Onyenagubo Obinna

Results-driven Full Stack Developer with experience designing, developing, and deploying responsive web applications using modern technologies. Proficient in JavaScript, TypeScript, React, Next.js, Node.js, Express.js, Python, Django, Firebase, Supabase, PostgreSQL, MongoDB, and Prisma. Skilled in building secure authentication systems, RESTful APIs, database design, cloud integration, and responsive user interfaces.

Passionate about writing clean, maintainable code and delivering scalable solutions that enhance user experience. A fast learner and collaborative team player with strong problem-solving abilities, committed to continuous improvement and staying current with emerging technologies.

Backend Developer - ElontechNigeria Limited - Lagos, Nigeria

(2023-02 - 2025-09)

• Designed, developed, and maintained scalable backend systems using Python, Firebase, and PostgreSQL, building secure APIs and business logic to support modern web and mobile applications developed with Next.js, React.js, and React Native.
• Built and integrated RESTful APIs to handle user authentication, data processing, payment workflows, notifications, and third-party service integrations, ensuring reliable communication between frontend applications and backend services.
• Designed and optimized PostgreSQL databases by creating normalized schemas, writing complex SQL queries, implementing indexing strategies, and performing query optimization to improve application performance and data integrity.
• Implemented secure authentication and authorization using Firebase Authentication, including role-based access control, password reset functionality, email verification, and Firebase Security Rules to protect application resources and sensitive user data.
• Developed backend services for real-time applications using Firebase Firestore and Firebase Cloud Storage, enabling live data synchronization, secure file management, transaction processing, and efficient cloud-based data storage.
• Collaborated with frontend developers to integrate backend services into Next.js, React.js, and React Native applications, ensuring seamless API consumption, efficient data flow, comprehensive error handling, and high application reliability across multiple platforms.
• Managed backend deployment, monitoring, maintenance, and performance optimization by troubleshooting production issues, refactoring legacy code, improving API response times, maintaining technical documentation, and implementing best practices for scalability, security, and long-term

Full Stack Developer - Freelance - Ojo, Nigeria

(2019-05 - 2022-08)

• Designed, developed, and deployed full-stack web applications using Next.js, React.js, Python, Firebase, and PostgreSQL, delivering responsive and scalable solutions for clients across different industries.
• Built modern, mobile-first user interfaces with React.js and Next.js, ensuring responsive layouts, accessibility compliance, and excellent user experience across desktop and mobile devices.
• Developed secure backend services and RESTful APIs using Python, integrating business logic, authentication, and database operations to support production-ready applications.
• Implemented user authentication and authorization using Firebase Authentication, including email/password login, password recovery, role-based access control, and secure session management.
• Designed and managed relational databases with PostgreSQL, creating efficient schemas, writing optimized SQL queries, and improving application performance through indexing and query optimization.
• Integrated Firebase Firestore and Firebase Storage for real-time data synchronization, cloud file storage, notifications, and seamless client-server communication.
• Developed cross-platform mobile applications using React Native, building reusable components and delivering consistent experiences on both Android and iOS.

Odoo - Packetclouds - Lagos, Nigeria

(2026-04 - 2026-07)

• Customized and configured core Odoo modules, including Sales, CRM, Inventory, Purchase, Accounting, Manufacturing, and Website, to meet client-specific business requirements, improving operational efficiency and streamlining day-to-day workflows.
• Developed and customized Odoo applications using Python, creating custom models, fields, views, menus, server actions, and automated workflows while extending existing modules without affecting core system functionality.
• Configured user roles, access rights, record rules, and security groups to ensure secure, role-based access control, protecting sensitive business data while enabling employees to perform their responsibilities efficiently.
• Designed and implemented automated business processes using scheduled actions, email templates, approval workflows, and server actions to reduce manual work, improve productivity, and ensure consistency across business operations.
• Integrated Odoo with external services and third-party applications through REST APIs and data import/export tools, enabling seamless synchronization of customer records, inventory data, financial information, and business transactions.
• Performed system maintenance, troubleshooting, and performance optimization by identifying and resolving functional and technical issues, upgrading modules, testing new features, managing database backups, and ensuring reliable application performance.
• Collaborated with business stakeholders to gather requirements, analyze existing workflows, provide technical recommendations, conduct user training, prepare system documentation, and deliver customized Odoo solutions that aligned with organizational goals and business processes.

Marine Engineering - Niger Delta University (2019-02 - 2025-05)