Welcome to my portfolio
Hi, I'm Jeffrey Misigo
Data scientist and software engineer — I build modern web applications with clean code and great user experiences, and convert raw data into information that supports decision-making, forecasting, and strategic planning.
About Me
Get to know me a little better
I'm a passionate full-stack developer with over 2 years of experience building web applications. I specialize in React, Next.js, and Node.js, and I love creating elegant solutions to complex problems. I am slowly transitioning into data science and machine learning, and I am excited about the possibilities of using data to drive insights and create impactful solutions.
When I'm not coding, you can find me contributing to open-source projects, writing technical blog posts, or exploring new technologies. I believe in writing clean, maintainable code and building products that make a difference.
Featured Projects
A selection of projects I'm most proud of
County Revenue Dashboard
A Power BI dashboard for tracking county government revenue streams, budget allocations, and expenditure trends with interactive drill-down reports.
ML Loan Default Predictor
A machine learning pipeline that predicts loan defaults using XGBoost and scikit-learn. Includes data preprocessing, feature engineering, and a Streamlit dashboard.
E-Commerce Platform
A full-stack e-commerce platform built with Next.js, Stripe, and PostgreSQL. Features include product catalog, cart management, and secure checkout.
Real-Time Chat Application
A real-time messaging application with WebSocket support, user authentication, and message encryption.
Skills
Technologies and tools I work with
Languages
Frameworks
Tools
Other
Tech Stack
Technologies I use daily
Experience
My professional journey
Financial analyst
Institute of Electrical and Electronics Engineers (IEEE) · Eldoret, Kenya
- Built financial models to estimate future performance.
- Analyzed financial data to identify trends and make recommendations.
- Implemented data visualization dashboards with Power BI, improving financial reporting efficiency by 40%.
- Helped with budgeting and forecasting, providing insights that led to a 15% reduction in costs.
Attaché (Developer)
Uasin Gishu County Government · Eldoret, Kenya
- Built and maintained a customer-facing SaaS dashboard serving 10,000+ monthly active users using React and Node.js.
- Designed RESTful and GraphQL APIs with Express and PostgreSQL, achieving 99.9% uptime.
- Integrated Daraja api(m-pesa) with sisibopay, handling over 2M ksh in annual transactions.
- Collaborated closely with product and design teams to ship features on a two-week sprint cycle.
Junior Developer
University of Eldoret · Eldoret, Kenya
- Developed responsive websites and web applications for clients across e-commerce, healthcare, and education sectors.
- Wrote clean, well-tested code with Jest and React Testing Library, maintaining 90%+ code coverage.
- Optimized frontend performance through lazy loading, code splitting, and image optimization techniques.
- Participated in agile ceremonies and contributed to continuous improvement of team development workflows.
- Collaborated with junior developers through code reviews, pair programming, and weekly knowledge-sharing sessions.
Events
Tech events and conferences I've attended
Google DevFest Eldoret 2024
Annual developer festival organized by GDG Eldoret featuring talks on AI/ML, web, cloud, and mobile development.
Key Takeaways
- Hands-on codelab on building with Gemini API and Vertex AI
- Best practices for deploying ML models to production with GCP
- Networking with 200+ developers from the Rift Valley tech community
Kimbia Eld - World Kidney day run
Eldoret largest athelete organization that organizes runs and marathons in Eldoret and the greater rift valley region. I participated in the world kidney day run organized by Kimbia Eld to raise awareness about kidney health and support local healthcare initiatives.
Key Takeaways
- Discussion on the importance of kidney health and early detection of kidney disease
- Participated in a 5K run with over 200 participants from the local community
- Connected with local healthcare professionals and organizations working to improve kidney health in the community
Payhero - University of Eldoret Hackathon
The payhero hackathon was an 8-hour event organized by the University of Eldoret in partnership with Payhero, a leading fintech company in Kenya. The hackathon challenged participants to build innovative solutions for financial inclusion using Payhero’s APIs.
Key Takeaways
- Built a prototype of a matatu app that allows users to pay for transportation using mobile money, improving accessibility for unbanked populations
- Collaborated with a team of 4 developers to create a functional MVP within the 8-hour timeframe which secured 1st place in the hackathon and a cash prize of 20,000 KES
- Met Intellectual property Management experts who provided insights on how to protect and commercialize our hackathon project, leading to the decision to pursue further development and potential startup formation around the matatu app concept
IEEE Xtreme 18.0 Programming Competition
A 24-hour global competitive programming challenge organized by IEEE, solving algorithmic problems under time pressure.
Key Takeaways
- Sharpened skills in dynamic programming and graph algorithms
- Effective team coordination under extreme time constraints
- Exposure to real-world problem-solving scenarios