Caleb Mantey
Co-Founder CTO at Zenjob
Greater Accra Region, Ghana
Summary
👤
Senior🎓
Top SchoolCaleb Mantey is a versatile Co-Founder and CTO with eight years of hands-on experience building web, mobile, XR/AR/VR and game applications, and a strong backend focus in Ruby and JavaScript ecosystems. He blends product-minded engineering with immersive tech expertise—leading development of VR training simulations, digital twins and Web3D experiences while architecting scalable backends and CI/CD pipelines. Caleb has shipped production systems across startups and agencies, integrating AI/LLM tooling more recently at Zenjob and Think-it to automate workflows and enhance products. Comfortable from Unity and Unreal to NestJS, Rails and FastAPI, he pairs frontend/mobile fluency with deep systems experience and a track record of mentoring teams and running developer training. Based in Accra, he brings an uncommon mix of geomatics training and spatial tech applied to XR and simulation projects that create measurable operational impact.
8 years of coding experience
7 years of employment as a software developer
Bachelor's degree Geomatic Engineering , Bachelor's degree Geomatic Engineering at University of Mines and Technology, TarkwaGeneral Science, General Science at Bishop Herman College 
English
Stackoverflow
76reputation
1kreached
1answer
0questions
Github Skills (22)
boilerplate8
phash8
generator7
cli6
event-emitter6
duplicate6
ruby-wrapper6
nestjs6
react5
hash5
react-native5
image-analysis5
perceptual5
mongoose4
typescript4
Programming languages (3)
Github contributions (5)
Caleb-Mantey/Caleb-Mantey.github.io
Apr 2020 - Mar 2025
Contributions:6 pushes, 1 branch in 5 years
Caleb-Mantey/joy_ussd_engine
Mar 2022 - Jul 2022
Contributions:54 commits, 42 pushes, 1 branch in 3 months
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