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Urgent! Senior Frontend Engineer - React.JS (Romania, f / m / d) Job Opening In madrid – Now Hiring Factor Eleven

Senior Frontend Engineer React.JS (Romania, f / m / d)



Job description

YOUR MISSION

We are looking for a highly-skilled Senior Frontend Engineer to join one of our development teams.

In this role, you will be responsible for developing and implementing user interface components using React.js with technologies such as TypeScript, GraphQL, Jest, Cypress, and Vite.

You will also be responsible for testing, profiling, and improving front-end performance, documenting our front-end codebase, mentoring team members, planning tasks, and estimating workloads.

You'll work within a cross-disciplinary team under the Engineering Manager to contribute to our multi-tenant SaaS product.

This is a high-impact role for someone who thrives on elevating engineering standards and driving a forward-thinking, AI-first approach across the organization.

To succeed as a senior frontend engineer, you should have in-depth knowledge of React concepts, excellent front-end coding skills, and a strong understanding of progressive web applications.

Ultimately, a top-class Senior Frontend Engineer should be able to design, plan, and build modern user interface components to enhance application performance and coach other team members.

YOUR PROFILE

  • 6+ years of professional experience in a similar position
  • Proven expert knowledge of TypeScript, JavaScript, CSS, HTML, and front-end languages
  • Quality-focused mindset and deep passion for user experience and interfaces
  • AI-first mindset, embedding AI and automation into product architecture, workflows, and decision-making processes
  • Great knowledge of frontend tools including React.js, Vite, Jest, and Cypress.js
  • Experience with browser-based debugging and performance testing software
  • Familiarity with git, npm, Docker, and Jira
  • Strong troubleshooting skills
  • Good project management skills
  • Extensive experience mentoring teammates respectfully and empathetically

YOUR RESPONSIBILITIES

  • Meeting with the development team to discuss user interface ideas and applications
  • Reviewing application requirements and interface designs
  • Identifying web-based user interactions
  • Developing and implementing highly responsive UI components using React concepts
  • Writing application interface code using TypeScript following React workflows
  • Troubleshooting interface software and debugging application code
  • Developing and implementing front-end architecture to support UI concepts
  • Providing automated unit, e2e, and visual regression tests
  • Monitoring and improving front-end performance
  • Documenting application changes and updates
  • Participating in code and technical design reviews
  • Estimating workloads and reviewing tasks for yourself and others
  • Mentoring team members

WHY US?

Factor Eleven's tech department is an in-house startup responsible for our SaaS product suite offering localized digital advertising to enterprises of all sizes.

We power the engine behind Factor Eleven and aim to elevate our product daily.

We are committed to quality and expanding our platform's capabilities, fostering a top-tier ad-tech environment.

Join our remote team to help move digital localized advertising forward and enjoy the camaraderie, flexibility, and perks of our fully remote operations.

OUR PERKS & BENEFITS

  • Transparent, above-market salaries
  • 100% remote within Europe
  • Clear expectations and regular feedback
  • Flexible work hours and part-time options
  • Be part of a fast-growing, skilled team
  • Relocation and visa support
  • In-person events
  • Home office, co-working, and work-together allowances
  • Personal and professional development fund
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