Senior Frontend Developer (JavaScript, Shopify)
Location: Cologne, North Rhine-Westphalia, Germany
Workplace: hybrid
Employment Type: full
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
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