Freelancer Serhii Soloviov (online Stores & E-commerce, payment Systems Integration) ≡ shop-engineer

Freelancers

Information Portfolio 18 Reviews 24 Activity

Serhii Soloviov
Kharkiv, Ukraine
24 0
Available for hire

Projects 24
Rating 5.0
Rating 2 568

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Last project: 1 month back
Collaboration with clients: 12
Projects involving arbitration: 1
Last visit: 8 hours 24 minutes ago

Fixing even the things that others couldn’t. OpenCart / WooCommerce / Horoshop

I work with complex technical tasks in eCommerce. I optimize speed, configure integrations, fix errors, restore Checkout flows, and develop custom modules.
I work cleanly, predictably, and without unnecessary complications.

🔧 What I do

Website speed optimization (PageSpeed, LCP, TBT)
Checkout and payment integration (WooCommerce / Autopay / InPost)
Custom module development for OpenCart
API, payment systems, and delivery integrations
Fixing issues after previous developers
Analytics setup (GA4, GTM, eCommerce events)
Technical support and optimization of online stores

📌 Examples of work

1) Horoshop speed optimization (PageSpeed Mobile 95)
https://freelancehunt.com/showcase/work/priskorennya-roboti-saytu-na-horoshop-pagespeed/2000106.html

2) WooCommerce: Checkout + InPost + Autopay
https://freelancehunt.com/showcase/work/nalashtuvannya-koshika-woocommerce-integratsiya-inpost/2000111.html

3) OpenCart 3: Price & Stock Update Module
https://freelancehunt.com/showcase/work/rozrobka-modulya-onovlennya-tsin-ta-zalishkiv/2000112.html

⭐ Why work with me

I explain even complex technical things clearly
Predictable results without chaos
Calm, reliable communication
If I take the task — I finish it
Respect for your time and deadlines

Tell me your task briefly — I’ll propose the best technical solution.

Services

Online Stores & E-commerce 9 USD for hour
Payment Systems Integration 11 USD for hour
Enterprise Resource Planning (ERP) 13 USD for hour
Website Development 8 USD for hour
Website Maintenance 7 USD for hour

Programming

Content Management Systems 8 USD for hour
Databases & SQL 8 USD for hour
HTML & CSS 4 USD for hour
Javascript and Typescript 6 USD for hour
PHP 9 USD for hour
Web Programming 11 USD for hour

0 74

Adding a printed form to the "Debtors" report in 1C 8.3

Enterprise Resource Planning (ERP)

Locally finalized the report "Debtors" in the configuration 1C 8.3: added a print button without changing the current logic of the report. Implemented the generation of a printed form based on the current selection of the report, with the output of…

0 92

PrestaShop — refinement of the product card + UX

HTML & CSS

Task Improve the product card: make it clearer for the user, reduce the number of refusals, correctly add additional information without overloading the page. What has been done Refinement of the product.tpl template (Smarty) Rebuilt the…

0 125

Development of a price and stock update module for OpenCart 3

Web Programming

The client needed a commercial module for automatic price and stock updates on OpenCart 3.0. The task involved working with large data arrays, validating files, implementing security measures, and ensuring stable execution of updates in CRON mode. I…

0 187

WooCommerce cart setup + InPost and Autopay integration

Payment Systems Integration

The client reached out with a problem regarding the incorrect functioning of the cart and unstable integration of delivery and online payment modules. Some orders were not going through, and purchase notifications were not reaching either the clients…

0 180

Acceleration of the website on Khoroshop (PageSpeed Mobile 95)

Online Stores & E-commerce

The client contacted with a problem of slow page loading on mobile devices. After a technical audit, I discovered blocking scripts, heavy styles, and incorrect template elements. I optimized the loading order of resources, configured Lazy Load,…

0 110

Increasing the conversion of the product page

Marketing Research

Task: Improvement of the product card to increase clicks on the CTA and transitions to order placement. ====================== A marketing research study was conducted on user behavior on the product page for a mirror store with LED backlighting…

0 62

Оптимізація структури й швидкості e-commerce магазину

Marketing Research

Замовлення зробити аудит та оптимізація магазина, що продає LED-зеркала: покращення швидкості, структури й мобільної версії для підвищення конверсії. ========================== Проведено дослідження e-commerce магазину, який спеціалізується на…

0 48

Оптимізація воронки продажів (CRO + підвищення конверсії)

Marketing Research

Зроблен аналіз чекауту та покращення його структури для підвищення кількості завершених замовлень. Проведено маркетингове дослідження поведінки користувачів у процесі оформлення замовлення. Виявлено фрикційні елементи, що знижували конверсію, —…

PriceTool v3 — автосинхронізація цін і залишків (JSON/XLSX)

90 USD

0 48

PriceTool v3 — автосинхронізація цін і залишків (JSON/XLSX)

PHP

Розробив професійний модуль для OpenCart, який автоматично оновлює ціни та залишки з JSON або XLSX прайсів постачальників. Підтримує CRON, гнучкі налаштування, логування, звіти та інтелектуальний режим оновлення. Повністю адаптовано під магазини з…

36 USD

0 69

Feedback widget for Horoshop

Javascript and Typescript

Developed a custom feedback widget for the Horoshop platform — a stylish floating button with an animated quick action panel. What was done: - created a compact floating button in brand style (SVG icon, animation); - implemented a quick contact panel…

Customize the Framer template

Personal 54 USD

I am sincerely grateful for such involvement in the project, prompt communication, and a professional approach without unnecessary questions. There is always a very constructive dialogue and friendly communication with Serhiy. Quality execution of the task. I want to highlight separately - this is a professional approach. Not a freelance level, but a level of business partnership. Thank you.

Project	Budget	Proposal	Deadline	Added
Looking for an OpenCart specialist	Not specified	16 USD	1 day	18 May
UX improvements: product card, cart, checkout (refinement of the online store). Open cart	386 USD	112 USD	5 days	8 May
Customize the Framer template	54 USD	54 USD	7 days	8 May
Web interface of TSD for 1C UT 2.3 (order assembly + product verification)	Not specified	607 USD	29 days	6 May
Make edits to the Framer template	56 USD	56 USD	7 days	28 Apr
Website on OpenCart.	225 USD	225 USD	7 days	24 Apr
Display of the menu in a specific category	16 USD	16 USD	1 day	24 Apr
Set up a Shopify store	28 USD	28 USD	1 day	24 Apr
Fix the website on WordPress	34 USD	18 USD	1 day	24 Apr
Connect keyCRM to the store on OpenCart	16 USD	90 USD	2 days	24 Apr

Profile

Indicators

Specializations

Online Stores & E-commerce

Payment Systems Integration

CV

Fixing even the things that others couldn’t. OpenCart / WooCommerce / Horoshop

🔧 What I do

📌 Examples of work

⭐ Why work with me

Tell me your task briefly — I’ll propose the best technical solution.

Tags

Skills and abilities

Services

Programming

Portfolio Works

Client reviews

Customize the Framer template

5.0

Serhii Soloviov

Make edits to the Framer template

5.0

Serhii Soloviov

Make edits to the Framer template

5.0

Serhii Soloviov

1C refinement

5.0

Serhii Soloviov

Staging deployment

5.0

Serhii Soloviov

Setting up product export

5.0

Serhii Soloviov

Finalize the WordPress site

5.0

Serhii Soloviov

Search and fix error 404 on the OpenCart engine

4.0

Serhii Soloviov

Designing the structure of the lighting catalog (OpenCart)

5.0

Serhii Soloviov

Refinement on MODx (slider + numbers)

5.0

Serhii Soloviov

Technical analysis of the module

5.0

Serhii Soloviov

Improvement of the website cart

5.0

Serhii Soloviov

Audit of the current WP/Woo and plugins

5.0

Serhii Soloviov

Implementation of OAuth authorization for InPost with automatic retrieval of customer data in checkout.

5.0

Serhii Soloviov

Website speed audit on Shopify

5.0

Serhii Soloviov

Customization of the site on the Khoroshop platform

5.0

Serhii Soloviov

Setting up WordPress + WooCommerce cart, InPost module, and Autopay online payment

5.0

Serhii Soloviov

Acceleration of the website on Khoroshop

5.0

Serhii Soloviov

Customization of the block design with a file on the Khoroshop website

5.0

Serhii Soloviov

Development of a feedback widget for the goodshop website

5.0

Serhii Soloviov

Indicators

Total projects:

24