Matthias Leu
Verified Expert in Engineering
Shopify Developer
Chiang Mai, Thailand
Toptal member since April 30, 2024
Matthias has an impressive 15-year track record of creating and maintaining successful eCommerce systems. He has expertly built numerous Shopify apps, Vue integrations to Shopify, UI functionalities, and Shopify integrations to 3rd-party providers. Matthias can provide complex front-end solutions and outstanding back-end experiences, which makes him an ideal candidate for full-stack roles.
Portfolio
Experience
Availability
Preferred Environment
Shopify Plus, Shopify API, Shopify Theme, Nuxt.js, Visual Studio Code (VS Code), NPM, Vite, MongoDB, Vue
The most amazing...
...solution I've created is an advanced Shopify-based UI for taking scalp photos and analyzing the resulting data with an AI model hosted on AWS.
Work Experience
Senior Shopify Engineer
Blazar Capital
- Developed over 50 Shopify theme sections using Liquid, HTML5, Vue, and Tailwind CSS, enabling customers to swiftly integrate new features and Figma-based designs into five different Shopify shops.
- Introduced a Vite-based deployment pipeline using Shopify CLI, enabling project bundling and deployment across multiple country shops in seconds.
- Built based Shopify app proxy that allows front-end calls to cryptographically secure API integrations with five different 3rd-party services, boosting customers' CRM capabilities by providing real-time data to their systems.
- Created a Vue-based customer back end to administer subscriptions and orders, replacing the default Shopify account area and improving customer satisfaction by reducing customer service workload.
- Implemented a Vue-based Shopify-integrated app to collect photos of hair characteristics and send them to an AWS-hosted AI model to determine health issues via an AI-based model.
Senior Developer
Croox Cross Over Experts
- Created a data analysis back end that displays accumulated healthcare data for a mobile-based health data tracking app that allows hospitals to track the well-being of their customers.
- Developed a React-based WordPress plugin for managing room rental services, enabling healthcare providers to rent out unused office space.
- Implemented API integrations for accounting software APIs, eliminating data entry tasks for the customer.
Full-stack Developer
Dinnagan Garden Co. Ltd.
- Planned a Vue and Go-based farm management system to manage resources and provide analytical reporting for an organic farm in Thailand, facilitating data acquisition and farm management.
- Created the back end for the system on Go and the front end on Vue.
- Worked with the users to improve UI functionality and ease of use.
Senior Web Developer
BlackSnow ApS
- Overhauled the existing online shop and implemented a complete redesign.
- Implemented a custom check-out system, increasing customer conversion significantly.
- Handled all online shop aspects during its growth phase until the company was sold.
Development Manager
Arvixe
- Built a specific department offering web programming services to hosting customers to increase customer retention.
- Worked on more than 40 homepage use cases to implement customer websites.
- Grew the department to profitability within one year and a half.
Web Developer
Media-Concept Bürobedarf
- Set up two online shops based on the PrestaShop framework.
- Implemented SEO strategies to increase visitor traffic.
- Built API integrations to the central .NET-based API, ensuring fault-free real-time order data synchronization.
Senior Web Developer
COMP-MALL
- Set up, designed, and maintained the company's web presence and online shop for industrial computer hardware.
- Oversaw the entire online sales channel, supervising all related processes and implementations.
- Created APIs with Taiwanese manufacturers, collaborating with their IT side to automatically feed product information to the website.
Software Developer
Capgemini
- Handled the central data-entry business case implementation.
- Collaborated with the testing team to secure process integrity in a team of over 30 developers.
- Acted as the point of contact for the customer testing team, creating valuable solutions and improvements based on their input.
Experience
AI Hair Loss Detection Tool
https://scandinavianbiolabs.com/pages/trichoaiShopify Customer Portal to Administrate Subscriptions and Orders
https://scandinavianbiolabs.com/accountAPI Proxy App for 3rd-party API Integrations
Shopify Quiz App
https://scandinavianbiolabs.com/pages/hair-quizDeployment Pipeline
https://scandinavianbiolabs.comMedical Customer Data Analysis Dashboard
Graph representations leveraged Chart.js and included complex data range zooming. In addition, data storage was implemented through a Parse back-end server.
Education
Diploma in Computer Science
National University of Singapore - Singapore
Master's Degree in Computer Science
Technical University of Munich - Munich, Germany
Skills
Libraries/APIs
Liquid, Vue.js, REST API, Shopify API, Node.js, React.js, Chart.js, SurveyJS
Tools
Shopify Development, PrestaShop, AWS IAM, NPM
Languages
JavaScript, HTML5, HTML, Shopify Liquid, CSS, TypeScript, Java, SQL, GraphQL, Go
Frameworks
Tailwind CSS, Nuxt.js, Express.js, .NET
Paradigms
REST, SEO
Platforms
Shopify, Parse Server, Visual Studio Development, WordPress Development, Parse
Storage
MySQL, MongoDB
Other
Shopify Theme, Web Development, Full-stack, CSS, Custom Shopify Apps, Vite, Algorithms, SEO Tools, ERP Development, Computer Science
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