Serega K.
Private message 
Offer work 
Khmelnitskyi,
Ukraine
available for hire
Rating
Language proficiency level
Українська: fluent
Русский: intermediate
English: pre-intermediate
CV
Hello! I am a PHP / Front-end Developer with over 7 years of commercial experience.
My expertise lies in designing and developing high-load web applications, complex integrations, and custom business solutions. I build optimized, scalable, and lightning-fast products from scratch.
What I offer:
Custom WordPress Development: Developing unique themes and plugins tailored strictly to your business processes. You get a convenient and intuitive admin panel with zero bloated code.
Complex Logic & Multilingualism: Deep expertise in ACF / Carbon Fields and CPT UI. Setup of complex localization and automatic translations via WPML / Polylang.
High-Load Systems: Building robust project architectures designed to handle heavy traffic and run flawlessly without downtime.
APIs & Telegram Bots: Creating bots for business automation and seamlessly integrating websites with third-party services (CRMs, payment gateways, financial APIs).
My Tech Stack:
Backend & CMS: PHP, WordPress (Custom Themes/Plugins, ACF, Carbon Fields).
Frontend: JavaScript (ES6+), TypeScript, Next.js, HTML5 / CSS3.
Additional: Telegram bot development, REST APIs, speed and security optimization. Cloudflare integration and Google PageSpeed optimization.
I work for results: ensuring clean code, strictly meeting deadlines, and delivering solutions that drive profit for your project. I am always open to complex and non-standard challenges.
Drop me a message, and let's discuss the technical implementation of your idea!
Skills and abilities
Portfolio
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677 USD Multilingual financial platform on WordPress
Web Programming
API integration for authorization and exchange data (Massive.com)
The task was to transform a ready static layout into a full-fledged, dynamic web application based on WordPress. The project required non-standard backend solutions: setting up an external user system, working with real-time financial data, and deep integration of multilingual support.
… Development and integration stages:
Integration of the layout and creation of Page Builder (ACF)
Custom authorization system (API): [Instead of the standard WordPress user system, registration and login (authorization) were implemented through a secure connection to the client's external custom API.]
Working with financial data (Massive.com API): A complex integration with the massive.com service was set up to obtain current stock prices.
Automatic multilingual support (WPML + ACF): Seamless integration of the WPML and ACF plugins was configured to launch the project on the international market. Correct automatic translation of all custom content (including dynamic blocks of the builder) was ensured, significantly simplifying content management.
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677 USD Integration of layout with WordPress
Web Programming
A ready layout was provided, on the framework of which integration was done.
The integration (development) stage consisted of:
… Integration of the ready layout: Full implementation of the provided HTML framework on the WordPress CMS while adhering to all clean development standards.
Custom ACF Page Builder: Creation of a flexible page builder based on ACF. Allows the site owner to manage the structure and content through flexible blocks without programming knowledge.
AI integration (LLM): Implementation of a custom language model. A streaming mechanism (real-time text output) and dynamic rendering of responses on the frontend were realized.
Security (Cloudflare): Configuration of website protection, DNS optimization, and acceleration of project performance using the Cloudflare network.
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677 USD Redesign of the website on WordPress: responsive layout from Figma
HTML & CSS
Redesign of the website on WordPress: responsive layout from Figma, customization through ACF, and integration with Cloudflare
The main task of the project was to completely update the visual part of the website according to the new design layout. The work was carried out "painlessly" for the business — with full preservation of existing content, link structure, and SEO metrics.
… Development stages:
Layout from Figma
WordPress customization (ACF): Development of a child theme
Protection and acceleration (Cloudflare)
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113 USD Development of a website for a dental clinic
PHP
Development of a website based on WordPress for a dental clinic. The first stage involved cross-browser responsive layout from #Figma. The following technologies were used: #HTML/CSS/JavaScript/jQuery #ES6 #slickslider #SCSS/Gulp #AJAX.
The next stage is the integration of the page on #WordPress #PSD-to-WordPress with the ability to edit all visible content. Dynamic filtering and pagination without page reload have also been implemented.
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16 USD Page development
HTML & CSS
Product page layout
#javascript #html #css #front-end #js
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68 USD Site of Reliance Services
Website Development
Create a website under key. Integration + WardPress.
#php #javascript #html #css #jquery #Front-end #cms #Wordpress
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113 USD Front-end development of the streaming portal
HTML & CSS
Front-end development of a streaming video portal. Under Full HD. The service is designed for FullHD TVs.
#javascript #html #css #jquery #Front-end #wrap #wrap
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135 USD Creating a website under the key
Website Development
Adaptive site edition + programming and integration in WordPress CMS.
#php #javascript #html #css #jquery #Front-end #cms #Wordpress
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135 USD Personal corporate blog
Website Development
Adaptive version on the finished layout, integration into the CMS WordPress.
Creating a cast topic. Implementation and programming of the website.
#php #javascript #html #css #jquery #Front-end #cms #Wordpress
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23 USD Interface of Web Games
HTML & CSS
FullHD
#JavaScript #html #css #jquery #Front-end
Reviews and compliments on completed projects 2
2 October 2025
16 USD
Create a page according to the Figma layout
The work was done neatly and submitted on time.
It's nice to do business.
10 February 2022
68 USD
Create a new wordpress page with a quiz
A good professional, doing everything timely and clearly. It’s a word, and that’s the most important.
There is a solution to any difficulty, I recommend.
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