Senior Frontend Developer (JavaScript, Shopify)

Avomind; Köln; Hybrid; EUR 60.000 - 80.000; Vollzeit

Benefits dieser Stelle

30 days vacation

MacBook Pro

€30/month benefit voucher

Workations

Team events

Zusammenfassung

Avomind, based in Köln, is looking for a Senior Frontend Developer to lead complex A/B tests and make crucial technical decisions in a fast-paced environment. The ideal candidate will have over 4 years of experience in Frontend Development, strong skills in HTML, CSS, JavaScript, and proven expertise in Shopify environments. The role offers a flexible working model with options for on-site, hybrid, or fully remote work, along with generous vacation days, a MacBook Pro, and additional benefits like workations and team events.

Qualifikationen

• 4+ years of experience in Frontend Development at a senior level.
• Strong experience with Shopify, including themes and live environments.
• Proficient in HTML, CSS, and JavaScript.

Aufgaben

• 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.

Kenntnisse

HTML, CSS, JavaScript

Shopify experience

jQuery

Git

Client-facing technical discussions

Mentoring junior developers

AI-assisted development tools

Jobbeschreibung

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

• 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)

• 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