I build production-grade software that people use.

I'm Oluwaseun Olabisi, a software developer. I build web apps, marketplaces, and e-commerce storefronts with Next.js and Supabase. The full stack, design to deploy, shipped in days rather than months. Here's the work.

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NEXT.JS 16· POSTGRESQL· TAILWIND v4· SUPABASE· BREVO TRANSACTIONAL· WHATSAPP CHECKOUT· VERCEL EDGE· TYPESCRIPT· REACT 19· NEXT.JS 16· POSTGRESQL· TAILWIND v4· SUPABASE· BREVO TRANSACTIONAL· WHATSAPP CHECKOUT· VERCEL EDGE· TYPESCRIPT· REACT 19·

· About

Selected work.
How I think.

I'm a software developer who ships complete products, not prototypes. Two of my own builds are live below: a lead-management platform and a student marketplace. The rest is client work for Nigerian DTC brands that were leaving money on the table, usually stuck on stock templates that can't pass Meta's ad review and don't feel premium enough to justify their price point.

Every build is brand-safe at the top, raw where it needs to be, and wired to the operator's actual workflow: Supabase for orders, Brevo for confirmations, WhatsApp for the close. No checkout friction, no abandoned carts, no payment processor required.

Full-stack builds Conversion copy Premium design system Meta-ad compliant Supabase + Brevo orders WhatsApp checkout

· Featured products

Not just pages. Products.

Two self-initiated builds taken from idea to deployed product: a lead-management platform and a campus marketplace. Press play to watch each one work.

Watch the demo

Product 01 · SaaS platform LIVE

Seimbient

Lead-management platform for RWA tokenization. Parses, cleans, and scores every lead on role, intent, and readiness, then sends tailored outreach across Email, Discord, and Telegram, with automated follow-ups that track engagement across channels.

SaaS Lead scoring Multi-channel outreach Next.js

Visit seimbient-ai.vercel.app ↗

Watch the demo

Product 02 · Marketplace LIVE

UniDeclutter

A campus marketplace where students buy, sell, and exchange within their university community: verified student accounts, WhatsApp-integrated bidding, escrow-protected payments, and campus pickup. Launching in top schools across Nigeria.

Marketplace Escrow payments WhatsApp bidding Next.js

Visit cribdeclutter.vercel.app ↗

· Client work

Three sites. One client.
Same playbook.

Golden Key Wellness trusted me with three different product lines: phone, supplement, coffee. Same stack, same conversion system, three completely different brands.

01 · 2026 LIVE

Wellix Smart Flip i17

Foldable phone DTC. ₦60–170K bundles, color carousel pre-selects into the order form, free delivery anywhere in Nigeria.

Next.js Supabase WhatsApp

Visit wellix.club ↗

02 · 2026 LIVE

Varna GiREED Capsules

NAFDAC-registered Ayurvedic supplement. Animated ulcer-anatomy hotspot, ingredient deep-dives, ₦40–110K bundles.

Next.js Veo 3.1 video NAFDAC compliant

Visit welltechg.store ↗

03 · 2026 LATEST

Norland Cordyceps Coffee

Men's wellness ritual. Editorial bilingual hero, Pidgin trust block, real WhatsApp screenshots as social proof. ₦35–100K bundles.

Next.js Bilingual UX Meta-ad ready

Visit vitalcore.club ↗

· Trusted by

Golden Key Wellness · Wellix · Norland · + more soon

Word from the client

I am really impressed with the website design. It's clean, attractive, and very easy to use. The layout is catchy and engaging, and you can tell it was built to convert customers effectively. Great work and highly professional execution.

Double K

Founder · Golden Key Wellness

Verified via WhatsApp · 11:20

· How I work

Five steps. Seven days.

The same workflow that shipped Wellix, Varna and Norland. Tight scope, fixed timeline, a sign-off gate after each step so you're never surprised at the end.

STEP · 01

Critique

Audit your current page or competitor. Find what's broken.

STEP · 02

UX mock

A static HTML mock so you see the design before any code.

STEP · 03

Sign-off

Excalidraw flow map. You approve before I touch a line of code.

STEP · 04

Scaffold

Next.js build, Supabase orders, Brevo email, WhatsApp wired.

STEP · 05

Deploy

Vercel deploy, domain wired, env vars set. You go live.

Latest build · spotlight

From two minutes to two hours. Naturally.

Norland Cordyceps Coffee's old page was a rough Pidgin WordPress build. It converted okay on WhatsApp blasts but was un-runnable on Meta. I rebuilt it as a premium men's-wellness ritual: bilingual hero for paid traffic, a clearly-labeled Pidgin trust block for the existing buyer, and the WhatsApp screenshots they already had, restyled as social proof.

7

Days build

14

Components

4

SKUs live

Visit vitalcore.club Want one like this?