Created a web application for processing shoe sales orders. (Stack: Java, MySQL, HTML, CSS JQuerry, Spring (Data, Security, JPA, WEB, Boot), Hibernate)

Optimized the MySQL database (creating indexes and triggers, optimizing queries)

Created a recommendation function for a shoe sales system to create personalized recommendations based on user browsing history and order history.

Created a computer vision system for recognizing people at pedestrian crossings (python, cv2)

Created a web application for processing book sales orders (scala, akka)

Created a web application for processing clinic patients based on microservice architecture with database deployment in a container (Java, MySQL, HTML, CSS JQuerry, Spring (Data, Security, JPA, WEB, Boot), Docker, pattern orchestrator, react, js)

Created deep learning systems for analyzing data about company employees, in order to determine employee maturity (Python, pandas, ANOVA, numpy, seaborn, matplotlib.scipy, glob)

Conducted research on clustering methods for implementing a recommendation function using the collaborative filtering method in a movie viewing system (Python, pandas, sklearn (DBSCAN, silhouette_score, calinski_harabasz_score, KMeans, davies_bouldin_score, OPTICS, ST_DBSCAN), seaborn, gensim)

Created an application for reading various record formats from disk via Kafka, parsing and writing to the database (Python, Scala, Java, Spark, Kafka, Spark Streaming, MySQL)

Responsibilities as a developer:

Created and modified of Databricks notebook;

Created and modified of pipeline for Azure Data Factory;

Created an uber JAR to run a job on Databricks;

Used Apache Spark to implement distributed processing of unstructured and semistructured data (using Java and Scala);?

Refactoring code.

Responsibilities as a developer:

Used Apache Spark to implement distributed processing of unstructured and semistructured data (using Scala);?

Created Scala application for investigate Scala possibilities.

Responsibilities as a developer:

Implemented the eventing framework(Kafka clients) using Java technology stack;

Integrated Confluent Schema Registry into Spring Boot Aplication to work with schemas;

Implemented handlers for failed messages;

Worked with Confluent Control Center;

Created Get Started Guide for Teams;

Set up Kafka locally;

Deployed AWS DynamoDB in Docker;

Ran test scenario in Docker container with result output;

Code review.

Responsibilities as a developer:

Ran Java Spark application on Hadoop Hortonworks sandbox;

Saved and loaded data from HDFS as JSON, AVRO, CSV and Parquet file;

Saved and loaded data from Hive;

Implemented Spark Streaming application with watermarking function;

Implemented the eventing framework(Kafka clients) using Java technology stack;

Used Apache Spark to implemented distributed processing of unstructured and semi-structured data ;

Ran Java Spark application on Amazon EMR and save result at S3 bucket.

Responsibilities as a developer:

Created Java web-application with servlets;

Created async query with using jQuery;

Implemented custom captcha ;

Saved data with MySQL Server;

Implemented transaction manager;

Implemented localization with properties files;

Implemented user interface with jsp.