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Senior Frontend Developer (JavaScript, Shopify)

Avomind · Cologne, Germany · Hybrid

  • Office in Cologne
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Description

We’re working with a data-driven e-commerce growth agency and they’re looking for a Senior Frontend Developer.

About the Company:

  • Specialized in A/B testing and conversion rate optimization
  • Focus on scaling Shopify-based e-commerce brands
  • Culture built on: Ownership, Respect, High Standards, and Team Spirit

What You’ll Do

  • Develop and implement complex A/B tests in live Shopify environments
  • Take ownership of the frontend domain and technical decisions
  • Mentor and support junior developers
  • Provide accurate effort estimations and contribute to planning
  • Ensure high QA standards across releases
  • Communicate directly with clients on technical topics

Ideal Profile

  • Proven Shopify experience (beyond basic landing pages)
  • Confident in client-facing technical discussions
  • Able to lead, mentor, and make decisions independently
  • Proactive and comfortable in a fast-paced environment

Requirements

  • 4+ years experience in Frontend Development (Senior level)
  • Strong skills in HTML, CSS, JavaScript
  • Solid experience with Shopify (themes, sections, live environments)
  • Working knowledge of jQuery and Git
  • Experience delivering production-ready code for real clients
  • Comfortable owning timelines and managing scope
  • Interest in AI-assisted development (e.g. Copilot, Cursor)

Benefits

  • Flexible working model: Office, hybrid, or fully remote
  • 30 days vacation + 3 additional regional holidays
  • MacBook Pro + professional setup from day one
  • Extras: Workations, team events, €30/month benefit voucher