigative-journalismpythondata-searchgraph-database
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