Open to full-time remote roles

    I build Shopify storefronts, then run the tests that make them sell.

    Senior Shopify and CRO developer. Seven years building product pages, custom Shopify apps and checkout funnels for DTC brands.

    Book a 15-minute call (opens in a new tab)View the résumé
    Cristian Daron
    Cristian Daron, senior Shopify and CRO developer

    Local time

    Philippines · UTC+8

    Most recently

    Incubator Lab · Puur Smile

    Open to:Senior Shopify DeveloperEcommerce / CRO LeadFrontend Developer, DTC

    Selected work

    Stores and apps I have shipped.

    Live storefronts and the apps behind them. Each card opens the case study.
    View all projects
    puursmile.com
    Puur Smile storefront

    +24.89%

    conversion, A/B test

    Most recent · Product pages, apps and testing

    Puur Smile

    Product pages rebuilt around one offer, three custom Shopify apps, and a testing programme behind all of it.

    • 192

      pages and pre-landers

    • 3

      custom Shopify apps

    • 3 + 3

      upsells and downsells

    Read the case studyVisit the live store (opens in a new tab)
    • drommerom.no
      Drømmerom storefront

      Live

      part time, ongoing

      Conversion work

      Drømmerom (opens in a new tab)

      Ongoing conversion work for a Norwegian children's furniture store, plus a custom bundle app.

      • Shopify
      • CRO
      • Custom app
      Visit the site
    • Shopify admin
      PDP Winner Promotion in the Shopify admin

      1 action

      winner to control

      Internal Shopify app

      PDP Winner Promotion

      Promotes a winning test page onto the control in one action, backing up the control first.

      • Remix
      • Polaris
      • Admin API
      Read the case study
    Also shipped forSlick Chicks (opens in a new tab)Nabilla Beauty (opens in a new tab)Drink Jubi (opens in a new tab)The Healthy Back Bag (opens in a new tab)Savvy Boheme (opens in a new tab)Julia Lloyd George (opens in a new tab)

    Experience

    Seven years shipping for ecommerce teams.

    From agency builds to owning Shopify development on a store doing roughly $2M a month.
    Read the résuméDownload PDF
    2019 to now, at a glanceFull time or contractPart time, ~10 hrs/week

    1. Senior Shopify & CRO Developer

      Incubator Lab (opens in a new tab) · Client: Puur Smile · Remote

      March 2026 – September 2026Contract, full time

      Owned Shopify development for a DTC oral-care store doing roughly $2M a month.

      • 192 product pages and pre-landers, shipped as one testing programme
      • Three custom Shopify apps: a membership portal, Buy X Get Y, and a discount engine
      • Ran the A/B programme in Intelligems; the clearest test lifted conversion 24.89%
      • Shopify
      • Liquid
      • JavaScript
      • Checkout Champ
      • Recharge
      • Checkout Extensions
      • +12 more
      Full details (12)
      • Owned Shopify development on the Puur Smile oral-care account, a store doing roughly $2M a month in sales: custom Liquid sections, bundle and offer variants, subscription selectors, sticky mobile purchase UX, and cart logic across a catalogue running continuous tests. Over the period, the store's conversion rate rose 59% to 3.59%, a figure shared with the offer and media side of the team.
      • Built and maintained 192 product pages and pre-landers as a single testing programme, spanning direct-response PDPs, advertorials, ranking pages, listicles, and journal-style bridges in Shopify, Replo, and GemPages.
      • Built the dental membership end to end as a custom Shopify app, the PuurSmile Dental Portal. The plan sells as a subscription that entitles members to recurring benefits, so the app carries the parts a theme cannot: enrolment from inside the product page, member state and entitlements, a portal where members manage or cancel their own plan, checkout extensions, and custom Recharge behaviour for guarded carts and cancellation handling. Inside it, built the billing and eligibility pipeline that keeps the programme honest: a Node service on Railway between Shopify, Recharge and Careington, the third-party provider who fulfils the plan. It generates their 29-field eligibility file, validates it before sending, assigns each member to the right billing group and delivers it over SFTP, with cancellations driven by a single Recharge webhook so dental access ends only when no qualifying subscription is left. Their full-file format cancels anyone missing from it, so an incomplete upload would have terminated around 22,000 existing members at once. I caught that mid-build and put the safeguards in before it could reach production.
      • Ran that app's own infrastructure, deploying its dashboard on Railway and configuring SMTP so enrolment, renewal, and cancellation mail sent reliably rather than through a theme app.
      • Fixed a silent revenue leak in the free-gift programme. Gifts were added to the cart client-side, so any customer checking out through Shop Pay or an express button skipped the cart entirely and the gift never reached the order. Built a custom Buy X Get Y app that adds the gift inside checkout itself, so it lands whichever checkout path the customer takes, and shipped it per product line as the catalogue grew.
      • Removed a hard ceiling on experimentation. Shopify caps a discount at 25 products, and the store had outgrown it as free-gift combinations multiplied across tests. Proposed and built an app that collapses the whole programme into a single discount rule: the backend maps each gift to its trigger product and marks assigned items free, so one rule covers every combination, the gift code stays consistent, and a new test no longer consumes a discount slot. Shipped with an admin dashboard so the team could manage the mapping without a developer.
      • Audited and cleaned a live theme that had drifted badly: hardcoded IDs in template logic, page-builder blocks carrying their own inline HTML and scripts, duplicate JavaScript includes, and scripts nothing referenced any more, all of it costing load time. Documented what each piece did before touching it, removed what was dead, tracked what stayed, converted images to WebP, and agreed a set of coding standards with the team so the theme would not drift back.
      • Built the team's reusable Checkout Champ funnel foundation from the ground up: multi-step checkout, one-click post-purchase upsells and downsells, subscription journeys, offer configuration, and conversion tracking. Documented the setup and guided the in-house developer through updates so the working funnel could be duplicated as the base for new landing pages and checkout tests.
      • Brought structure to a fast-moving contractor environment: created a PageSpeed and implementation tracker, an internal development roadmap, reusable QA checklists, and a Dev → Self-QA → Tracker Update → QA Review workflow covering PDPs, advertorials, landing pages, cart, checkout, forms, tracking, and responsive QA.
      • Provided technical direction to the in-house developer, reviewing implementation approach, explaining reusable patterns, and helping standardize naming, handoffs, staging-first releases, coding practices, and safer deployment planning instead of one-off live edits.
      • Ran the A/B programme in Intelligems and reported it honestly. Adding express payment methods to the product page lifted conversion 24.89%, from 2.03% to 2.54% across 28,073 visitors, with the interval entirely above zero. A scarcity counter driven by real inventory lifted conversion 15.26% at 98% probability, on an interval whose lower edge sat at zero, and left order value unproven. A pricing test never separated on the topline, though it established that the higher price earned 42% more revenue per unit on 27% fewer units, so the price stayed put pending a larger sample. Decisions were made on intervals rather than on point estimates.
      • Supported VWO experimentation and production QA across PDPs, cart, checkout, discounts, shipping rules, and performance, translating marketing tests into production code without breaking analytics or attribution.

    2. Senior Shopify Developer & CRO Specialist

      Drømmerom (opens in a new tab) · Remote

      January 2026 – PresentPart time, ~10 hrs/week

      Conversion work for drommerom.no and Sengehuset, two Norwegian home and furniture brands.

      • Built bed-mattress-discount, a custom app that prices a bed and mattress as a bundle
      • A/B tests, UX audits and performance work across product pages and checkout
      • Shopify
      • Liquid
      • CRO
      • A/B Testing
      • GA4
      • GTM
      • +2 more
      Full details (4)
      • Conversion-focused Shopify development for drommerom.no and Sengehuset, two Norwegian home and furniture brands.
      • Built bed-mattress-discount, a custom Shopify app behind the store's bundle setup, so a bed and mattress bought together are priced as a bundle. One of five custom Shopify apps I have in production.
      • Work across product pages, collection layouts, and checkout flows, aimed at revenue per session rather than traffic.
      • Iterative delivery through A/B testing, UX audits, and performance work tuned to Scandinavian ecommerce buyers.

    3. Senior Web & eCommerce Developer

      Seth Media (opens in a new tab) · Client: Norwegian BioLabs · Oslo, Norway

      September 2024 – March 2026Consulting engagement

      Built and ran a multi-region Shopify store selling into three European markets.

      • Currency, tax and shipping handled per market in one store
      • Custom Shopify and Checkout Champ builds across Seth Media's European roster
      • Shopify
      • Checkout Champ
      • GemPages
      • Replo
      • Liquid
      • WordPress
      • +3 more
      Full details (3)
      • Built and ran the Norwegian BioLabs storefront, a multi-region Shopify store selling into three European markets with currency, tax, and shipping handled per market.
      • Custom Shopify and Checkout Champ builds with conversion-focused interfaces, across Seth Media's European ecommerce roster.
      • Landing pages built as testable variants rather than one-off designs.

    4. Advanced Shopify and WordPress Developer

      Growmodo · Leverkusen, Germany

      June 2021 – August 2024Full time

      Shopify and WordPress for a rotating roster of global clients, for three years.

      • Custom themes, plugins and API-driven integrations
      • Projects taken from brief to deployment alongside the design team
      • WordPress
      • Shopify
      • PHP
      • React
      • WooCommerce
      • SEO
      Full details (3)
      • Delivered WordPress and Shopify work for a rotating roster of global clients.
      • Built custom themes, plugins, and API-driven integrations.
      • Took projects from brief to deployment alongside the design team.

    5. Web Developer / Designer

      Innocentrix Philippines · Mandaue City, Cebu

      June 2019 – April 2021Full time

      WordPress, Shopify and WooCommerce sites, designed and built by the same hands.

      • Design in Figma and Adobe XD, then the code
      • WooCommerce storefronts with payment integration and cart flows
      • WordPress
      • Shopify
      • WooCommerce
      • PHP
      • Figma
      • Google Ads
      Full details (3)
      • Built WordPress and Shopify sites with performance as a standing requirement.
      • Handled design and development together, in Figma, Adobe XD, and code.
      • Built WooCommerce storefronts with payment integration and cart flows.

    Results

    Measured, with the intervals left in.

    Tests come first: both arms saw the same traffic, so ad spend cannot explain the difference. Store figures are shared with offers and pricing.
    See the full analytics

    A/B test · Intelligems · 5 to 16 June 2026

    Express payment methods on the product page

    +24.89%

    conversion rateEstablished

    Interval entirely above zero, so ad spend cannot explain it.

    28,073 visitors · 11 days · 99.7% probability to beat control

    The whole programme

    Three tests, reported straight

    • Add payment methods

      +24.89% conversion · Established

    • Real scarcity counter

      +15.26% conversion · Probable, not proven

    • Pricing test

      +4.25% conversion · No topline result

    Decisions were made on the interval, not the headline number.

    Store funnel · 1 Mar to 19 Sep 2026

    More visitors reached the end

    Shared with offers and pricing
    • Added to cart8.44% of sessions, was 5.96%

      166,037 in the period, up 70%

    • Reached checkout6.28% of sessions, was 4.69%

      123,582 in the period, up 61%

    • Completed checkout3.59% of sessions, was 2.25%

      70,702 in the period, up 92%

    EngagementPrior six months, derived

    Store conversion rate

    3.59%

    up 59%

    Against the six months before. Shared with offers and pricing.

    • Sessionsup 20%
    • Completed checkoutsup 92%

    Traffic grew a fifth; finished checkouts nearly doubled.

    9 screenshots from the dashboards. Select one to read it full size.

    • Conversion funnel, all four steps3.59% conversion across 1,965,578 sessions. Add to cart up 73%, reached checkout up 64%, completed checkout up 95%.
    • Conversion rate over time3.59%, up 59% on the prior six months. The solid line is the engagement window, the dotted line the period before it.
    • The custom apps, in the store adminPuurSmile Dental Portal, buy-x-get-y-12 and buy-x-get-y-probiotic, installed on the live store.
    • Checkout Champ funnel, built outLead page, checkout with selector, three upsells and three downsells, with alternate pages held for testing.
    • The whole dashboardChannels, devices, locations, cohorts and landing pages for the same period.
    • Checkout Champ, all funnels$15,280.03 gross across 176 orders and 12,382 visits, 51 of them recurring. The funnels launched during the engagement, so the deltas shown compare against a near-zero baseline.
    • One funnel on its ownThe oral probiotic lozenges funnel: $7,048.54 gross across 97 orders and 11,951 visits, 26 of them recurring.
    • Earlier in the engagement269K sessions at 2.79% completed checkout, before the later gains above.
    • Norwegian BioLabs overviewA separate engagement: 25.3K sessions, NOK 1.12M total sales, 135 orders.

    Skills

    What I would own on your team.

    The whole revenue path, from the product page to the tracking that says whether it worked.

    • Shopify storefronts

      Product pages, sections and cart logic, built so every part of them can be tested.

      • Liquid
      • JavaScript
      • PDP rebuilds
      • Bundle and subscription offers
      • Sticky mobile add-to-cart
      • Theme audits
      • Speed and WebP

    • Custom Shopify apps

      For what a theme cannot carry: member portals, free gifts that survive express checkout, discount logic past platform limits.

      • Shopify Admin API
      • Checkout extensions
      • Remix and Polaris
      • Server-side gift logic
      • Admin dashboards
      • Railway
      • SMTP

    • Checkout and funnels

      Checkout Champ checkouts with one-click upsells and downsells.

      • Multi-step checkout
      • Post-purchase upsells
      • Downsells
      • Conversion tracking

    • Subscriptions and memberships

      Recharge flows and membership programmes, end to end.

      • Recharge
      • Guarded carts
      • Portal controls
      • Cancellations

    • Experiments and analytics

      Tests decided on intervals, on tracking you can trust.

      • Intelligems
      • VWO
      • GA4
      • GTM
      • Server-side tagging

    • Landing pages

      Advertorials, listicles and ranking pages for paid traffic.

      • Replo
      • GemPages
      • Custom Liquid
      • Variant-ready pages

    • Team process

      QA checklists, trackers and staging-first releases.

      • QA workflow
      • PageSpeed tracker
      • Code review
      • Documentation

    • AI in the workflow

      Claude Code and ChatGPT in the build, every line reviewed.

      • Claude Code
      • ChatGPT
      • Builder AI
      • AI features in products

    The stack I work in

    From the roles above, most recent first.

    • Shopify
    • JavaScript
    • TypeScript
    • React
    • Remix
    • Node.js
    • GitHub
    • Railway
    • GA4
    • Google Tag Manager
    • Hotjar
    • Meta pixel
    • TikTok pixel
    • Figma
    • Claude Code
    • WordPress
    • WooCommerce
    • Liquid
    • Checkout Champ
    • Recharge
    • Klaviyo
    • Replo
    • GemPages
    • Intelligems
    • VWO
    • UpCart
    • Polaris

    On GitHub

    1,044 contributions in the last year.

    Most of it is client work in private repositories, so it shows here as a count and the code stays private. github.com/cristiandaron (opens in a new tab)

    OctNovDecJanFebMarAprMayJunJulAugSepOct

    4 contributions on 8 October 2026. See that day on GitHub (opens in a new tab)

    Updated 8 October 2026.

    References

    From the people who signed off the work.

    Cristian was our go-to senior developer for Shopify projects for three years. He consistently delivered the most complex builds on time and maintained the highest code quality standards on the team.
    Helga KowalskiCOO, Growmodo
    • His ability to ship custom checkout flows fast, while keeping conversion data clean, is unmatched.
      Seth JørgensenFounder, Seth Media
    • Cristian handled everything from storefront to analytics. Our checkout conversion improved dramatically in the first month.
      Marius HaugenCEO, Norwegian Biolabs
    • We went from sub-1% conversions to consistently hitting 2.7–5%. This wasn't just development work, it was a revenue engine.
      Oren SchaubleCEO, Essence Herbs
    • He rebuilt our PDPs with CRO best practices and dialed in our Klaviyo flows. We saw lifts within two weeks.
      Nabilla AnwarFounder, Nabilla Beauty
    • Cristian built a Shopify experience that feels premium and converts beautifully. It exceeded my expectations completely.
      Julia Lloyd GeorgeFounder, Julia Lloyd George Jewelry

    Questions

    Before you get in touch.

    Something not covered here?

    Ask it on a call, or by email.

    Book 15 minutes (opens in a new tab)Email me

    Yes. My contract with Incubator Lab on the Puur Smile account ended in September 2026, and I am looking for a full-time remote role as a senior Shopify developer. I also work part time for Drømmerom, about 10 hours a week.

    Negros Oriental, in the Philippines, on UTC+8. That overlaps European mornings and US evenings, and I have worked remotely with teams in Norway, Germany and the US.

    At Incubator Lab I set up a PageSpeed and implementation tracker, reusable QA checklists and a Dev, Self-QA, Tracker Update, QA Review workflow, and gave the in-house developer technical direction on reusable patterns, naming, handoffs and staging-first releases.

    Yes, and this is usually where the interesting work is. I have built membership programmes end to end: enrolment inside the product page, a custom dashboard, checkout extensions, transactional email over SMTP, and custom Recharge behaviour for guarded carts, portal controls, and cancellations.

    Claude Code and ChatGPT in the build, the builder AI in GemPages and Replo for page variants, and AI features shipped inside client products. Generated code is reviewed before it ships, the same as anything else.

    Shopify Plus, Checkout Champ, Recharge, Klaviyo, Replo, GemPages, VWO, Intelligems, UpCart, GA4, GTM, and Hotjar, among others. If you are using something I have not listed, I will tell you upfront whether I can support it.

    A small number, alongside a full-time role. The Checkout Champ page covers funnel work and how projects are priced; for anything else, book a call and I will give you a straight answer on scope.

    Contact

    Hiring a Shopify developer? Let's talk.

    Fifteen minutes is enough to find out whether I fit the role. Prefer to read first? The CV is one click away.

    Book a 15-minute call (opens in a new tab)Download the CV

    Open to full-time remote rolesNegros Oriental, UTC+8