Alex Cherniatev Email & Phone Number

Moscow, Russia

Backend development of payment gate system for project in gambling industry.Disigned, implemented and contributed to several parts of system, including:- Cascade payments to carry out payment transactions through different operators.- Specific components of internal antifraud system like blacklists and whitelists for credit cards.- Notifications to inform users about in-app events.Implemented several third-party payment system integrations.Done lots of refactoring and code review.Technologies:Java 17Spring Boot, Spring Data, Spring CloudPostgreSQLAWS: ECS, RDS, S3, SNS, SQS, Athena, CloudWatch---Backend development of security part for neobanking system.- Implemented user registration flows.- Built several custom authentication/authorization flows.- Contributed to development of audit system for registering and searching for events.Technologies:Java 11-17Spring Boot, Spring Security, Spring DataPostgreSQLRedisKafkaDocker, Kubernetes

Minsk, Belarus

Backend development of business intelligence platform for marketing data analysis in mobile game industry.- Built a number of ETL jobs for data pipelines in Java and Python.- Developed web services for working with marketing metrics to make them available for analytics in form of charts and tables.- Built web services and a number of background processes in order to automate user acquisition management. Optimized traffic buying by implementing automatic bidding at ad networks.- Contributed to significant parts of project like reports generation, application management, marketing coefficients calculation and so on.Technologies:Java 8, PythonSpring Boot, Spring DataPostgreSQLDocker, KubernetesApache AirflowGoogle Cloud Platform: Compute Engine, Kubernetes Engine, BigQuery, Storage, SQL, Composer

Krasnoyarsk, Krasnoyarsk Krai, Russia

Backend development for enterprise electronic document management system.- Integrated the project with accounting systems starting with schema definition and ending up with complete web services implementation.- Built plenty of services for processing electronic documents on different lifecycle stages.- Co-authored integration with electronic archives and document delivery systems.- Took responsibility for document workflow maintenance in IBM Process Engine.Technologies:Java 7EJB 3IBM FileNet P8 PlatformSOAP, JMS (WebSphere MQ)IBM WebSphere

Krasnoyarsk, Krasnoyarsk Krai, Russia

Backend development for music-oriented social network.- Implemented audio metadata indexing in order to find music tracks by keywords in different audio sources such as SoundCloud, YouTube and Spotify. Analyzed and found over 15 million tracks from Rovi Music database which made it possible to provide the user with binary content at an early stage of the project development.- Integrated with SoundCloud to provide mobile clients with user library synchronization.- Built a number of utilities and background processes to keep data up to date and maintain consistency.- Developed plenty of microservices.Technologies:Java 8Google GuiceJersey, JacksonPostgreSQLDockerAWS: EC2, S3, DynamoDB, RDS, SQS, SWF

Krasnoyarsk, Krasnoyarsk Krai, Russia

Corporate portal development for the largest energy company.- Contributed to significant content management parts of the portal.- Integrated with the public procurement system. Built a number of synchronization background processes.- Migrated data from legacy systems.Technologies:Java 7Spring FrameworkJSP/ServletsOracle WebCenter Sites