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Obi FredOF
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Obi Fred

@obifred

Senior Frontend & Mobile Developer delivering secure, high-performance React/React Native apps across fintech and healthcare.

Zimbabwe
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What I'm looking for

I’m looking for a team where I can lead frontend architecture, ship secure React/React Native experiences, and collaborate cross-functionally in Agile—owning performance, quality, and measurable delivery outcomes.

I’m a results-driven Senior Frontend & Mobile Developer with 5+ years of experience shipping production-ready web and mobile applications across fintech, healthcare, edtech, and e-commerce. I specialize in React.js, React Native, Next.js, Vue.js, and TypeScript, with a strong focus on performance, reliability, and security.

At Payecards, I built and shipped a React Native (Expo) fintech app for iOS and Android, integrating secure payment gateway and financial APIs. I implemented biometric authentication (Face ID / fingerprint), improved error handling and retry logic to reduce transaction error rates by ~30%, and cut Android build times by 25% through Gradle and CI/CD optimisations.

As Engineering Lead at Ingryd Academy (EdTech), I led a team of 4 frontend engineers, introducing code-review standards and sprint rituals that reduced deployment defects by 35%. I architected and delivered a Vue.js student management system for 3,000+ learners, and rebuilt analytics dashboards to cut report generation time from 8 seconds to under 2 seconds.

Across roles, I’ve delivered real-time dashboards and production apps used by tens of thousands of users—including D3.js/Chart.js analytics, health-data integrations, and component conversions that accelerate delivery. I also enjoy translating product needs into scalable frontend architecture and maintainable UI systems, whether building from scratch or improving existing codebases.

Experience

Work history, roles, and key accomplishments

Hazon Holdings logoHH

Frontend & Mobile Developer

Hazon Holdings

Mar 2023 - Mar 2025 (2 years)

Delivered Wellness Plus across web and mobile using React Native (Expo) and Flutter for 10,000+ MAUs, building Flutter modules that achieved smoother 60fps animations. Converted 30+ Figma screens into production-ready components, built real-time clinician dashboards with D3.js/Chart.js, and improved average page load time by 45% via lazy loading and code splitting.

Bluechip Technologies logoBT

Frontend & Mobile Developer

Bluechip Technologies

Nov 2022 - Nov 2023 (1 year)

Delivered production applications across fintech, edtech, and internal tooling, including Cash Complete, an enterprise cash-management platform used across 5 Nigerian states. Built a React-based internal bug tracker that reduced manual QA reporting overhead by 60%, and optimized D3.js rendering for 50,000+ rows to cut chart draw time from 3.2s to 0.8s.

Education

Degrees, certifications, and relevant coursework

Olusegun Agagu University of Science and Technology logoOT

Olusegun Agagu University of Science and Technology

Bachelor of Technology, Computer Science

2015 - 2021

Earned a B.Tech in Computer Science at Olusegun Agagu University of Science and Technology from 2015 to 2021.

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