Катерина

KATERYNA HLADKA
SKILLS FULL-STACK DEVELOPER

Front-End: React, JavaScript, [open contact info](look above in the "contact info" section) https://github.com//kateryna-hladka
TypeScript, HTML5, CSS3,
[open contact info](look above in the "contact info" section)
Flexbox, Grid, Bootstrap, [open contact info](look above in the "contact info" section)
hladka-4a9299331/
SASS/SCSS, CSS Animations
Back-End: C#, .Net, ASP.NET
I am a motivated Full-Stack Developer with a strong passion for coding. Driven
Core MVC
to make a positive impact on the team through my skills. Focused on continuous
Data Access: Entity Framework, professional growth and development
LINQ, ADO.NET
Databases: MS SQL
API & Communication: REST API, PROFESSIONAL EXPERIENCE
GraphQL
Version Control: Git, GitHub, .NET DEVELOPER Sep 2025 - Sep 2026
GitLab, Bitbucket IT-Enterprise Company. Remote
Design Tools: Adobe Photoshop, Achieved a 40% execution speed increase and boosted UI
Figma responsiveness by analyzing critical paths with .NET Stopwatch,
refactoring complex SQL queries, and optimizing database-bound LINQ
EDUCATION operations
Designed and implemented an automated event logging mechanism
triggered by document status changes, along with a dedicated
SOFTWARE ENGINEERING COURSE administrative dashboard for monitoring and auditing
Enhanced business logic execution speed in C# by replacing linear
Sana Commerce Company
Sep 2024 – Dec 2025 searches in large LINQ collections with hash-table-based algorithms
(Dictionary), significantly reducing data processing time
Contributed to building a Conducted a large-scale refactoring of the codebase adhering to DRY
mobile-first fitness application principles, extracting duplicate logic into a shared class library, which
in a team using ASP.NET Core, enhanced readability and improving code maintainability and reducing
React, GraphQL, and MS SQL, duplication across the codebase
including database design and
UI development.
Integrated the FatSecret API to FULL-STACK DEVELOPER Aug 2023 - Dec 2024
provide food and nutrition data Freelance. Remote

Designed and built the integration architecture between the React
COMPUTER SOFTWARE ENGINEERING frontend and ASP.NET Core backend, facilitating efficient data exchange
Zhytomyr Polytechnic University via REST API (JSON)
Sep 2021 – Jun 2025 Developed a comprehensive admin dashboard for store managers:
engineered CRUD methods in ASP.NET Core for inventory management,
Developed a full-stack online
and built matching React tables and upload forms using GraphQL for
store using ASP.NET Core,
flexible data fetching
JavaScript, and MS SQL,
Implemented the Strategy pattern to integrate multiple shipping
integrating LiqPay and Nova
providers (Nova Poshta, Ukrposhta, etc.), enabling the seamless
Poshta APIs
addition of new logistics operators without modifying existing
application code
Optimized React performance by replacing array indexes with unique
LANGUAGES database IDs in key props to accelerate element updates. Ensured
seamless user experience across devices using a Mobile-first approach
Worked extensively with Entity Framework Core (both Code-First and
Ukrainian: mother-tongue Database-First approaches) to build robust data models and
English: B2 streamline database operations