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Lead full-stack engineer with 17+ years of experience building, shipping, and maintaining complex web applications. Proficient across the entire stack — from React/TypeScript frontends to Node.js/PHP backends, with deep expertise in WordPress ecosystems, headless architectures, and cloud-native infrastructure. Skilled in clean code architecture, SEO-friendly development, and comprehensive project documentation. Strong background in plugin development for various industries, REST/GraphQL API integration, and converting designs into fully functional themes. Collaborative team player with proven project management skills and a deep understanding of agile methodologies. Experienced in leading cross-functional teams and mentoring junior developers. Keen on staying current with emerging technologies and industry trends — from AI-powered integrations to modern JavaScript frameworks and cloud platforms (AWS, Kubernetes, Docker).…Lead full-stack engineer with 17+ years of experience building, shipping, and maintaining complex web applications. Proficient across the entire stack — from React/TypeScript frontends to Node.js/PHP backends, with deep expertise in WordPress ecosystems, headless architectures, and cloud-native infrastructure. Skilled in clean code architecture, SEO-friendly development, and comprehensive project documentation. Strong background in plugin development for various industries, REST/GraphQL API integration, and converting designs into fully functional themes. Collaborative team player with proven project management skills and a deep understanding of agile methodologies. Experienced in leading cross-functional teams and mentoring junior developers. Keen on staying current with emerging technologies and industry trends — from AI-powered integrations to modern JavaScript frameworks and cloud platforms (AWS, Kubernetes, Docker).

KEREM YILMAZ GUNEY

Full Stack Developer, Web Developer, Back-End Developer, +3

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Lead full-stack engineer with 17+ years of experience building, shipping, and maintaining complex web applications. Proficient across the entire stack — from React/TypeScript frontends to Node.js/PHP backends, with deep expertise in WordPress ecosystems, headless architectures, and cloud-native infrastructure. Skilled in clean code architecture, SEO-friendly development, and comprehensive project documentation. Strong background in plugin development for various industries, REST/GraphQL API integration, and converting designs into fully functional themes. Collaborative team player with proven project management skills and a deep understanding of agile methodologies. Experienced in leading cross-functional teams and mentoring junior developers. Keen on staying current with emerging technologies and industry trends — from AI-powered integrations to modern JavaScript frameworks and cloud platforms (AWS, Kubernetes, Docker).…Lead full-stack engineer with 17+ years of experience building, shipping, and maintaining complex web applications. Proficient across the entire stack — from React/TypeScript frontends to Node.js/PHP backends, with deep expertise in WordPress ecosystems, headless architectures, and cloud-native infrastructure. Skilled in clean code architecture, SEO-friendly development, and comprehensive project documentation. Strong background in plugin development for various industries, REST/GraphQL API integration, and converting designs into fully functional themes. Collaborative team player with proven project management skills and a deep understanding of agile methodologies. Experienced in leading cross-functional teams and mentoring junior developers. Keen on staying current with emerging technologies and industry trends — from AI-powered integrations to modern JavaScript frameworks and cloud platforms (AWS, Kubernetes, Docker).

Available to hire

Lead full-stack engineer with 17+ years of experience building, shipping, and maintaining complex web applications. Proficient across the entire stack — from React/TypeScript frontends to Node.js/PHP backends, with deep expertise in WordPress ecosystems, headless architectures, and cloud-native infrastructure.

Skilled in clean code architecture, SEO-friendly development, and comprehensive project documentation. Strong background in plugin development for various industries, REST/GraphQL API integration, and converting designs into fully functional themes.

Collaborative team player with proven project management skills and a deep understanding of agile methodologies. Experienced in leading cross-functional teams and mentoring junior developers.

Keen on staying current with emerging technologies and industry trends — from AI-powered integrations to modern JavaScript frameworks and cloud platforms (AWS, Kubernetes, Docker).

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Work Experience

Engineering Consultant (Full-Stack & Architecture) at Freelance – Worldwide (Remote)

July 1, 2023 - Present

Engineered custom Gutenberg blocks for WordPress with AI-powered features; Architected and deployed an Apollo Server GraphQL authentication system to secure user data; Built a Next.js-based JSON server page management system to optimize content delivery; Implemented new e-commerce features including payments and enhanced catalogs; Integrated third-party APIs into a travel booking platform; Led a community project developing a church website for stable, accessible online presence.

Engineering Consultant (Full-Stack & Platform) at HelloBetter – Berlin, Germany (Remote · Contractor)

April 1, 2024 - April 1, 2026

Helped develop and maintain HelloBetter's marketing site, collaborating with Marketing to deliver fast, scalable content-driven solutions; Transitioned backend content from WordPress to Strapi and maintained a headless WordPress blog; Implemented a headless Astro frontend that consumes content from Strapi and WordPress; Supported rapid marketing-led updates for campaign, SEO, and content needs; Contributed to cloud-native infrastructure (Kubernetes, Docker, Redis) on AWS (CloudFront, Load Balancers, EC2, RDS) and managed multi-environment deployments with Bitbucket CI/CD; Worked with cross-functional teams to ensure platform stability.

Director of Engineering at Codistry LLC – Los Angeles, US (Remote)

January 1, 2022 - July 1, 2023

Directed engineering initiatives, overseeing software development and system architecture; Led development of a Drug Management web app for LA County Health Services; Improved and maintained The Office of Diversion and Reentry web platform; Drove migration and modernization of WordPress/React-based projects; Mentored engineers and established best practices for scalable, maintainable code; Collaborated with product, marketing, and operations to align technical roadmap with client goals.

Lead Software Engineer at Codistry LLC – Los Angeles, US (Remote)

December 1, 2020 - January 1, 2022

Led full‑stack development for mission-critical applications, including WordPress and React-based platforms; Implemented new features for product catalogs and ecommerce flows; Integrated third-party services and payment gateways; Managed deployments and code reviews, ensuring code quality and timely delivery.

Senior Developer at Codistry LLC – Los Angeles, US (Remote)

May 1, 2019 - December 1, 2020

Developed and supported WordPress and React applications, implementing agile features per client needs; Improved legacy codebases and coordinated with design and QA; Led API development for multi-platform usage; Mentored junior developers and established coding standards.

Senior Frontend Developer at ProTranslate.Net – Istanbul, Turkey (Hybrid)

April 1, 2019 - September 1, 2019

Implemented new design on Symfony-based site; Collaborated with team; Dockerized and improved version control; Optimized site speed and scalability; Assisted backend with coding and troubleshooting; Built browser-compatible UI components; Conducted usability testing and bug fixing; Stayed current with new tech.

Founder & CTO at RKX Design Information Technology Co. – Istanbul, Turkey (On-Site)

October 1, 2015 - April 1, 2019

Founded and led a design/IT agency; Collaborated with designers and content managers to deliver WordPress projects; Led custom WordPress/WooCommerce plugin development; Advised clients on marketing and development; Troubleshot issues and mentored interns/junior developers; Focused on speed, quality and user experience.

Senior PHP / WordPress Developer at End International Productions Advertising Education Services – Istanbul, Turkey (On-Site)

May 1, 2017 - June 1, 2018

Spearheaded PHPWordPress development; Recruited and mentored team; Created WordPress themes/plugins; Improved performance and usability; Worked with Docker and version control; Stayed up-to-date with new technologies.

Mid-Level PHP / WordPress Developer at Foiegras Interactive Media – Istanbul, Turkey (Hybrid)

March 1, 2013 - October 1, 2015

Developed WordPress sites and plugins; Built a large shopping mall video content site; Integrated customer data with WordPress via SOAP/XML; Collaborated with partners to finalize designs; Troubleshot issues and improved user experience.

PHP / WordPress Developer at Freelance – Istanbul, Turkey (Remote)

June 1, 2011 - March 1, 2013

Built and maintained WordPress/Joomla sites; Converted mockups to themes; Created WordPress plugins; Built hybrid mobile apps with PhoneGap/Cordova; Provided ongoing maintenance and bug fixes; Explored new tech trends.

Junior Web Developer at YAN-MA-DAN LTD. CO. – Istanbul, Turkey (On-Site)

November 1, 2009 - December 1, 2010

Built company website UI with HTML/CSS/JS; Used WordPress for content updates; Implemented Google Campaigns and SEO; Analyzed site metrics to measure success.

Web Developer at Freelance – Istanbul, Turkey (Remote)

November 1, 2008 - November 1, 2009

Designed and implemented web pages with HTML/CSS/JS; Converted mockups into WordPress themes; Created WordPress plugins; Built hybrid mobile apps using PhoneGap; Maintained and patched web projects; Kept abreast of new tech.

Junior Web Developer at YAN-MADAN LTD. CO. – Istanbul, Turkey (On-Site)

November 1, 2009 - December 31, 2010

Built company website interfaces; Used WordPress for content updates; Implemented Google Campaigns and SEO; Used analytics to measure success.