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Jadline Njeri
Section
§00 / Opening
Publication
Notebook N° 01
Based in
Nairobi, Kenya
Status
Building JADN LABS · Available for freelance projects

JadlineNjeri.

Portrait of Jadline Njeri
Fig. 0 — The author

Published by

JADN LABS: Building software that solves real problems.

Mathematician by training.
Builder by practice.

I study how things work, model them, and build the software that runs them. JADN LABS is the studio where I build my own.

Selected workWrite to me

§01/The author

I came to software through mathematics.

Industrial Mathematics taught me to look for the structure inside a messy problem: the variables, the relationships, the constraint that matters most. Software is how I give that structure a form other people can use.

That path runs from cleaning field data to building production software, and now to JADN LABS, where the questions are my own.

Portrait of Jadline Njeri
Fig. 1Graduation, Industrial Mathematics
Training
BSc Industrial Mathematics
JKUAT · Second Class Upper Division
First data
Data Analyst Intern
Del Monte Kenya
Systems
Full-stack Engineer
PneusQuebec · OLT Group Inc. · Until end of September 2026
Studio
Founder
JADN LABS
Based
Nairobi, Kenya
Works remotely

§02/Method

Every project runs the same loop.

Mathematics, data and software are three languages for one way of working. Choose a stage to see where it shaped real work.

↺ iterate returns to observe

Start from what is actually happening, not from the solution.

At Del Monte Kenya, the work began in the field: plant monitoring data had to be cleaned and understood before any trend could be trusted.

Data Analyst Intern, Del Monte Kenya

§03/Selected work

17 entries from the notebook, by who they were for.

Professional01

Professional

Built as part of an engineering team, in a job.

Open in the index
Client work04

Client work

Built for a real business.

Open in the index
JADN LABS05

JADN LABS

My own products and experiments.

See all 5
Study07

Study

Coursework, challenges and practice builds.

See all 7

Entry 02ProfessionalSystemUntil 2026PneusQuebec · OLT Group Inc.

SaaS ERP Platform

Multi-tenant software that runs importing, trucking, logistics, freight-forwarding and distribution businesses: connected modules on one shared data model, from supplier orders and incoming containers to warehouse stock, sales and the books.

RoleFull-stack engineer, as part of the engineering team

PostgreSQL · WebSockets · Webhooks · Tailwind CSS · Modern JavaScript frameworks

A. Supply

  • Supplier Portal
  • Shipping Portal

B. Operations

  • Warehouse (WMS + 3PL)
  • Transport (TMS)
  • Tradesmen

C. Commerce

  • Dynamic Pricing
  • Sales CRM
  • B2B Portal
  • Marketing
  • Customer Service

D. Finance

  • Accounting
  • QuickBooks Online sync

Tenancy

one workspace per business

Events

webhooks · websockets

Record

PostgreSQL
Fig. — SaaS ERP Platform, module map

Entry 04Client workProduct2026Hair-care brand · version 2

MinoxidilKe

An online shop for Minoxidil and hair-growth products in Kenya. A Next.js store with guest checkout, order tracking and an admin dashboard, live on the brand’s own domain.

Next.js 16 · React 19 · TypeScript · Tailwind CSS 4 · MongoDB (Mongoose) · Zustand · Zod · Headless UI · Vitest · Playwright

MinoxidilKe interface
Fig. — MinoxidilKe
Suntrail Adventures interface

Entry 15Client workProduct2026Suntrail Adventures

Suntrail Adventures

A booking website and CMS for a Kenyan safari operator. Travellers browse tours and destinations, plan a trip or book a departure, and staff run bookings, payments, reviews and travel guides from one dashboard.

Next.js 16 · React 19 · TypeScript · Tailwind CSS 4 · PostgreSQL (Supabase) · Prisma · TanStack Query · React Router · Tiptap · Motion · Zod · Vitest

Entry 16Client workProduct2026Hotel & resort · Mbale, Vihiga County

Vectors Resort

A website and booking system for a resort in Mbale, Vihiga County: guests browse rooms and request stays online, and staff run reservations, content and email from their own dashboard.

Next.js 15 · React 19 · Supabase · Bootstrap 5 · Swiper · Tiptap · Zod · Playwright

Vectors Resort interface
Fig. — Vectors Resort

Entry 17Client workProduct2026Art & craft collective · The Hub Karen, Nairobi

Hadithi Hadithi

An online market for an art and craft collective in Nairobi: visitors browse and order handmade work from the artists, and the team runs orders, stock, artists and promotions from one dashboard.

Next.js 15 · React 18 · PostgreSQL (Supabase) · Bootstrap 5 · react-pageflip · Puppeteer · Fancybox · Node test runner

Hadithi Hadithi interface
Fig. — Hadithi Hadithi
The complete indexAll 17 entries

§04/The studio

JADN LABS: Building software that solves real problems.

Inside the lab

JADN LABS is where I build my own things: products, systems and experiments that start as questions and end as software.

P1

Real problems first

Every build starts from a situation worth improving, not from a technology looking for a use.

P2

Systems over screens

Model the moving parts and how they connect; the interface is the last layer, not the first.

P3

Ship, then iterate

Experiments are allowed to be unfinished. Each version is a better question for the next one.

Experiments

Enter the lab →
  1. L01Dev EventsA hub for hackathons, meetups and conferences, with data models for events and bookings already in place.In progress2026
  2. L02EmployWiseUser management against a REST API: authentication, protected routes, pagination, editing and deleting users.Prototype2025
  3. L03Future FieldsA platform for a sustainable-agriculture ranch, with sections for crops, livestock, events and community. My first large React project, built from scratch.Prototype2024

§05/Correspondence

Have something to build?

Tell me what you need: a business system, a store, a dashboard, an API. I reply to every enquiry by email.

  • Building JADN LABS
  • Available for freelance projects

Or directly

GitHub
@Jadline
Based
Nairobi, Kenya