Marian

Marian Mandziuk
[open contact info](look above in the "contact info" section)
[open contact info](look above in the "contact info" section)
Objective:
Obtain a position as a Software Engineer
Skills:
Java, OOP, SQL, REST, Spring Boot, Spring Data JPA, HTML, Git, Dart, Flutter.

Experience:
EPAM Systems 2021 — 2023
Project - Platform for providing financial services
 Worked in a distributed backend system with multiple services
 Implemented backend enhancements in Java (JAX-RS), including extending API
responses and adjusting business logic
 Maintained and updated system behavior during Auth0 migration (authentication flow
changes)
 Analyzed slow database queries using Datadog and identified performance issues
 Extended Azure CI/CD pipelines by integrating SonarQube and JaCoCo for static
analysis and test coverage
 Configured quality gates to enforce code quality during merge process
 Performed frontend maintenance in Angular(1,2) and custom framework (UI fixes,
styling, i18n, bug fixing)
 Investigated legacy codebase and documented system behavior using diagrams
(Lucidchart)
 Handled bug fixing, hotfixes, and rollback scenarios across multiple environments (test,
dev)
Technologies: Java 8, JAX-RS, PostgreSQL, Redis, Swagger, jUnit, Javascript, Typescript,
AngularJS, HTML, CSS.
Tools: IntelliJ IDEA, Visual Studio Code, Git, Microsoft ADO, Postman, Datadog, Kibana,
SonarQube, Lucidchart.

N-Back app (Flutter/Dart) 2024 - 2025
Developed and published a cognitive training mobile app on Google Play.
 Designed and developed functionality of the app, including state management using
Provider and persistent data storage with Isar and SharedPreferences
 Integrated Crashlytics for monitoring and resolving runtime errors.
 Implemented subscription features and integrated RevenueCat for subscription
management.
 Provided app accessibility and smooth functionality across a wide range of device sizes.
  Prepared and published the application to Google Play
Technologies: Flutter, Dart, RevenueCat, Provider, Crashlytics, Isar , SharedPreferences.
Tools: Visual Studio Code, Git.

freelance projects 2017 — 2020
 Developed UI parts of image manipulation and annotation tool
 Reused and developed ui components for skills assistans AI tool, providing statistics on
skills diversity.
 Conducted a PoC for visualizing the direction of rotation of a circular object in a 2D
projection.

Halych National Park 2015 — 2021
Responsibility:
 Managed and maintained IT infrastructure.
 Created and edited content for digital platforms.

Languages:
English – intermediate; Ukrainian — native.

Education:
2011-2014 National Forestry University of Ukraine, specialty "Information Technologies";
2007-2011 Technological College of the National University "Lviv Polytechnic".