* Ensured the integration of pricing algorithms with the existing platform, enabling real-time analysis of market data, user behavior, and historical performance.* Developed and implemented ensemble learning techniques to predict future trends in user behavior and ad performance.* Created and implemented a comprehensive analytics dashboard to display key performance indicators in real time.

* Created a platform enabling load testing of telematics systems under near-realistic conditions, significantly enhancing the system's reliability and performance.* Designed and implemented a robust system for monitoring vehicle geofence crossings, ensuring precise tracking and real-time notifications.* Developed a scalable and efficient system for storing vehicle geospatial and system data, improving data integrity and retrieval speed.* Developed a comprehensive system storage and analysis of vehicle traffic data, which helps to conduct a detailed analysis of performance and usage.Technologies Used: Kotlin, ClickHouse, Kafka Streams, Spring, MySQL, Reactor, R2DBC

Tasks:* Created a project to protect user personal data through obfuscation, enhancing data security.* Developed and implemented load scripts to test the performance of microservices, improving their scalability and resilience.* Maintained and enhanced the CI/CD pipeline in Jenkins, increasing the efficiency of build and deployment processes.* Developed functionality for personal accounts for B2B and B2C clients, improving user experience and system interaction.* Conducted a comprehensive analysis of technical solutions for authorization and authentication, selecting the optimal options for implementation.* Developed and implemented a platform for authorization and authentication, ensuring secure access to services.Technologies:java 11, kotlin, Spring Boot, kubernetes, monogDB, postgreSQL, kafka, jenkins

* Designed and developed Spark jobs on AWS EMR to efficiently process and analyze vast amounts of data, improving processing times and accuracy.* Developed and optimized ETL pipelines, ensuring seamless data extraction, transformation, and loading, which improved data accessibility and quality.* Developed a scalable Data Lake on AWS, providing a centralized repository for structured and unstructured data.* Implemented workflow automation using Apache Airflow, streamlining data processing and reducing manual intervention.* Crafted complex SQL queries for AWS Athena, enabling efficient data querying and analysis directly from S3.* Configured Jenkins pipelines, prepared automated backup solutions, and developed deployment scripts to ensure system reliability and quick recovery. Skills: scala/java, python, Amazon Web Services (Athena, EMR, EC2, S3)Tools: Zeppelin, Airflow, Jenkins

* Design and development of web service for visualization of statistical data. * Support and improvement of the service for user scoring Skills: java, groovy, Spring, jQuery, React js, Docker, AWS*

* Integrated the store with the company's production system, improving inventory and order management processes.* Developed RESTful API for interacting with external systems, ensuring reliable and secure data transfer.Implemented and configured a content management system, allowing easy updates and management of site content without code changes.* Developed and implemented automated tests, improving code quality and reducing the number of bugs during the development stage.Tools: Java, Spring, OSGI, Camel, Vue, jQuery