Green-Irrigate Ghana
Built a map-centric platform that helps agricultural extension officers and farmers assess solar irrigation feasibility for smallholder farms.
Abdul Salam Issahaku
Software Developer
I build open digital infrastructure at the intersection of sustainability, AI, and data interoperability. My work spans geospatial platforms, AI-powered decision tools, and open sustainability analytics across the Global South.
Projects
Agrospectrum Website.
A cooperate website for Agrospectrum Ltd. using Next.js, Tailwind, Figma, and Strapi.
improving brand presence and client engagement
Fiber Backbone Network Manager
Built at Broadspectrum.
A geospatial management system for visualizing a subsidiary's fiber infrastructure, mapping points of presence and routes using Next.js and React-Leaflet
Mindgraph Research
An AI that transforms research papers into knowledge graphs, helping users quickly understand complex fields, identify seminal works, and uncover novel research opportunities.
Tarvan.AI
An NFT gaming marketplace. Integrated FastAPI-based AI agent for real-time price updates driven by market activity.
The Voiceless Online - News Platform
A full-stack news publication platform, achieved 10,000+ unique page views within 2 months.
Learning Management System
An LMS supporting online course delivery, discussion forums, and video conferencing for 100+ users. Executed complex state management using React Context API.
Inventory Manager
A full-stack inventory management system, providing real-time tracking of inventory, sales, and user accounts through a responsive interface.
Latest Blogs
Introducing OpenSustain Analytics: Now We Can Finally Quantify the Role of Open Source in the Climate Movement.
I’ve always asked myself as a developer whether my code is actually contributing to sustainability or the other way around: running on...
How Volunteers Power the Climate Intelligence of Generative AI Models
Public online datasets for AI model pre-training and fine-tuning have evolved from generic web-scraping to precision harvesting...
Coding Tutorial 2: Building a Real-Time Chat App with Socket.io and ReactJS : Part 1
Good day, devs! Today let's have a walkthrough on how chat apps are created with socket.io. The technologies I will be using in this tutorial are ReactJS and NodeJS...
Today I Learned
Mean Reciprocal Rank (MRR)
Top-1 accuracy is all-or-nothing: a ranker that puts the right answer second scores exactly zero. MRR grades the whole ranking instead; take the reciprocal of the position where the correct answer landed (1st → 1.0, 2nd → 0.5, 4th → 0.25, missing → 0) and average it across all queries. Handy intuition: 1 ÷ MRR ≈ where the right answer typically sits in the list. I met it while comparing a lexical name-matcher against a sentence-transformer for ranking schema-field suggestions: their top-1 counts were close, but MRR (0.48 vs 0.60) revealed the model was missing higher up the list, which is the metric that actually matters when a human confirms answers from a ranked list
Thresholded abstention
A classifier should decline to predict when its confidence falls below a threshold, trading coverage for accuracy. The modern literature calls it selective prediction / selective classification (Geifman & El-Yaniv, 2017), and related framings include open-set recognition and out-of-distribution detection, all variants of "know when none of your known answers apply.
About
I'm a software developer and open source contributor building infrastructure that makes environmental data trustworthy and actionable.
My work sits at the intersection of sustainability technology, AI systems, and data interoperability. I build full-stack systems across agritech, fintech, and AI-driven platforms. I work primarily in React, Next.js, TypeScript, FastAPI, and Python, with PostGIS for spatial data and LangChain for AI integration.
I care about building systems that hold up under real conditions, not just technically, but epistemically.
Skills
- Programming Languages
- Python, Javascript
- Frontend
- React.js, Next.js, TypeScript, Tailwind CSS, Responsive Design.
- Backend
- Node.js, FastAPI, tRPC, Prisma
- Databases
- MySQL, PostgreSQL, MongoDB, SQLite
- Cloud & DevOps
- AWS, Docker, Git, DigitalOcean, Render
- Web3
- Wagmi, Smart Contract Integration
- Other
- Technical Writing
Experience
Open Source Contributor
Open Sustainable Technology Germany • October 2025 - Present
Contributing to a directory and analysis of the open source ecosystem covering climate change, sustainable energy, biodiversity, and natural resources. Refactored a monolithic codebase into modular components and contributed to the project's analytics dashboard.
Software Developer
Broadspectrum Limited Ghana • November 2023 - Present
I work across internal and external agritech systems, owning the frontend development of an agent onboarding portal and agribusiness admin platform, and building a fiber backbone network management system with geospatial visualization. I designed a schema-driven dynamic data collection engine that lets non-technical users create complex forms with conditional logic, and spearheaded the integration of generative AI into the company's products. I also built a fully responsive subsidiary website using Next.js, Tailwind, and Strapi. Owned the frontend development of a multi-tenant agricultural subsidy management platform. Which handles farmer registration, input distribution, program management, marketplace transactions, financial reporting, and field monitoring across multiple organizations and languages.
Frontend Developer
SoftinHub • December 2023 - May 2025
Contributed to the incremental frontend development of an online retail marketplace, delivering feature updates and UI improvements that enhanced the shopping and checkout experience.
Technology Instructor Intern
OpenLabs Ghana • August 2022 - January 2023
Taught an introductory software development course using Python, guiding students through fundamentals with a 100% pass rate.