Frontend Developer

Polina Filina

Frontend Developer with 2.5 years of commercial experience building and maintaining production web applications. I also build fullstack applications using React, Next.js, TypeScript, Node.js, and PostgreSQL.

  • React
  • Next.js
  • TypeScript
  • JavaScript
  • Responsive UI
View selected work Resume

South Korea · Open to remote opportunities

01 / About

Portrait of Polina Filina

Hi, I'm Polina.

I'm a frontend developer based in South Korea with a background in production web development and a growing focus on fullstack applications.

At Mnovation, I contributed to web platforms for Korea Education Group, working on existing services, website renewals, responsive interfaces, interactive features, and ongoing improvements. My role involved collaborating with cross-functional teams, solving UI and compatibility issues, and helping onboard and mentor new developers.

Beyond my commercial experience, I develop fullstack web and mobile applications using React, Next.js, TypeScript, Node.js, and PostgreSQL. I enjoy building reliable, maintainable products and expanding my skills across both frontend and backend development.

02 / Skills

Technologies I work with

Frontend

  • JavaScript
  • TypeScript
  • React
  • Next.js
  • React Native
  • Redux Toolkit
  • HTML5
  • CSS3
  • SCSS
  • Tailwind CSS
  • Responsive Design

Backend & Data

  • Node.js
  • Express
  • REST APIs
  • PostgreSQL
  • Prisma

Tools & Workflow

  • Git
  • GitHub
  • Figma
  • Webpack
  • Gulp
  • Adobe Photoshop

03 / Experience

March 2024 — August 2026

2 years 6 months

Mnovation

Frontend Developer

Seoul, South Korea

Worked on the development, maintenance, and continuous improvement of production websites and web services for Korea Education Group, contributing to 12 academy websites built with HTML, CSS/SCSS, JavaScript, and Classic ASP.

Key responsibilities & contributions

  • Production Development & Maintenance

    Developed and maintained frontend functionality across multiple live websites, implementing updates, resolving bugs, and ensuring compatibility with existing systems.

  • UI Development & Website Modernization

    Contributed to website renewals and redesigns, building responsive desktop and mobile interfaces from Figma designs and improving existing user experiences.

  • JavaScript & Interactive Features

    Implemented interactive UI elements, animations, reusable interface patterns, and client-side functionality using JavaScript and frontend libraries.

  • Cross-Browser & Responsive Optimization

    Investigated and resolved layout inconsistencies, mobile usability issues, and browser-specific bugs across production environments.

  • Cross-Functional Collaboration

    Worked with designers, backend developers, and marketers to integrate new functionality, implement design updates, and support business requirements.

  • Mentoring & Knowledge Sharing

    Supported the onboarding of a new frontend developer and an intern, providing guidance on implementation approaches and code quality.

Selected commercial work

04 / Work

Open a stack to see the projects. Click a project title to open the live version when one exists. Some hosted apps can take up to a minute to wake up.

  • Issue Tracker

    A full-stack issue-tracking application with a dashboard, filters, markdown tickets and authentication.

    Next.js · TypeScript · Prisma · PostgreSQL · NextAuth · Zod · React Hook Form · Tailwind CSS · Radix UI · Vercel

    GitHub repository

  • Filin54

    A public website and admin panel for a building-materials business: catalog, contact requests, and owner tools for clients and price lists.

    Next.js · TypeScript · PostgreSQL · Tailwind CSS · Resend · JWT · Zod · React Hook Form · Cursor · Vercel

    GitHub repository

05 / Contact

Have a project, role or idea?

Let’s build
something.

I’m currently open to remote opportunities. Feel free to reach out.