Freelancer logo How It Works Browse Jobs Log In Sign Up Post a Project Profile cover photo
You're now following .
Error following user.
This user does not allow users to follow them.
You are already following this user.
Your membership plan only allows 0 follows. Upgrade here.
Successfully unfollowed user.
Error unfollowing user.
You have successfully recommended
Error recommending user.
Something went wrong. Please refresh the page and try again.
Email successfully verified.
User Avatar
$60 USD / hour
Flag of GREECE
peristeri, greece
$60 USD / hour
It's currently 1:53 AM here
Joined June 20, 2020
4 Recommendations

Filippos D.


5.0 (121 reviews)
$60 USD / hour
Flag of GREECE
peristeri, greece
$60 USD / hour
Jobs Completed
On Budget
On Time
Repeat Hire Rate

Shopify Expert & Web Dev. | Designer

• Certified Shopify Partner | Custom Shopify development and optimization • Web apps | UI/UX | Frontend | Backend 1. CUSTOM SHOPIFY WORK - Years of experience working on Shopify stores and apps. - 95% of my work is on Shopify. - Partner of over 40 merchants in the U.S., Canada, Australia and Europe, including Shopify Plus stores. Some of my services are theme alterations (Liquid, HTML, CSS, JS), custom apps and API integrations, e-commerce design, UX, speed and conversion optimization, on-page SEO and more. 2. WHY HIRE ME ❌ Tired of cheap solutions that break and lead to wasted time and money? ✅ I'm trusted by hundreds of clients because I put quality first. This includes proper practices, maintainability and support. ❌ Tired of paying for slow work, that drags on and leads to increased costs? ✅ I've been solving challenging problems for years. This experience allows me to work really fast and thus take much less time to deliver. ❌ Tired of recurring problems and no response by the person responsible? ✅ I take testing very seriously. But if a bug is encountered after I complete the project, I'm there and I'll fix it for free. ❌ Disappointed by work that's more like a transaction? ✅ I'm grateful that my clients constantly offer more work to me. This is because I value a good relationship over a transaction. Also: ➕ Not a generalist. My fields of expertise are very specific. This way, I know all about them. ➕ I offer advice when I see that something can be solved in a better way. 3. WEBSITE DESIGN / UX Some of my services: Building responsive websites from scratch, redesigning websites, increasing conversions, optimizing speed, anything HTML / CSS / JS and more. The designs I create are clean, memorable, but most of all serve the client's and the user's goals. You can rest assured that your website will be a balanced and professional combination of content, imagery, typography, colors, shapes. 4. FULL STACK WEB APPS I'm an expert in frontend web app design, React.js, UI/UX / prototypes / wireframes, backend / Node.js, APIs, databases / MongoDB / SQL. I have solid experience in full-stack development with JS. My code is designed and written in a clean, organised, and maintainable style. Other languages include PHP and Python.
Freelancer Web Developers Greece

Contact Filippos D. about your job

Log in to discuss any details over chat.

Portfolio Items

Development of product bundles widget for athletic equipment Shopify Plus store. The widget allows the customer to purchase a bundle of products, easily choosing variants.

The pre-existing backend functionality consisted of Shopify Scripts and product metafields.

The design achieved better display of the products, an easier and more straightforward way for customers to pick variants and add the bundle to cart, a well structured separation of the individual bundles, and a feel very consistent with the rest of the store's style.
Product bundles for Shopify Plus store
Full integration and synchronization of dropshipping distributor Nova Engel, with Shopify store.

I deployed a full, constant synchronization of more than 8,000 beauty products with the store, including images, inventory, and the processing of orders.

With added features like detailed logging, fast sync execution with Shopify Bulk Mutations, email notifications to the merchant, display of the supplier's order status on the Shopify admin dashboard.
Nova Engel dropshipping supplier integration to Shopify
The client had a Shopify store with 130,000 motorcycle parts. The supplier managed inventory, and used the Lightspeed Retail API to update inventory and pricing information on Shopify. There was a script as a private app installed, that handled this process.

The challenge was the long hours required for synchronization to complete. Inventory needed to be constantly up to date, because inaccuracies could lead to canceled orders. As a result, the store initially did not display products that were out of stock, to reduce the number of requests and long execution.

I optimized the script, written in Python, and reduced synchronization time from several hours, to only a few minutes. This allowed the store to list the entire catalog of products, letting customers view out-of-stock items, and preventing issues with inventory inaccuracies.
Inventory management for a 130,000 product Shopify store
Design and implementation of a seat selection widget on the product page template of the Shopify theme. The customer needed a way to let users purchase virtual seats to the webinars they were selling.

I designed, developed and integrated a widget to let customers pick their seats, add their names to the order, and proceed to checkout. All this information was accessible by the merchant, who had full control of the reservations for each webinar, and the submitted orders.
Webinar seats reservation widget for Shopify product page
Implementation of design and integration of product designer app to the Shopify theme. Integration of third-party API to process orders. The app allowed the user to customize and order pet tags, and the design was provided by the client.

The app was built with React.js and needed further customization to work with the theme. It had no styling initially. I added a single custom product to the store, and used the Cart API for customer flows.

I also developed and deployed a private app to act as a proxy between Shopify and the third-party API that receives the orders.

The result was a stylish and easy to use widget, placed on the homepage, for visitors to customize their pet tags and place their order.
Custom product designer / Red Dingo to Shopify integration
Full Shopify store redesign to fix numerous accessibility issues, and improve user experience. The site initially had several contrast issues, and issues with user interaction controls, like buttons. The theme code had a lot of custom interventions, which created a challenge in altering it to implement changes.

After an initial audit of the website, I proceeded with implementing the changes, improving accessibility, and making it easier for users to complete flows like adding to cart, checkout, searching. This also resulted in a vastly improved style and feel for all of the pages, and the store as a whole.
Accessibility / UX audit and redesign for Shopify bread shop


Changes saved
Showing 1 - 5 out of 50+ reviews
Filter reviews by: 4.8
$25.00 USD
Great communication
PHP JavaScript CSS HTML Blog Install
+1 more
Flag of Christopher C. @Exit23Games
15 days ago
$3,345.71 CAD
His work was top quality and he's very reliable.
PHP JavaScript CSS HTML Blog Install
+1 more
Flag of Vanspec M. @VanspecMarketing
21 days ago
$150.00 CAD
Second time working with Filippos. Will be back again.
PHP JavaScript CSS HTML Blog Install
+1 more
Flag of Jesse B. @indinuity
26 days ago
Price undisclosed
Great developer, our strategy changed mid-way due to Shopify limitations but Filippos changed tracks and finished the work for quickly and did exactly what was needed.
Shopify Development Liquid Template
Flag of Christy R. @christysro
1 month ago
$240.00 USD
Great working with Filippos as always
PHP JavaScript CSS HTML Blog Install
+1 more
Flag of Christy R. @christysro
1 month ago


Marketing and Communication

Athens University of Economics and Business, Greece 2017 - 2021
(4 years)


CXL Certified Optimizer

CXL Institute
This advanced certification program provides 90+ hours of comprehensive training in conversion optimization, user experience, and digital analytics, equipping students with skills, methodology, and tools to become successful optimizers.

Shopify Partner Acedemy Certifications

A number of certifications for Shopify app development, theme development, business, marketing, products

Cloud DevOps Engineer Program

Cloud DevOps / Amazon Web Services / Infrastructure as Code / CI/CD Pipelines, Monitoring & Logging / Docker / Kubernetes

Contact Filippos D. about your job

Log in to discuss any details over chat.


Preferred Freelancer
Identity Verified
Payment Verified
Phone Verified
Email Verified
Facebook Connected


preferredfreelancer-1.png Preferred Freelancer Program SLA 1 94% javascript_1.png JavaScript 1 92% WordPress.png WordPress 1 80% us_eng_1.png US English 1 80% html_1.png HTML 1 77%

Top Skills

HTML 100 JavaScript 98 PHP 97 CSS 85 Blog Install 76

Browse Similar Freelancers

Web Developers in Greece
Web Developers
Javascript Developers
PHP Developers

Browse Similar Showcases

Previous User
Next User
Invite sent successfully!
Registered Users Total Jobs Posted
Freelancer ® is a registered Trademark of Freelancer Technology Pty Limited (ACN 142 189 759)
Copyright © 2023 Freelancer Technology Pty Limited (ACN 142 189 759)
Loading preview
Permission granted for Geolocation.
Your login session has expired and you have been logged out. Please log in again.