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