Anton Kharus, Senior Back-end Developer in Saint Petersburg, Russia
Anton Kharus

Senior Back-end Developer in Saint Petersburg, Russia

Member since February 25, 2019
Anton is a database architect, developer, and Oracle DBA with over 15 years of experience in various ERP projects, Hadoop ecosystems, DevOps, Computer Vision, and a plethora of IT projects, such as hardware\software integration, logistics, enterprise service bus processing, and telecom data processing. His expertise has helped national clients, such as the largest airport and telecommunications companies in the country, dramatically improve their IT performance and see outstanding results.
Anton is now available for hire

Portfolio

  • TaskData
    PostgreSQL, AWS DMS, Bash Script, SQL, Amazon Web Services (AWS)...
  • Reksoft
    Pentaho, MySQL, Python, Java, SQL, PL/pgSQL, PostgreSQL
  • Tander
    Oracle PL/SQL

Experience

Location

Saint Petersburg, Russia

Availability

Part-time

Preferred Environment

Business Intelligence (BI), Oracle PL/SQL, SAP HANA, Docker, Java, Python, PL/pgSQL, SQL, Linux, Windows

The most amazing...

...project I've designed and developed is the largest Russian personal documents database serving 137 million people.

Employment

  • Database Engineer

    2020 - PRESENT
    TaskData
    • Acted as a database engineer. Involved in database migration project, migrating a large-scale business critical platform from MSSQL DB to PostgreSQL DB using AWS tools and services.
    • Rewrote and optimized SQL queries and stored procedures written in MSSQL dialect to the PostgreSQL one.
    • Involved in the development of various monitoring data consistency analysis tools used during the data migration process, using Bash and PL\pgSQL.
    Technologies: PostgreSQL, AWS DMS, Bash Script, SQL, Amazon Web Services (AWS), Business Intelligence (BI), PL/pgSQL
  • Senior Software Developer

    2013 - 2020
    Reksoft
    • Designed the database and participated in Java development of the largest cross-customer ESB tool used country-wide, running on Oracle database. I was the java developer involved in business logic development, ETL, and reporting.
    • Developed an image classification solution with Python, NumPy, Indico, Google Cloud Database, and an AWS Mechanical Turk solution for a USA startup.
    • Designed and implemented a database for an airport baggage handling system for one of the largest airports in Russia serving millions of baggage units annually, including backup, recovery, reporting, and replication.
    • Built various map-reduce tasks in the Hadoop ecosystem for the largest Russian telecommunications operator.
    • Participated in the fast prototyping of new clients solutions using DevOps and Cloud tools.
    Technologies: Pentaho, MySQL, Python, Java, SQL, PL/pgSQL, PostgreSQL
  • Senior Database Developer

    2012 - 2013
    Tander
    • Acted as the database developer for various in-database data processing pipelines inside the customer landscape.
    • Worked as an Oracle database performance tuning expert, developed, refactored, and documented data processing pipelines, stocks, ETL, reporting, and payment processing modules.
    • Prepared data sets for a custom Python software solution UI tool.
    Technologies: Oracle PL/SQL
  • Support Engineer

    2011 - 2012
    SAP CIS
    • Acted as a support engineer for the business intelligence team. Involved in on-site and remote performance tuning SAP solutions for European clients.
    • Analyzed root cause performance issues in the client's SAP landscape, for the business intelligence portion, including but not limited to BEx Analyzer, SAP HANA, and standard database installations (Oracle, DB2, and MaxDB).
    • Assisted customer personnel to run SAP software solutions effectively as the second line support.
    Technologies: Microsoft SQL Server, IBM Db2, Sybase, Oracle, JVM, SAP, SAP NetWeaver
  • Database Developer

    2009 - 2011
    Reksoft
    • Developed various CMS, ERP, and ESB solutions for customers as a database developer. Designed and implemented databases in new and legacy products. Worked as database business logic programmer.
    • Developed Adobe Flex (ActionScript) for the front end portion of the customer's software. Designed ETL and reporting solutions for these projects.
    • Administered various Oracle/MS SQL/Sybase installations in a test environment and in production. Worked on various ETL, reporting, and performance tuning tasks.
    Technologies: Sybase, Microsoft SQL Server, Java, Oracle PL/SQL
  • Database Developer

    2006 - 2011
    Reksoft
    • Designed and developed a database for a Logistics Optimization System for a North-European customer.
    • Responsible for the PL\SQL programming, pre-production RDBMS setup, Oracle administration, and data loading. Worked with a source code control system and tracked bugs with an internal bug tracking system.
    • Developed a system that is still in production, and due to good design, it successfully upgrades the Oracle version.
    Technologies: Oracle
  • Junior Developer

    2005 - 2006
    FORS SPb
    • Built various Oracle database projects, implementing business logic in PL\SQL and Java.
    • Tracked and fixed bugs with an internal bug tracking system.
    • Created a set of Shell scripts for data loading into a database and worked with Java front-end portlets.
    Technologies: Java, Oracle

Experience

  • ESB Software Solution
    https://www.gosuslugi.ru/foreign-citizen?lang=en

    Public Services Portal is a part of the infrastructure which provides data exchange and technological interaction of information systems used for rendering state and municipal services in electronic form.

Skills

  • Languages

    SQL, Java, Python, TypeScript, PL/pgSQL, Bash Script
  • Paradigms

    Database Design, ETL, REST, Continuous Delivery (CD), Continuous Integration (CI), Business Intelligence (BI)
  • Platforms

    Oracle, Linux, Google Cloud Platform (GCP), Heroku, Windows, SAP HANA, SAP NetWeaver, JVM, Pentaho, Amazon Web Services (AWS), Docker, Jupyter Notebook
  • Storage

    PL/SQL, PostgreSQL, Oracle DBA, PL/SQL Developer, Spring Data JPA, Database Architecture, Oracle PL/SQL, Microsoft SQL Server, Sybase, IBM Db2, MySQL
  • Tools

    Sybase PowerDesigner, Pentaho Data Integration (Kettle), Jira, Git, Subversion (SVN)
  • Other

    PL/SQL Tuning, Pentaho Reports, Shell Scripting, SAP ERP, Database Clusters, hana, SAP Business Warehouse (BW), Relational Database Design, Data Warehousing, Oracle Performance Tuning, Query Optimization, AWS, SAP, AWS DMS, Data Warehouse Design
  • Frameworks

    Spring Boot, Swagger, JUnit, TestNG, Hibernate

Education

  • Master's Degree in Computer Science
    1999 - 2005
    ITMO University - Saint-Petersburg, Russia

Certifications

  • Root Cause Analysis Expert E2E Solutions Operations
    JANUARY 2011 - PRESENT
    SAP AG
  • Service Consultant Early Watch
    JANUARY 2011 - PRESENT
    SAP AG
  • Oracle Database Administrator Certified Associate
    SEPTEMBER 2007 - SEPTEMBER 2017
    Oracle

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