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Bart Grudka · Head of E-commerce

I run e-commerce.
And build the systems behind it.

Head of E-commerce at an 8-figure Shopify Plus brand with 1M+ customers. I lead the team, own the P&L and build the automation that keeps both moving. Remote-first.

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Bart Grudka
Open to remote roles
6xDropship revenue, 12 months
3.15 → 1.24dMedian fulfillment, 3-month window
2xStore conversion, 2022 rebuild
6% → 24%Cancellation save rate, yearly average
  1. 2013CANDEVFreelance web development and brand identity for international clients.
  2. 2020Head of Front-endJoined a Shopify Plus brand as its third employee. Led a 2 to 6 person team and rebuilt the storefront live.
  3. 2025Head of E-commerceThe whole operation: merchandising, pricing, retention, conversion and the systems behind them.
  4. 2026NextOpen to Head of E-commerce and senior e-commerce roles. Remote, B2B or EOR.

Who I am, in one paragraph

I'm Bart Grudka, an e-commerce lead and Shopify Plus engineer based in Poland, working on US and EU hours. I've run CANDEV, my web development studio, since 2013. From 2020 to 2026 I was the third employee at an 8-figure Shopify Plus brand, first as Head of Front-end and then as Head of E-commerce, owning the P&L and building the automation behind it: order placement by API, a live shipping rate engine, subscription rescue, catalog and pricing systems. I'm open to remote Head of E-commerce and senior e-commerce roles, and I take on Shopify Plus engineering work through CANDEV.

Scope

What I own, and what comes next.

TeamLed a front-end team of 2 to 6 for five years. Since 2025, the whole e-commerce operation: AI agents do the volume, people make the calls, and I stay close enough to the code to unblock either.
Commercial ownershipThe store's revenue and margin targets from the e-commerce side: conversion rate, average order value, A/B testing, catalog growth and catalog correctness.
TradingAll of merchandising, pricing strategy and retention. Acquisition and customer service run through me whenever they touch the store.
When things breakThe person every team calls when something fails, whichever system it lives in. Diagnose, fix, then automate the fix so it stays fixed.
Systems I built

Real store, real numbers.

Six systems from one Shopify Plus operation. Three that moved the commercial numbers first, then the ones that removed the manual work. Measurement windows noted.

01 · Listing pipeline & repricing

Listing and pricing on autopilot. 6x channel growth.

Two distributor feeds that disagree, one product under several codes, mismatched units. The pipeline normalizes and matches before writing anything, lists 70,000 SKUs with images, variants and metafields, verifies them against source, and reprices against the market.

Node.js · Python · Postgres · Shopify Admin API · n8n · Cloud Run
70,000SKUs listed
0Manual listings
02 · Live shipping rate engine

Shipping rates that pay for themselves.

Live rates from a hosted engine (six international zones, holiday-aware windows) instead of static tables. A Checkout UI extension warns when an order will arrive in two shipments. Margin up, checkout conversion flat.

Economy$6.95
Priority$12.40
Express$24.80
Arrives in 2 shipments
15 to 20%Shipping margin after launch, from break-even
FlatCheckout conversion, monitored at checkout level
Checkout UI Extensions · Carrier Service API · App Bridge · React Router 7 · FastAPI · Postgres Full case study on candev.pl →
03 · Subscription retention

Out of stock shouldn't mean cancelled.

A five-figure subscriber program was losing revenue to its own catalog. One system spots charges about to fail on an out-of-stock SKU and offers a swap first. Another ranks replacements for discontinued products by vector similarity. A human confirms.

77%of failed subscription charges traced to one fixable cause
4xCancellation save rate, 6% → 24%, yearly average
Swap or switchThe customer decides
Next.js · Postgres + vector embeddings · Recharge API · Klaviyo · Cloud Scheduler Full case study on candev.pl →
Also built
04 · Dropship order automation

Every order placed by API. None by hand.

Webhook intake, validation, routing to the cheaper distributor, placement via API, tracking synced back. Median fulfillment 3.15 to 1.24 days over a 3-month window; same or next-day shipping from 4% to 41%.

Next.js · TypeScript · Postgres · Shopify Admin API · Cloud Run Full case study on candev.pl →
05 · Storefront rebuild

Rebuilt live. Conversion doubled.

Full theme rebuild on a live store during a rebrand. No downtime, no traffic drop, metafields so merchandising edits copy without a developer. Store-wide conversion rate 2x across the 2022 rebuild.

Liquid · JavaScript · metaobjects · Core Web Vitals
06 · GEO and AI-search program

From zero to 300,000+ search impressions.

Technical SEO, structured data and a content architecture built for AI answers. 300,000+ impressions in six months, six pages in the top 10, six pages cited in Google AI Overviews, one named by title inside the answer.

Technical SEO · Structured data · Search Console · Content architecture
Recommendations

From people who've worked with me.

He is quick and efficient in development and design, constantly finding solutions to tackle any challenges that appear. A good asset to any company.
Miguel Valente · Head of Digital Performance
He demonstrated a deep understanding of how technological systems work and was always willing to lend a hand to the team whenever issues arose. He showed remarkable innovation and out of the box thinking when new implementations were requested by leadership.
Jordan Morley · Logistics and Shipping Coordinator
Always ready to help, found solutions and open to feedback. His deliveries were always on time and always surprised me by going the extra mile.
Joaquín Reinoso Naranjo · Creative Director
Read them on LinkedIn
Freelance clients, 2017 to 2025 Every review 5 of 5 · 22 reviews on 99designs

He was extremely responsive and very easy to work with. It didn't take us long to get to the final design. I would certainly work with Bart for future projects.

a.gardiner

Great attitude and more than willing to tweak the design no matter how big or small the changes. Always responded quick.

zsmith003

I made several revisions and we got it perfect. Entire process start to finish was 48 hours.

JacobGarlick

He was creative in his approach, very responsive to any design feedback I provided, and easy to collaborate with. It would be an honor to work with him again in the future.

MattProjectOffset

This designer is excellent and is thorough and easy to work with. Designs came in fast and responded to feedback very well.

Anonymous client

High quality and quick communication. Looking forward to working with him again soon.

cravottasteven
How I work

Find the opportunity, then build it.

1Own the full cycleResearch, design, code, launch, then the numbers afterward. With a team, that means I can scope, review and unblock instead of only assigning.
2Ship dark, then flip switchesEvery automation goes live behind a master switch and per-capability toggles. Each piece proves itself and can be pulled back without a deploy.
3AI does the volume, people make the callsAgents run the catalog, orders and reporting. People approve the exceptions and decide what to build next. That is how a small team runs what used to take a large one.
Currently open Head of E-commerce and senior e-commerce roles. Remote, B2B or EOR. Plus a small number of Shopify Plus projects through CANDEV.
Get in touch: bart@grudka.com Download CV