Alexandr Efimov

Design architecture and implement Customers portal. Environment/tools: Docker, Java 11, Spring, Hibernate, ElasticSearch, Postgres, Liquibase Keycloak, Junit, Mockito, Testcontainers, IntelliJ IDEA, Git, Maven, JIRA

I have refactored legacy project (Publishing Software) to prepare it for the next product generation. The code was cleaned in accordance with the best development practices (Clean code, SOLID, etc.), legacy parts were rewritten with modern frameworks. The project become ready for separation into a microservice architecture. Environment/tools: Java SE 1.8, Spring Boot, Junit, Mockito, REST API, IntelliJ IDEA, Git, Maven, JIRA

• Fixed bug and developed new functionality in legacy system written with Java and OSGI • Merged 2 legacy products into new one with deep refactoring and migrating to Spring Boot Environment/tools: Java SE 1.8, OSGI, Spring Boot, Junit, REST API, Eclipse, IntelliJ IDEA, Git, Maven, JIRA

The company brings automation for financial operations to Sberbank. I’m developing new functional subsystem of system called «Cash Center» which automates all cash operations in bank. The subsystem extends functionality adding automation for cash collection operations. I have responsibilities to develop server-side part with Java including business-logic, data access layer, integration with main system, logging important actions. New functionality is covered with unit tests.

I was a part of team to develop the smart home system called “Inwion”. My responsibilities was - develop scenarios for plug computer using CamundaBPM - provide REST API both on plug computer and server application to communicate between them - implement business logic both on plug computer and server application with Java - develop frontend to manage scenarios on plug computer using AngularJS - develop web portal using Vaadin framework

Participation in projects of territorial centralization of banks on a single banking platform (IBSO): optimization, unification parts of the system. Development new functionality and fixing bugs using PL/Plus (extends PL/SQL). Writing and optimizing complex SQL queries (multiple joins, subqueries, grouping, transactions) on tables with 1,000,000+ rows.

I’ve wrote many PL/SQL stored procedures and functions to manage all the data and to process card transactions in bank system with the higher speed, optimized SQL queries, implemented reports. Among the biggest challenges I can highlight is the integration with OpenWay card processing system and the money transfer system "Golden Crown". Environment/tools: Oracle DB Server, SQL, PL/SQL, VB6.0, Oracle Reports, Rational Clear Quest, VCS

Support banks system "Client-Bank", "Internet-client", the retail banking system "RBS". I developed application: • automation of reception of state duty for registration actions with motor transport. • aggregating data from banking system to send reports about arrears to collection agency. Environment/tools: Oracle DB, PostgreSQL, SQL, PL/SQL, Delphi, Object Pascal, Solaris (Sun OS).

Integration and support of a software, PC and LAN maintenance. Software development: "Electronic Document Management System" for the Pension Fund of the Kemerovo region using C++. It was my graduate work. Environment/tools: C++, MFC, CryptoPro