
Over a three-month period, Volodymyr Filik developed and maintained a suite of numeric utilities, analytics, and API testing tools across the UA-1378-TAQC/codeWars1378 and GreenCity repositories. He implemented core features in Java and Python, including numeric calculations, array processing, and financial computations, while refactoring code for readability and stability. In GreenCity, he expanded API test coverage using Pytest, focusing on authorization, input validation, and robust test data management to reduce flaky tests and accelerate CI feedback. His disciplined approach to code hygiene, dependency injection, and assertion-driven testing ensured reliable releases and improved the maintainability of backend systems.
June 2025 monthly performance summary for UA-1378-TAQC/GreenCity. Focused on stabilizing test data for Eco News to ensure reliability of the QA suite. No new features shipped this month; primary work centered on fixing data fixtures and aligning IDs across tests to prevent regression and flaky tests. This work strengthens CI feedback loops and accelerates future development cycles.
June 2025 monthly performance summary for UA-1378-TAQC/GreenCity. Focused on stabilizing test data for Eco News to ensure reliability of the QA suite. No new features shipped this month; primary work centered on fixing data fixtures and aligning IDs across tests to prevent regression and flaky tests. This work strengthens CI feedback loops and accelerates future development cycles.
May 2025: Strengthened GreenCity Eco-news API quality and repository hygiene to improve release confidence and reduce defects. Delivered enhancements to the Eco-news API Testing Suite, expanding coverage for GET by ID and POST endpoints with authorization checks, input validation, and payload integrity assertions, supported by robust test data management. Implemented tests for posting news across success and failure paths (201, 400, 401). Cleaned up repository hygiene by removing a duplicate .idea/ entry in .gitignore to ensure clean diffs and prevent IDE config leakage. These changes improved test reliability, reduced flaky tests, and accelerated CI feedback, enabling faster and safer releases. Technologies demonstrated include REST API testing, test data management, assertion-driven testing, and disciplined Git workflow.
May 2025: Strengthened GreenCity Eco-news API quality and repository hygiene to improve release confidence and reduce defects. Delivered enhancements to the Eco-news API Testing Suite, expanding coverage for GET by ID and POST endpoints with authorization checks, input validation, and payload integrity assertions, supported by robust test data management. Implemented tests for posting news across success and failure paths (201, 400, 401). Cleaned up repository hygiene by removing a duplicate .idea/ entry in .gitignore to ensure clean diffs and prevent IDE config leakage. These changes improved test reliability, reduced flaky tests, and accelerated CI feedback, enabling faster and safer releases. Technologies demonstrated include REST API testing, test data management, assertion-driven testing, and disciplined Git workflow.
April 2025: Delivered a diverse set of business-value features and critical fixes in UA-1378-TAQC/codeWars1378. Key features include core numeric utilities and calculations (liters, cuboid volume, mpgToKPM, stringToNumber, TwoDecimalPlaces, rainfall mean, and floating-point approximation), array/sequence processing utilities (for-loop construct, countPositivesSumNegatives, seriesSum, findNB), balance calculation utility, and rainfall-related analytics (variance). Additional capabilities were introduced for NBA Cup, perimeter, stocksummary, and the Task 5–8 enhancements (string-to-number, formatting decimal places, Wilson primes, trailing zeros). Ongoing maintenance and refactors improved code readability and stability across modules.
April 2025: Delivered a diverse set of business-value features and critical fixes in UA-1378-TAQC/codeWars1378. Key features include core numeric utilities and calculations (liters, cuboid volume, mpgToKPM, stringToNumber, TwoDecimalPlaces, rainfall mean, and floating-point approximation), array/sequence processing utilities (for-loop construct, countPositivesSumNegatives, seriesSum, findNB), balance calculation utility, and rainfall-related analytics (variance). Additional capabilities were introduced for NBA Cup, perimeter, stocksummary, and the Task 5–8 enhancements (string-to-number, formatting decimal places, Wilson primes, trailing zeros). Ongoing maintenance and refactors improved code readability and stability across modules.

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