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Principal UI Engineer (Shopify)

IDHL Group • 🌐 In Person

In Person Posted 3 days, 15 hours ago

Job Description

Who are IDHL?

At IDHL, we’re more than a digital agency, we’re a strategic partner to ambitious brands, helping them accelerate growth in the digital economy.

Our expertise is delivered through three core divisions: Performance, Web \& eCommerce, and Intelligence – all working closely together to create impact across channels.

We’re also home to Fostr, a Shopify Plus agency for luxury and lifestyle brands, and The MTM Agency, specialists in integrated marketing and audience engagement.

What connects it all is our focus on outcomes, not just outputs. We back each other, take pride in what we do, and make sure the way we work works for everyone.

Key Highlights

Lead the technical delivery of complex Shopify projects across themes, apps, checkout, and headless builds

Own architecture decisions, code quality, performance, and long-term maintainability

Act as the go-to technical authority and escalation point for teams and clients

Drive best practices in JavaScript/TypeScript, OOP, testing, and documentation

Shape and improve development tooling, CI/CD pipelines, and local environments

Mentor developers and set high standards for delivery across the team

Partner closely with PMs, designers, and clients to deliver exceptional ecommerce solutions

Work with cutting-edge Shopify features including GraphQL, Markets, Hydrogen/Oxygen, and checkout customisation

Ideal For Someone Who

Is an expert in Shopify development and ecommerce architecture

Enjoys solving complex technical challenges and leading by example

Cares deeply about performance, code quality, and scalability

Thrives in a client-facing, collaborative agency environment

Wants real ownership, influence, and progression

Full Job Spec Available Upon Request

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