Olena

Olena Jerdeva
Frontend developer
[відкрити контакти](див. вище в блоці «контактна інформація») [відкрити контакти](див. вище в блоці «контактна інформація») Ukraine LinkedIn Telegram GitHub

SUMMARY
Frontend Developer with commercial experience in fintech web applications and media buying. Core stack:
JavaScript, TypeScript, React, Redux, HTML, and CSS. Strengths include reusable UI development, REST API
integration, business logic, and troubleshooting production issues. Additional backend experience with Node.js, PHP,
and PostgreSQL. Regularly assumed acting team lead responsibilities, coordinating daily work and resolving cross-
team issues.

TECH SKILLS
JavaScript | TypeScript | Redux | React | HTML | CSS | Responsive Design | Python | Next.js | REST API
| Git | Node.js | PHP | HTTP | MongoDB | PostgreSQL | Docker | GitHub | GitLab | Google Gemini |
Cursor | Claude Code

WORK EXPERIENCE
Frontend Developer | Red Monkey | FinTech 2026 - Present
Developed and maintained a commercial fintech platform for payment processing, merchant management,
and financial reporting.
Developed new features and maintained existing functionality in a large enterprise application.
Built complex administrative interfaces and reusable UI components.
Integrated REST APIs and collaborated closely with .NET backend developers.
Implemented advanced filtering, sorting, pagination, search, and export functionality.
Developed reporting modules and financial dashboards.
Maintained a large legacy codebase, fixed production issues, and participated in code reviews.
Used GitHub and Gitea for version control and collaborative development.

Frontend Developer | ByPass 2025 - 2026
Developed and maintained landing pages using HTML, CSS, JavaScript and PHP, contributing to team delivery
of up to 8 landing pages per day.
Collaborated with support to investigate and resolve production issues, including UI bugs and JavaScript/PHP
script failures.
Regularly covered team lead responsibilities during the lead’s absences, coordinating daily work, resolving
cross-team issues, and handling operational decisions.
Helped create a centralized landing page inventory and expand internal documentation, making project
information and workflows accessible to the team.
Used Cursor and Google Gemini to assist with development and debugging.

Full-Stack Developer | CGS-team | FinTech 2024 - 2025
Developed a full-featured web application using React, Redux, TypeScript, Node.js, Next.js and Python.
Worked with PostgreSQL: database schema design, queries, and optimization.
Built RESTful APIs and tested endpoints using Postman.
Used Docker for containerizing services
Collaborated via Git/GitHub, actively participated in code reviews.
Met project deadlines, submitted regular progress reports, and communicated closely with the team lead

EDUCATION
IT School GoIT
Full Stack Developer / 2023

V. N. Karazin Kharkiv National University
Faculty of Economics / Management of Organizations / 2016 - 2021

LANGUAGES

English - B1 Ukrainian - Native Russian - Native