Proof point → Prove the core, then rewrite it properly - and keep the bones for the next five products.

🩻 Problem

Nigerian transport businesses run fleets on trust and phone calls: no trip records, no GPS trail, no structure for the guarantor relationships the industry actually runs on.

🔨 Solution

Flenager (“fleet manager”) across two deliberate generations:

Architecture Overview

  1. v1 (2020) - the proven core: fleet, trip, GPS ping, and pricing models with auth and stats routes. Express/Mongoose MVC with SendGrid, Sentry, and Joi validation.
  2. v2 (2020–2021) - the re-platform: companies, vehicles, guarantors (the Nigerian transport-business staple, modeled as a first-class entity), plans and payment methods, production/sandbox API keys, roles and invites, verification, logs - plus live GPS-device ingestion (gps-tracking) and Slack ops alerts from the backend.
  3. Team process - PR templates on both repos, two named maintainers, a #flenager-eng Slack channel with env-file onboarding, and a /v2/status health check.

The legacy

v2’s folder anatomy, helpers, and README template became the direct ancestor of FarmPlus, then the TypeScript ports in E-Student and Lemify - one boilerplate lineage spanning four products and five years.

📜 Philosophy

Iterate by rewrite: validate the domain with the smallest core, then rebuild as a real multi-tenant product. Invest in the boilerplate - it pays compound interest.

🎓 Key learnings

  • GPS/telemetry ingestion and trip/ping data modeling.
  • The mechanics of a SaaS developer surface: versioned APIs, API keys, sandbox environments.
  • Encoding local business reality (guarantors) into schema rather than forcing foreign templates.
  • Two-person team discipline: PR templates, shared envs, backend-to-Slack observability.

📈 Output & impact

  • A fleet platform iterated through two majors, whose architecture demonstrably seeded at least three later production APIs.

🌍 Why this matters

The Founder Journey. The guarantor model is the deeper signal: designing for how Nigerian business actually works instead of forcing foreign templates. Builders with scar tissue from the real sectors - transport, farms, food - make better products, better hires, and better advisors for anyone building here.

🚀 Hire me

Building for a Nigerian industry the templates ignore? Let’s talk → · See also: FarmPlus · The thesis