Shopify Developer (CRO)

Shopify Developer — CRO Focus

Trtl · UK ecommerce brand · Remote · Full-time

Stack: Shopify (Liquid, theme architecture, Storefront/Admin APIs) · JavaScript/TypeScript · HTML/CSS/SCSS · Figma ·GA4/GTM · Klaviyo · Meta & TikTok pixels/integrations · A/B testing tools

Location: Fully remote · Long-term, full-time · Overlap with UK hours (we're in Glasgow; EU time zones ideal) · English:upper-intermediate+ for daily written and spoken communication

About us

Trtl is a Scottish travel accessories brand best known for the Trtl Pillow — over 3 million units sold across 100+ countries. We sell direct-to-consumer on Shopify alongside Amazon and a fast-growing TikTok Shop. You’d work directly with the founder/CEO and our marketing team, with real ownership of the site — not through layers of account managers.

The role

We’re bringing our website development in-house and want one person to own it: a developer who thinks in conversion rates, not just clean code. You’ll set and run the site’s experimentation roadmap, build what you design, and be measured on conversion rate, AOV, and revenue per session.

What you’ll do

• Design, build, and run A/B tests across product pages, cart and checkout upsells, and page redesigns — clear hypothesis in, clean read out

• Build landing pages matched to the angle, pain point, and topic of the ads driving traffic to them, so message match lifts conversion

• Own CRO on our email/SMS welcome pop-up (offer mechanics, design, build, iteration) — growing the list without hurting on-site conversion

• Build upsell and cross-sell moments across our range (sleep masks, packing pods, flasks) in cart, checkout, and post-purchase

• Implement and maintain the tracking and marketing stack from the dev side: Meta, TikTok, Klaviyo, GA4/GTM so campaigns and tests can be read cleanly
• Keep the theme fast, stable, and maintainable; work in Figma with our designers, or design pages yourself when speed matters

• Run a structured process: scoping and estimates, a visible testing pipeline, Git discipline

Requirements

• 3+ years of Shopify development: Liquid, theme customisation and builds from scratch, app ecosystem, APIs
• Strong frontend fundamentals: modern JavaScript/TypeScript, responsive HTML/CSS/SCSS; React is a plus
• Real CRO experience you can evidence: audits you’ve run, tests you’ve shipped, what they moved (we'll ask for specifics — e.g. how many hypotheses you’ve tested and your validation rate)

• Comfortable in Figma — able to work in design files, brief designers, and produce credible layouts yourself
• Hands-on integration experience with at least some of: Klaviyo, Meta pixel/CAPI, TikTok, GA4/GTM
• Understanding of paid traffic and why ad-to-landing-page message match matters
• Self-managing: you scope your own work, communicate proactively in async written English, and ship on a steady cadence

Nice to have

• Shopify Plus experience (checkout extensibility, native A/B testing/rollouts)
• WordPress or Webflow for standalone landing pages
• Headless/Hydrogen experience
• Past agency experience serving US/UK DTC brands

What we offer

• Direct access to the founder and marketing team — decisions in hours, not weeks
• One brand, done deeply, instead of juggling ten client accounts
• Your tests shipped and read every month, with the data to prove your impact
• Long-term stability with a profitable, growing brand

How to apply

Send a short note and CV with: (1) two Shopify stores you’ve worked on and what you did, (2) one A/B test you’re proud of — hypothesis, result, and what you learned, and (3) your favourite CRO or testing tool and why. Applications without these three things won’t be reviewed.