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Senior Frontend Engineer - React.JS; Germany

Job in Germany, Ohio, USA
Listing for: F11
Full Time position
Listed on 2025-12-01
Job specializations:
  • Software Development
    Web Developer, Front End Developer, Software Engineer, React.js
Job Description & How to Apply Below
Position: Senior Frontend Engineer - React.JS (Germany, f/m/d)
Location: Germany

4 weeks ago Be among the first 25 applicants

Overview

We are looking for a highly-skilled Senior Frontend Engineer to join one of our development teams. In this role, you will develop and implement user interface components using React.js, Type Script, Graph

QL, Jest, Cypress and Vite as we build the future of AI-powered digital advertising. You will also test, profile and improve front-end performance, document the codebase, mentor teammates, plan tasks and estimate 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 need in‑depth knowledge of React concepts, excellent front‑end coding skills and a strong understanding of progressive web applications. Ultimately, you should design, plan and build modern UI components to enhance performance and coach teammates to achieve the same.

Profile & Requirements
  • 6+ years of professional experience in a similar position
  • Expert knowledge of Type Script, JavaScript, CSS, HTML and front‑end languages
  • Quality‑focused mindset with a deep passion for user experience and interfaces
  • AI‑first mindset; embed AI and automation into product architecture, workflows and decision‑making
  • Great knowledge of common front‑end tools including React.js, Vite, Jest and Cypress.js
  • Experience with browser‑based debugging and performance testing software
  • Excellent familiarity with git, npm, Docker and Jira
  • Strong troubleshooting skills
  • Good project management skills
  • Extensive experience mentoring teammates in a respectful, empathic manner
Responsibilities
  • Meet with the development team to discuss UI ideas and applications
  • Review application requirements and interface designs
  • Identify web‑based user interactions
  • Develop and implement highly responsive UI components using React concepts
  • Write application interface code using Type Script following React.js workflows
  • Troubleshoot interface software and debug application codes
  • Develop and implement front‑end architecture to support UI concepts
  • Provide automated unit, e2e and visual regression tests
  • Monitor and improve front‑end performance
  • Document application changes and develop updates
  • Participate in code and technical design reviews
  • Write and review tasks and estimate workloads for yourself and others
  • Provide mentorship to team members
Benefits

Factor Eleven's tech department is an in‑house tech start‑up/scale‑up and responsible for our SaaS product suite, offering localized digital advertising to enterprises of all sizes. We power the engine upon which Factor Eleven is built and continually elevate our platform’s capabilities and our engineering and product organization.

Join our amazing team on a mission to advance digital localized advertising and enjoy the freedom, camaraderie 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
  • Be part of a fast‑growing, highly‑skilled team
  • In‑person department and company events
  • Home office, co‑working space and work‑together allowance
  • Personal and professional development fund
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Position Requirements
10+ Years work experience
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