Jana Hatasova

Web Developer

I build scalable, accessible, high-performance web applications and am open to front-end roles as well as opportunities to develop my back-end skills.

About

I'm a a front-end-leaning web developer who enjoys turning ideas and designs into thoughtful, well-crafted user experiences. I like working at the intersection of design and engineering, where details, usability, and clarity really matter.

Most of my experience comes from building reusable components and design systems, improving accessibility and performance, and collaborating closely with designers and developers. I care about clean, readable code and about building things that are easy to maintain and genuinely nice to use.

I'm naturally curious and enjoy learning new tools and technologies, especially around back-end and DevOps. I value teamwork, ownership, and continuous improvement, and I'm happiest in environments where quality and curiosity are encouraged.

Experience

Havas Faze

Jul 2022 - Nov 2025

Web Developer

At Havas Faze, I took on more ownership while working on larger, more complex applications. I helped build a scalable, multilingual white-label platform and a reusable component library, and contributed to an internal clinical trial recruitment system with multiple user roles and permissions. Alongside front-end work, I collaborated closely with designers on a shared design system and gradually expanded into back-end and DevOps tasks, including internal tooling and CI/CD improvements.

React  •Next.js  •Gatsby  •TypeScript  •MDX  •Storybook  •Material UI

Havas Lynx

Aug 2021 - Jun 2022

Junior Web Developer

At Havas Lynx, I worked on a range of client-facing projects, contributing to React-based websites, campaign emails, and digital assets. This role helped me strengthen my front-end foundations, improve accessibility and UI/UX, and get comfortable working across different formats and tight timelines.

React  •MJML  •Styled Components  •CSS  •HTML5  •GWD  •Litmus
View Resume

Projects

Emails builder internal tool

App for speeding up email template creation and review process

Emails builder internal tool
  • A configurable form engine built with React, TypeScript, and SCSS.
  • Supports text, checkbox, and multi-select fields with validation, conditional logic, and error scrolling.
  • Documented in Storybook and packaged for reuse.
React  •TypeScript  •Storybook  •SCSS  •Rollup

Portfolio Website v1

My first version of personal portfolio website

Portfolio Website v1
  • A white-label marketing website template built with Next.js for performance, accessibility, and localisation.
  • Includes multi-language support, analytics integration, and theming via design tokens.
HTML5  •JavaScript  •CSS

Skills

Languages & Frameworks

React  •Next.js  •Gatsby  •TypeScript  •JavaScript (ES6+)  •MDX  •Storybook  •HTML5

Styling & UI

SCSS  •Tailwind CSS  •Styled Components  •Material UI  •Figma  •Design Systems  •CSS  •CSS Modules

Tools & DevOps

Jest  •React Testing Library  •AWS (S3, CloudFront, Lambda)  •GitLab CI/CD  •Gitlab  •Github  •GIT