Ajala Abdullah | AI Engineer & Web Developer

Portfolio

Selected Projects

Not demos — every one of these is deployed, in use, and built to solve a specific problem for real people. AI agents, fraud detection, fintech, edtech and marketplaces, each shipped end to end.

AI Agent

RelayFlow

One AI agent across every business messaging channel. RelayFlow connects a business's WhatsApp, Telegram, Slack, and Gmail, then lets the owner ask what's been said, summarize any channel, and send one message everywhere — with a mandatory approve-before-send step so nothing goes out unreviewed.

Built for SMEs drowning in customer messages across four apps — now shipped under Levi AI at userelayflow.com, with an approve-before-send guardrail so nothing goes out unreviewed.

Connect flows for WhatsApp (QR), Telegram (phone/code/2FA), Slack and Gmail (OAuth).
Streaming agent with a live activity feed; ask about recent conversations on any channel.
Draft → approve → send, including one-shot broadcast to all connected channels.
Scheduled tasks that run an instruction on a cron and email you the result.
Eval harness: golden-set answers scored by an LLM judge plus scope-drift and prompt-injection tests — guardrails added from what it found.

Fastify + TypeScript React + Vite OpenAI Responses API Baileys / GramJS MongoDB Vercel

Live App Repository

AI Data Platform

Levi AI

The human expertise layer powering production AI. Levi connects 2k+ contributors and domain specialists worldwide with AI companies that need data labelling, text annotation, preference ranking and expert evaluation — the human compute behind model training.

Built at Levi AI as AI Engineer — the contributor platform and task marketplace that 2k+ contributors use daily, and the infrastructure behind it as the company scales.

Task marketplace that matches open work to each contributor's skills, with pay rates shown before starting.
Onboarding in about five minutes with casual and professional paths; roles switchable from settings.
Specialist tracks — domain Q&A and code evaluation in medicine, law, finance and engineering — applied for in-dashboard.
Earnings tracking with approved work paid within 24 hours; works on every device.

Contributor Platform Task Marketplace Data Labelling Preference Ranking (RLHF) Payout Flows

Live App

AI Fraud Detection

TrustBridge AI

Real-time fraud protection for bank customers — 2nd place at Wema Hackaholics 7.0. Where KYC checks identity once at signup, TrustBridge's "PYC" (Protect Your Customer) engine scores every login and transfer against the customer's own behavioural baseline and intervenes during the attack, not after the money is gone.

Built for bank customers and fraud desks — presented live to Wema Bank judges; designed to sit behind a bank as an SDK.

Behavioural risk engine with a graduated ladder: allow → challenge → step-up → freeze & alert the fraud desk.
Separates "is it you?" from "is this safe?" to catch coercion and "safe account" scams.
Deepfake-resistant liveness: 4 random challenges per run, processed entirely in-browser.
Threat Theater: replay real Nigerian scam patterns against the live engine.

Python NiceGUI (FastAPI) MediaPipe Google Gemini MongoDB Atlas Railway

Live App Demo Video

AI & Fintech

PayWise

AI bookkeeping for Nigerian traders. Allows market merchants to record credit sales using voice notes on WhatsApp, automatically extract terms via LLMs, and auto-generate virtual accounts for debtors to make payments easily.

Built with market traders in the loop — voice-note flow validated with real merchants in four languages before the Nomba pitch.

Pidgin, Yoruba, Igbo, Hausa voice-note processing.
AI extracts customer details, items, amounts, and dates.
Nomba API virtual account integration for instant debtor payments.
Consolidated dashboard for tracking wallet activity, payouts, and debts.

FastAPI LangGraph + GPT Twilio WhatsApp Nomba Banking API MongoDB Railway

Live App Repository

EdTech & AI

Study Master

An AI-powered study companion helping Nigerian students prepare for WAEC, NECO, and JAMB. StudyMaster transforms how students prepare with personalized study plans, smart practice, and expert guidance.

Deployed to 50+ active students preparing for WAEC, NECO and JAMB — features iterated weekly from student feedback.

RAG study companion: syllabi chunked and embedded (text-embedding-3), retrieved from MongoDB Atlas Vector Search so every answer is grounded in the source.
Automated CBT (Computer Based Testing) mock exams with detailed explanations.
Dynamic flashcards and AI study planners personalized to student strengths.
Student performance trackers mapping progress against actual exam syllabi.

Next.js React FastAPI OpenAI API Atlas Vector Search Vercel

Live App Repository

School Management

My School Manager

An all-in-one smart school management platform that streamlines operations, empowers teachers, and engages students through intuitive dashboards and powerful tools. Trusted by 5+ schools.

Deployed across 5+ schools — onboarded administrators and teachers on site, trained staff, iterated CBT and reporting from their feedback.

AI study assistant that answers questions and creates custom exam papers.
Secure CBT portal for students with automated, instant grading.
Smart Notes engine for teachers and students to collaborate.
Print-ready academic reports, exams, and unified admin dashboard analytics.

Node.js Express React MongoDB AI Exam Engine AWS

Live App

Marketplace

KizFarm

A farm-to-home marketplace connecting verified farmers directly with households and restaurants. KizFarm handles the whole chain — listing, ordering, cold-chain delivery tracking, and instant farmer payouts — so buyers get fresh produce and farmers get fair prices.

Built at Tinzwave for a farm-to-home client — farmer onboarding, live order tracking and instant payouts, shipped end to end.

Verified farmer network with listings across produce, grains, dairy, herbs, and organics.
Real-time order tracking with quality checks and a 24-hour delivery promise.
Instant farmer payment triggered on delivery confirmation.
Learning hub with courses from professional farmers for aspiring growers.

Next.js TypeScript Tailwind CSS Radix UI Express MongoDB

Live App Frontend Backend API

Gaming & E-Commerce

Naira Games

Nigeria's gaming ecosystem — a comprehensive community platform for Nigerian gamers combining a marketplace, gaming news, events, game cafes directory, and community forums.

Built at Tinzwave — a community platform now serving thousands of Nigerian gamers.

Hardware marketplace to buy, sell, and swap gaming PCs, consoles, and gear.
Interactive forums divided by platform (PC, Console, Mobile, VR).
Tournament integration for local competitions (FIGN, Carry1st Africa Cup).
Progressive Web App (PWA) configuration for offline, desktop/mobile app launch.

JavaScript Node.js MongoDB PWA Support Tailwind CSS Nginx

Live App

Recognition

Press & Hackathons

Independent proof that the work holds up: national press coverage of the Nomba win, and podium finishes at three major hackathons.

17-Year-Old Nigerian Developer Wins Nomba x DevCareer Hackathon with AI WhatsApp Assistant

July 29, 2026 Read article

Nidacity

17-year-old developer wins $4,000 hackathon with localised voice-AI debt tracker

July 29, 2026 Read article

Hackathon Milestones

1st Prize Winner

June 2026

Nomba x DevCareer Hackathon

Nomba FinTech

Successfully designed, coded, and presented PayWise, a WhatsApp-based AI merchant ledger integrated with the Nomba virtual banking API. Won first place out of hundreds of competitive teams.

$4,000 USD Award

2nd Place

August 2026

Wema Hackaholics 7.0

Wema Bank

Built and pitched TrustBridge AI, a real-time behavioural fraud engine that intervenes during an attack — freezing a coerced transfer while the scammer is still on the line. Placed second out of hundreds of developers.

2nd Place Finish

Top 5 Finalist

2025

Heirs Insurance Hackathon

Heirs Insurance Group

Competed and advanced to the top 5 finalists, building an innovative insurance technology solution under intense hackathon conditions alongside top Nigerian developers.

Top 5 Finalist Distinction

Career Journey

Experience

2026 - Present

AI Engineer

Levi AI — the human expertise layer for production AI

Helping build and scale the platform that connects 2k+ African contributors with AI companies for data labelling, annotation and preference ranking. Build the contributor platform and task marketplace — onboarding, role selection, skill-matched task feeds, pay-rate display and dashboards — and the infrastructure behind it as the contributor base grows.

2024 - Present

AI Engineer & Web Developer

Tinzwave Technologies

Build and ship AI-powered web products for client businesses — from understanding what the customer needs to the deployed system. Delivered KizFarm (farm-to-home marketplace) and NairaGame (gaming community serving thousands) end to end, integrating LLM features and owning post-launch iteration.

2023 - Present

Freelance AI & Web Engineer

Independent

Designed, built and operate RelayFlow, TrustBridge AI, PayWise, Study Master and My School Manager end to end — AI agents, RAG, voice pipelines and full-stack platforms — including onboarding 5+ schools and iterating from real user feedback. Own hosting, payments, email and monitoring for every deployment.

Learning

Education

2022 - 2024

Diploma in Software Engineering

New Horizon Computer College

Studied core software engineering principles, algorithms, data structures, object-oriented programming, and web development. Built a strong foundation in full-stack development and system design.

2023 - Present

Self-Directed Learning & Research

AI, ML & Web Architecture

Specialized in AI agent tooling (LangGraph, LangChain), FastAPI backend structures, MongoDB database design, and React state management. Contributed to open-source and developer communities.

I build AI software people actually use.