Available for freelance & full-time

Mobile app development · NestJS

Building seamless mobile experiences people actually use.

I design and ship high-performance mobile apps — clean architecture, pixel-perfect UI, and production releases on the App Store and Google Play — with NestJS APIs when the product needs a real backend.

View my work Get in touch
6+ Shipped apps
2 Stores live
NestJS API layer
Tejiri Stephen Emoghene-Ijatomi

About

A mobile engineer who owns the full release path.

I’m Tejiri, a mobile app developer with NestJS experience, focused on shipping real products — not demos. From recipe discovery and entertainment to social, commerce, and cooperative finance, I take apps from architecture through UI, APIs, integrations, and store launch.

I care about motion that feels native, state that stays predictable, and security that holds up when money and identity are on the line.

  • Cross-platform, native feel

    One mobile codebase, polished iOS and Android releases.

  • Architecture that scales

    Typed screens, NestJS services, and stores that stay maintainable.

  • Live on both stores

    Apps published on the App Store and Google Play, ready for users.

Capabilities

The stack I ship with

Mobile app development

React Native, Expo, Expo Router, TypeScript — plus Flutter & Dart when the product calls for it.

  • React Native
  • Expo
  • TypeScript
  • Flutter
  • NestJS

State & data

TanStack Query, Zustand, MobX, Axios, Context API, and the React primitives that keep screens honest.

Backend & APIs

NestJS, Node.js, Firebase Auth, Firestore, Cloud Functions, Cloud Messaging, and Laravel APIs.

Security

AES-256-CBC, bcrypt / SHA-256, Expo SecureStore, and device-bound session IDs.

Payments

Paystack dedicated virtual accounts, transfers, webhooks, and money-safe flows.

Selected work

Featured work

Production mobile apps and web products across consumer, social, commerce, and finance.

Bites By Testeii Tech home screen
Consumer · Recipe discovery

Bites By Testeii Tech

Cross-platform recipe discovery for Android and iOS. Search recipes, filter by dietary preferences, and inspect nutrition — powered by a third-party food API.

React Native Expo Food API
App Store Play Store
SINNTS profile screen
Social · Creator platform

SINNTS

A social platform blending content, contests, surveys, and a curated virtual store. Built the creator dashboard for timeline posts, publications, contests, and polls — tools for audience engagement and personal branding.

React Native Social graph Creator tools
App Store Play Store
Chadvent co-operative app screen
Fintech · Co-operative

Chadvent Multi-purpose Co-operative

Android and iOS app for co-operative members: registration, loan applications, savings tracking, loan calculators, and live society updates — sharing a Firebase backend with the web admin dashboard.

React Native Firebase Member ops
Vendesquare customer store screen
Commerce · Delivery

Vendesquare | Customer App

Order from nearby online and physical stores with fast checkout, local listings, tracking, and reliable delivery.

React Native Commerce Delivery
App Store Play Store
Watch By Testeii Tech movie screen
Consumer · Entertainment

Watch By Testeii Tech

Movie discovery for Android and iOS, powered by TMDB. Browse trending titles, explore genres, inspect cast, watch trailers, get AI recommendations, and keep a watchlist.

React Native TMDB Gemini AI Firebase
App Store Play Store
Testeii Tech Games trivia screen
Consumer · Games

Testeii Tech Games

A no-login trivia game for Android and iOS. Players customize quizzes by category, difficulty, and length, with live questions from an API.

React Native Trivia API Expo
App Store Play Store

chadventmpcs.org

Chadvent MPCS website and member platform
Fintech · Web dashboard

Chadvent MPCS

Built a full-featured admin dashboard for Chadvent Multi-Purpose Cooperative Society (MPCS), a member-owned financial cooperative. Administrators manage member onboarding and KYC, wallet balances, loan approvals, transactions, member reports, notices, and a cooperative marketplace. It connects to the same Firebase backend as the mobile member app, with role-based access, real-time alerts, and secure session handling.

Admin dashboard Firebase KYC Role-based access
Visit site

tradersaccountabilitybootcamp.org

Trader's Accountability Bootcamp landing page
Web · Coaching platform

Trader's Accountability Bootcamp

Built the conversion-focused website for Trader's Accountability Bootcamp — a 6-week forex psychology program from Mindstyle Forex. Story-driven landing page with waitlist capture, testimonials, FAQ, and a clear path from first visit to early access.

Landing page Waitlist Conversion
Visit site

Education

Degrees that back the work

Sept 2022 – Nov 2023 Distinction

MSc Computer Science (Software Engineering)

University of Staffordshire, UK

Sept 2013 – Oct 2017

BSc Computer Science

University of Bath, UK

Contact

Let’s build the next product

Have a product in mind, or need a mobile engineer with NestJS experience on the team? Email is the fastest way to reach me.

Email

I read every message and usually reply within a day or two.