Front-End Developer – Shopify Plus & Performance

Oner Active; Greater London; Hybrid; GBP 45,000 - 65,000; Full time

Benefits offered by this job

25 days annual leave + bank holidays

Pension scheme with employer match

Discounts on Oner Active products

Private Healthcare with Vitality

Wellness allowance

Discretionary annual bonus

Maternity & paternity policies

Startup culture with mentoring

Team events

Office snacks and drinks

Dog-friendly office

Job summary

Oner Active in London seeks a talented Front-End Developer to build, optimise, and maintain our Shopify Plus estate. You will translate designs into fast, responsive storefronts and support our trading calendar with high-quality code.

Reporting into the Head of Development, you'll collaborate with Digital Trade, Marketing, and E‑commerce teams, driving improvements and embracing new technologies as the team scales.

Qualifications

• Strong knowledge of HTML/CSS/JS with modern tooling and responsive design.
• Proven experience building Shopify storefronts using Liquid templates.
• Experience optimizing performance and Core Web Vitals.
• Ability to translate designs into pixel-accurate UI across devices.

Responsibilities

• Develop and customize Shopify themes for a polished storefront across Shopify Plus.
• Translate designs into functional, reusable UI with cross-browser compatibility.
• Support collection launches, update on-site content, campaigns and landing pages.
• Implement same-day updates to respond to trading needs.
• Focus on front-end performance, speed, and scalability.
• Apply SEO best practices to improve traffic and engagement.
• Collaborate with Head of Development and other teams to enhance site functionality.
• Build reusable components and patterns for faster future launches.
• Suggest and implement features based on user feedback and market trends.

Skills

HTML & CSS

JavaScript

Tailwind CSS

Shopify

Liquid

Responsive design

Web animations

SEO basics

Problem solving

Teamwork

Tools

Git

Job description

Oner Active in London seeks a talented Front-End Developer to build, optimise, and maintain our Shopify Plus estate. You will translate designs into fast, responsive storefronts and support our trading calendar with high-quality code.

Reporting into the Head of Development, you'll collaborate with Digital Trade, Marketing, and E‑commerce teams, driving improvements and embracing new technologies as the team scales.