Senior Frontend Developer (React) - Web Wallet

Randstad (Schweiz) AG; Málaga; A distancia; EUR 50.000 - 70.000; Jornada completa

Descripción de la vacante

A leading Web3 company is seeking a Senior Frontend Developer (React) to build high-performance interfaces. In this role, you'll work with cross-functional teams to deliver seamless user experiences. Ideal candidates have over 5 years of frontend experience and expertise in React and JavaScript. This position allows for remote work within the EU.

Formación

• Over 5 years of experience in frontend engineering.
• Strong expertise in React and modern JavaScript/TypeScript.
• Experience with build tools and testing frameworks.
• Passionate about software quality.
• Strong command of English.

Responsabilidades

• Design and implement user-facing features with strong performance.
• Build and maintain React-based interfaces for scalability.
• Collaborate with product and backend teams.
• Optimize applications for speed and accessibility.
• Work within a modern CI/CD pipeline.

Conocimientos

Frontend engineering

React

JavaScript/TypeScript

Micro frontend architectures

DevOps practices

Containerization technologies

Software quality

English proficiency

Herramientas

Bun

Vite

Webpack

Cypress

Selenium

Descripción del empleo

️Title: Senior Frontend Developer (React) - Web Wallet

Department: Engineering

Location: Remote within EU

About Block Labs

Block Labs is a leading force in the Web3 space, incubating, investing in, and accelerating top-tier fintech, crypto and iGaming projects. With a mission to shape the future of decentralized technology, we partner with visionary startups to raise funding, refine product-market fit, and grow their audiences. Our diverse team drives innovation, using deep industry expertise and an extensive network to empower the next wave of blockchain-driven companies. At Block Labs, we’re passionate about turning bold ideas into breakthrough success.

About The Role

As a Senior Frontend Developer, you will help build high-performance, modular and visually engaging interfaces across a range of cutting-edge platforms. You will work within a cross-functional team of engineers, product managers and designers to deliver seamless user experiences across web application. This is a hands-on role with significant influence over architectural choices, component design and frontend tooling.

Key Responsibilities:

• Design and implement user-facing features with strong attention to performance, responsiveness and UX
• Build, maintain and refactor modular React-based interfaces for scalability and reusability
• Collaborate with product and backend teams to define API contracts and feature behavior
• Advocate for clean, testable and maintainable code through peer reviews and documentation
• Optimize applications for speed, cross-browser compatibility and accessibility
• Work within a modern CI/CD pipeline to ship features efficiently and safely
• Contribute to shared design systems or internal tooling as needed

About You:

• You have over 5 years of experience in frontend engineering with a focus on creating high-quality, scalable web applications
• Strong expertise in React and modern JavaScript/TypeScript
• Previous experience with micro frontend architectures is a plus
• Experience with build tools (like Bun, Vite, Webpack) and testing frameworks (such as Cypress or Selenium) is essential
• You have experience in DevOps practices and containerization technologies in cloud environments
• You are passionate about software quality and creating exceptional user experiences
• You have a strong command of both verbal and written English
• Background in fintech, DeFi, or iGaming is a bonus