Experience

Bolt
• Truck Transportation
• 1 - 100 Employee
• Senior Software Engineer

  • Dec 2021 - Present


Allegro

• Norway
• Advertising Services
• 1 - 100 Employee

• Senior Software Engineer

  • Apr 2020 - Oct 2021

  - leading engineer of multiple projects - mentor of summer intern - fine-tuned and optimized Elasticsearch ads index - introduced Spark jobs scheduler based on Apache Airflow - streamlined offer badge application process in microservices environment using Java, Kotlin, Reactor, MongoDB

• Software Engineer

  • Jun 2017 - Mar 2020

  Warsaw, Masovian District, Poland



EPAM Systems

• IT Services and IT Consulting
• 1 - 100 Employee

• Senior Software Engineer

  • Apr 2016 - Apr 2017

  Cracow, Warsaw The youngest Senior Software Engineer in Cracow GDO office. Providing software engineering service for Royal Bank of Scotland (see project specs below)

• Software Engineer

  • Jun 2014 - Mar 2016

  Kraków, woj. małopolskie, Polska Providing software engineering service for Cartera Commerce and Royal Bank of Scotland



Royal Bank of Scotland (via Epam Systems)

• Senior Software Designer

  • Jan 2016 - Aug 2016

  Kraków, woj. małopolskie, Polska Development of highly resilient, low-latency application for Royal Bank of Scotland. Used technologies included Java 8, Apache Camel, Apache Zookeeper. Agile work methodology with frequent code reviews and continuous integration. - increased application resilience by enabling it to work in distributed environment and implementing automatic leader election, - implemented error handling to enhance reliability



Cartera Commerce, Inc

• United States
• Advertising Services

• Software Engineer

  • Nov 2014 - Dec 2015

  Development of backend system used for aggregating retail offers and searching through them - reduced average product archive search time from 3h to 100ms by creating and fine-tuning Elasticsearch index in place of MySQL, - reduced daily aggregation time from 20h to 5h by implementing new batch processing application with Scala and Apache Spark on AWS EC2 cluster in place of previous one using PHP and Java, - automated orchestration and daily… Show more Development of backend system used for aggregating retail offers and searching through them - reduced average product archive search time from 3h to 100ms by creating and fine-tuning Elasticsearch index in place of MySQL, - reduced daily aggregation time from 20h to 5h by implementing new batch processing application with Scala and Apache Spark on AWS EC2 cluster in place of previous one using PHP and Java, - automated orchestration and daily workflow, including updating technology stack before each run by designing and implementing custom Chef cookbooks Show less



Sabre Holdings

• United Kingdom
• Consumer Services
• 1 - 100 Employee

• Associate Software Developer, Analyst

  • Oct 2012 - Oct 2013

  Kraków, woj. małopolskie, Polska System used by travel agencies to store and modify profiles of travelers. Project included integration of many other Sabre systems and designing a graphical interface. The application was a part of Sabre Red Workspace platform, built using Eclipse RCP with the help of Maven. Graphical interface created using SWT and Eclipse RCP. - enabled creation of traveler profile in PDF format by using iText library - gained versatility by becoming an interim QA engineer

• Software Developer - Intern

  • Jul 2012 - Sep 2012

  Kraków