Владислав

Contacts
Lviv
VLADYSLAV [відкрити контакти](див. вище в блоці «контактна інформація»)
KALKO [відкрити контакти](див. вище в блоці «контактна інформація»)
https://github.com/vkalko
DATA ENGINEER

MOTIVATION
I’m an experienced Data Engineer and Analyst with Java knowledge and Linux administration
background passionate about data processing, automatization of routine tasks, Java
programming, and cloud technologies. I would be happy to share my expertise in bringing
higher value for the company, delivering high quality new solutions, and optimizing existing
ones.

EDUCATION
KNUTE, KYIV KPI, KYIV KNU, KYIV
International Software Engineering, Informatics, Master
economics, Master Bachelor 2018 – 2019
2012 – 2018 2013 – 2018

EXPERIENCE
Customer Support (L0, L1) | Colobridge GmbH
02.2018 – 09.2020
I was handling incoming customer requests regarding server setup, software installation,
website migration, and issue fixing.
Got a decent understanding of Linux and Windows operating systems from an administrator
perspective. As well as a good understanding of how networks, web and mail servers work.
Big Data Engineer & Analyst| Rinf Tech
01.2021 – 09.2025
As a Data Engineer, I worked on implementation, deployment and monitoring of ETL data
pipelines ensuring data correctness, consistency, and security; setting up GCP infrastructure
using IaC approach (Github + Terrugrunt + Terraform); took part in development of client-side
Kotlin application for recognition of items; administration of BigQuery data warehouse.
As a Data Analyst, I was creating meaningful business insights by leveraging Looker
dashboards; administrating Looker instance; implementing row-level security for the data.
Key achievements:
- Migration of an analytical solution from Click View to a new platform – Looker;
- Implementation of real-time data pipelines using Dataflow (Apache Beam Java SDK) (in
contrast to a scheduled one) as well as a solution to transform that data in batches;
- Leading a group of developers responsible for standardizing development process;
- Significantly reducing data pipeline cost by implementing SQL query optimization
techniques.
SKILLS
• Java, Maven • English Upper Intermediate
• ETL principles • Good communication skills
• GCP (PubSub, BigQuery, Dataflow) • Attention to details, responsibility
• SQL (performance, cost optimization) • Multitasking
• JavaScript/TypeScript (Beginner level) • Team player with no hesitation to talk
• Linux administration and clarify things
• CI/CD (Github actions)

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