Backend Java development.
Payment services development
Integration with different payment gateways and system (include Apple pay)

Databriz is a small start-up company founded by close team of professionals. The main company mission is creation BIG DATA solutions based on proven open source projects.
My main responsibility is development data storage and search systems for our company’s web-projects. Also I’ve been creating REST services for company’s mobile and web project
Used technologies:
• Postgresql as RDBMS data storage
• Solr and Elasticsearch as an indexation system for Postgresql data
• OrientDB as a graph database for storing linked entities.
• Java as a tool for development pipeline between Postgresql and Solr / Elasticsearch
• Java as a tool for development REST services for company’s projects
• Swagger as a documentation tool for REST services
BIG DATA solutions based on such technologies as:
• Cloudera as main framework for Big Data solutions included:
• Hadoop as distributed file system
• Spark jobs for loading external data to developed solution
Latest projects:
1. Information portal https://tassbiz.ru/
Project uses Cloudera framework as base for data storage (Hadoop) and data indexation (Solr).
Some parts of the project with more complicated structure use ElasticSearch as a search engine.
2. Central bank internal project.
Project uses Cloudera framework as base for data storage (Hadoop) and Apache Spark for load external data to system.
3. Backend REST API for web portal https://plusprom.ru/index
Project implemented in Java (Spring Boot) using Postgresql as data storage and ElasticSearch as a search engine. Authentication system based on JWT tokens.

• Development of universal data loader for BI system.
• Design simple user interface for ETL procedure for non-technical users.
• Participation in different projects using Data analyze.
• Development different Java-modules which help to extract data from not well structured data sources and prepare this data to load in BI system.