01
Time reserved every month
You choose a volume of hours, blocked in my schedule, just for your store. No slot to negotiate, no waiting for availability.
Dev time reserved every month · Certified PrestaShop Expert
PrestaShop Maintenance & Development
PrestaShop Maintenance & Development
€70/h, sliding scale
PrestaShop maintenance and ongoing development contract
Every month, a set volume of hours is reserved in my schedule to move your store forward: improvements, bug fixes, custom development. Monitoring and security are included. Your store keeps improving, without you having to chase a provider.
✓ 7 years
✓ 99.8 % average uptime
✓ Requests tracked on Trello
🧭 The principle
How it works
A simple process, designed so your store moves forward every month, without paperwork or a quote for every small request.
02
You post your requests on Trello
A dedicated Trello board for your store. An idea, a bug, an improvement: you create a card, with screenshots or files if needed.
03
Larger requests are estimated upfront
A bigger request? I estimate it before starting and you approve. You always know what a task costs before it begins.
04
You follow everything, live
Each card moves along until it reaches “Done”. We discuss directly on it, and the monthly report sums up what was done.
🧰 What's included
What's really in your contract
Two things, every month: hours to keep your store evolving, and a foundation that keeps it healthy.
⏱️ Your monthly hours go towards
🚀 Development & new featuresNew features, new pages, theme adjustments: the store grows with your business.
✨ ImprovementsUsability, speed, checkout flow, technical SEO: we fine-tune what drives sales.
🐞 Bug fixesA module acting up, a broken layout, an error in the cart: fixed using your hours, with no quote each time.
🧩 Custom developmentBespoke modules, integration with a carrier, an ERP or a business tool: whatever is specific to your store.
You choose the volume of hours for the month. Any significant request is estimated before work starts; need more? Add hours.
🛡️ The foundation, included whatever the volume
🆘 Priority interventionSite down, blocking bug, security alert: you skip the queue, I pick up, I step in.
📡 Monitoring every 5 minEurope + USA tests every 5 minutes. SMS alert to me before your customers notice the outage.
🦠 Malware detectionObfuscated code, hidden iframes, defacement: detected automatically.
🛡️ PrestaShop CVE watchTracking published vulnerabilities, hotfix applied as soon as it's available.
📌 Dedicated Trello boardAll your requests in one place, with their progress and our conversations.
📋 Monthly reportWhat's been done, what's been detected, what's planned. Received by email on the 1st of the month.
📌 Request tracking
Your requests, tracked on Trello
No more requests lost in email threads and “so, any progress?” follow-ups. Everything happens in one place, and you can see where each task stands.
- A board dedicated to your storeAccessible at any time, from a computer or from the Trello app on your phone.
- A request in one minuteYou create a card, describe what you need, add a screenshot or a file. That's it.
- We discuss right on the taskQuestions, details, approval: the conversation stays attached to the card. Nothing gets lost, the history is kept.
- Progress in real timeTo do, in progress, to review, done: each card moves from column to column as the work goes on. No more asking where things stand.
No need to know Trello: you receive an invitation to your store's board, you just open it.
📌 Store — RequestsTrello
To do2
FeatureAdd customer reviews to the product page
Improvement“Free shipping from €60” banner
In progress1
BugPromo code rejected in the cart
To review1
CustomOrder export to the carrier
Done2
ImprovementFaster category page
BugProduct image distorted on mobile
Example tracking board. Every client has their own.
📌 Why
A PrestaShop store is a living thing
Without maintenance, PrestaShop accumulates unpatched CVEs, modules become incompatible, and one day, it crashes. At the worst possible moment. This is exactly what a follow-up by a certified PrestaShop expert prevents.
6+
PrestaShop security updates / year
on average
on average
143
Threats blocked
last month (KLN clients)
last month (KLN clients)
99.8%
Average uptime
over 30 days
over 30 days
<24h
Response time
to your requests
to your requests
Certified PrestaShop Expert
Official PrestaShop Expert CORE SKILLS certification. Compatible with 1.6 / 1.7 / 8 / 9. Custom modules, optimisation, migration, debugging — I know PrestaShop inside out.
Reply within 24 h
Every request gets a reply within 24 hours. No ticket black hole, no multi-level support. You reach out, I respond.
No hidden fees
A fixed monthly price, stated upfront. No hidden cost, no surprise. You know exactly what you pay every month.
💰 Pricing
Simple pricing, by the hour
You choose the volume of hours reserved each month · Fixed monthly amount, stated upfront · No hidden fees. With a one-year commitment, the larger the volume, the better the hourly rate.
🔓 No commitment
No commitment
whatever the volume
70€/ hour
VAT not applicable · or up to 10 h / month with commitment
- Volume of hours reserved each month
- 24/7 monitoring and priority intervention
- Security: CVE watch and malware detection
- Trello board and monthly report
- Estimate before any significant request
⭐ Sliding scale
📅 1-year commitment
Over 10 h / month
on the whole volume
66€/ hour
VAT not applicable · 1-year commitment
- Up to 10 h: €70/h
- Over 10 h: €66/h on the whole volume
- The whole foundation included (monitoring, security, Trello)
- Example: 15 h / month = €990
📅 1-year commitment
Over 25 h / month
on the whole volume
62€/ hour
VAT not applicable · 1-year commitment
- €62/h on the whole volume
- The whole foundation included (monitoring, security, Trello)
- Example: 30 h / month = €1,860
🧮 Monthly volume examples
With a 1-year commitment. No commitment: €70/h. A significant request is always estimated before work starts.
5 h→€350
10 h→€700
15 h→€990
20 h→€1,320
30 h→€1,860
🛡️ Preventive maintenance
Mainly want an up-to-date, protected store?
A fixed monthly plan to keep your store updated, patched and monitored, without thinking about it.
- 2 minor PrestaShop updates per year
- Security vulnerability fixes
- Connection to KLN-Monitoring, the monitoring tool
- Performance and security report at the end of each month, with a set of actions ranked by priority
- Optimisations can be scheduled within a block of hours
250€/ month
VAT not applicable · extra development at the hourly rate
❓ FAQ
The real questions about maintenance
PrestaShop publishes on average 6 to 8 security updates per year. Without maintenance, your store accumulates unpatched CVEs and eventually gets hacked or crashes from a module incompatibility. A maintenance contract is the guarantee that your store stays up to date, monitored 24/7, and that someone steps in when it goes down — without having to scramble for a provider in an emergency.
PrestaShop 1.6, 1.7, 8.x and 9.x. I'm certified PrestaShop Expert CORE SKILLS. If you're on 1.6 or 1.7, we can plan a progressive migration within your monthly volume of hours, with no service interruption.
Pricing is hourly: you choose the volume of hours reserved each month. No commitment: €70/h. With a one-year commitment: €70/h up to 10 h per month, €66/h above 10 h and €62/h above 25 h, applied to the whole volume. Example: 15 h per month with commitment = €990. Monitoring, security and Trello follow-up are included whatever the volume.
You choose a volume of hours, reserved every month in my schedule. This time is used to move your store forward: new features, improvements, bug fixes, custom development.
On a dedicated Trello board for your store. You create one card per request, with screenshots or files if needed. We discuss directly on the card, and you follow its progress in real time: to do, in progress, to review, done. Nothing gets lost in email threads.
Any significant request is estimated before work starts: you receive the estimate, you approve it, then we schedule it. To move faster, you can add hours (€70/h excl. VAT) or increase your monthly volume.
No. Maintenance covers the follow-up, security and development of your store; hosting is not part of it.
It's not mandatory. With no commitment, the hour is €70. With a one-year commitment, the rate slides down: €66/h above 10 h per month and €62/h above 25 h per month, applied to the whole volume.
No, major updates (1.7 → 8, 8.1 → 8.2, etc.) are on a separate quote. They require a staging environment, full testing on the checkout flow, modules and theme, which far exceeds the monthly dev time included. What is included in maintenance: critical security hotfixes (published PrestaShop CVEs), fixes on vulnerable modules, and incident response. For a major update, we issue a quote with a timeline and staging tests.
My monitoring tool tests your site every 5 minutes from several regions. Monitoring runs 24/7: if an outage is detected, I receive an SMS + email alert immediately. If the site is completely down, I step in as a priority. Other fixes are handled during business hours, within your volume of hours.
Every contract includes 24/7 monitoring, security hotfixes, malware detection, the Trello board, the monthly report and priority intervention in case of downtime. Your hours for the month go to development, improvements and fixes.
Yes, to the following month, 1 month maximum.
🤝 Your contact
A developer by your side
No middleman: you talk directly to the certified developer who works on your site.
Kellian Jonville
Certified developerFounder of KLN-WEB, certified PrestaShop Expert. He handles the development, fixes and maintenance of your site.
Let's talk for 15 minutes?
15 minutes on the phone, I look at your site, I tell you what I'd improve. No commitment, no sales pitch.