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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 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, currently I'm exploring Figma MCP and working towards AWS certification. I value teamwork, ownership, and continuous improvement, and I'm happiest in environments where quality and curiosity are encouraged.

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

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 clinical trial recruitment site with configurable questionnaire and form submission, backed by a reusable component library. I also contributed to an internal recruitment system with multiple roles and permissions, integrating an in-house API where sensitive data handling and compliance were critical. Accessibility and UI/UX remained a constant focus. Alongside front-end work, I collaborated with designers on a shared design system and worked closely with back-end developers on data structuring.

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

Email Campaign Builder

Web App for speeding up email template creation and review process (desktop only)

Demo →GitHub →Read more →
Email Campaign Builder
  • A multi-client MJML email campaign builder that generates HTML emails from templates and data.
  • Speeds collaboration by giving developers repeatable builds and giving PMs consistent previews for reviews.
  • Key features: Multi-client/campaign structure, localization support, shared component library, preview UI, pdf and image generation.
JavaScript  •HTML5  •CSS  •MJML  •Express.js  •Node.js