Piyaphorn Hongmen (Apple Rinquest)

Senior WordPress and PHP Developer

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Senior WordPress & PHP Developer

Location: Chiang Mai, Thailand

Service area: The USA, Europe, and Thailand

Language: English (Fluent), Thai (Native)

Professional Summary

Senior WordPress and PHP Developer with 12 years of experience building high-performance websites, plugins, and themes. Specializing in WordPress, WooCommerce, custom API integrations, and performance optimization. Proven success delivering projects for clients in the US, Europe, and Asia. Bilingual in English and Thai with strong collaboration skills for remote, global teams.

Core Skills

CMS & E-commerce: WordPress, WooCommerce, ACF Pro, WPML, Elementor Pro, CraftCMS3

Backend: PHP (Yii2, CodeIgniter), MySQL, MSSQL, MariaDB

Frontend: JavaScript, jQuery, AJAX, HTML5, CSS3, SASS/LESS, Twig, Bootstrap, Tailwindcss, Foundation

APIs & Integrations: RESTful APIs, ChatGPT API, HubSpot API, Zerobounce API, VAPI APIs, Google Analytics, VWO (A/B testing)

Design Tools: Figma

Source Control: GitHub, Bitbucket, Git

Package Managers: Node.js, Composer, Gulp

Other: Website troubleshooting, migrations, cross-browser compatibility, performance optimization

Professional Experience

2025
Open to new opportunities
Seeking a Senior WordPress Developer?

Let's collaborate to transform your vision into a powerful and functional reality. Get in touch to discuss your needs.

Dec 2022 - Nov 2024
AG5 Skills Management Software - Remote
Senior WordPress Developer
  • Assist in the development of additional features for the website.
  • Translate existing Figma designs into WordPress to create new website screens.
  • Enhance the WordPress theme's performance.
  • Collaborate closely with the head of the marketing team.
  • Develop custom code for the Advanced Custom Fields Pro and WPML plugins to integrate with the site.
  • Integrate the site into A/B testing (server-side testing) and create the A/B testing for each use case.
  • Integrate the ChatGPT API into the site to create our own AI chatbot.
  • Improve page loading speed tracking using the PageSpeed Insights tool from Google. Core Web Vitals assessment shows passing results for both mobile and desktop. 
  • Integrate a third-party service to filter out the spam business emails before sending form data to HubSpot, which is a popular marketing tool.
July 2020 - Present
Self-employed - Remote
WordPress/PHP Developer
  • Gathering the requirements from the customers
  • Planning the project
  • Design both the functionality and the user interface
  • Development and delivery to the customers
  • Design new features for existing websites
  • Customize themes and plugins to meet the client’s requirements
  • Discover the problems and devise solutions for clients
  • Manage a user guide to help clients understand site features and the management of the website
  • Build websites using WordPress, WooCommerce, and CraftCMS3
  • Create a custom dashboard with tailored access control for a CraftCMS3 project.
  • Build a web application using PHP frameworks(Yii2, Codeigniter)
  • Work as a freelancer under a digital agency company in Bangkok, the Netherlands, and Finland.
  • Integrate the Voice AI API into a custom dashboard in WordPress and create the dashboard with customized access control.
May 2020 – July 2020
Haircut Delivery Co.,LTD - Onsite
Senior PHP Developer
  • Developed and maintained custom PHP and WordPress solutions.

  • Collaborated with designers and product managers to build client websites.

  • Improved cross-browser compatibility and responsive layout issues.

  • Develop a dashboard in CodeIgniter for connecting to a mobile API
Jan 2017 - May 2020
Self-employed - Remote
WordPress/PHP Developer
  • Gathering the requirements from the customers
  • Planning the project
  • Design both the functionality and the user interface
  • Development and delivery to the customers
  • Design new features for existing websites
  • Customize themes and plugins to meet the client’s requirements
  • Discover the problems and devise solutions for clients
  • Manage a user guide to help clients understand site features and management for the website
  • Build websites using WordPress
  • Build a web application using PHP frameworks(Yii2, Codeigniter) 
  • Work as a freelancer under the digital agency company in Bangkok
Aug 2015 – Dec 2016
Hiper Hipo's SaaS platform - Contract
VP of Development
  • Build websites using WordPress
  • Build a web application using Codeigniter (PHP Framework)
  • Build an MS Access application for the client
  • Consult and provide the whole plan, including time frame and technologies for HiperHipo’s clients
Feb 2015 – Aug 2015
Self-employed – Las Vegas, Nevada
WordPress/PHP Developer
  • Build websites using WordPress
  • Build a web application using Yii2 (PHP framework)
April 2013 – Nov 2014
Self-employed – Chiang Mai, Thailand
WordPress Developer
  • Build websites using WordPress
  • Customize themes and plugins to meet clients’ requirements (follow best practice on Codex)
  • Create new themes and plugins to meet clients’ requirements (follow best practice on Codex)
  • Integrate third parties into the WordPress site, such as Google Analytics, MailChimp form, and Rest API
  • Support and maintain the website for clients
  • Communicate directly with clients
  • Work as freelancer under the digital agency company in Chiang Mai and Bangkok
Nov 2009 – Mar 2013
Chiang Mai Lanna Business Services LTD – Chiang Mai, Thailand
Senior Web Developer
  • Build a web application using Yii1
  • Build a web application using CakePHP
  • Customize the online LimeSurvey application
  • Gathering the requirements from stakeholders
  • Planning, designing, developing, and deploying to the internal server
  • Discover the problems and devise solutions for stakeholders
  • Improve the quality and performance of the products
  • Report to the team leader weekly
  • Do Scrum daily
  • Work with multi-cultural environments
Feb 2009 – Sep 2009
The Website Marketing Group – Sydney, Australia
PHP Developer
  • Develop and customize websites to meet clients’ requirements
  • Build a website using Modx (CMS based on PHP)
Aug 2004 – April 2008
Aware Corporation LTD – Chiang Mai, Thailand
Senior Developer
  • Build a Windows application using Oracle Forms and Report tools
  • Build a Windows application using Oracle Database 10g
  • Build a Windows application using Visual Basic and MSSQL
  • Build a website using PHP, Apache, and MySQL
  • Outsource as Oracle developer for company’s clients in Bangkok
  • Support the client’s issue on site
  • Training the clients on-site
1999 – 2004
SoftSquare International Co,LTD – Chiang Mai, Thailand
Programmer
  • Build a Windows application using Oracle Forms and Report tools
  • Build a Windows application using Oracle Database 10g
  • Support the client’s issue on site
  • Training the clients on-site
  • Train junior developers in-house

Education

2000 – 2002
Master's degree – Information Technology and Management
Chiang Mai University
  • Principle of computer programming
  • Data communication and information infrastructure
  • Management information systems and technology
  • Information system development
  • Management and organization behavior
  • Database management and design
  • Information knowledge-based system
  • Application of management information systems
  • Operations research and computer simulation
  • Strategic information management
  • Seminar in information technology and management
  • Information system security and control
1995 – 1999
Bachelor's degree – Computer Science
Chiang Mai University
  • Calculus
  • C programming
  • Math logic
  • Computer system
  • Advanced programming techniques
  • Data structures
  • System analysis and design
  • Computer and software
  • Software engineer
  • Data communication & computer network
  • Programming language
  • Data base system
  • Manage information system
  • Computer architecture and organization
  • Compiler construction
  • Artificial Intelligence
  • Operation system

Hobbies

Rock climbing, gaming, drum player,  blogger

Flexible Collaboration & Value-Driven Rates

  • Hourly Rate: USD 50 per hour for projects requiring ongoing work, iterative development, or flexible scope.

  • Fixed-Price Projects: For small projects with stable and well-defined requirements, I provide competitive fixed-price quotes based on a detailed assessment of your needs. Please share your project details for a customized estimate.

  • Engagement Types: I am available for:

    • Part-Time: Ideal for ongoing support or smaller-scale tasks.

    • Full-Time: For intensive, time-bound projects requiring dedicated focus.

    • Contract: For specific deliverables or long-term collaborations.