Shopify Developer

Glass Atlas is the digital commerce agency of choice for transformation and growth, aiming to be the leading partner for world-class brands. We drive innovation and excellence across performance marketing, commerce engineering, and creative practices. Powered by a collaborative team of 170+ specialists across performance and commerce technology, our growth is built on strong expertise and a shared vision.

Culture is at the heart of everything we do, which is why we keep it simple with a single guiding value—our True North: We do the right thing. This core principle guides how we work, make decisions, and treat our customers, partners, and each other every single day. We believe that doing the right thing fosters transparency, excellence, and a supportive environment where everyone can thrive.

About the role

Glass Atlas are looking for an experienced full-stack Shopify Developer to join our Commerce Technology team. You will work across a range of ecommerce clients, designing, building, launching and continually improving high-quality Shopify and Shopify Plus solutions. This is broader than a storefront or theme-development role: you will work across customer-facing experiences, server-side services, APIs, integrations and data flows, helping to understand client requirements, recommend pragmatic technical approaches and take responsibility for the quality of what we deliver.

Key responsibilities

The Shopify Developer is responsible for delivering robust, maintainable and high-performing solutions across the full Shopify technology stack. The role combines hands-on frontend and backend development with technical discovery, estimation, API and integration design, data modelling, quality assurance and production support. You will collaborate with developers, technical leads, designers, delivery managers and clients to turn commercial and functional requirements into effective Shopify solutions.

The following should give you a flavour of how you will be spending your time. Your focus will shift from week-to-week, but it gives an idea of what is expected from the role:

Full-Stack Shopify Development

• Build and maintain Shopify and Shopify Plus solutions across storefronts, custom applications, services and integrations.

• Develop bespoke themes and extend existing themes using Liquid, JSON templates, sections, blocks, HTML, CSS and JavaScript, while contributing to backend services where required.

• Translate designs and functional requirements into responsive, accessible and performant ecommerce experiences.

• Create flexible, reusable frontend components and backend services that are well structured, testable and maintainable.

Shopify Solutions & Integrations

• Design and build robust integrations between Shopify and third-party platforms using REST, GraphQL, webhooks and asynchronous data flows.

• Work confidently with Shopify data and APIs covering products, collections, customers, orders, metafields and metaobjects, including authentication, data transformation and error handling.

• Assess when a Shopify-native feature, established app or bespoke solution is the most appropriate approach.

• Implement Shopify Functions, Checkout Extensibility, Shopify Flow and Markets where appropriate.

• Support migrations and replatforming projects onto Shopify, including data, content and integration considerations.

Quality, Delivery & Collaboration

• Improve storefront performance, accessibility, SEO and overall technical quality.

• Use Git, Shopify CLI and agreed development and deployment workflows consistently.

• Review code, contribute to technical standards and help other developers deliver maintainable solutions.

• Estimate development work, contribute to technical discovery and communicate risks, dependencies and options clearly.

Live Support & Client Engagement

• Diagnose and resolve issues across existing Shopify implementations and live ecommerce sites.

• Support projects through development, QA, launch and post-launch optimisation.

• Work directly with clients where appropriate to understand requirements and explain technical solutions in plain language.

Platform Development & Continuous Improvement

• Keep up to date with changes to Shopify and recommend capabilities that could benefit our clients.

• Contribute to shared patterns, tooling, documentation and development practices across the Commerce Technology team.

• Build or extend custom Shopify applications and explore headless commerce, server-side services and enterprise integrations where appropriate.

• Take ownership of delivered work and help ensure it remains understandable, testable and maintainable by others.

Knowledge, Skills & Experience

Here’s an idea of the experience we’re looking for, along with additional knowledge that would be useful:

• Commercial experience developing Shopify stores, ideally within an ecommerce agency or consultancy.

• Strong JavaScript, Liquid, HTML and CSS skills, with experience spanning both frontend development and backend or server-side application development.

• Experience with Shopify Plus, custom application development, third-party integrations, REST or GraphQL APIs, webhooks and common authentication patterns.

• A good understanding of ecommerce principles, responsive development, web performance, SEO and accessibility.

• Experience using Git in a collaborative team, confidence working with Shopify CLI and familiarity with testing, deployment and CI/CD practices.

• The ability to diagnose problems in existing implementations, estimate your own work and take responsibility for delivery.

• Strong communication skills and confidence discussing technical subjects with technical and non-technical colleagues and clients.

• Experience with Ruby, particularly Ruby on Rails, would be beneficial. Experience with some of Shopify Functions, Checkout Extensibility, Flow, GraphQL, React, TypeScript, Node.js, Hydrogen, automated testing, cloud services or enterprise integrations would also be advantageous.

Benefits

• 25 days base holiday + bank holidays + your birthday day off!

• Volunteer / Charity day

• Loyalty scheme - 1 day holiday per year for up to 5 years!

• Long service bonus

• Access to Manchester-based office & Hubble co-working passes (across UK and beyond)

• Flexible working policy

• £1,000 referral bonus - Recommend a friend for a job!

• Employee Assistance Programme

• Vitality Private Healthcare

• Eyecare Vouchers

• Company perks & discounts platform

• Regular social events and company get togethers

• Enhanced Maternity and Paternity policies

• Company wellness initiatives

• Training & development plans

• Relaxed and friendly teams