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Joshua RotimiJR
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Joshua Rotimi

@joshuarotimi

Senior iOS Engineer at Quidax, building crypto wallet and trading experiences and improving payment reliability.

Nigeria
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At Quidax, I build customer experiences across cryptocurrency trading, wallets, onboarding, deposits, and withdrawals. I’ve improved money movement journeys and security, and integrated observability tools to help diagnose production issues.

At Sumara Technology / CMC Markets, I contributed to the StoreKit 2 and Stripe subscription stack within CMC Invest. I also built the native Cards experience and backend-driven investment forms for the SpaceX share offering.

At Flutterwave, I built Send App features for international money transfers, authentication, and biometric verification. I improved application stability to a 99.98% crash-free rate through profiling, optimization, and production monitoring.

Across Aptive Environmental, HealthRhythms via Turing, and Qucoon, I developed field service, health engagement, identity management, and consumer and enterprise iOS experiences. I’ve worked with Swift, SwiftUI, UIKit, and Objective-C, taking features through implementation, testing, and release.

Experience

Work history, roles, and key accomplishments

SM

Senior iOS Engineer

Sumara Technology / CMC Markets

Apr 2026 - Sep 2026 (5 months)

Contributed to the native StoreKit 2 and Stripe subscription stack within CMC Invest, supporting purchase flows, subscription lifecycle management, and customer entitlement states. Built the native Cards experience using SwiftUI, including card carousel, accessibility, and backend-driven investment forms.

AE

Senior iOS Engineer

Aptive Environmental

Jan 2023 - Dec 2025 (2 years 11 months)

Built Field Service and Sales iOS applications used by technicians and sales teams across North America. Developed responsive field workflows using UIKit, Auto Layout, Core Data, offline caching, and background synchronisation for low-connectivity environments.

HT

Senior iOS Engineer

HealthRhythms via Turing

Jan 2020 - Dec 2020 (11 months)

Developed patient-facing features for continuous behaviour tracking and engagement. Built responsive interfaces and integrated backend services for health data and user engagement workflows.

QU

iOS Developer

Qucoon

Jan 2014 - Dec 2019 (5 years 11 months)

Built and maintained consumer and enterprise iOS applications using Swift, UIKit, and Objective-C. Developed identity management experiences with QR code scanning, biometric verification, Auto Layout, MVVM, and dependency injection.

Education

Degrees, certifications, and relevant coursework

Federal University of Technology, Akure logoFA

Federal University of Technology, Akure

Bachelor of Technology, Physics Electronics

Bachelor of Technology in Physics Electronics from the Federal University of Technology, Akure.

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