John Mark Bolongan

I am a Full Stack Developer who worked extensively with modern web technologies and complex business systems. My experience covered Laravel, Node.js, Vue.js, React, REST API development, and database engineering using MySQL and PostgreSQL. Throughout my career, I handled projects that required clean architecture, scalable solutions, and deep integration with external platforms.

I worked on a large multi service SaaS ecosystem where I managed backend services, frontend applications, and integrations with payment and accounting platforms. I handled Stripe Connect, Shopify API, UniMicro, Tripletex, and Fiken integrations and many more. I built service classes, authentication flows such as OAuth and certificate based authentication, syncing jobs for customers, products, and invoices, and administrative panels that allowed organizations to manage accounting settings and operational workflows.

I handled Stripe Connect onboarding, payout structures, secure payment flows, and 3D Secure transactions. I created custom WooCommerce payment plugins that allowed merchants to process payments through our system. I ensured that every transaction followed correct fee rules, security requirements, and verification steps.

I created responsive and efficient frontend applications using Vue and React. I focused on maintainable state management, reusable components, and clear separation of concerns. I translated user interface designs into production ready interfaces and ensured that the entire flow worked smoothly with backend systems.

I also worked with DevOps practices. I used Docker, Linux, GitLab pipelines, queue workers, and container based development environments. I ensured that local, staging, and production systems were consistent and easy to maintain. I monitored logs, optimized performance, and resolved deployment issues that affected the ecosystem.

I often handled legacy codebases and improved them through refactoring and documentation. I diagnosed issues in complex environments, resolved conflicts between services, and stabilized integrations that had high business impact. I communicated regularly with product teams, managers, and clients to ensure that expectations and results remained aligned.

Throughout my work, I valued reliability, clarity, and continuous improvement. I approached each project with the goal of delivering durable systems that supported real business operations. I enjoyed solving technical challenges, working on integrations, and improving workflows that depended on accuracy and automation.

I brought a strong mix of technical capability, analytical thinking, and ownership to every task, and I consistently aimed to deliver solutions that performed reliably in production environments.