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Location

Poland

Rate

$20  / per hour

Years of experience

13+

About

As a seasoned Software Developer with extensive experience in various programming languages and technologies, I have successfully contributed to multiple high-impact projects. Since October 2020, I have been working at NEXT SP Z O O, where I participated in two key projects. The first was a research initiative co-financed by the European Union in collaboration with the Polish Japanese Academy of Information Technology, where I programmed in Python, developed neural network models using Keras and Pandas, and created an admin panel in Ruby on Rails. The second project was a finance application where I handled back-end API creation in Ruby on Rails, front-end development with React JS, and utilized tools such as Elasticsearch, Redis, and Sidekiq. I also played a crucial role in updating old code bases, conducting code reviews, and mentoring junior developers. Prior to this, I worked as a Software Developer at Betegy Sp Zoo in Warsaw from April 2019 to October 2020, focusing on back-end development for client applications such as 22bet.pl and win.gg. My responsibilities included data integration using RabbitMQ and REST API, creating APIs for front-end use, writing unit tests, and assisting in HTML file creation. Additionally, I have experience as an automation tester at Nakanapie.pl, a teacher and developer at Akademia Kodu, and a freelancer developing applications in Objective C and Ruby on Rails. My educational background includes a Master's degree in Computer Science from the Polish Japanese Academy of Information Technology, along with certifications such as ISTQB Certified Tester Foundation Level and OCP Oracle Certified Professional Java SE 8 Developer.

Tech Stack

Rails, API, Git, Java, PostgreSQL, Ruby on Rails, SQL

Experience

  • Project Development and Implementation: Participated in a research project co-financed by the European Union, collaborating with a team from the Polish Japanese Academy of Information Technology. Developed neural network models using Python, Keras, and Pandas.
  • Backend and API Development: Created backend solutions and APIs for finance projects and client applications using Ruby on Rails. Ensured efficient data processing and integration with frontend components.
  • Frontend Development: Developed frontend components using React JS for finance projects, ensuring seamless user experiences and integrating with backend APIs.
  • Data Integration and Processing: Managed data integration tasks using RabbitMQ and REST API, ensuring smooth data flow and processing for applications such as 22bet.pl and win.gg.
  • Code Quality and Maintenance: Updated old code bases to modern development standards, improving functionality and performance. Conducted code reviews and used tools like RuboCop and RSpec for maintaining high code quality.
  • Mentorship and Team Collaboration: Mentored testers and junior developers, providing guidance and support to enhance their skills and contribute to project success. Conducted daily standups and collaborated with project managers and cross-functional teams.
  • Automation Testing and Quality Assurance: Created automation tests with Selenium at Nakanapie.pl to ensure software quality and reliability. Developed unit tests for backend components to maintain high standards of code quality and functionality.

Employment history

Software Developer, NEXT SP Z O O October 2020 - present

I have participated in 2 projects:
1) Implementation of a research project co-financed by the European Union. Cooperation with a team from the Polish Japanese Academy of Information

Technology: Python, Keras, Pandas, Google Colab
– Crawling data for nlp bots(Scrapy)
– Creating admin panel in Ruby on Rails (rails-admin, Mysql)

2) Finance project in Ruby on Rails:

– everyday standups with PM from USA
Technology:rubocop, code review, rspec/ back-end (creating API in Ruby on Rails) / elasticsearch, redis, sidekiqfront-end (react js)

– Updated old code bases to modern development standards, improving functionality.
– mentoring Testers and junior developers

Software Developer Ruby on Rails, Betegy Sp Zoo, Warszawa April 2019 - October 2020

– Creating the back-end of the application for clients:
– Data integration: RabbitMQ, REST API.
– Contact with customers.
– Creating an api for the front-end.
– Writing unit tests.
– Help in creating html files for the front-end.
– Creation of a plugin for bookmakers in Javascript.

Automation Tester, Nakanapie.pl, Warsaw

Created and maintained automated test scripts using Selenium to ensure comprehensive test coverage and improve testing efficiency.
Conducted thorough testing of software applications, identifying defects and inconsistencies. Documented and reported bugs, working closely with the development team to ensure timely resolution.
Designed and implemented test plans and test cases for various features and functionalities. Executed test cases, analyzed test results, and provided detailed feedback to improve the overall quality of the software product.

Teacher/ Ruby on Rails Developer, Akademia Kodu, Warszawa June 2016 - January 2020

– Creation of an e-learning platform: (herok deployment)
– Creating a script that integrates clickwebinar, vimeo, slack (automatic recordings)
– Conducting didactic programming classes: Java, Python, Ruby, Rails, Algorithmics, Database

Freelancer, Mimcode June 2013 - May 2016

– Creating an application in Objective C available on the App Store:
– Creating an application in Ruby on Rails for product and warranty management: GuaranteesBox.
– Creating an application in Objective C: GuaranteesBox
– Creating a back-end for managing parking spaces in Ruby on Rails.

Software developer Ruby on Rails, Taptera Inc. November 2011 - March 2013

Creating an application in Ruby on Rails
– events (conference management)
– rooms (management of conference rooms)
– colleagues (contact management in the company)
I was responsible for the backend of the application. Tech Stack: (rspec, codeclimate, heroku, jenkins).

Java Developer, Cubiware, Warsaw

– Creating java applications in BD-J technology
– Developed Java applications using BD-J technology, ensuring robust and efficient performance for interactive TV platforms.
– Participated in the design and implementation of software solutions, adhering to best practices in software engineering to deliver high-quality applications.
– Conducted thorough testing and debugging of Java applications to identify and resolve issues, ensuring reliable and error-free software releases.

Education history

Polsko Japońska Wyższa Szkoła Technik Komputerowych July 2007 - July 2012 Computer Science, Master Degree
Polsko Japońska Wyższa Szkoła Technik Komputerowych
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