Vanja DevčićSenior e-commerce engineer · 16+ years
WooCommerce that updates without breaking.
Staged updates, plugin conflict fixes, caching and custom development, shipped every month by a senior e-commerce engineer. Updates are tested on staging before they touch the live store. Magento is my core; I take on WooCommerce stores where the problem is speed, integrations or code quality.
Takes about 30 seconds. No email needed for the first result. Plans €290 to €1,490 a month, fixed in writing.
Sent to your inbox, usually within one working day. I will look at it personally too.
Your mail app should have opened with the request filled in. Press send there; nothing has reached me yet. If no mail window opened, write to hello@vdev.hr.
- Bamford
- Daylesford
- Stanley/Stella
- Steunkousen.nl
“He is genuinely one of the most proactive, insightful and solution-orientated developers I have worked with.”
What usually slows a WooCommerce store down
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01
Plugin conflicts after updatesUpdates applied on the live site, with no staging copy to test the combination of plugins first.
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02
No page or object cacheEvery visit rendered by PHP and the database, which falls over under sale traffic.
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03
Heavy page buildersLarge CSS and JavaScript bundles loaded on every product and category page.
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04
Cart fragments and AJAXBackground requests on every page view that keep the server busy for no visible benefit.
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05
Shared hosting limitsCheap hosting that cannot keep up once the catalogue and traffic grow.
- Staging environment and tested monthly updates
- Page cache, object cache and CDN set-up
- Plugin audit, conflict fixes and replacements
- Custom features and integrations
- Hosting and CDN advice when the setup is the problem
From a free check to a store that improves every month
Three steps. The first is free.
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Step 01Free
Free store check
Enter your URL. Get speed and theme findings, ranked by impact, in about 30 seconds. The full report follows by email within one working day. Unlock the full fix plan on it for €120 when you want the fixes, instantly.
Check my store -
Step 02€290
Engineering audit, €290
Code review, a roadmap and your fixed monthly price. Credited to your first month, refundable for 14 days.
Book the engineering audit -
Step 03Monthly
We ship every month
Send requests in your Jira, Asana or Slack. Tested on staging, then shipped, with a report on the 1st.
See the whole process in 2:39
The three steps above, recorded on the real site: the free check, the report, booking and paying for the engineering audit, the questionnaire after payment, and the monthly report. Captions on screen, no sound.
What 8 hours on WooCommerce look like
Real-shaped examples of a Growth month. Bigger items such as migrations and version upgrades are quoted as projects, so the plan hours stay for the work that keeps the store moving.
See the plans- Staged updates, then releaseWordPress, WooCommerce and plugin updates on staging, checkout and payments tested, released in your window. 2 h
- Slow filter plugin replacedA heavy layered-navigation plugin swapped for a lean one; category pages render in a fraction of the time. 3 h
- Cache tuning on your hostingObject cache, page cache and CDN set up properly for the current host, with cart and checkout excluded. 2 h
- EU B2B VAT display fixedCorrect VAT handling and display for business customers with a validated VAT ID. 1 h
Asked by WooCommerce stores
General questions about communication, billing and access are in the full FAQ.
Updates broke our site before. How do you avoid that?
Every update runs on a staging copy first, with checkout, payment and the top pages tested before release. If a plugin update breaks something, you never see it in production.
Which page builders and themes?
Gutenberg blocks first, and the common builders where a store already uses one. If a builder is the reason the site is slow, the engineering audit will say so, with the cost of leaving it.
Do you write custom plugins?
Yes, when a store needs something no plugin does well: integrations, pricing rules, checkout fields. Written as a proper plugin, in your repository, so updates do not wipe it out.
Should we move hosting?
Only if the engineering audit shows the host is the bottleneck. Often the fix is caching and a few plugins. If a move is right, it is quoted as a project and done with a staging copy first.
Fixed scope. Predictable monthly pricing.
Staging-first deploys and a monthly report in every plan, working in your own tools. Your price is fixed in the engineering audit. What decides it?
- Security patches and updates
- Uptime and speed monitoring
- Up to 3 hours of changes a month
- Everything in Care
- Up to 8 hours of development a month
- Speed, conversion and new features
- Everything in Growth
- Up to 16 hours of development a month
- Architecture and code review for your team
- 20 to 40 senior hours a month
- White-label, under your name
- No hiring, no payroll
Not sure which size? The €290 audit ends with the plan I would choose for your store and why. Need more than 16 hours a month? Book a 20-minute call and we size it.
- 01Free check, about 30 seconds. Mobile speed, platform and the biggest issue, then the full report by email. No call. Want the fixes right away? Unlock the full fix plan on the report for €120.
- 02Engineering audit, €290 once. I read the code and set your exact monthly price inside the range (€290 to €390 for Care, €690 to €990 for Growth, €1,290 to €1,490 for Scale), depending on the size and state of the store.
- 03The plan starts. The €290 is credited to your first month and the price stays the same every month after.
Compare plans in detail ShowHide
| Spec | Care | Growth | Scale | Agency retainer |
|---|---|---|---|---|
| Hours a month | up to 3 | up to 8 | up to 16 | 20 to 40 |
| Security patches and updates | Included | Included | Included | within hours |
| Uptime and Core Web Vitals monitoring | Included | Included | Included | on request |
| Staging-first deploys | Included | Included | Included | Included |
| Performance and conversion work | — | Included | Included | Included |
| New features | small changes | Included | Included | Included |
| Architecture and code review input | — | — | Included | Included |
| White-label, under your name | — | — | — | Included |
| Works in your Jira, Asana, Slack or Teams | Included | Included | Included | Included |
| A free board set up for you if you have no tool | Included | Included | Included | Included |
| Monthly report | Included | Included | Included | Included |
| First response | 1 working day | 1 working day | 1 working day | priority queue |
| Term | 3 months, then 30 days | 3 months, then 30 days | 3 months, then 30 days | monthly |
| Billing | monthly or annual | monthly or annual | monthly or annual | monthly |
New features, migrations and new stores are quoted at a fixed price. Need advice instead? See consulting. Book a 20-minute call
Your code stays yours.
NDA signed before access, read-only for the audit, removed on delivery.
How access works- Signed before accessNDA and data processing agreement are part of the agreement you sign at checkout. Nothing is accessed before that.
- Read-only for the auditThe audit needs to read code, not change it. No production changes, no deploys.
- No customer dataNo production database. If data is needed, an anonymised copy is used.
- Personal, revocable accessOne named account, 2FA on. Anything that has to be a secret reaches me through the secure drop: sealed in your browser with my public key, readable only on my machine, never by email. You can revoke it any time.
See what is slowing your store down
Free, no call. Results by email within one working day.