Thanos Atskakanis, Developer in Berlin, Germany
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Thanos Atskakanis

Verified Expert  in Engineering

Web Developer

Berlin, Germany
Toptal Member Since
August 19, 2020

Thanos is an exceptional, versatile full-stack web developer with hands-on experience in WordPress and Shopify theme and plugin development. Thanos has updated and maintained more than 50 WordPress and Shopify sites throughout his 14-year career, having worked on as many other projects with different technologies. Thanos is passionate about being of service to people and he's great with communication. Thanos loves learning new skills.


Oats Overnight
Shopify, Shopify API, Shopify Theme, JavaScript, Shopify Plus
WordPress, HTML, CSS, JavaScript
Built by Thanos
Sass, jQuery, JavaScript, CSS, CakePHP, Shopify, ExpressionEngine, HTML...




Preferred Environment

Slack, Sublime Text, Atom, MacOS

The most amazing...

...project I've worked on was a feedback platform app for the mystery dining company, Secret Squirrels.

Work Experience

Full-stack Developer

2021 - PRESENT
Oats Overnight
  • Developed the front end of marketing pages with complex custom elements, such as animated fixed-positioned slideshows and mapped images.
  • Applied changes for site optimization in accordance with the analytics results and requests I was given; also applied automation for asset minification.
  • Assisted with resolving issues around product subscriptions with the ReCharge plugin.
  • Developed custom shipping tracking pages with the use of the APIs of the shipping providers.
Technologies: Shopify, Shopify API, Shopify Theme, JavaScript, Shopify Plus

Web Designer | Developer

2020 - PRESENT
  • Developed a custom Shopify app with React and Rails for the Shopify sex shop Venus Envy. The app simplifies complexity by connecting Shopify and different plugins in one interface, with the use of their APIs.
  • Handled the Squarespace development for Erik Iversen's 5Rhythms website.
  • Implemented the WordPress BoldGrid setup and content migration for Nick Venegoni's new version of his holistic therapy website,
  • Handled the front end and design customizations along with site optimization, and WordPress plugin and theme updates for Community Forests International's charity website.
Technologies: WordPress, HTML, CSS, JavaScript

Freelance Developer

2011 - PRESENT
Built by Thanos
  • Created a custom event meeting management tool that was used by several media companies including Hitachi, Netcracker, and Tahola, in mobile conferences around the globe.
  • Developed the front end and set up the Shopify store for Darkroom, a design company based in London.
  • Developed the front end and the WordPress back end (migrated from ExpressionEngine) of the promotional website of the opera artist manager, James Black; am currently still managing and maintaining the website.
  • Maintained and fixed issues for numerous WordPress websites, approached by clients in need of technical support beyond their technical abilities.
Technologies: Sass, jQuery, JavaScript, CSS, CakePHP, Shopify, ExpressionEngine, HTML, WordPress, PHP

Lead Developer

2009 - 2020
Secret Squirrels
  • Built an initial app with PHP for mystery dining form submission.
  • Extended the app with various different add-ons, such as user management and a booking system used regularly by around 4,000 subscribers.
  • Connected the app to third-party services via a custom API, in order to provide our data to our Secret Squirrel's clients intranet.
  • Migrated the app and data to Ruby on Rails while working on the front-end development of a new design.
  • Worked on statistical data manipulation and various custom graph reports.
  • Developed an autonomous review system that was used by the clients' customers to review their products.
  • Integrated reviews and ratings from popular sites such as Google Maps and Tripadvisor.
Technologies: Amazon Web Services (AWS), Parallel Programming, Concurrent Programming, Test-driven Development (TDD), APIs, Ruby on Rails (RoR), Ruby, CSS, HTML, MySQL, PHP


2008 - 2014
Pretty UK Ltd
  • Developed several front-end and back-end features for the spread-betting application platform and promotional website ETX Capital. The platform was used by thousands of users, in many different countries across the globe.
  • Created an e-shop from scratch (with Magento) for the high-end West London-based store Chelsea Textiles.
  • Built an event meeting management tool used by Hertz.
  • Developed a JavaScript touch-screen interactive application for a conference.
  • Built the front end for the new site of the recruitment agency Prospectus.
  • Worked on the development of a Shopify website for Jakes of Soho:
  • Developed a Facebook application using the Spotify API. The application allowed users to search for a track inspired by a particular artwork, to comment on that track, and to share it with their friends.
  • Set up and developed the website front end for the photographer, Conor Masterson:
Technologies: .NET, JavaScript, CSS, HTML, PHP, WordPress

Shopify App for Venus Envy (via Queerit)
I provided ongoing support and custom app development for Venus envy, an ethical sex shop based in Canada. I'm currently developing an app for better management of workshops and books products. I'm also maintaining and improving several front-end and theme aspects of the site.

Shopify Development for Darkroom London
I developed the front end (based on Rhonda Drakeford's design), the Shopify theme, and set up the online store for the popular design brand, visited by hundreds of online shoppers daily. I am still maintaining and assisting the website project technically.

Web Application Development for Secret Squirrels
I served as the lead developer of this online platform for a mystery dining company called Secret Squirrels which is used by hospitality companies such as Pizza Express, Byron Burgers, Yo Sushi, and The Breakfast Club. The application was used by thousands of subscribers and restaurant visitors, submitting feedback regularly via the application's interface.

Development included registration and booking, questionnaire data collection and manipulation, generation of online and PDF graphs, feedback/messaging system, integration of third-party components such as restaurant reviews.

James Black Management Promotional Website

I built a WordPress website for James Black's Opera Artist Management company, showcasing information about the artists and its events. The project was initially developed with ExpressionEngine, from which I then migrated the data to WordPress.

Online Event Meeting Management Platform

An online tool for managing meetings in telecommunication conferences used by media companies such as Hitachi, Netcracker and Tahola (via the agency Shelton Fleming).

Features include:
• Meeting and attendee management
• Multiple events, dates, and meeting rooms
• Attendee notifications
• Calendar and print views
• Responsive

The project was built with PHP (CakePHP).

Setup and Updates for the Squarespace Site of Erik Iversen (via Queerit)
Squarespace development for Erik Iversen's five rhythms website. I set up parts of the site, such as the events calendar, quotes, and testimonials. I added some of the content, and I put the website live. Some finishing touches were the sliding quotes and animated buttons.

Site Updates and Maintenance for Community Forests International (via Queerit)
I handled the front end and design customizations along with WordPress plugin and theme updates. I also implemented site optimization and maintenance, speeding the site up by 70% along with aiming to improve its SEO results.

Kiyumi Retreats Squarespace Setup
I assisted with the SEO and the technical aspects of the setup for the Squarespace site of the psychedelics ceremonies collective Kiyumi. I also built a basic intranet for them to track information about the participants with Ruby on Rails.
2005 - 2006

Master of Science Degree in Arts and Computing

Goldsmiths, University London - London, UK

2000 - 2004

Bachelor's Degree in Visual Arts and Art Sciences

University of Ioannina - Ioannina, Greece


Introduction to Counseling Skills

Minster Centre


Ruby Programming Nanodegree



jQuery, API Development, Shopify API, React


Atom, Sublime Text, Slack, Shopify Plus


Ruby on Rails (RoR), CakePHP, ASP.NET, .NET


WordPress, Shopify, Amazon Web Services (AWS), MacOS, Magento


PHP, HTML, CSS, JavaScript, Sass, Ruby




Test-driven Development (TDD), Concurrent Programming, Parallel Programming


Squarespace, WordPress Themes, WordPress Plugins, ExpressionEngine, Responsive Web Apps, APIs, CSS3 Animation, Google SEO, Booking Apps, Shopify Theme

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