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Jeremy Essien

@jeremyessien

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Senior Mobile Engineer building scalable fintech and telecom apps with Flutter and Kotlin.

Nigeria

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What I'm looking for

I’m looking to lead end-to-end mobile engineering for scalable, revenue-driving products—especially fintech onboarding, payments, and SDK platforms—where performance, reliability, and measurable business outcomes matter. I thrive collaborating with product and backend teams on large rollouts.

I’m a Senior Mobile Engineer with 6+ years of experience building and scaling high-impact mobile products across fintech, telecom, and digital platforms. I focus on performance, scalability, and business outcomes, and I’m known for pairing deep technical execution with strong product thinking.

In recent roles, I’ve led enterprise mobile SDK development integrated with core banking systems, including a multi-country payments SDK enabling bill payments across 19+ countries, and a digital onboarding SDK designed for secure account creation with an average completion time of under 2 minutes. I’ve also implemented AI-driven passive liveness and KYC verification flows to reduce intrusive actions while maintaining compliance and fraud prevention, and I’ve architected high-reliability onboarding systems for large-scale, regulatory-grade rollouts.

Experience

Work history, roles, and key accomplishments

Current

Senior Flutter Engineer

Current

Heirs Technologies

Feb 2026 - Present (5 months)

Lead development of enterprise Flutter mobile SDK platforms integrated with core banking systems for digital financial services across multiple African markets. Built multi-country payments and digital onboarding SDKs, and implemented AI-driven passive liveness and KYC verification flows to support compliant, low-friction account creation.

Flutter Dart Payment Integration Onboarding Verification Compliance Fraud Prevention

Lead Mobile Engineer

Storipod

Oct 2024 - Nov 2025 (1 year 1 month)

Led the mobile engineering team and owned architecture, delivery, and performance for a platform scaling from 5K to 65K active users. Built core product and monetization features, migrated payments to a blockchain-based system, delivered real-time communication, and integrated AI-powered content moderation.

Mobile Architecture Performance Optimization Monetization Real Time Communications AI Content Moderation Mentorship

Senior Mobile Engineer

Payble

Sep 2024 - Mar 2025 (6 months)

Designed and implemented a POS-integrated mobile payment system with encryption layers and a secure business ledger for transaction tracking and compliance. Built device trust verification (99.8% accuracy), and developed real-time inventory management and secure transaction flows.

POS Integration Mobile Payments Encryption Secure Ledger Device Trust Real Time Systems Inventory Management

Lead Mobile Engineer

Sweetride

Oct 2023 - Dec 2024 (1 year 2 months)

Rewrote the app architecture to improve latency using Clean Architecture and system design principles for scalability. Migrated from FCM to custom WebSocket infrastructure, implemented predictive routing and secure AES-256 encrypted messaging, and optimized mapping using Google Maps SDK.

Clean Architecture Performance Optimization WebSockets Predictive Routing AES 256 Encryption Dart Isolate Optimization Secure Messaging Team Leadership

Senior Mobile Engineer

FirstBank

Jan 2024 - Aug 2024 (7 months)

Developed and maintained secure mobile banking features on the Lit App, supporting high-volume financial transactions. Contributed to fraud detection and prevention systems and performed code reviews to ensure clean, scalable code.

Mobile Banking Fraud Detection Fraud Prevention Code Review

Mobile Engineer

Hometown Fintech

Jun 2022 - May 2023 (11 months)

Contributed to a scalable mobile fintech platform handling secure transactions and loan processing for 150K+ users. Managed the React.js-based web app and company site for feature parity with the mobile experience, and handled legacy code migration.

React Fintech Loan Processing Code Migration

Mobile Engineer

Jara Analytics

Jun 2021 - May 2022 (11 months)

Developed and maintained mobile application features focused on performance and usability. Integrated APIs to improve application responsiveness and stability while collaborating with product and engineering teams to deliver enhancements.

Performance Optimization Usability API Integration Mobile Application Developer Responsiveness and Stability Improvements

Senior Mobile Engineer

T2 Mobile

Architected and led development of the T2 Mobile application, defining system design and long-term scalability. Owned end-to-end mobile delivery, including feature development, integrations, testing, production releases, and CI/CD automation.

Mobile Architecture CI CD Testing Automation