Roman Litvinenko is a backend developer with 12 years of experience in commercial development, specializing in complex web systems, APIs, business process automation, and integrations with external services. He works with frameworks such as Laravel, CodeIgniter, Yii2, and Symfony, as well as CMS platforms like OpenCart, WordPress, and 1C-Bitrix. He is involved in the development and enhancement of modules, themes, and plugins.

Roman has experience with MySQL, database design, and query optimization, as well as infrastructure based on Linux, Nginx, Docker, and CI/CD using GitHub Actions. He is skilled in effectively integrating systems with 1C, CRM, payment platforms, Telegram bots, and industrial equipment.

His strong point is the ability to quickly understand others' code and complex architectures, restoring and optimizing projects that previously struggled to achieve stable operation. He works through the full cycle—from idea to server support—adhering to deadlines, always available for communication, and providing guarantees. Roman is ready for challenging tasks and long-term collaboration.

Reviews

Roman Litvinenko is generally a professional performer who quickly and efficiently completes web development tasks (OpenCart, Bitrix, WordPress), often exceeding expectations: the work is done promptly, adhering to the technical specifications, along with additional recommendations and consultations. Many clients praise his competence, politeness, availability, and willingness to collaborate again.

However, there are negative reviews indicating serious issues:
- Several clients (including LLC "ZSK," Vasily Teplov, and Stanislav Kuksenok) report **failure to complete work after prepayment**, **disappearance of the contractor**, **refusal to communicate**, and **fraudulent behavior**.
- One review points out **incomplete fulfillment of the technical specifications**: design elements were missed, errors on mobile devices were not corrected, and the contractor demanded additional payment for unfinished work.
- There are also mentions of **unfriendly attitudes towards clients**, including accusations of "deception" despite having clear technical specifications.

**Conclusion:** Despite numerous positive reviews, there are **confirmed cases of unscrupulous behavior**, including **disappearance after prepayment** and **incomplete work**. It is recommended to conduct transactions only through secure methods (for example, using a payment guarantee system).

Portfolio projects

Skills and Technologies: PHP, JavaScript, WordPress, Laravel, Docker, jQuery, testing (Pest), API integration.

Projects and Achievements: The candidate has developed several web applications and modules, including a shortcode for displaying the current euro exchange rate from the Central Bank of Russia's website, a bank deposit yield calculator, and a notification system on Laravel supporting multiple channels. Additionally, he implemented a custom fields filter for WordPress and a review carousel module for OpenCart, enhancing website functionality and improving user experience.

Achievements and Recognition: All projects are available on GitHub, showcasing the candidate's active participation in development and commitment to skill improvement.

* It is created by a neural network based on a portfolio, information provided by the user about himself and reviews from other users.

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