Mutugi

Polyglot engineer building impactful software from Nairobi, Kenya.

Links

  • Skills
  • Projects
  • Experience
  • Impact
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Contact

  • colrium@gmail.com
  • github.com/colrium
  • linkedin.com/in/colrium

© 2026 Mutugi. All rights reserved.

Selected Work

Practical Systems Shipped Across Organizations, Sports, Health, Transport, Finance, and Climate

A few examples from product work and personal experiments, grounded in real users, real constraints, and measurable outcomes.

Screenshots

A look at the work

Project screenshots and interfaces from recent builds.

Grand Master Ledger

Grand Master Ledger

ECO Calc

ECO Calc

ECO Calc 2

ECO Calc 2

Afrigold Hub

Afrigold Hub

Anthropodata

Anthropodata

Selected Work

Practical systems shipped across organizations, sports, health, transport, finance, and climate sectors.

A few examples from product work and personal experiments, grounded in real users, real constraints, and measurable outcomes.

Chess Analysis Platform

Grand Master Ledger

Built a comprehensive chess analysis experience that connects with chess.com and Lichess to track improvement over time, surface key patterns in gameplay, and bring Stockfish-powered insight into a personal coaching workflow.

  • Integrated multiple chess platforms through custom APIs and data pipelines.
  • Combined engine analysis with performance history to generate tailored improvement suggestions.
  • Designed the experience around practical coaching use cases rather than raw data dumps.

Gives players a clearer view of their growth and helps them focus on the areas that matter most.

PythonNext.jsNode.jsStockfishAPI Integration
Cab Hailing Platform

Creuse

Built a Kenyan alternative to ride-hailing services that made it easier for drivers and riders to connect, coordinate journeys, and complete payments with familiar local methods.

  • Shaped the platform around local user behavior, taxi workflows, and mobile-first access.
  • Supported real-time request flows and transaction handling in a constrained environment.
  • Balanced a strong product experience with operational reliability and fast iteration.

Delivered a functional transport platform tailored to local market needs and practical user workflows.

PHPLaravelKotlinMobile DevelopmentReal-time SystemsM-PESA
Data Export Software

CAT (Connect Assure Technology)

Developed software that enables compliant data export across compatible STERIS products and leading instrument-tracking systems, helping teams keep records synchronized without manual friction.

  • Built integrations that aligned with healthcare and compliance requirements.
  • Simplified cross-system handoffs for teams managing regulated operational data.
  • Improved consistency and traceability in workflows that previously relied on manual exports.

Enabled reliable data synchronization across facility management environments and strengthened workflow confidence.

Data IntegrationComplianceAPI DevelopmentSTERIS Systems
Custom Product Build

Non-Profits CRM

Designed and implemented a custom CRM solution for ActionAid Kenya, translating organizational processes into a product that could be used day to day by staff and partners.

  • Worked from operational requirements rather than generic business templates.
  • Structured the system around nonprofit workflows, reporting needs, and team collaboration.
  • Focused on making the tool useful in the field rather than only polished in theory.

Turned organization-specific requirements into a shipped operational tool that matched real needs.

Full-Stack DevelopmentProduct ThinkingAPI DesignQA
Web and Mobile Platform

Fixed Assets Tracker

Created a fixed-assets platform that helps teams manage asset movement, allocation, depreciation schedules, and visibility across multiple stakeholders in one place.

  • Supported both web and mobile experiences for different operational contexts.
  • Built around data accuracy, traceability, and recurring reporting needs.
  • Scaled to support a large installed client base with over one million tracked assets.

Shipped to roughly 30 clients and continues to support more than one million assets in active use.

WebMobileDatabasesAutomation
GHG Emissions and Projections Calculator

ECO Calc

Built a proof of concept for greenhouse gas emissions accounting and projection, turning environmental inputs into understandable estimates and a clear user experience for exploration.

  • Explored climate-accounting workflows through a practical calculator interface.
  • Focused on turning abstract sustainability metrics into user-friendly output.
  • Used the prototype to test assumptions and surface the next steps for a fuller product direction.

Opened a useful path for exploring climate-accounting workflows in an accessible way.

PrototypingData ModelingProduct DesignReporting
Best Fit

Where I can plug in and create momentum.

Useful for recruiters, founders, and teams who need to quickly understand the kind of work that matches my background.

Remote Product Engineering

Feature delivery, refactoring, code review, API work, and frontend systems inside distributed teams.

AI Automation Contracts

Short, focused automation builds for documentation, testing, prototyping, search, and productivity workflows.

Mobile and Field Tools

React Native, Android, and iOS delivery for teams that need reliable mobile workflows in production.

Technical Leadership

Architecture notes, migration planning, mentoring, delivery hygiene, and maintainable team practices.