Margarita Svistun
Private message 
Offer work 
Dnepr,
Ukraine
a little busy
Rating
Language proficiency level
English: pre-intermediate
Skills and abilities
Programming
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Content Management Systems
from 11 USD for hour
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Databases & SQL
from 11 USD for hour
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HTML & CSS
from 9 USD for hour
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Javascript and Typescript
from 10 USD for hour
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PHP
from 11 USD for hour
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Web Programming
from 11 USD for hour
Services
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Enterprise Resource Planning (ERP)
from 14 USD for hour
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Online Stores & E-commerce
from 11 USD for hour
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Payment Systems Integration
from 12 USD for hour
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Website Development
from 12 USD for hour
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Website Maintenance
from 10 USD for hour
Promotion
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Search Engine Optimization (SEO)
from 14 USD for hour
Administration
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Software & Server Configuration
from 11 USD for hour
Portfolio
- All works 60
- PHP 2
- Website Maintenance 1
- Content Management Systems 1
- Web Programming 7
- HTML & CSS 49
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Comprehensive frontend development of e-commerce on OpenCart
HTML & CSS
Implemented comprehensive frontend development of a fuel voucher online store based on OpenCart with full adaptation to the business logic of the project.
The project includes not just layout but the creation of a holistic user experience: from the first entry to the site to placing an order and working with a personal account.
… As part of the work:
- a complete set of e-commerce pages has been implemented: homepage, catalog (with various levels), product pages, cart, and order placement
- a user personal account has been developed (data management, order history, password change)
- complex interface logic for working with fuel vouchers has been implemented (selection of denominations, quantities, dynamic cost calculation)
- scenarios have been adapted for different types of users (individuals / legal entities)
- transactional pages and email templates have been laid out (orders, QR vouchers)
- additional pages have been implemented: “About Us,” “Delivery and Payment,” “Contacts,” “Gas Station Map,” 404
- full responsiveness and correct operation on mobile devices have been ensured
Technologies:
HTML, CSS (SCSS), JavaScript, OpenCart (Twig)
Particular attention has been paid to:
- precise compliance with the Figma layout
- clean and scalable code structure
- preparing the layout for integration with the backend without "hacks"
Demo: https://uni.it-lobster.com/
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Adaptive layout of the online store with integration into OpenCart
HTML & CSS
Performed adaptive layout and frontend integration of an online store on OpenCart based on designs from Figma.
Implemented:
— layout of all main pages: homepage, categories, product page, cart, checkout, blog
… — responsiveness for mobile, tablets, and desktop
— integration of the layout into the existing OpenCart structure
— custom UI components (sliders, modal windows, product gallery, product variations)
— refinement of the product gallery logic and image display
— styling of checkout and personal account
— optimization of display and UX elements
Technologies:
HTML, CSS (SCSS), JavaScript (jQuery), OpenCart
Features:
— precise reproduction of the design from Figma
— careful integration without disrupting the CMS logic
— attention to detail and element behavior (hover, animations, modals)
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Layout of an online clothing store (OpenCart, responsive)
HTML & CSS
Developed a modern online clothing store based on Figma layouts with full adaptation for mobile devices.
Within the project, the following was implemented:
- responsive layout of all pages (desktop + mobile)
… - homepage with banners and categories
- product catalog with filters and sorting
- product page with gallery and options
- search, wishlist, pop-ups
- cart and order checkout
- user personal account
- informational pages (blog, contacts, about)
Technologies:
- HTML5 / CSS3 / SCSS
- JavaScript (jQuery)
- Responsive layout (mobile-first)
- Integration into OpenCart 3
Features:
- neat pixel-perfect layout according to the design
- well-thought-out component structure
- optimization for different resolutions
- clean and maintainable code
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16 USD Adaptive interface adjustments (phone blocks) on OpenCart
Web Programming
Implemented the addition of text captions under the phone number on the OpenCart website (ocStore 3.0.3.7) according to the layout.
Corrections made in several parts of the site:
– site header
… – dropdown blocks
– footer
– contact page
– mobile menu
Ensured correct display on all devices (desktop and mobile), adhering to styles: font, color, margins.
Also implemented multilingual support (uk/ru/en) through language files and passing variables to Twig templates.
Technologies used:
OpenCart (ocStore), Twig, CSS, working with controllers and templates.
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79 USD Integration of cryptocurrency payment API and service error diagnostics
PHP
The integration of the cryptocurrency payment service API for generating wallet addresses (BTC, ETH, USDT TRC20 / ERC20) on the website side has been completed.
During the work, the following was implemented:
- configuration of the server request to the API via cURL;
… - transmission of authorization keys through HTTP headers;
- formation and sending of JSON requests;
- processing and logging of API responses;
- diagnosis of errors in interaction with the service.
During testing, errors from the API provider were identified and analyzed (key format, seed, incorrect address generation, 502 Bad Gateway errors).
A detailed analysis of the logs was conducted, and technical information was provided for further diagnosis on the provider's side.
Technologies:
PHP, cURL, JSON API, HTTP headers, logging of server requests.
#API #PHP #Crypto #Integration #Backend
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101 USD Update landing page WordPress (Elementor)
Content Management Systems
Updating the landing page on WordPress (Elementor) according to the technical specifications.
Completed:
- editing content in the top block of the page
… - added a new section after the Benefits block
- updated the feedback form (changed the structure of fields, added a Comment field)
- implemented a universal contact field (phone or Telegram) without format restrictions
- configured SMTP for correct email sending
- checked email delivery through Google Workspace
- made adjustments for the correct functioning of the form and UX
Result: stable operation of the form and correct delivery of applications to email.
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101 USD Layout of Visualforce PDF Invoice (A4, fixed grid)
HTML & CSS
Development and manual refinement of an HTML invoice template for Salesforce Visualforce with PDF generation (renderAs="pdf").
Project features:
• fixed grid 120 / 33 / 33 mm through
… • layout adaptation for correct display in PDF (A4)
• transfer of inline styles to CSS classes
• correct operation of rowspan and fixed columns
• optimization for the Visualforce PDF rendering mechanism
Result: stable display of the invoice in PDF format and correct document generation in Salesforce.
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Layout (design replacement) of the website on Opencart
HTML & CSS
Layout (design replacement) of the website on Opencart
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Layout (design replacement) of the website on Opencart
HTML & CSS
Layout (design replacement) of the website on Opencart
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192 USD Layout (design replacement) of the website on Opencart
HTML & CSS
Adaptive cross-browser layout of the online store pages (catalog, product card, cart, order placement, etc.).
Implementation of layouts provided by the designer in accordance with modern HTML5 and CSS3 standards.
Setting up user interaction with dynamic interface elements using JavaScript and libraries.
Testing and debugging the layout display on different devices and browsers to ensure correct rendering.
… Implementation of responsive design for compatibility with smartphones, tablets, and desktop devices.
#html_and_css_layout #php #website_design #website_support
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221 USD Layout of website pages on Bootstrap 5.3.3
HTML & CSS
Developed a responsive layout for the website that works flawlessly on various devices – from large PC screens to mobile phones and tablets. The main task is to reproduce the design approved in Figma, ensuring an accurate representation of the appearance and interactive behavior of the page, similar to the test site.
Key requirements:
… Responsiveness:
The layout must work correctly for desktop with content width of 1440px (background 1920px) and for mobile device (screen – 460px).
Integration with Bootstrap 5:
Using Bootstrap 5 is mandatory, which allows for faster development and ensures consistency of styles. The overall CSS code for all pages is separated into individual files for convenient integration into the website code.
SEO optimization:
The structure of the HTML code is developed with modern SEO requirements in mind, contributing to better site ranking.
Photo processing:
Hotel photos are uploaded from external services and may have different proportions. To address this task, the central part of the image is displayed through CSS (using properties object-fit: cover; and object-position: center; ratio), which helps maintain design consistency. Additionally, an intuitive solution is proposed for the photo gallery: displaying photos in a modal window as a slideshow, providing convenience for users.
The project demonstrates the use of modern technologies (HTML5, CSS3, JavaScript, Bootstrap 5) to create effective and user-friendly interfaces. The integration of the layout into the website code is done separately, allowing for easy scaling and maintenance of the project.
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Layout of the admin panel for responsive design for PC and mobile version
HTML & CSS
Project: Admin panel layout for web application
- Type of work: Frontend development, layout
- Technologies: HTML5, CSS3
- Responsiveness: Fluid design (Desktop + Mobile)
… Flexible grid: Flexbox
Project description
The admin panel is designed for convenient content management of the web application. The main goal is to create a responsive and user-friendly UI that will be comfortable to work with on both PCs and mobile devices.
Main tasks
- Development of a responsive grid – Flexbox is used for convenient scaling of the interface.
- Layout of components – navigation panel, tables, cards, forms, buttons.
- Optimization for mobile devices – media queries and flexible layout are used to ensure the interface displays correctly on screens from 320px.
Responsiveness
PC (1200px+): full-screen interface, multi-column grid.
Tablets (768px - 1199px): optimized tables and navigation.
Mobile (320px - 767px): burger menu, vertical display of blocks, simplified tables.
- Conclusion
This project demonstrated knowledge of modern approaches in layout and the creation of responsive UI. As a result, a flexible, user-friendly, and fast admin panel was created that works correctly on all devices.
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Setting the appearance of the site on OpenCart
HTML & CSS
Refinement of the website's appearance according to the layout in Figma, including mobile adaptation. Use of bootstrap, restructuring of blocks with resizing of some elements.
#html_and_css_layout #php #CSS3\HTML5 #html5 #css3 #javascript #OpenCart
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Addition of English. Version to the site, translation of content
HTML & CSS
#Wordpress #wordpress #wp #css #html #PHP #polylang #loco_translate #loco #translate #lanquages #language #language #multilingualism
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Adding: product search line, goods, social networks
Web Programming
#Wordpress #search #social #adding #products #PHP #html #css
Reviews and compliments on completed projects 24
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Real expert -
Craft master -
Quick answers -
First-class quality -
Nice communication -
High responsibility -
Great price -
Lightning fast
28 March
16 USD
Add a little text information to the website on OpenCart.
The task was completed very quickly and efficiently. Margarita understood all the important details for us right away. I am glad that I did not make a mistake in my choice.
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7 March
79 USD
Test landing page with payment page
Everything went well.
An excellent specialist who understands technical details and aspects well.
We plan to continue our collaboration.
2 March
101 USD
Update landing page
Margarita is a top-level professional who deeply understands the essence of the task and is also well-versed in many technical details related to the project. The task was completed quickly and with high quality; I highly recommend this performer to everyone.
1 March
101 USD
Visualforce-compatible HTML - personal project for Margarita Svistun
Explanation of evaluations
>>>>>>>>>>>>>>>>>>>>>>>>>
Client:
.....Please finalize the project manually.
Attached is your work in the html file and how the completed project should look.
The priority is how the invoice is displayed in the docx and pdf files.
Your next response from the neural network will be considered a fail.
I need human work and communication with a person.
It is very bad that you didn't even open what you did.
Executor:
....I am sending the updated version of the invoice in the archive.
I manually reworked the layout, focusing on the display specifically in PDF.
Please check the result in Visualforce (renderAs="pdf").
If precise adjustments are needed to match your PDF sample — I will promptly make corrections.
I am available.
23 April 2025
90 USD
Product card specification
This is my second time reaching out to this specialist and once again everything is at the highest level. The work was done quickly, efficiently, and with an understanding of the task. It is pleasant to work with responsible people to whom you want to return. I recommend!
21 April 2025
30 USD
Development of the budget installation component and error correction
Great job. This is not the first time I've reached out, excellent result.
It's a pleasure to work.
17 April 2025
192 USD
Dentistry
Everything is done on time.. all wishes were taken into account.. everything is just great.. I recommend...
5 April 2025
32 USD
Editing the Opencart catalog template
Everything is fine. Margarita is a professional in her field. I will reach out again. Thank you.
3 April 2025
134 USD
OpenCart Programmer 3.0.2.0.
Collaboration with Margarita Svystun left only pleasant impressions. The tasks were completed with quality, on time, and with attention to detail. I especially appreciate the responsibility, proactivity, and professional approach.
I recommend her as a reliable specialist, with whom it is a pleasure to work. I will definitely reach out again!
9 March 2025
70 USD
Layout of 2 pages of the website on Bootstrap 5 - search engine
I am very satisfied with the work. Margarita works quickly and efficiently. A professional specialist. Easy to contact and resolve issues. I recommend!
1 March 2025
121 USD
Layout of 2 pages of the website on Bootstrap 5
Very good specialist, completed the work efficiently and quickly. Pleasant to work with.
25 February 2025
30 USD
Redesign the admin panel for a responsive design for PC and mobile version
Everything is super, fast, high quality! I recommend the performer!
21 February 2025
115 USD
Setting up the appearance of Opencart
Sorry for the delay in approving the task, I was on a business trip.
Overall, everything is great!
21 January 2025
5 USD
Layout designer - editing text on the main page.
Very pleasant collaboration. Professionally, quickly, I will reach out again.
7 January 2025
135 USD
Creation of informational pages for Opencart 3
Everything is fine, thank you for your cooperation!
26 November 2024
216 USD
Layout (redesign) of the website on Opencart
Quickly, qualitatively, professionally. Very satisfied with the collaboration. I will reach out again. And I recommend others to do the same 🙂
30 August 2024
20 USD
OpenCart. 5 tasks on layout design
Quality work, I recommend!
2 May 2024
23 USD
Website on opencart, need to adjust the footer according to the layout
Worked with Margarita for the first time. She completed everything on time and very qualitatively. Very grateful to her.
15 July 2022
16 USD
Довести до зеленой зоны https://www.connector.in.ua/
A beautiful, intelligent and sympathetic artist. I recommend !
13 June 2022
126 USD
OpenCart Internet shop hardware
Margarita, a real specialist, without any additional questions, has completed the task, in time and what it is important is quality, it is hard to find a developer who does everything in time and quality! Margarita is one of them who knows her work and performs her at the URA! I’m happy and will be happy for others who will work with Margarita.
1 June 2022
32 USD
Further development of the web site ' s mobile version on the OKAYCMS engine
Rarely a smart and correct girl. It was pleasant to collaborate.
23 May 2022
14 USD
Верстка и тестинг 1 подписи для почты в HTML
Thank you for the quality work.
There was a lot of questions and requests on the course of the work - Margarita answered everything and fulfilled everything.
18 May 2022
5 USD
Changing Contacts on Opencard
Great... clear. thank you.
13 May 2022
14 USD
Translate html to html for Mail
It was a great pleasure to work with this artist. The task was performed in good quality and in the right time. I strongly recommend cooperation.
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