Senior Frontend Developer – Svelte Specialist

Ventrata

Senior Frontend Developer transforming checkout widget using Svelte 5 for Ventrata's ticketing platform. Leading redesign efforts and collaborating with tech teams for innovative user experiences.

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

✓ Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

JavaScriptTypeScriptSvelteReactVueViteTailwindVitestCypressSingle Page Applications

Soft Skills

problem-solvingfrontend developmentproject maintainabilitycode claritycommunication