Profilbild von Denis Khizhniak Data Engineer, SQL Developer aus Neuchatel

Denis Khizhniak

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Letztes Update: 06.09.2022

Data Engineer, SQL Developer

Abschluss: MSc in Applied Mathematics and Computer Science, Krasnodar, Russia
Stunden-/Tagessatz: anzeigen
Sprachkenntnisse: englisch (verhandlungssicher) | französisch (Grundkenntnisse) | russisch (Muttersprache)

Dateianlagen

CV Denis Khizhniak.pdf

Skills

- Experience: 7+ years of working experience in Data Engineering 
- (ETL, DWH, Data integration, Software Engineering)
- Education: MS in Applied Mathematics and Computer Sciences
- Skills: SQL, PL/SQL, Oracle, Python, Talend, deep expertise in managing ETL processes, confident with Linux environment, bash scripting
- Language: Professional working proficiency in English
- Achievements: 
    - Developed the PL/SQL package to generate SQL transformation scripts for the migration project in the U.S.;
    - Reworked the forest of data flows in Talend tool and reorganized them for better maintenance with a clearer structure for dimensions, facts, and stage data flows;
    - Developed Python script to retrieve data and validate Sisense dashboards using API calls;
    - Contributed to the success of the migration project in the U.S., that let the team complete the project 30% faster;
    - Picked up the work on the migration project in Uruguay breaking down and improving the performance of existing SQL queries;
    - Awarded as the best employee of the year for a bunch of analytical projects;
    - Developed the Teradata procedure for collecting statistics of metrics for segmentation of the consumer basket with the formatting of the result.
    - Contributed to the integration of the configuration 1C:Hotel into the children's center
    - Developed the module for waybills downloading;
    - Developed the subsystem for diploma and other graduate documentation formation.

Projekthistorie

02/2018 - 03/2019
Software Engineer
EIS Group (Internet und Informationstechnologie, 10-50 Mitarbeiter)

Contributed to 2 large ETL projects by providing a multi-dimensional experience with Sisense dashboards for insurance clients, including:
- refactoring of ETL jobs;
- optimization of SQL queries;
- fixing Elasticube query paths

07/2015 - 02/2018
Software Engineer
Netcracker (Internet und Informationstechnologie, 250-500 Mitarbeiter)

Contributed to 4 ETL projects by migrating customer’s data and helping to rebuild their infrastructure upon Netcracker Framework, including:
- developing transformation SQL scripts;
- validating of the processed data items;
- building dynamic scripts for generating SQL queries;
- creating spot fixes;
- developing SQL-based reports

11/2013 - 05/2015
Lead specialist
Magnit (Konsumgüter und Handel, 5000-10.000 Mitarbeiter)

Delivered projects to provide SQL-based reports for the analytical sector, including:
- developing SQL queries;
- shaping the datasets into Excel pivot tables;
- building ETL flows from text files to DB

09/2012 - 08/2013
Junior Software Engineer Consultant
Portal-Yug (Internet und Informationstechnologie, 50-250 Mitarbeiter)

Performed various client-specific tasks to improve clients' work and facilitate better accounting experience, including:
- developing SQL queries and 1C reports;
- customizing 1C configurations;
- performing 1C configuration updates;
- building 1C modules

01/2011 - 05/2011
Software Engineer
Intersoft (Internet und Informationstechnologie, 50-250 Mitarbeiter)

Performed various client-specific tasks to improve clients' work and facilitate better accounting experience, including:
- developing SQL queries and 1C reports;
- building 1C modules

Reisebereitschaft

Verfügbar in den Ländern Schweiz
Profilbild von Denis Khizhniak Data Engineer, SQL Developer aus Neuchatel Data Engineer, SQL Developer
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