The largest DIY online store in Russia - over 1,000,000 products at good prices. Everything for home, country house, construction and repair. Highly loaded IT project with over 2 million users, ERP-system of data exchange with over 1.5 TB per day.

B2B-Center is a leading Russian e-marketplace for carrying out business-to-business purchases and sales. Top 30 Internet companies by Forbes Russia, 2023.– Developed a critical feature - e-digital signature, which led to over 755K registered certificates and 11M signed documents.– Provided integration with the SOAP API and ensured its uninterrupted operation in compliance with the country's legislation. – Developed a RESTful API for the interaction of 100+ companies with our service. The OpenAPI (Swagger) Specification was used in the development.– Created an Additional E-signature functionality following the country's legislation, which helped the company to earn €1M.As a Senior PHP Developer and Team Lead, I am currently working on a large project where I am responsible for the development and maintenance of both internal and external APIs. I am working with both REST and SOAP protocols, and am involved in the implementation and support of digital signature functionality on the project. In addition to hands-on development, I also manage a team of developers, handle hiring and training, and conduct code reviews and pair programming sessions to ensure the quality of the codebase.

I was promoted to team leader and had the opportunity to take on additional responsibilities. I was heavily involved in new code development, working on projects from conception to deployment. I also played a key role in optimizing existing projects, conducting code reviews, and overseeing the work of the other developers on the team. In addition to these technical responsibilities, I was also responsible for hiring and training new employees, and for helping to define the overall project architecture. I also worked to optimize the performance of our websites, including the page load speed and the integration with external services. Overall, it was a challenging and rewarding role that allowed me to grow and develop my skills as a leader and developer.

In my second job as a web developer, I had the opportunity to work on a wide range of projects, including small websites and large online stores. One of my main responsibilities was to develop and maintain websites using PHP, as well as utilize content management systems (CMS) to make it easier for clients to update and manage their own sites. I also worked closely with customers to understand their needs and goals, and helped to design and build websites that met their specific requirements. One of the most rewarding aspects of this job was seeing the positive impact that my work had on my clients' businesses, whether it was through the creation of a simple informational website or the development of a complex online store.

My first job as a PHP website developer was an exciting and challenging experience. I was responsible for building and maintaining websites for clients using PHP, MySQL, CSS, and other technologies. One of my main tasks was to create the back-end functionality of the website using PHP, while also integrating a MySQL database to store and retrieve data. I also used CSS to design the layout and appearance of the website, including creating custom templates and working with pre-existing templates. In addition to these technical responsibilities, I also assisted with search engine optimization (SEO) efforts to help improve the visibility of the website in search results. Overall, it was a fantastic opportunity to learn and grow as a developer.*** Keywords *** Debugging, PHP, Web Services, Continuous Delivery (CD), Scrum, Software Analysis, Representational State Transfer (REST), Software Development, Design Patterns, Microservices, Service-Oriented Architecture (SOA), Software Architecture, Software Design, Leadership, System Testing, Product Requirements, Cloud Security, PHP Applications, Redis, Internet Security, HTML, Data Architecture, Databases, Web Application Development, Object-Oriented Programming (OOP), Vulnerability Assessment, Docker, Database Design