Okwudili Ezeoke, Developer in Manchester, United Kingdom
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Okwudili Ezeoke

Verified Expert  in Engineering

Full-stack Developer

Manchester, United Kingdom

Toptal member since January 4, 2022

Bio

Okwudili is a versatile software engineer with a passion for crafting scalable systems and innovative mobile applications. With deep expertise in back-end development, DevOps, and cross-platform technologies, he has delivered impactful solutions in fintech and edtech. Okwudili 's proactive approach and commitment to quality ensure clients receive future-ready, reliable software that drives success.

Portfolio

Univacity
Amazon Web Services (AWS), DevOps, SQL, Angular, Full-stack, Next.js...
RahPay
React Native, Ionic, NestJS, iOS, Android, Flutterwave, SQL, Angular...
Univacity
React, GraphQL, SQL, Angular, Full-stack, Tailwind CSS, Full-stack Development...

Experience

  • Python - 8 years
  • Express.js - 6 years
  • React - 6 years
  • NestJS - 4 years
  • TypeScript - 4 years
  • React Native - 4 years
  • Amazon Web Services (AWS) - 4 years
  • DevOps - 4 years

Availability

Part-time

Preferred Environment

TypeScript, React, Node.js, GitHub Actions, Docker, Amazon Elastic Container Service (ECS)

The most amazing...

...project was developing RahPay's mobile app, which enabled West African users to effortlessly manage their bills through secure payments and geolocation.

Work Experience

Lead Software Developer

2021 - PRESENT
Univacity
  • Spearheaded the development of scalable software solutions. Successfully reduced load times by 40% and increased system uptime by 99.8%.
  • Led a cross-functional team of 10, including six developers, implementing Agile practices to improve project completion rates by 30%.
  • Integrated cloud-based solutions, reducing operational costs by 20%. Conducted code reviews and implemented best practices, ensuring software maintainability and compliance with industry standards.
Technologies: Amazon Web Services (AWS), DevOps, SQL, Angular, Full-stack, Next.js, Full-stack Development, Technical Leadership, Back-end, REST APIs, Architecture, Payment APIs, Startups, Front-end, Front-end Architecture, Progressive Web Applications (PWAs), Data Integration, Web Development, UI Development, Software Architecture, Mobile Development, Hosting, Stripe, Back-end Development, Scalable Application, API Integration

Lead Software Developer

2023 - 2024
RahPay
  • Developed the RahPay mobile app using Ionic and Angular, creating a cross-platform solution for managing subscriptions (airtime, WiFi, electricity, mobile data, and TV) with a seamless user experience.
  • Built a scalable back-end system with NestJS and PostgreSQL, integrating Flutterwave’s payment gateway for secure transactions and enabling wallet top-ups via cards or deposits.
  • Utilized Redis for caching frequently accessed data, such as subscription plans and user balances, to reduce API response times and improve app performance.
  • Implemented JWT-based authentication and role-based access control to secure user accounts and ensure compliance with industry security standards.
  • Streamlined development with Agile methodologies and tools like Jira, while conducting code reviews and implementing automated testing using Jest and Cypress to ensure high code quality.
  • Designed and developed the initial version of RahPay using React Native, handling the full app lifecycle.
Technologies: React Native, Ionic, NestJS, iOS, Android, Flutterwave, SQL, Angular, Full-stack, Full-stack Development, Back-end, REST APIs, Payment APIs, Front-end, Front-end Architecture, Data Integration, Web Development, UI Development, Software Architecture, Mobile Development, Hosting, Single Sign-on (SSO), Back-end Development, API Integration

Software Developer

2019 - 2021
Univacity
  • Developed end-to-end web applications using JavaScript, React, and Node.js, serving over 3,000 active users.
  • Collaborated with stakeholders to gather and refine project requirements, delivering 95% of projects on time.
  • Built and maintained RESTful APIs to ensure seamless communication between front-end and back-end systems.
Technologies: React, GraphQL, SQL, Angular, Full-stack, Tailwind CSS, Full-stack Development, Back-end, REST APIs, Payment APIs, Startups, Front-end, Progressive Web Applications (PWAs), Data Integration, Web Development, UI Development, Front-end Development, Back-end Development, Scalable Application, API Integration

Software Developer

2019 - 2019
APTECH
  • Assisted senior developers in troubleshooting and debugging basic software issues, enhancing team efficiency.
  • Gained foundational knowledge in programming languages, including JavaScript and Python, through hands-on projects.
  • Participated in the development of small-scale web applications under guidance, contributing to the team’s deliverables.
  • Shadowed experienced developers to understand Agile methodologies and version control systems like Git.
  • Attended training sessions to strengthen skills in software development and cloud technologies.
Technologies: JavaScript, Python, Back-end, REST APIs, Web Development, UI Development, Back-end Development, API Integration

Experience

Personal Finance Tracker

https://github.com/cetech1001/personal-finance-tracker
I built a comprehensive personal finance tracker that helps users efficiently manage their budgets, track expenses, and visualize spending patterns through interactive dashboards. I designed the architecture, implemented user authentication, integrated chart libraries for data visualization, and ensured secure API communication between the front and back end. I also deployed the app using containerization technologies and maintained it with continuous integration practices, providing a robust and scalable solution.

Next-gen Financial API Platform

A state-of-the-art financial API solution designed to specifically address the challenge of manual financial reconciliation and fragmented data access. The platform can automate the process of aggregating transaction data from multiple sources, such as bank accounts, payment gateways, and financial institutions, into one centralized hub. By doing so, it can automatically reconcile transactions, flag discrepancies in real time, and provide actionable insights through intuitive dashboards and reports. It's built on Python’s FastAPI, facilitating seamless communication between microservices. The platform achieves excellent scalability by leveraging a range of AWS services, enabling dynamic load balancing and automated failover to maintain high availability. Integrating CI pipelines using Jenkins, Ansible, Docker, and Kubernetes minimizes downtime while accelerating the release process. Enhanced security is ensured by incorporating OAuth2 and JWT-based authentication mechanisms. Overall, the system is optimized for both speed and resilience, capable of efficiently processing millions of datasets.

Education

2023 - 2024

Master's Degree in International Business

Manchester Metropolitan University - Manchester, UK

2020 - 2022

Master's Degree in Business Administration

European University of Lefke - Lefka, Cyprus

2016 - 2020

Bachelor's Degree in Computer Engineering

European University of Lefke - Lefka, Cyprus

Certifications

OCTOBER 2024 - OCTOBER 2027

AWS Certified Cloud Practitioner

Amazon Web Services

Skills

Libraries/APIs

React, Node.js, REST APIs, Stripe, Social Media APIs

Tools

Plaid, Amazon Elastic Container Service (ECS), Jenkins, Ansible

Languages

TypeScript, Python, JavaScript, GraphQL, SQL, C++, C

Frameworks

NestJS, Express.js, Angular, React Native, Next.js, Tailwind CSS, Django, Ionic, OAuth 2, JSON Web Tokens (JWT)

Paradigms

Mobile Development, Hosting, Scalable Application, DevOps, Microservices

Platforms

iOS, Android, Amazon Web Services (AWS), Docker, Kubernetes, AWS IoT

Storage

MongoDB, Data Integration, PostgreSQL, MySQL

Industry Expertise

Project Management

Other

API Integration, Full-stack, Full-stack Development, Back-end, Payment APIs, Startups, Front-end, Front-end Architecture, Progressive Web Applications (PWAs), Web Development, UI Development, Front-end Development, Software Architecture, Single Sign-on (SSO), Back-end Development, Data Visualization, Technical Leadership, Architecture, Corporate Finance, Development Finance Institutions (DFI), Process Improvement, FastAPI, OpenAI, GitHub Actions, CI/CD Pipelines, Business Analysis, Business Management, Business Administration, Microprocessors, Data Structures, Algorithms, Web Scraping, Machine Learning, Scheduling, Database Analytics, Responsive Design, Program Management, Flutterwave, APIs

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