Summary
Overview
Work History
Education
Skills
Languages
Timeline
Generic
ANNA-ALONA LEHEZA

ANNA-ALONA LEHEZA

Cracow

Summary

Frontend / Fullstack Developer with 3+ years of freelance and commercial experience in web, desktop, and mobile application development. Skilled in building landing pages, admin panels, REST APIs, and local database systems using React.js, TypeScript, NestJS, Java, Python and SQL technologies. Experienced with third-party integrations including Facebook and TikTok APIs for marketing and advertising platforms. Developed desktop applications using JavaFX, SQLite, JDBC, and worked with C# and ASP.NET web systems.

Strong communication and teamwork skills with experience collaborating in international and agile environments. Quick learner with the ability to rapidly adapt to new technologies, tools, and project requirements. Highly responsible, detail-oriented, and capable of managing multiple tasks simultaneously while meeting deadlines. Skilled in problem-solving, independent decision-making, and maintaining effective communication with clients and team members. Motivated to continuously improve technical and professional skills through practical experience and self-learning.

Overview

4
4
years of professional experience

Work History

Freelance

Freelance
01.2022 - Current

• Developed various academic and commercial projects for students and clients with different levels of complexity
• Created responsive landing pages and web applications using React.js, JavaScript, TypeScript, HTML, and CSS
• Developed desktop applications in Rzthon or Java using JavaFX, Swing, SQLite, and JDBC
• Built Android applications with user authentication, local storage, and database integration
• Implemented CRUD functionality, admin panels, booking systems, and management interfaces
• Designed and developed relational database schemas and worked with SQL databases
• Created systems with local databases, file handling, and data processing functionality
• Worked on both frontend and backend parts of applications, including REST API integration
• Developed custom UI/UX solutions for desktop, mobile, and web platforms
• Assisted with debugging, optimization, refactoring, and feature implementation in existing projects
• Adapted project architecture and technologies according to client and academic requirements
• Managed multiple projects simultaneously while meeting deadlines and technical specifications

Software Developer

MGID (TrackBoost)
Poland
11.2025 - 05.2026

• Developed and maintained frontend functionality for an arbitration and marketing analytics platform using React.js and TypeScript
• Built interfaces for campaign management, traffic monitoring, statistics dashboards, and tracking systems
• Integrated third-party APIs and services including Facebook SDK, Facebook Ads, and TikTok marketing integrations
• Worked with REST APIs for synchronization of advertising data, campaign performance metrics, and user analytics
• Implemented tracking and attribution functionality for advertising traffic and conversion monitoring
• Developed reusable UI components and optimized frontend architecture using Ant Design
• Collaborated with backend developers, designers, and media buying teams in agile development processes
• Participated in debugging, optimization, feature implementation, and improving application performance
• Worked with dynamic tables, filtering systems, forms, and real-time data updates
• Improved responsiveness and usability of internal management tools for traffic and campaign operations
• Assisted in maintaining scalable frontend codebase and integration logic for advertising systems

IT Programmer

KDC
Košice
01.2024 - 08.2024

• Developed and maintained web application functionality using C# and ASP.NET
• Worked on frontend and backend development for internal company web systems
• Implemented CRUD operations, business logic, and data processing features
• Integrated SQL databases and handled database queries and application data flow
• Participated in development of admin panels and management interfaces
• Improved website functionality, responsiveness, and performance
• Collaborated with team members on debugging, testing, and feature development
• Worked with API integrations and backend communication logic
• Maintained and optimized existing modules and application architecture
• Participated in support and maintenance of production web applications

Education

Informatika -

Technická univerzita v Košiciach / Fakulta Elektrotechniky a Informatiky
Košice, Slovensko
01-2024

Computer Science (Erasmus+ Mobility) -

Johannes Kepler University
Linz, Austria
01-2023

Software Engineering -

College of Natural Sciences and Humanities
Uzhhorod, Ukraine
01-2021

Skills

Frontend:
Reactjs, TypeScript, JavaScript, HTML5, CSS3, Ant Design, Responsive Design, React Hooks

Backend:
Nodejs, NestJS, Expressjs, REST APIs, API Integration, JWT Authentication

Databases:
MongoDB, SQL, SQLite, Prisma, Mongoose, JDBC

Desktop & Mobile:
Java, JavaFX, Android Development, C#, ASPNET, WPF, Python

Integrations:
Facebook API Integration, TikTok API Integration

Tools:
Git, GitLab, Postman, Figma

Languages

Slovak
Upper Intermediate
B2
English
Intermediate
B1
German
Elementary
A2
Poland
Intermediate
B1
Ukrainian
Proficient
C2

Timeline

Software Developer

MGID (TrackBoost)
11.2025 - 05.2026

IT Programmer

KDC
01.2024 - 08.2024

Freelance

Freelance
01.2022 - Current

Informatika -

Technická univerzita v Košiciach / Fakulta Elektrotechniky a Informatiky

Computer Science (Erasmus+ Mobility) -

Johannes Kepler University

Software Engineering -

College of Natural Sciences and Humanities
ANNA-ALONA LEHEZA