Open to full-time & contract roles

I build mobile apps people trust with money.

Mobile Engineer with 4+ years shipping secure, high-performance iOS and Android apps across fintech, crypto, healthtech and commerce. I founded Raba, a crypto payment app, and took it from concept to acquisition.

Shipping on iOS · Swift & SwiftUIAndroid · Kotlin & ComposeFlutter · one codebaseClean Architecture · MVVM
See my work Get in touch
4+years shipping mobile apps
1M+downloads on apps I helped build
4.8★average store rating
99.8%API uptime at Raba
1×startup founded & acquired
SwiftSwiftUIKotlinJetpack ComposeFlutterReact NativeWebSocketsGraphQLFirebaseFastlaneGitHub ActionsClean Architecture
Live products

Apps in production right now.

Three products I ship and maintain today, plus the startup I built and sold.

S+
Live

Shoppit+

Delivery & local commerce

A local marketplace connecting customers with verified vendors for groceries, electronics and beauty, with in-app wallet payments, order tracking and a vendor dashboard.

I built out the Android app, from location-selection flows to API integrations and vendor screens, alongside a companion SwiftUI iOS build.

KotlinSwiftUIAndroidiOS
shopittplus.app
Ev
Live

Ethikavest

Ethical investing & wealth

A Shariah-aligned investing platform for Africa, giving users access to screened investments, guided onboarding and regulated brokerage services.

FintechOnboardingBrokerage
ethikavest.com
P
Live

PASS App

Prostate Active Surveillance System · client

A Flutter app that guides men through prostate-health decisions across four pathways: Prevent, Investigate, Active Surveillance and Beyond AS.

I shipped the Active Surveillance pathway as the first release and scoped the others as entry points in the same app.

FlutterHealthtechDart
i-pass.org
R

Raba · Founder & Mobile Engineer

A cross-platform crypto-to-fiat payment app I architected in Swift and Kotlin, with WebSocket-based real-time payments, 99.8% API uptime and zero-downtime CI/CD to both stores.

Acquired
Experience

Where I've shipped.

Fintech, crypto trading, payments and fitness. Most recent first.

Mobile Engineer · Cafx

Oct 2024 – Mar 2025 · Remote
  • Architected an AI-powered crypto trading platform handling real-time market analysis and high-frequency trading data.
  • Resolved UI rendering bottlenecks and refined Material Design components.
  • Designed an automated unit, integration and UI test suite covering core trading workflows.
+80% user engagement
cafx.io ↗

iOS Engineer · SheVentures, FCMB Group

Sep 2024 – Jan 2025 · Contract
  • Delivered iOS features in Swift with custom UI components for FCMB's enterprise fintech platform across all iOS device targets.
  • Integrated REST APIs for secure onboarding, account management and financial products.
  • Enforced banking compliance with Keychain secure storage, data encryption and strong authentication.
Enterprise bankingKeychain · encryption
fcmb.com/sheventures ↗

Mobile Engineer · Swap2Naira

Aug 2024 – Oct 2024 · Remote
  • Built and maintained a gift card exchange platform with secure payment gateway integration and real-time transactions.
  • Added advanced authentication, encryption and fraud detection.
+50% user growth in 6 months−40% security incidents4.8★ rating
swap2naira.com ↗

Android Engineer · Daily Workout Coach

Jun 2024 – Jul 2024 · Remote
  • Built Android fitness and fasting trackers in Kotlin and Java with pedometer, calorie tracking and workout planning.
  • Profiled and optimised background tasks and memory management.
1M+ downloads−30% app load time

Founder & Mobile Engineer · Raba (Acquired)

2023 – 2024 · Remote
  • Architected Raba on iOS (Swift) and Android (Kotlin) with full feature parity for a crypto payment product.
  • Built crypto price-conversion processing and WebSocket-based real-time payment flows.
  • Fixed memory leaks and bottlenecks with Xcode Instruments and Android Profiler, improving battery use and responsiveness.
  • Set up CI/CD with GitHub Actions and Fastlane for zero-downtime releases, and mentored junior engineers.
99.8% API uptimeAcquiredZero-downtime releases

Mobile Engineer · Vernsa

Jan 2023 – Feb 2024 · Remote
  • Led end-to-end development of a digital asset transactions and payments app with full API integration.
  • Implemented multi-factor authentication and encrypted secure storage for digital assets.
−40% transaction processing time4.8+★ rating
vernsa.com ↗
Toolkit

What I work with.

Native on both platforms, cross-platform when it fits, with security and testing treated as part of the job.

Platforms 01

SwiftSwiftUIUIKitKotlinJavaJetpack ComposeFlutterReact Native

Architecture 02

MVVMMVIClean ArchitectureSOLIDDependency InjectionModular Design

Backend & APIs 03

RESTWebSocketGraphQLAPNsFCMReal-time Sync

Security 04

SSL/TLSOAuthJWTKeychainKeyStoreCertificate PinningBiometric Auth

CI/CD & Tools 05

Xcode & InstrumentsAndroid Studio & ProfilerGitHub ActionsFastlaneJenkins

Testing 06

XCTestXCUITestJUnitEspressoTDDUI & Integration

Cloud & Workflow 07

FirebaseAWS MobileWCAG AccessibilityGit/GitHubJiraAgile/Scrum
Leadership & community

Building the people, too.

I lead programs that get Nigerian computing students building real products.

Current · National

Vice President, International Affairs — NACOS National

  • Lead international affairs strategy for the National Association of Computing Students and represent NACOS with global partners.
  • Coordinate national programs including BuildX Nigeria and the NACOS Global Opportunities Summit with chapter leads nationwide.
  • Hosted BuildX NACOS'26, a hackathon where students from universities across Nigeria built production-grade projects.
  • Drive sponsorship and partnership outreach for national initiatives, including the NACOS National Convention.
Current · University of Uyo

Mobile Developer Lead, GDG on Campus

I mentor students in Android and Flutter, run workshops and project-based learning, and bring Google developer tools and practices to campus.

Jan – Mar 2025 · University of Uyo

Head of Campus, Creator on Campus

Ran blockchain education on Layer 2 solutions that grew the developer community by 60%, and co-authored research on Layer 2 scalability.

1st

Umi Hackathon

Mobile solution integrating Umi Network protocols for decentralised apps.

3rd

Umi Hackathon · Etibe

A Web3/DeFi mobile app, placing third in the same hackathon.

etibeapp.xyz ↗
Built

CreatorMail (now Kelarr)

Android app for secure digital asset transfers via email, usernames and wallet addresses.

creatormail.vercel.app ↗
Bounties

Creator Chain & Umi

Multiple Web3 bounties for mobile integrations and smart contract interactions.

Contact

Let's ship your next app.

I'm available for full-time roles and contract work on iOS, Android or Flutter. If you're building in fintech, crypto or commerce, I'd like to hear about it.

Phone+234 913 583 0792+234 805 218 7724
GitHubgithub.com/Gideonjon ↗ X@gideonjones_ ↗ Websitegideonjones.xyz ↗