Olha

Olha Kryzhanovska
Poland, Kraków
[открыть контакты](см. выше в блоке «контактная информация»)
Software Developer [открыть контакты](см. выше в блоке «контактная информация»)
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PROFILE

I am a Software Developer with 5 years of experience in creating, testing, and maintaining web
applications. I worked on few big web platforms and several small short-term projects. I can
effectively self-manage during independent projects, as well as collaborate as part of a
productive team. I am experienced with the latest development technologies.

EMPLOYMENT HISTORY

-Senior Frontend Developer at Aristocrat Interactive, Kraków, Poland
March 2025 — Present
Project: Legitimate online gaming, iLottery and entertainment. I-Gaming sphere.
Technologies: Angular.JS / React.JS / JS / Azure

-Software Developer at KOIA, Gdańsk, Poland
January 2024 — February 2025
Project: The Norwegian debt collection register platform provides an overview and tools for
people to handle their debts. Fintech sphere.
Technologies: React / Next.JS / TypeScript / TanStack / Zustand / Playwright / Node.JS
Express / Nest.JS / Prisma / Express / Tailwind CSS

-Software Developer at GridDynamics, Kraków, Poland
January 2021 — December 2023
Projects: The Dutch platform covers various HR needs and issues when working with companies
of different sizes. Time tracking tool. Development of internal company projects.
Technologies: React / Next.JS / TypeScript / JS / Redux / Redux Toolkit / Cypress / Playwright
Angular / Vue.JS / React Testing Library

-Frontend Developer at Cryptocurrency Platform, Kharkiv, Ukraine
July 2020 — December 2020
Project: The Ukrainian web application collects, stores, and operates crypto assets in one place.
Technologies: Vue.JS / JS / HTML / CSS

EDUCATION

Bachelor’s degree in Computer Science, KHEU, Kharkiv, Ukraine
September 2019 — May 2023

SKILLS

JS/TS, Angular.JS/React/Next.JS, Node.JS, Nest.JS, Redux, Redux Toolkit, TanStack, Zustand,
Prisma, Express, Cypress, Playwright, jest, react-testing-library, styled-components, Storybook,
Tailwind CSS, npm, yarn, Figma, Jira, Trello, Miro Sentry, LogRocket, AWS, Grafana
PROJECTS

Debt collection register platform, Oslo, Norway
January 2024 — February 2025

Team: 6
Description:
The Norwegian debt collection register platform provides an overview and tools for people to
handle their debts. Integration with many banking systems and bank advisors to collect and
record information about all user debts, both personal and external types. Interactive
tools/dashboards to familiarize the user with debts and successful step-by-step repayment
planning. The presence of a separate internal administrative panel for managing the main
platform. Also, the presence of one more separate learning platform for users to learn how to
pay off debts, etc.

Responsibilities:
• Developing reusable React.TS/Next.TS components which build new features for the
monorepo project.
• Redesign and rewrite existing parts of the application with new, more innovative approaches,
improving performance.
• Interaction with parts of the Node.JS BE code, implementation of new small functions, and
improvement of already existing code.
• Simple DB Prisma migrations, working with existing Nest.JS code.
• Introduction and addition of unit testing and e2e testing to simplify the development process.
• Introducing localization into a project using a content management system, Storyblok.
• Improvement and development of new features for the admin part of the application for
managing the main platform.
• Working with the AWS and Grafana tools for monitoring platform logs and other various
needs.
• Participation in client meetings to plan and review business logic and requirements for
further development.
• Manually building and deploying application parts both for the FE & BE sides after merging
new features/fixes at various environments depending on the need.
• Creating AC (acceptance criteria) for stories/tasks/bugs before sprint planning, additionally
creating documentation after releasing new features.

Technologies: React / Next.JS / JS / TS / TanStack / Zustand / Playwright / Node.JS / Nest.JS
Prisma / Express / Tailwind CSS / MUI

Deployment: AWS / Docker
PROJECTS

TimeChimp, Amsterdam, Netherlands
August 2021 — December 2023

Team: 16
Description:
A platform for time, expense, and mileage tracking. With management systems for any size
organization. Teams, tasks, projects management, HRM page (keeping automatic track of
things such as sick leave, holidays, overtime), issuing invoicing and estimates, enterprise-level
reporting, scheduling and resource planning, internal approval/rejection system, and real-time
analytics using interactive dashboards.

Responsibilities:
• Migration of an Angular-based 1.0 version of the application to React/Next.JS, improving
performance and UI/UX interfaces.
• Contribution to the open-source UI-kit library (tacugama), focusing on improving user and
development experience with additional creation of Storybook documentation for
developers/designers.
• Collaboration and work with the design team to implement new features and fix bugs.
• Implementation and addition of testing Cypress/Playwright for both the main part of the
application and for the UI library, with full code coverage.
• Participation in meetings to improve and build the logic of the business side of the application.

Technologies: React / Next.JS / JS / TS / Redux / Redux Toolkit / Cypress / Playwright
Angular

Deployment: Azure

Internal platform for testing, Kharkiv, Ukraine
January 2021 — August 2021

Team: 3
Description:
An internal platform for passing tests in a selected specialization. With the ability to edit/delete
tests, and change specializations. And with the ability to view test results later.

Responsibilities:
• Developing an application authorization.
• Developing components for displaying testing flow.
• Developing components for displaying specialization cards.
• Building a simple mockup and design of the whole application in Figma.
• Presentation of the project idea and its necessity to management.

Technologies: React / JS / TS / Redux / Node.JS / CSS / styled-components
Crypto Platform, Kharkiv, Ukraine
July 2020 — December 2020

Team: 5
Description:
The Ukrainian web application collects, stores, and operates crypto assets in one place.

Responsibilities:
• Creation of new functional parts of the platform.
• Support the existing legacy code and embed new parts in HTML.
• Creating a new application design.
• Participation in business meetings with the client to consider the following requirements in
development.

Technologies: Vue.JS / JS / HTML / CSS