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# Mid- Level Frontend Engineer (Next.Js / Typescript)

- **Company:** Quanta Tech Systems
- **Location:** Madrid, Spain (Remote available)
- **Salary:** €12,000.0 - €18,000.0
- **Contract:** Permanent contract
- **Skills:** JIRA, Databases, Svelte, Next.js, TypeScript, WebSocket, Vue.js, AngularJS, Real Time Data, Front End Software Development
- **Published:** August 19, 2026
- **Apply:** https://www.buscojobs.com.es/mid-level-frontend-engineer-next-js-typescript-en-alcobendas-ID-367857588

## About the Role

In this role, you will take full ownership of frontend delivery, develop real-time trading interfaces, and independently manage your workflow.Key Requirements2+ years of commercial, production-level experience with Next.Js.Hands-on experience with at least one additional framework (Vue, Angular, Svelte).
Strong proficiency in TypeScript.Language: Fluent in Russian or Ukrainian (primary team communication languages).
Self-Management: Proven ability to independently break down, estimate, and execute Jira tasks.Proactive Ownership: Accurate self-estimation with a track record of flagging potential delays early.Location Eligibility: Willingness to relocate to Madrid.
Candidates must not be located in or working from Russia or Belarus.Industry Experience: Background in Fintech, Crypto Exchanges, Banking, or Payment Systems.Technical Skills: Experience with WebSockets / real-time data interfaces and working knowledge of databases.

## Description

Location: Madrid, Spain (On-site; remote start available with relocation plan)Project: UEX (Cryptocurrency Exchange)Compensation: $1,000 - $1,500 / monthAbout the RoleWe are seeking two Mid- Level Frontend Developers to join our core engineering team building UEX, a high-performance cryptocurrency exchange.In this role, you will take full ownership of frontend delivery, develop real-time trading interfaces, and independently manage your workflow.Key Requirements2+ years of commercial, production-level experience with Next.Js.Hands-on experience with at least one additional framework (Vue, Angular, Svelte).Strong proficiency in TypeScript.Language: Fluent in Russian or Ukrainian (primary team communication languages).Self-Management: Proven ability to independently break down, estimate, and execute Jira tasks.Proactive Ownership: Accurate self-estimation with a track record of flagging potential delays early.Location Eligibility: Willingness to relocate to Madrid.Candidates must not be located in or working from Russia or Belarus.Industry Experience: Background in Fintech, Crypto Exchanges, Banking, or Payment Systems.Technical Skills: Experience with WebSockets / real-time data interfaces and working knowledge of databases.


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