Davson

Database Developer & Administrator

Dataflow Events • ZZP

Jun 2022 - Present • 4 yrs 1 mo

As a Database Developer & Administrator, I design, develop, and optimize secure, scalable databases that power modern web applications, SaaS platforms, and business systems. I specialize in database design, performance optimization, query development, data migration, backup strategies, and database security. I work with MySQL, PostgreSQL, MongoDB, and SQL to build efficient database architectures that support high-performance applications. Whether creating a new database, optimizing existing systems, or integrating databases with REST APIs and backend services, I deliver reliable solutions focused on scalability, data integrity, and long-term performance. My goal is to help businesses manage data efficiently while ensuring security, reliability, and seamless application performance. Skills Database Design Database Development Database Administration MySQL PostgreSQL MongoDB SQL NoSQL Query Optimization Database Migration Data Modeling Database Security Performance Optimization Backup & Recovery Node.js

Backend & API Integration Developer

Freelancer.com • ZZP

Jul 2021 - Present • 5 yrs

As a Backend & API Integration Developer, I build secure, scalable, and high-performance backend solutions for businesses, startups, and SaaS platforms. I specialize in Stripe API integration, REST API development, payment gateway integration, OAuth authentication, webhook implementation, and custom backend systems. My expertise includes developing reliable APIs, integrating third-party services, automating business workflows, troubleshooting API issues, and optimizing backend performance. I focus on writing clean, maintainable code while ensuring security, scalability, and seamless functionality. I work with modern technologies including Node.js, Express.js, Laravel, PHP, JavaScript, TypeScript, MySQL, PostgreSQL, and MongoDB. My goal is to help businesses streamline operations, improve user experience, and build dependable backend systems that support long-term growth. Skills Backend Development API Integration REST API Stripe API Stripe Integration Payment Gateway Integration PayPal API OAuth 2.0 Webhooks Node.js Express.js Laravel PHP JavaScript TypeScript MySQL PostgreSQL MongoDB

Payment Gateway Integration Specialist

Software Engineering Daily • ZZP

Jun 2021 - Present • 5 yrs 1 mo

As a Payment Gateway Integration Specialist, I help businesses implement secure, reliable, and seamless online payment solutions. I specialize in integrating Stripe, PayPal, and other payment gateways into websites, web applications, SaaS platforms, and e-commerce systems. My expertise includes payment gateway setup, Stripe Checkout, Stripe Connect, PayPal API integration, webhook implementation, subscription billing, recurring payments, OAuth authentication, and resolving payment-related issues. I focus on secure implementation, clean code, and smooth user experiences that improve payment reliability and customer satisfaction. I work with Node.js, Express.js, Laravel, PHP, JavaScript, TypeScript, REST APIs, MySQL, PostgreSQL, and MongoDB to deliver scalable payment solutions tailored to each client's business needs. Skills Stripe API Stripe Integration PayPal API Payment Gateway Integration Stripe Checkout Stripe Connect Webhooks REST API OAuth 2.0 Node.js Express.js Laravel PHP JavaScript TypeScript