Kayode Olaoye Samuel

• Built and optimized database schemas following best practices for financial applications.
• Designed and developed RESTful APIs for a banking application, handling core financial services and bill payments.
• Integrated third-party payment providers to facilitate seamless bill payment transactions.
• Worked extensively with NestJS, PostgreSQL, and GitHub Actions, ensuring system scalability, performance, and reliability.

• Designed and implemented APIs for product and order management, ensuring efficient data retrieval and processing, and achieving a 95% success rate in order fulfillment.
• Built comprehensive payment systems for subscription-based system management, ensuring seamless and 100% secure transactions, and enabling efficient revenue management.
• Developed and integrated push notifications using Firebase messaging, enhancing user engagement and experience, resulting in a 25% increase in user retention.
• Documented APIs using SWAGGER and POSTMAN, ensuring clear and concise documentation for developers and improving API adoption by 20%.

• Building APIs for the management of the educational platform, facilitating seamless interaction between the frontend and backend systems, and handling 10,000+ requests daily.
• Collaborating closely with front-end developers and UX/UI designers to integrate back-end functionalities seamlessly into the platform's user interface, delivering a cohesive and intuitive user experience for over 3,000 active users.
• Conducting thorough performance optimization and scalability enhancements on backend systems, ensuring seamless user experiences even during periods of high traffic and usage spikes, with a 30% reduction in latency and a 25% increase in throughput.
• Designing and implementing automated testing suites to rigorously validate the functionality and reliability of the backend systems, contributing to overall system stability and quality assurance.

• Led the development of a comprehensive health management system, integrating electronic health records (EHRs), telemedicine functionality, and analytics tools to improve patient care and outcomes, serving over 3000 patients and processing 500+ appointments monthly.
• Developed and maintained APIs for managing user data and doctor appointment scheduling, optimizing data exchange and system performance, 50% reduction in data exchange latency, and a 20% increase in system performance.
• Designed and utilized various encryption and decryption methods to secure user data, protecting sensitive information, with a 100% data encryption rate and 0 security breaches in the last year.
• Managed deployment to AWS EC2 Instance, ensuring high availability and scalability, with a 50% increase in scalability.

• Created 40+ APIs across NodeJS, Golang, and C#.
• Enhanced API transparency and usability by implementing comprehensive SwaggerUI documentation, providing clear and interactive API documentation for seamless integration and consumption, resulting in a 30% increase in API adoption.
• Used a Dependency Injection (DI) and Inversion of Control (IoC) backend architecture for the C# and NodeJS servers, enabling easier unit testing and achieving a 90% test coverage rate.
• Implemented Redis Cache and Message Queue (RabbitMQ) for swift communications between our multiple servers, reducing latency by 40% and increasing message processing speed by 50%.

2023 — Available on Playstore

2023

2022 — Available on Playstore

2021 — Web, Playstore

2021