Software Developer · The Gambia

Building systems that hold up in the real world.

I design and build full-stack web platforms, offline-first mobile apps, and data-driven tools — modeled with Domain-Driven Design so they stay reliable as they grow, and as AI gets woven into how they work.

Stack  Node.js · TypeScript · Next.js · KotlinFocus  Web · Mobile · AI · DataBased in  The Gambia, West Africa
01

Domain-driven architecture

Every system starts as a model of the real process it supports — bounded contexts, clear aggregates, and boundaries that keep growth from turning into a mess.

02

Built for real conditions

Field teams don't always have signal. I build offline-first by default — local storage, background sync, and interfaces that keep working when the network doesn't.

03

End-to-end delivery

From data model to deployed product — backend, frontend, mobile, and the pipelines that ship it — one person who can own the whole build.

04

AI where it earns its place

Not AI for its own sake — assistants, automation, and generated reports layered onto a system only once the fundamentals underneath it are solid.

Why it holds up

Software that keeps working after launch day.

Built for real institutions

Production systems used daily by a government agency and its field teams — not portfolio demos.

End-to-end ownership

From data modeling to deployment, one person accountable for the whole build, start to finish.

Works where connectivity doesn't

Offline-first by default, so field teams in low-signal areas are never blocked from doing their job.

A stack built to last

TypeScript, tested, and documented — code the next developer on the team can actually pick up.

Capabilities

Four domains, one way of building.

I borrow the language of Domain-Driven Design for how I organize skills too — each area below is a domain I can own from architecture to launch.

Domain: Web

Web platforms

Full-stack applications and dashboards — from public-facing sites to internal admin systems, built with clean DDD-structured backends in TypeScript or Python.

Next.jsExpressFastAPITypeScriptPython
Domain: Mobile

Mobile systems

Offline-first Android apps for field work — photo and GPS capture, local databases, and background sync back to a live backend.

KotlinJetpack ComposeRoomRetrofit
Domain: AI

AI & automation

Embedding AI where it earns its place — assistants, document and report automation, and intelligent workflows layered on top of solid systems.

LLM integrationAutomationAPIs
Domain: Data

Data & analytics

Turning raw records into decisions — realtime dashboards, exportable reports, and analytics views built on top of production data.

RechartsPythonSupabase RealtimeReporting

Working stack

Tools I reach for
TSTypeScript
NxNext.js
PyPython
FaFastAPI
KtKotlin
TwTailwind CSS
PgPostgreSQL
MyMySQL
DoDocker
NdNode.js
Also in the toolkit
ExpressJetpack ComposeJavaSupabasePrismaVercelRailwayJestPlaywright
Selected work

Systems built and shipped.

A mix of public-sector platforms and independent builds — each one modeled, built, and deployed end to end.

Abstract network representing a connected system of applications
Public sector · Visitor management

Visitor management platform

A paperless visitor registration system built for a government agency, replacing a manual, Excel-based front-desk register with a single digital system used across every department.

  • 100% digital check-in across 27 departments, with secure staff email & password sign-in
  • Live analytics dashboard tracking visitor traffic and department activity in real time
  • DDD-structured Node.js/Express backend with a Next.js frontend, deployed on Railway and Vercel
Next.jsExpressPrisma
A hand checking off items on a digital tablet checklist
Public sector · Field operations

Field inspection & compliance suite

An offline-first system for a government agency's field teams, pairing a mobile inspection app with automated compliance reporting and a permit & licensing workflow.

  • Offline-first Android inspection app — GPS-tagged findings, photo capture, and background sync
  • Automated, branded PDF compliance reports generated straight from field data
  • Permit & licensing workflow built around the same domain model
  • DDD-structured Node.js/Express backend, deployed on Railway and Vercel
KotlinExpressPrisma
Warehouse aisles of stocked shelving, representing a logistics and fleet system
Public sector · Logistics & fleet

Logistics & fleet management platform

A platform built for a government agency to bring real-time visibility to shipments, vehicles, and warehouse stock — replacing manual tracking with a single connected system.

  • Real-time shipment visibility and route optimization across the agency's fleet
  • Warehouse and inventory management with live stock levels
  • Sustainability tracking built into day-to-day reporting
  • Analytics dashboards summarizing operations for decision-makers
Next.jsTypeScriptTailwind CSS
Screenshot of the GamFoot homepage
Independent build · Community platform

Gambia Sports Platform — GamFoot

A multi-tenant platform for managing Nawettan (community football) tournaments across The Gambia — built independently, end to end, as a personal initiative under TechPalz.

  • Super Admin, Community Admin, and Fan roles across 10 seeded Gambian communities
  • Live scores and tournament brackets powered by Supabase Realtime
  • Full player, team, and admin-invitation management with custom transactional email
Next.js 16SupabaseTailwind CSS
Code displayed on a developer's screen
Public sector · Web & CMS

Public-sector website & CMS rebuild

A full redevelopment of a government agency's public website, moving it onto a modern headless CMS and presenting the rebuild directly to board-level stakeholders.

  • Next.js frontend paired with a headless CMS for editable, non-technical content updates
  • Built in partnership with an in-house colleague and an external delivery partner
Next.jsHeadless CMS
Collaborate

Room to build together.

I like working alongside other developers, designers, and domain experts — not just shipping alone. GamFoot’s repo is public, so jump straight in there. The other two live in a private repo — just say hello and I’ll add you as a reviewer.

Gambia Sports Platform

GamFoot

A growing multi-tenant platform for Nawettan tournaments — more communities, live-score improvements, and a better fan experience are all open ground.

Next.jsSupabaseTypeScript
View on GitHub ↗
Next.js + DDD reference build

This portfolio

The site you're on, including the AI chat pod and the DDD layering. The repo is private, but I'm happy to add reviewers who want to see the architecture and suggest changes.

Next.jsTypeScriptTailwind CSS
Ask for repo access ↗
Python / FastAPI example

Fixture Scheduling Service

A small DDD-layered FastAPI service that lives in the same private repo. Ideas welcome: a real persistence adapter, auth, or extending the domain beyond fixture scheduling.

PythonFastAPI
Ask for repo access ↗

Have a different idea for us to work on?

Let’s talk
How I work

From domain model to deployed product.

The same sequence every time — it’s what keeps systems maintainable once they’re out of my hands.

Model

Discover & model

Map the real-world process first — the entities, rules, and edge cases — before a line of code is written.

Architect

Design the domain

Turn the model into bounded contexts and aggregates, so each part of the system has a clear, single responsibility.

Build

Build end to end

Backend, frontend, and mobile together — built in step so nothing is bolted on after the fact.

Ship

Test & deploy

Automated tests, then a real deployment pipeline — not a demo that only works on one machine.

Support

Iterate & support

Software meets real usage and real feedback. I stay on to fix, extend, and scale it.

Mass Jammeh
About

Mass Jammeh

I’m a software developer based in The Gambia, working across web, mobile, AI, and data. Most of my production work has been building digital systems for public institutions — the kind of software that has to work reliably for people who aren’t especially technical, often in places with unreliable connectivity.

That’s shaped how I build: offline-first where it matters, modeled with Domain-Driven Design so systems stay understandable as they grow, and shipped as complete products — not just prototypes. Alongside that, I co-founded a technology venture building automated digital solutions for institutions across West Africa, and I keep a handful of independent projects running for the same reason most developers do: to build the things I think should exist.

Location
The Gambia, West Africa
Focus
Web · Mobile · AI · Data
Primary stack
Node.js / TypeScript
Approach
Domain-Driven Design
Skills

What I bring beyond the stack.

Alongside the tools listed above, these are the broader areas I work in — from AI and data to native mobile development.

AI & Machine Learning

Machine learning and deep learning, including practical AI integration — from classical models like Random Forest and SVM classifiers to applying AI where it earns its place inside production systems.

Machine LearningDeep LearningRandom ForestSVMAI Integration

Software Development

Full-stack development across web, desktop, and Android — comfortable owning a build from data model to deployed product.

Full-stack DevelopmentWebDesktopAndroid

Mobile Development

Native Android apps built with Jetpack Compose, designed offline-first so field conditions and unreliable connectivity don't break the experience.

KotlinJavaJetpack ComposeOffline-first

Data & Analysis

SQL-driven data management and analysis — from telecom subscriber databases to reporting and data-driven problem solving.

SQLData ManagementData AnalysisReporting

Networking & Security

Computer networking, configuration, and troubleshooting — including hardware and IT support — plus basic cybersecurity practices.

NetworkingIP ConfigurationTroubleshootingIT Support

Problem Solving & Communication

Strong analytical and mathematical problem-solving, paired with clear written and verbal communication across technical and non-technical teams.

Analytical ThinkingMathematicsTechnical CommunicationCross-team Collaboration
Get in touch

Have a project in mind?

Whether it’s a full platform, a mobile app, or a system that needs AI woven in — I’m glad to talk through what you’re building.