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Backend Developer with 6+ years of experience designing and building robust backend systems, RESTful APIs, and database-driven applications. Skilled in backend architecture, authentication/authorization, API integration, and performance optimization across multiple technologies including PHP, ASP.NET, Node.js, Python, and MongoDB. I collaborate with cross-functional teams to deliver secure, scalable, high-performing applications for web and fintech/payment use cases. I focus on clean, maintainable code and continuous improvements to system reliability and data integrity, with experience integrating mobile apps and building admin/CMS solutions.…Backend Developer with 6+ years of experience designing and building robust backend systems, RESTful APIs, and database-driven applications. Skilled in backend architecture, authentication/authorization, API integration, and performance optimization across multiple technologies including PHP, ASP.NET, Node.js, Python, and MongoDB. I collaborate with cross-functional teams to deliver secure, scalable, high-performing applications for web and fintech/payment use cases. I focus on clean, maintainable code and continuous improvements to system reliability and data integrity, with experience integrating mobile apps and building admin/CMS solutions.

Celestine C. Njoku

Developer, Graphic Designer, Logo Designer, +5

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Backend Developer with 6+ years of experience designing and building robust backend systems, RESTful APIs, and database-driven applications. Skilled in backend architecture, authentication/authorization, API integration, and performance optimization across multiple technologies including PHP, ASP.NET, Node.js, Python, and MongoDB. I collaborate with cross-functional teams to deliver secure, scalable, high-performing applications for web and fintech/payment use cases. I focus on clean, maintainable code and continuous improvements to system reliability and data integrity, with experience integrating mobile apps and building admin/CMS solutions.…Backend Developer with 6+ years of experience designing and building robust backend systems, RESTful APIs, and database-driven applications. Skilled in backend architecture, authentication/authorization, API integration, and performance optimization across multiple technologies including PHP, ASP.NET, Node.js, Python, and MongoDB. I collaborate with cross-functional teams to deliver secure, scalable, high-performing applications for web and fintech/payment use cases. I focus on clean, maintainable code and continuous improvements to system reliability and data integrity, with experience integrating mobile apps and building admin/CMS solutions.

Available to hire

Backend Developer with 6+ years of experience designing and building robust backend systems, RESTful APIs, and database-driven applications. Skilled in backend architecture, authentication/authorization, API integration, and performance optimization across multiple technologies including PHP, ASP.NET, Node.js, Python, and MongoDB.

I collaborate with cross-functional teams to deliver secure, scalable, high-performing applications for web and fintech/payment use cases. I focus on clean, maintainable code and continuous improvements to system reliability and data integrity, with experience integrating mobile apps and building admin/CMS solutions.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Backend Admin / Backend Engineer at Flagler Technologies

January 1, 2023 - Present

Designed, developed, and maintained scalable backend systems for high-performance web applications. Specialized in secure API development, database optimization, and end-to-end integration between server-side logic and front-end interfaces, including authentication/authorization and data validation with MongoDB for performance and integrity.

Backend Developer at Waza Fintech Co.

May 1, 2021 - July 1, 2023

Led projects across scalable web platform development, API creation, and delivery of user-centric mobile apps. Built and maintained backend services that support fintech product flows, integrating business requirements with secure and efficient API behavior for mobile and web clients.

Senior Backend Developer at Nomba Financial Technologies

January 1, 2020 - Present

Designed and maintained backend systems powering high-performance fintech applications. Worked with front-end developers to support mobile apps and payment APIs, and configured/maintained backend APIs and related systems to ensure consistent service operation, secure access, and proper data handling.

Backend Developer at Yelocode Systems

August 1, 2019 - December 1, 2021

Built payment gateways for customer websites and supported mobile app integration to improve user-friendly performance. Collaborated with front-end developers to deliver dynamic, user-focused applications and software for clients, ensuring smooth backend support for application functionality.