(01) — Front-End & Mobile

Interfaces built with restraint, engineered for scale, and shipped to production.

Based in: Abuja, Nigeria
Practising since: 2020

ABDULLAHI OJONUGWA

Scroll to begin

6+ years · 6+ production apps · 10,000+ users

TypeScriptFlutterNext.jsReactDockerNode.jsGraphQLClaude CodeCI/CDMongoDBAWSn8nTypeScriptFlutterNext.jsReactDockerNode.jsGraphQLClaude CodeCI/CDMongoDBAWSn8n

(02) — Approach

Built as quietinfrastructure forproducts peopleactually use

The short version

Front-end focused software engineer with 6+ years of experience — 3+ of them specialising in mobile — building user-facing applications for startups in fintech, payments, escrow, education and religious tech. I architect state, integrate REST and GraphQL APIs, and ship products people actually use.

Shipped interfaces from production applications on the Play Store and App Store.

(03) — By the numbers

Verified across shipped production work

10,000+
Active users: 6+
Years engineering: 6+
Production apps: 5
Countries served

(04) — Selected work

Live on Google Play & the App Store

Religious Tech

Mobile Engineering · 2024

10,000+Active users
Android · iOSPlatforms

Spirit Nerds

A gospel community platform with a live song and sermon streaming interface, built for believers to listen together in real time.

Flutter
Dart
GetX
REST

10,000+Active users
Android · iOSPlatforms

View on Google Play

Spirit Nerds — store listing

Fintech · Payments

Chief Technology Officer · 2025

5Countries
1,000+Monthly transactions

Borderwave

An invoice-based payment platform with a global payments dashboard, enabling users to receive money across borders. I led the full stack — two mobile platforms, one backend architecture, four core services.

Flutter
Node.js
Payment Gateways
VPS

5Countries
1,000+Monthly transactions

View on Google Play

Borderwave — store listing

Fintech · Escrow

Mobile Engineering · 2024

100+Downloads
Android · iOSPlatforms

Getscrow

An escrow management application with a secure transaction interface that safeguards user funds through the full lifecycle of an online deal.

Flutter
RxStreams
MVVM
REST

100+Downloads
Android · iOSPlatforms

View on Google Play

Getscrow — store listing

(05) — Build index

13 repositories — personal & organisation

Mobile

Flutter · Android & iOS

01
Readrly
Readrly · 2025
Sole mobile engineer
A children's literacy platform built around interactive reading games — rearranging words, ordering sequences, listen-and-select, one-to-many matching — graded by reading level and closed out with certificates.
- Flutter
- GetX
- Retrofit
- Firebase
Private repository
02
One Universe
One Universe · 2026
Mobile engineering
A services marketplace pairing buyers with vetted providers: separate multi-step onboarding for each side, an in-app wallet, biometric unlock and location-aware discovery.
- Flutter
- Riverpod
- Hive
- Firebase
Private repository
03
Emerging Leaders
Personal · 2026
Mobile engineering
A leadership development app organised around a digital workbook, project tracking and personal budgeting, with onboarding tailored per cohort.
- Flutter
- Firebase
- MVVM
Private repository
04
Albus
Albus Inc · 2026
Feature engineering
The social shell around a casual gaming platform — feed, live rooms, game launcher and in-app shop — sitting in front of a 40-title game library.
- Flutter
- MVVM
- Firebase
Private repository
05
WiFi Transfer
Personal · 2026
Author
Turns a phone into a file server for the local network: the device serves its own file system over Wi-Fi through a deliberately plain web page, so any browser on the same network can upload and download.
- Flutter
- Dart
- HTTP Server
Source— WiFi Transfer
06
XOR
Personal · 2024
Author
One client for several AI engines, so a conversation can switch models without leaving the thread — a Flutter app over a Node service.
- Flutter
- Node.js
- Express
Source— XOR

Backend

Services · APIs · Payments

01
One Universe API
One Universe · 2025
Backend engineering
The marketplace backend — NestJS and Prisma over PostgreSQL — carrying role-based access, wallets and settlement against a payment provider, real-time chat, disputes and a four-channel notification fan-out.
- NestJS
- Prisma
- PostgreSQL
- Socket.IO
Private repository
02
Banking API
Personal · 2026
Author
A full retail banking service: transfers, airtime and data, cable and electricity bills, KYC, wallets and live exchange rates, with tag-based recipients, QR handoff and Swagger docs.
- TypeScript
- Express
- MongoDB
- Swagger
Source— Banking API
03
Sitehound Bridge
Executive Outliners · 2023
Author
A connector holding a Shopify storefront in sync with Sitehound inventory — it polls both sides on a timer, matches items by title, pushes quantity and price updates, creates the listings that don't exist yet and flags depleted stock, archiving each pass as CSV on S3.
- Node.js
- Express
- Shopify API
- AWS S3
Source— Sitehound BridgeWrite-up— Sitehound Bridge

Web

Next.js · React · Dashboards

01
One Universe Admin
One Universe · 2026
Front-end engineering
The operator console for the marketplace: user and payment oversight, dispute handling, service moderation, and platform-wide fee and promotion configuration, with PDF and spreadsheet export.
- Next.js
- TanStack Query
- Zustand
- NextAuth
Live site— One Universe Admin
02
Bract Services
Personal · 2026
Author
A multi-network publishing tool that pushes one composed post out to Facebook, Instagram and TikTok, with plan-based entitlements, billing and webhook-driven delivery.
- Next.js
- TypeScript
- Meta API
- TikTok API
Live site— Bract Services
03
Exam Portal
Prince Abubakar Audu University · 2025
Author
A results portal where staff assemble, verify and upload semester results — carry-over papers included — against student bio-data.
- React
- TypeScript
- Vite
Live site— Exam Portal

Systems

Native · Desktop

01
webm2mp4
Personal · 2026
Author
A Linux desktop converter wrapping local ffmpeg in GTK3, styled on purpose like a 2005 utility — grey chrome, hard bevels, navy progress bar — and making no network requests at all.
- C++17
- GTK3
- ffmpeg
Source— webm2mp4

(06) — Experience

2020 — Present

01
Chief Technology Officer
Borderwave
Oct 2024 — Feb 2026
- Led the full technology stack across 2 mobile platforms, 1 backend architecture, 4 core services and 2 production environments.
- Built the user-facing invoice and payment interfaces for the Google Play Store and App Store apps, accumulating 100+ downloads.
- Designed front-end and backend flows for invoice payments across 5 countries, integrating 3 payment gateways and 4 third-party APIs.
- Configured 2 VPS servers supporting 1,000+ monthly transactions with zero downtime in production.
02
Senior Flutter Developer
Quru Lab
Jan 2024 — Dec 2025
- Built 5 applications collaborating with 3 designers and 2 backend developers to deliver pixel-perfect, interactive UI screens.
- Integrated 8 RESTful APIs serving 2,000+ active users, driving real-time data exchange between UI and backend services.
- Optimised UI performance and responsiveness across 5+ screens per app through state management with GetX and RxStreams.
- Validated UI behaviour and application stability through unit, widget and integration testing.
03
Full Stack Developer
Starrpower Technologies
Jan 2024 — Aug 2024
- Designed and built responsive front-end interfaces using the MERN stack, partnering with designers and backend developers.
- Enhanced front-end interfaces and connected back-end services to improve performance and experience for 150 users.
- Worked with MongoDB-backed data models to support scalable, data-driven front-end features.
04
Backend Developer
Executive Outliners
Jul 2023 — Sep 2023
- Built an automated sync between Shopify and Sitehound, monitoring inventory changes.
- Configured Amazon S3 and EC2 to manage file storage and host backend services consumed by client applications.
05
Freelance Front-End Developer
Self-Employed · Upwork & Direct
2020 — 2023
- Delivered front-end web applications for a range of clients using React, Next.js and Node.js.
- Built and maintained UI components, page layouts and client-side logic across multiple independent projects.
- Integrated front-end applications with Node.js APIs and third-party services for dynamic, data-driven features.

B.Sc Computer Science

Prince Abubakar Audu University

2022 — 2025

(07) — Capabilities

Front-end · Mobile · Platform · DevOps · AI

Front-End

TypeScript
React
Next.js
HTML & CSS
Responsive Design
Component Architecture

Mobile

Flutter
Dart
Jetpack Compose
Swift
Android & iOS
App Deployment

State & Data

GetX
RxStreams
MVVM
REST
GraphQL
Reactive Programming

Platform

Node.js
MongoDB
AWS S3 & EC2
Payment Gateways
Push Notifications
Git

DevOps

Docker
CI/CD Pipelines
GitHub Actions
Nginx
VPS Provisioning
Systems Automation

AI Workflow

Claude Code
Codex
Kimi AI
Agentic Workflows
n8n
Zapier

(08) — Contact

Abuja, Nigeria · Open to remote

Let's buildsomething worthshipping

Write to me directly

GitHub
github.com/sed-iq
LinkedIn
linkedin.com/in/sadiq-abdullahi-23876623b
Phone
+234 916 209 7577

Interfaces built with restraint, engineered for scale, and shipped to production.

Built as quietinfrastructure forproducts peopleactually use

Spirit Nerds

Borderwave

Getscrow

Mobile

Readrly

One Universe

Emerging Leaders

Albus

WiFi Transfer

XOR

Backend

One Universe API

Banking API

Sitehound Bridge

Web

One Universe Admin

Bract Services

Exam Portal

Systems

webm2mp4

Chief Technology Officer

Senior Flutter Developer

Full Stack Developer

Backend Developer

Freelance Front-End Developer

B.Sc Computer Science

Front-End

Mobile

State & Data

Platform

DevOps

AI Workflow

Let's buildsomething worthshipping