Senior Frontend Developer - €45.000 - €55.000 A Year

Wasmer
Madrid, Spain
17 days ago
Apply on www.buscojobs.com.es
Prepare application

Role details

Contract type
Permanent contract
Employment type
Full-time (> 32 hours)
Experience required
5 years minimum
Compensation
€45,000.0 - €55,000.0
Working hours
Regular working hours
Languages
English

Tech stack

Java (Programming Language) JavaScript (Programming Language) Computing Platforms C++ (Programming Language) Cascading Style Sheets (CSS) Cloud Computing Software Quality Software Design Patterns Model View ViewModel Node.Js Open Source Technology Software Architecture
+12 more
Next.js Software Engineering TypeScript Rust (Programming Language) Tailwind ReactJS Information Technology Codebase Graphql Front End Software Development Multiaccess Edge Computing Golang

Job description

About The Role We are seeking a skilled frontend developer with industrial-strength software engineering skills to help us build the Wasmer website.About Us At Wasmer, we work on the software that will power the next generation of computing platforms for local, cloud, and edge applications using WebAssembly.Similar to how Node.Js enables server-side JavaScript, we enable server-side WebAssembly for all supported languages like C/C++, Java, Go, Rust, and many others.Our mission is to make software universally available.We are committed to the open-source community and strive to contribute to developers and companies worldwide to help make Wasmer and WebAssembly a universal standard.About You You are a highly technical and accomplished frontend developer and want to work on the software that will power the next generation of Cloud and Edge Computing platforms using WebAssembly.What You Will Do Develop efficient and reusable UI components within our Design System Consistently deliver high-quality code Facilitate discussions that encourage a healthy conversation about technology Identify and resolve performance and scalability issues Push the needle forward for the team to increase code quality, code maintainability, and team productivity.What You Need Proficiency in JavaScript, TypeScript, React, NextJS, GraphQL, Relay, Tailwind, CSS Modules Strong communication skills (ENGLISH) Teamwork skills Experience interacting with technical customers and customer engineering teams A positive and respectful attitude.Strong computer science fundamentals and good knowledge of various design patterns such as MVVM, MVP, etc.Your Qualifications 5+ years of professional development experience Demonstrated ability to dive into and work with large codebases Strong abstraction, algorithmic, and software architecture skills BS/MS in Computer Science (nice to have) Why Join Us?You want to work for a start-up focused on solving real problems with an open-source community-first approach for building a business.Benefits Competitive salary (45K - 55K €) + Equity Employee contract (“contrato indefinido”) Hybrid work policy (4 days onsite, 1 day remote) per week Vacation policy : 23 days / year + Extra remote-work days: 10 days / year Monthly fitness stipend Monthly support for open-source contributions

Requirements

About The Role We are seeking a skilled frontend developer with industrial-strength software engineering skills to help us build the Wasmer website., What You Will Do Develop efficient and reusable UI components within our Design System Consistently deliver high-quality code Facilitate discussions that encourage a healthy conversation about technology Identify and resolve performance and scalability issues Push the needle forward for the team to increase code quality, code maintainability, and team productivity. What You Need Proficiency in JavaScript, TypeScript, React, NextJS, GraphQL, Relay, Tailwind, CSS Modules Strong communication skills (ENGLISH) Teamwork skills Experience interacting with technical customers and customer engineering teams A positive and respectful attitude. Strong computer science fundamentals and good knowledge of various design patterns such as MVVM, MVP, etc. Your Qualifications 5+ years of professional development experience Demonstrated ability to dive into and work with large codebases Strong abstraction, algorithmic, and software architecture skills BS/MS in Computer Science (nice to have) Why Join Us? You want to work for a start-up focused on solving real problems with an open-source community-first approach for building a business.

Benefits & conditions

Benefits Competitive salary (45K - 55K €) + Equity Employee contract (“contrato indefinido”) Hybrid work policy (4 days onsite, 1 day remote) per week Vacation policy : 23 days / year + Extra remote-work days: 10 days / year Monthly fitness stipend Monthly support for open-source contributions

About the company

About Us At Wasmer, we work on the software that will power the next generation of computing platforms for local, cloud, and edge applications using WebAssembly. Similar to how Node.Js enables server-side JavaScript, we enable server-side WebAssembly for all supported languages like C/C++, Java, Go, Rust, and many others. Our mission is to make software universally available. We are committed to the open-source community and strive to contribute to developers and companies worldwide to help make Wasmer and WebAssembly a universal standard. About You You are a highly technical and accomplished frontend developer and want to work on the software that will power the next generation of Cloud and Edge Computing platforms using WebAssembly.

Apply for this position

This job is hosted externally. Click below to view the full posting and apply.

Apply on www.buscojobs.com.es
Prepare application

Good distractions

Talks and stories from around this role — technically off-topic, practically not.

2:35 min

Navigating framework adoption and specialized frontend hiring constraints

Chris Heilmann +2 · LIVE

1:08 min

Building solutions with open source GoLang infrastructure tools

Jad Wahab · LIVE

2:52 min

Generating APIs with the Neo4j GraphQL library

William Lyon · LIVE

1:21 min

Exploring the target application for front end tests

Anna Mcdougall · JS Congress

2:14 min

Discussing daily roles in frontend and full stack development

Chris Heilmann +1 · LIVE

6:16 min

Event-driven Golang backend architecture and cloud deployment

Irina Branovic Irina Branovic · World Congress 2026 Europe

Videos

See all

Related articles

See all