Vladislav Merkulov Email & Phone Number

- Enabled support for external transport digital queues, allowing tenants to manage booking time slots through their external APIs.- Designed and developed a subscription plan upgrade feature to automate tenant transitions to new plans.- Added combined execution request workflow actions for more effective mass management of execution request groups.- Applied restriction states to the transport resource model to enhance control over the transport route workflow.- Integrated RabbitMQ event bus and billing webhooks into the internal Billing Service and Payment Gateway to provide details for issuing payment documents.- Developed bulk import and export features for partnership invitations and contract data in Excel format, improving collaboration efficiency between cargo owners and carriers.

- Designed and developed a B2B online and offline loan reinstatement functionality that improved loan processing reliability, reinstated canceled loans and reduced incident response times.- Architected and developed a Referral Program microservice to increase the number of new clients and loans while establishing reliable microservice communication patterns based on Kafka and REST API.- Developed a multi-page client summary spreadsheet generator that utilizes collected clients' personal information and associated blacklist checks to enhance management reports for compliance with anti-money laundering laws.- Upgraded SMS and email delivery services to utilize Kafka as a broker, enhancing connection stability and consumer behavior, ensuring a uniform approach in communication across services.- Enhanced loan applications processing to satisfy new integration requirements of B2B partners.- Increased loan applications request processing speed by utilizing Redis pipelining and minimization of database calls, leading to a decrease in refusal rates and accelerated processing time.- Implemented DataDog metrics for loan requests and applications, analyzed Sentry and Kibana logs and incident reports to identify and resolve critical bugs, increasing system stability and reliability.- Maintained ADRs, improved Docker development configurations, updated readme documentation to streamline new developer onboarding, resulting in optimizing development processes, enhanced transparency in communication, reduced onboarding time, and stronger team collaboration.

- Integrated local payment methods like PIX and Boleto, added CPF/CNP codes and updated a checkout form adapting the eCommerce platform to the Brazilian market- Added calculating shipping cost method depending on the geography of delivery and order weight resulting in tailored pricing for various regions and more efficient allocation of logistics resources- Added Storefront API integration, which included syncing merchants, products and categories though API, added API gem that simplifies syncing with the eCommerce B2B platform, allowing to authenticate stores and manage products- Developed a feature enabling merchants to upload simplified price lists and product stocks in Excel/CSV format, facilitating quick initial store data population and efficient updates, streamlining inventory management for merchants- Implemented a range of other features including added delivery time ranges, category-based commissions, states and countries settings, promotional codes and onboarding blocks for merchants which resulted in more versatile and user-friendly B2B platform and increased merchant retention

- Enhanced the process of transcoding and storage of video content for supporting multiple types of video converters, added support for an external video file type, which enabling the use of modern transcoder and facilitating incremental migration to a new transcoding and content storage scheme- Implemented the dispatching events related to fundamental video information changes via the AMQP to external services, enabling incremental transition of monolithic components to separate services- Integrated FullHD video content quality type support, aligning with the expectations of various partner platforms concerning video quality requirements and contributing to increased viewer satisfaction- Migrated the process for applying scheduled content permissions settings from cron to Delayed Job, increasing the reliability and efficiency of task execution- Implemented the capability to apply prohibited embed settings at both track and project levels, providing more granular control over embeds and enhancing the customization options for content sharing- Developed an API for Xiaomi Smart TVs and other API components, expanding platform reach and increasing the user base- Refined the TV program parsing mechanism, ensuring better content matching, up-to-date and accurate scheduling information for viewers- Created reports based on user data, paid subscriptions, and traffic, providing valuable insights for informed decision-making and contributing to platform growth- Optimized API methods, SQL queries, and caching strategies, while removing or processing legacy components, leading to significant performance improvements and a more streamlined codebase- Took on the Team Lead role for a group of backend developers, conducting code reviews, offering mentorship, and making key decisions in collaboration with PM, task authors and the architecture department. This added responsibility fostered enhanced team coordination, knowledge sharing, and overall project success

Implemented and enhanced various features, rectified bugs, and addressed performance and operational issues for mature Ruby projects, including:- Refined the nonprofit organizations catalog filter, devised a feature to search for volunteer organizations via categories and on a map and making volunteers requests for nonprofit organizations aggregator platform which provided new ways for volunteers and those in need to connect.- Upgraded search filters, integrated new product types and refined checkout, delivery and promo code logic in an eCommerce project enriching the shopping experience and boosting product sales. - Introduced new publishing formats and enhanced the discovery component in a social marketing automation platform, resulting in to more effective social media marketing campaigns.

Developed a comprehensive VOD and Live Streaming video portal specifically designed for medical professionals. The system incorporated support for RTMP and HLS broadcast formats, adaptive bitrate and online chat features. It significantly improved user engagement, enhanced content accessibility, and fostered collaboration among medical professionals.Contributed to the improvement of features such as video recording, screenshot capturing, geolocation tracking, annotations, VoIP calls, mobile integration and APIs on a live virtual collaboration platform for the insurance sector. These enhancements significantly boosted platform efficiency and improved communication between insurance agents and clients.