Valence MwiganiFull-stack engineer
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Engineering work

Ten platforms delivered and running in production, across e-commerce, B2B trade, management systems, publishing, corporate platforms and professional portfolios.

Case studies

Three systems, examined in depth

Problem, architecture, engineering decisions and outcome for the platforms with the most technical substance.

The HANZO B2B marketplace homepage, showing product search, currency and language selectors, and a trending-products catalogue

B2B marketplace · full-stack platform

HANZO B2B Marketplace

A privacy-focused trade platform connecting East African buyers with verified Chinese factories through separate buyer, factory and admin workflows.

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Role
System architecture, full-stack implementation, database design, API integration, payment workflows, deployment and maintenance.
Stack
Next.js · Laravel · MySQL · REST APIs
Status
Live in production
The CrossLife platform homepage, showing the main navigation across ministries, sermons, discipleship and events

Management & learning platform

CrossLife Platform

A church management, communication and digital learning platform covering events, ministries, lessons, materials and administration.

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Role
Full-stack development, backend dashboards, data workflows, learning functionality and automated email notifications.
Stack
PHP · MySQL · PHPMailer · Bootstrap
Status
Live in production
The ChargedAfrica publishing platform homepage, showing the article layout and newsletter subscription entry point

Publishing & newsletter platform

ChargedAfrica

A technology publishing platform covering e-mobility, fintech, innovation and digital transformation across Africa.

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Role
Application development, subscription and content workflows, email integration, technical SEO, deployment and maintenance.
Stack
PHP · MySQL · PHPMailer · Technical SEO
Status
Live in production

Full index

Every platform

10 projects

ProjectTypeStackYearStatus
Movement99 E-commerce · brand storefront Next.js · React · Vercel 2026 Live in production
HANZO B2B Marketplace B2B marketplace · full-stack platform Next.js · Laravel · MySQL · REST APIs 2025 Live in production
CrossLife Platform Management & learning platform PHP · MySQL · PHPMailer · Bootstrap 2025 Live in production
ChargedAfrica Publishing & newsletter platform PHP · MySQL · PHPMailer · Technical SEO 2025 Live in production
Bossify Academy Training & registration platform Next.js · PHP · Snippe Payments · Mambo SMS 2025 Live in production
Proma Africa Corporate & property platform PHP · MySQL · JavaScript · Bootstrap 2025 Live in production
Digital Economy Africa Organisational platform PHP · MySQL · Bootstrap · Search Console 2024 Live in production
Sparkcraft Consulting Consulting & technology platform PHP · MySQL · JavaScript · Technical SEO 2024 Live in production
Peter Mkwawa Portfolio Professional portfolio HTML · CSS · JavaScript · PHP 2024 Live in production
Michelle Mugo Portfolio Professional portfolio Responsive UI · Video integration · SEO 2024 Live in production

Source code for client platforms is private. Live URLs are linked above; personal repositories are on GitHub.

Next step

Have a system to build, extend, or take over?

I take on full-stack product work, backend and API development, and long-term ownership of platforms already running in production.

Start a conversation View engineering work