Solomon John

Full Stack Software Engineer with strong expertise in Backend Engineering, DevOps, Mobile Application Development, and Production Deployment. Experienced in building scalable, high-performance systems using Node.js, NestJS, React.js, Next.js, and React Native. Strong knowledge of backend architecture, system design, API development, CI/CD pipelines, server management, mobile app testing, and production deployments.

Delivered real-world systems including a multi-vendor e-commerce platform (Amazon-style marketplace), SaaS platforms, transportation systems, inventory management systems, CMS platforms, blockchain integrations, and real-time communication systems.

Software Engineer / Backend Engineer - Ahiaglobal - USA & Nigeria

(2025-01)

Multi-Vendor E-Commerce Platform

• Built backend architecture for a multi-vendor e-commerce platform similar to Amazon
• Designed scalable APIs for vendors, customers, orders, payments, and logistics
• Implemented secure authentication and role-based access control systems
• Built database structures for product catalogs, transactions, and vendor operations
• Optimized backend performance and system scalability for production usage
• Managed deployment pipelines and production environments
• Improved system stability and reliability for growing marketplace operations

Software Engineer / DevOps Engineer - Walexbiz

(2022-02 - 2022-12)

• Developed backend APIs for enterprise applications
• Managed server deployment and production infrastructure
• Built and maintained CI/CD pipelines for automated deployment
• Collaborated with frontend engineers for full system integration
• Improved backend performance and system reliability
• Participated in system architecture design and implementation

Backend Engineer (Freelance / Contract) - Cruztechnology

(2021-01)

• Built backend systems for multiple client projects
• Developed RESTful APIs and SaaS backend logic
• Supported production systems and ongoing maintenance
• Worked remotely on enterprise-level software solutions
• Contributed to scalable backend architecture design
• Provided long-term technical support for deployed applications

Backend Engineer / Mobile Engineer - Rehope Riders

(2025-01)

• Built backend systems for transportation platform
• Developed and maintained React Native mobile application
• Performed mobile application testing and quality assurance before release
• Managed Android application build and Google Play Store deployment
• Implemented real-time APIs for live system updates
• Improved mobile app performance and stability

Bachelor of Science - Computer Science - University of Calabar (2023-01)