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Ayokunle User

@ayokunleuser

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Senior iOS Engineer at Raenest, overhauling the mobile Card flow and integrating AI-assisted testing.

Nigeria

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At Raenest Inc., I’m overhauling the mobile Card flow and building product UI flows, using AI-assisted development and integrating automated unit and UI testing.

At Carbon MFB, I led development of physical card features and integrated payment gateways including C’gate and Paystack. I also optimized the app architecture, reducing its size from over 200MB to 83MB.

Across work with FCMB, GetCova Technologies LTD., Old Mutual, and other teams, I’ve contributed to iOS apps, reusable UI components, and app architecture. My experience includes Swift, UIKit, SwiftUI, and testing practices such as TDD and BDD.

Experience

Work history, roles, and key accomplishments

Current

iOS Developer

Current

Raenest Inc.

Mar 2026 - Present (7 months)

Joined the iOS development team, overhauled the mobile Card flow, and integrated AI-assisted development and testing workflows.

Swift SwiftUI AI assisted Development Unit Testing UI Testing

Senior iOS Developer

First City Monument Bank Limited (FCMB)

Nov 2024 - Mar 2026 (1 year 4 months)

Designed and built reusable UI components, contributed to code reviews and bug fixing, and led development of Cards features.

iOS UI Components Code Review Bug fixing Card Integrations

Senior iOS Engineer

GetCova Technologies LTD.

Jan 2025 - Jun 2025 (5 months)

Set up app architecture, design system, and networking module; implemented UI slicing and reusable SwiftUI components; introduced CI pipeline and rolled out MVP builds.

SwiftUI Architecture Design Systems Networking CI CD Sideloadly

Senior iOS Developer

Carbon MFB

Apr 2021 - Jan 2025 (3 years 9 months)

Led development of physical card features, integrated payment gateways, optimized app architecture reducing size by 58.5%, and adopted TDD and BDD testing.

iOS Payment Gateways App Architecture Test Driven Development BDD Reusable UI components Technical Documentation

iOS Engineer

Old Mutual

Jan 2024 - Jun 2024 (5 months)

Implemented dependency injection and coordinator pattern, built reusable UI components, and completed modularization for West Africa products.

Dependency Injection Coordinator Pattern Modularization SDK Development GraphQL

iOS Developer

Oigetit

Dec 2023 - Jan 2024 (1 month)

Handled requirement gathering, bug fixes, team collaboration, and provided technical support for live app issues.

Requirements Gathering Bugfixes Teamwork Technical Support

iOS Developer

Softcom Limited

Jan 2022 - Jan 2023 (1 year)

Adopted POP and Coordinator patterns, increasing app responsiveness by over 30%, and built reusable UI components to improve workflow by 25%.

Protocol Oriented Programming (POP)Coordinator Pattern Reusable UI components iOS

Associate Software Engineer

Decagon

Jul 2020 - Jun 2021 (11 months)

Developed iOS applications using Swift, UIKit, Core Data, and unit testing; trained in Agile methodologies and applied Scrum principles.

Swift UIKit Core Data Unit Testing Agile Scrum Kanban

Private Mathematics Tutor

Self Employed

Apr 2020 - Jul 2020 (3 months)

Provided private mathematics tutoring during the Covid-19 period.

iOS Developer

Easy Life

Jan 2019 - Apr 2020 (1 year 3 months)

Developed iOS applications using UIKit, Core Data, AV Foundation, and Realm Database; participated in code reviews and bug fixing.

UIKit Core Data AVFoundation Realm Database Swift Git

Mobile App Developer

FMARD

Dec 2018 - Feb 2020 (1 year 2 months)

Built reusable UI components for iOS and Android, consumed RESTful APIs, and applied SOLID and DRY principles with unit testing.

iOS Android REST APIs SOLID Dry Unit Testing Storyboards XML

Education

Degrees, certifications, and relevant coursework

Lagos State University

Master of Science, Information Technology

2023 -

Pursuing a Master's degree in Information Technology, with coursework in Enterprise Resource Planning, Database Design, System Design, and IT Infrastructure Management.

Adekunle Ajasin University

Bachelor of Science, Mathematics

2014 - 2018

Earned a Bachelor of Science in Mathematics, with coursework including Harvard CS50, Set, Logic and Algebra, and programming in C++, C#, PHP, JavaScript, and FORTRAN.