William Jefferson Mensah
Software Engineer at Upwork
Accra, Greater Accra Region, Ghana
Summary
William Mensah is a Senior Software Engineer with 4 years’ experience designing and operating high-throughput distributed systems and scalable backend infrastructure, currently driving backend architecture at Complete Farmer to support 60,000+ smallholder farmers. He specializes in performance, reliability, and fault-tolerant designs using ASP.NET Core, Python, Node.js, AWS/GCP, MongoDB, and Kubernetes, and has a track record of improving scalability and reducing latency across production platforms. William has built AI-aware pipelines for real-time voice applications (STT/LLM/TTS) and led migrations that improved connectivity and autoscaling for mission-critical services. He cares about developer velocity and operational excellence, pairing pragmatic system design with hands-on implementation and client-facing delivery. Based in Accra and open to remote roles, he combines a production-first mindset with a knack for turning fragile systems into maintainable, high-throughput platforms.
5 years of coding experience
Github Skills (15)
designer9
theme-ui8
gatsbyjs8
parallax8
react6
gatsby5
mdx5
react-spring4
sqlalchemy3
agriculture2
fastapi2
non-relational-database2
python2
backend1
grpc1
Programming languages (5)
Github contributions (5)
cuuj69/School-site
Jul 2022 - Nov 2022
Contributions:5 commits, 4 pushes, 2 issues in 4 months
cuuj69/resume-site
Aug 2023 - Dec 2025
Minimal and formal résumé (CV) website template for print, mobile, and desktop. https://bit.ly/ur_demo
Contributions:11 pushes, 1 branch in 2 years 4 months
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