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Ventrata

Senior Frontend Developer – Svelte Specialist

Ventrata

. **The Challenge: A Ground-Up Redesign on a New Foundation** .

Posted 4/20/2026contractBrno • CzechiaSeniorWebsite

Tech Stack

Tools & technologies
CypressJavaScriptReactSvelteTypeScriptVue.js

About the role

Key responsibilities & impact
  • **The Challenge: A Ground-Up Redesign on a New Foundation**
  • This isn't about tweaking a simple app. Our core product is a powerful, configuration-driven checkout widget with multiple display modes, complex booking flows (such as cross-selling and multi-booking), and a dependent-booking management module. It's a mature, high-quality application, and now it's ready for its next evolution.
  • Our mission is to execute a total redesign. This is more than a facelift; it's a fundamental reimagining of our user flows, component library, and design system, all built upon a modern Svelte 5 foundation.
  • **What You'll Be Building & Transforming**
  • Our checkout widget is a SPA build upon Svelte 5 (migrated from v4), Vite, Typescript, Tailwind, Vitest and Cypress.
  • Your responsibility will be foundational migrations (upgrading Vite, Tailwind, etc.), giving you a unique opportunity to learn the codebase's intricacies. With that foundation in place, you will participate on translating a new, comprehensive Figma design with a great focus on project maintainability and code clarity.
  • As our Senior Frontend Engineer, you will be the primary force for this transformation, working alongside our Tech Lead to build the future of our product.

Requirements

What you’ll need
  • - Expert knowledge of modern JavaScript (ESNext) and TypeScript.
  • - Proven experience building and maintaining complex, large-scale Single Page Applications (SPAs).
  • - Experience with large-scale refactoring and evolving a mature codebase.
  • - Demonstrated ability to work with intricate business rules and user flows.
  • - Deep professional experience with Svelte is a significant advantage. Alternatively, expert-level experience in React or Vue with a demonstrable passion for mastering Svelte.
  • - A pragmatic approach to problem-solving and a love for the craft of frontend development.
  • - Intermediate English proficiency.
  • - Nice-to-have: Backend development experience.
  • **Also, please note that the team is mostly based in the Czech Republic, so we would prefer a candidate from the same time zone.**

Benefits

Comp & perks
  • **What can we offer?**
  • - We are fairly informal about working hours. We want to make sure you like your job and wanna go an extra mile for us.
  • - Unlimited paid holiday days.
  • - Start-up working environment.
  • - WFH or work remotely.
  • - Team buildings and company remote office. Sounds boring? The whole team met in Spain, South Africa, Italy, Portugal, France and this year also in Greece.
  • - We have two office locations: the core team is located in Brno and we have one newly opened office in Lisbon. How does working for a month from Lisbon sound? :)
  • - Young and passionate team - the ‘Ventrata family”
  • - Hardware/ remote setup package.
  • - Competitive salary and regular salary revaluation.
  • - Christmas bonuses.

ATS Keywords

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Hard Skills & Tools
JavaScriptTypeScriptSvelteReactVueViteTailwindVitestCypressSingle Page Applications
Soft Skills
problem-solvingfrontend developmentproject maintainabilitycode claritycommunication