Front-End Developer

For over a decade now, OpenNebula Systems has been building the open source technology that helps organizations around the world to manage their corporate data centers and build Enterprise Clouds with unique, innovative features.

Born back in the day as an open source platform for Private Clouds, OpenNebula is a powerful, but easy-to-use, open source Cloud & Edge Computing Platform whose community includes nowadays leading companies and public agencies in a wide range of industry niches and countries.

If you want to join an established leader in the cloud infrastructure industry and the global open source community, keep reading, because you can now join exceptionally passionate, talented colleagues, and help world´s leading enterprises implement their next-generation edge and cloud strategies. We are hiring!

Come join us in our distributed, fully-remote, international team, where we promote Creativity, Innovation, Collaboration, Open Communication and Iterative Work, and we´re seeking a Full-Stack Developer to work in the development of the OpenNebula open-source cloud management platform and its new strategic project in edge computing

Since 2019, and thanks to the support from the European Commission, OpenNebula Systems is leading the edge computing innovation in Europe, investing heavily in research and development, and playing a key role in the key strategic initiatives of the European Union. https://opennebula.io/innovation/

Job Description

The OpenNebula Systems team is looking for a Front-End Developer to help shape the user experience of our open-source cloud management platform. You will design and build modern, scalable web interfaces that simplify complex infrastructure and virtualization environments for enterprise users worldwide.

As part of a collaborative and fast-moving team, you will have real ownership and impact on the evolution of our product, working closely with engineers across the stack to deliver clean, intuitive, and high-quality user experiences. If you enjoy turning complex technical systems into clean, usable, and elegant user experiences, we’d love to hear from you.

As we are an international team, please submit your CV in English.

Responsibilities

Design, develop, and maintain scalable UI components for the OpenNebula web interface.

Write well-tested, maintainable code with strong test coverage (TDD mindset)

Produce clear and concise technical documentation for UI components and features.

Ensure consistent, high-quality front-end design and layout standards.

Continuously enhance usability and overall user experience.

Stay current with modern web technologies and proactively improve existing components.

Contribute to process and codebase improvements to maintain high software quality.

Experience Required

Academic Background and Certifications

Bachelor’s or Master’s degree in Computer Science, Information Technology, or Engineering.

Professional Experience

2+ years of experience in web development.

Experience developing and maintaining user-facing web applications.

Familiarity with modern development workflows (e.g., GitFlow)

Experience collaborating on software projects and contributing to technical documentation.

Technical Experience

Web technologies experience using React, Redux and Webpack

Use of version control systems: Git

Comfortable working in Linux based development environment: RHEL/AlmaLinux,Ubuntu/Debian

Cypress for testing

Use of Node.js

Experience working with or contributing to open-source software is a plus

Language Skills

Intermediate to Advanced English level (B2 or higher) is required.

Soft Skills & Collaboration

Comfortable contributing beyond pure UI development when needed (e.g., collaborating on API integrations or platform-level improvements).

Knowledge of virtualization and familiarity with OpenNebula or similar platforms is a strong plus.

Strong customer service mindset, with a focus on responsiveness and user satisfaction.

Clear communication and documentation skills, async collaboration and visibility of work. in technical writing and collaboration and visibility of work.

Self-management and accountability with ability to work independently, manage time, and take ownership of tasks and deadlines.

Technical autonomy and tool proficiency with confidence in using Git, CI/CD, remote collaboration tools , and solving problems without direct supervision.

What's In It for Me?

Some of our benefits and perks vary depending on location and employment type, but we are proud to provide employees with the following;

Competitive compensation package and Flexible Remuneration Options: Meals, Transport, Nursery/Childcare…

Customized workstation (macOS, Windows, Linux any distro is welcome)

Private Health Insurance

6 hours workday on Fridays and everyday during August

PTO: Holidays, Personal Time, Sick Time, Parental leave.

All Remote company with bright HQ centrally located in Madrid, and offices in Boston (USA) and Brno (Czech Republic)

Healthy Work-Life Balance : We encourage the right for Digital Disconnecting and promote harmony between employees personal and professional lives

Flexible hiring options: Full Time/Part Time, Employee (Spain/Usa) / Contractor (other locations)

We are building an awesome, Engineering First Culture and your opinion matters: Thrive in the high-energy environment of a young company where openness, collaboration, risk-taking, and continuous growth are valued

Be exposed to a broad technology ecosystem. We encourage learning and researching new technologies and methods as part of your everyday duties