Climate • Data • Technology

Jimmy Edward Matewere

Building the tools that turn climate data into decisions

I build climate risk models, geospatial platforms, and tools for national climate data. Currently a Graduate Intern at Malawi's Department of Climate Change and Meteorological Services, where I build tools like Nimbus Forecast to process climate data across 100+ stations, alongside serving as Founding CTO of Ascend Spatial Labs, a geospatial intelligence startup.

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What I Build

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Afrimax Malawi Website Rebuild

Full marketing site rebuild for Afrimax Malawi, a Blantyre-based ISP. Built with Next.js, Sanity CMS, Mapbox GL JS, and Tailwind v4. CMS-driven plans, devices, payment methods, resellers, and coverage map. Deployed to Vercel.

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Malawi Climate Risk Dashboard

National climate risk assessment platform scoring all 28 Malawian districts using the IPCC AR5 framework. Combines NASA POWER climate data, World Bank socioeconomic indicators, and EM-DAT disaster records into a composite risk index, visualised through an interactive Mapbox GL JS map with district-level breakdown panels.

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Nimbus Forecast

Nimbus Forecast is a modern meteorological platform designed to upgrade how national weather information is processed, visualized, and distributed. Developed specifically for Malawi's Department of Climate Change and Meteorological Services (DCCMS), the system acts as a digital bridge between raw observational weather data and the public end-users who rely on it, such as smallholder farmers, disaster management teams, and aviation authorities.

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Latest Insights

Apr 22, 2026

Nimbus Forecast: From Manual yr.no Lookups to a Deployed Platform at DCCMS

From a manual yr.no lookup across 99 stations to a multi-model rainfall forecast platform in operational use at DCCMS. The story of Nimbus Forecast.

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Want to work together?

Whether it's a climate data system, a geospatial platform, or a full-stack product — reach out and let's talk through what you're building.

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