Jacek Maciąg, Developer in Kraków, Poland
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Jacek Maciąg

Verified Expert  in Engineering

Quality Assurance Developer

Location
Kraków, Poland
Toptal Member Since
September 20, 2019

Jacek is a dedicated and scrupulous (a perfectionist) tester with experience in both back-end and front-end. He primarily focuses on Java, but he also enjoys learning and exploring new technologies. Knowledge is power.

Availability

Part-time

Preferred Environment

IntelliJ IDEA, Linux, Windows

The most amazing...

...project I've worked on was a market price trend recognition and forecasting tool.

Work Experience

Quality Assurance

2017 - PRESENT
Welltok
  • Performed front-end and back-end testing of over 20 applications (functional, integration, and end-to-end).
  • Maintained test environment (deployments, setup, and debugging).
  • Developed test framework and tests cases for a Ruby test framework running across various environments.
  • Debugged (with Splunk and Sentry) and reported defects (via Rally) for multiple applications across multiple delivery pipelines.
  • Worked remotely with a team located across different countries and continents.
Technologies: Grafana, Splunk, SemaphoreCI, Jenkins, Deis, Kubernetes, Java, Scala, JavaScript, Ruby

Software Developer in Test

2017 - 2017
Akamai Technologies
  • Developed automated Selenium front end test framework (Java, TestNG, Selenium) for a client-facing reporting tool.
  • Created automated tests (REST Assured/Retrofit) for an application serving multiple clients.
  • Reported and analyzed defects before deployment.
  • Helped with onboarding and training employees.
  • Managed the test framework development.
Technologies: Selenium, Java

Quality Control Analyst

2015 - 2017
Brown Brothers Harriman
  • Designed, prepared, and executed both manual and automated test scripts.
  • Wrote test plan and strategy documents.
  • Completed bug reporting and analysis.
  • Developed an automated test framework using Java, Selenium, Serenity + Jenkins/Docker for the bank’s major corporate actions systems.
  • Shared knowledge and provided help to non-business team members based on previous experience.
  • Provided assistance to UAT and production environment users.
Technologies: Jenkins, Selenium, Java

Opes

A collection of microservices forecasting price and automating order execution of commodities/forex built with Java, Spring Boot, Postgres, Python, and Flask.

Languages

Java, Gherkin, SQL, Ruby, JavaScript, Scala, Python, Bash

Frameworks

Selenium, JUnit, TestNG, Spring Boot, Flask

Tools

Cucumber, IntelliJ IDEA, Postman, Jira, Rally, Confluence, Git, GitHub, Jenkins, SemaphoreCI, Grafana, DataGrip, PyCharm, Sublime Text 3, Splunk, GitLab, Travis CI, Sentry, Slack

Other

Quality Assurance (QA), QA Testing, Software QA, Manual QA, QA Automation, Website QA

Libraries/APIs

Deis, REST APIs

Paradigms

Object-oriented Programming (OOP), Agile, Waterfall Development

Platforms

Linux, Windows, Kubernetes, Docker

Storage

MySQL, PostgreSQL, MongoDB, Amazon S3 (AWS S3)

2015 - 2016

Post-graduate Degree in Systems Design

Akademia Górniczo-Hutnicza im.S.Staszica w Krakowie - Kraków, Poland

2006 - 2011

Master's Degree in International Relations

Krakowska Akademia im. Andrzeja Frycza Modrzewskiego - Kraków, Poland

SEPTEMBER 2017 - SEPTEMBER 2019

International English Language Testing System (IELTS) General Training

British Council

DECEMBER 2016 - PRESENT

ISTQB Certified Tester: Foundation Level

International Software Testing Qualifications Board

Collaboration That Works

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