Senior Software Engineer
Bohol
I'm Herald Felisilda, a Senior Full-Stack Developer with 20+ years of experience building web apps, APIs, and enterprise systems from the ground up. What I offer: · End-to-end development — architecture, frontend/backend, databases, DevOps, security, and infrastructure · Deep expertise in Codeigniter,C#/.NET, PHP/Laravel, Node.js, AngularJS, SQL, Docker, and CI/CD · Proven track record: built APIs connecting 250+ branches, developed e-commerce platforms, integrated payment gateways · Strong client-facing skills — I translate business needs into scalable technical solutions What sets me apart: I don't just code — I own the entire lifecycle, from concept to deployment to support. I combine technical depth with a business mindset, ensuring your project is secure, performant, and aligned with your goals. Let's partner to turn your vision into reliable, production-ready software.
UnifiedAR, contract
Jun 2022 to Sep 2026
At UnifiedAR, my development responsibilities cover the full software lifecycle. I design, develop, and maintain robust RESTful APIs that power both internal platform functionality and external client integrations. I contribute to UI/UX architecture and implementation, building responsive, user-friendly interfaces using modern frontend technologies. I translate business and partner requirements into technical solutions, delivering custom platform features and system integrations. To accelerate development, I leverage AI-assisted tools like Cursor AI to improve coding efficiency and productivity. I also manage GitHub repositories, enforce branching strategies, and oversee CI/CD pipelines to ensure reliable, automated deployments across staging and production environments.
Du Ek Sam, Inc. , full_time
Jan 2015 to Feb 2022
Key Development Contributions: · Architected a Centralized API Platform: Designed and deployed a RESTful API platform that connected over 250 nationwide branch locations to a unified central server. · Led Enterprise Application Development: Architected and developed core enterprise applications that supported the company's nationwide business operations. · Enhanced HR & Payroll Systems: Spearheaded major enhancements to the company's HR and Payroll systems, streamlining centralized business processes. · Managed Development Workflows: Oversaw developer workflows, task allocation, and project priorities to ensure consistent and timely delivery. · Provided Technical Leadership: Led the technical direction across software architecture, development, integration, and deployment for the company .
Gramercy Forge Int'l/Charles P. Rogers Bed, full_time
Feb 2007 to Jan 2015
Key Development Contributions: · Developed and Maintained E-Commerce Platform: Built and maintained the primary e-commerce website using ZenCart, PHP, MySQL, ExtJS, jQuery, AJAX, and JSON. · Developed Back-Office Applications: Created custom internal business applications using CodeIgniter to streamline company operations. · Built PPC Landing Pages: Designed and developed pay-per-click (PPC) landing pages to support digital marketing campaigns. · Implemented SEO Initiatives: Applied technical and on-page SEO strategies to improve search engine visibility and drive organic traffic. · Designed and Maintained CMS Websites: Built and maintained websites using WordPress and Joomla for various brand and marketing needs. · Integrated Payment Solutions: Integrated online payment gateways, including credit card processors and PayPal APIs, to enable secure e-commerce transactions. · Administered Linux Servers: Managed and maintained dedicated Linux web servers to support production environments. · Coordinated with US-Based Teams: Collaborated with US-based project managers and company leadership to align technical deliverables with business objectives. · Led Technical Coordination: Coordinated technical tasks and assignments across team members to ensure timely project delivery. Technologies Used at Gramercy Forge: · Backend: PHP, CodeIgniter, ZenCart · Frontend: ExtJS, jQuery, AJAX, JSON · CMS: WordPress, Joomla · Database: MySQL · Payments: Credit card processors, PayPal APIs · Servers: Dedicated Linux web servers · SEO: Technical and on-page SEO
NCR - Cebu Development Center, full_time
Sep 2003 to Sep 2007
Key Development Contributions: · Developed Web, POS, and Back-Office Software: Built and maintained software for the Advance Checkout Solution (ACS) platform, including web-based interfaces, POS terminals, and back-office systems. · Performed Extensive Testing: Conducted functional, integration, component, endurance, stress, and regression testing using custom test cases and automated WinRunner scripts. · Debugged and Certified Enterprise Systems: Tested and certified systems across Windows XPe and Windows Server 2003 environments. · Worked with POS Hardware: Collaborated with NCR POS terminals, FastLane systems, and back-office infrastructure to ensure seamless integration. · Developed Internal Web Applications: Built internal tools using PHP, MySQL, ASP, and Microsoft SQL Server to support business operations. · Created Time-Monitoring Application: Developed an automated tool for tracking project metrics and developer hours to improve team productivity. · Provided Technical Support: Delivered Tier 2/Tier 3 technical support for software, hardware, deployment, and runtime issues. --- Technologies Used at NCR: · Languages: PHP, ASP, Java (implied), SQL · Databases: MySQL, Microsoft SQL Server · Testing: WinRunner, custom test cases · Environments: Windows XPe, Windows Server 2003 · Hardware: NCR POS terminals, FastLane systems