Scalable eCommerce Marketplace
eCommerce project for the German market on Shopify with a special custom application to implement a business model for buying back old phones, refurbishing and selling them through the website, to conserve resources and contribute to the planet’s ecology.
Measured post-launch vs. the previous period - GA4 / Shopify Analytics.
Services used: Custom E-Commerce Solutions · Shopify Development
The Client
Janado is a European eCommerce brand specializing in refurbished electronics, including smartphones, laptops, and accessories.
The platform focuses on making second-life devices accessible through transparent pricing, structured product grading, and reliable delivery across European markets.
The main challenge was to transform a complex refurbished inventory into a clear, trustworthy, and scalable online shopping experience.
Problem Space
Large-Scale Product Catalog Complexity
Thousands of refurbished devices required structured categorization, filtering, and consistent presentation across different product conditions.
Condition-Based Product Logic
Each product had different grades (A / B / C), requiring a transparent system to communicate quality, pricing differences, and expectations.
Trust in Refurbished Products
Users needed clarity and reassurance when buying second-hand electronics online, especially regarding warranty and condition.
Search & Discovery Limitations
Standard Shopify navigation was insufficient for handling complex filtering across device type, specs, price, and condition.
Scalability Constraints
The system needed to support continuous growth in SKU volume without degrading performance.
What we did
UX/UI Design
Designed a clean and intuitive interface for the online store and user dashboard. Focused on clear navigation, simple selling flows, and transparent status tracking for evaluations and shipments.
Platform & Infrastructure
Used Shopify as the core eCommerce platform, providing a secure, cloud-based environment with an intuitive admin panel for managing products, users, and orders
Custom Application Development
Developed a custom Shopify application using React.js and Node.js. Implemented personal user accounts for sellers with features to manage used gadgets and track evaluation and delivery status.
Technical implementation
- Research of design specifics for the German market.
- Preparation of concepts and prototypes.
- Implementation of design and brand book.
- Setting up managers who will work with the site.
- Creating the current catalog.
- Integration of PayPal and Stripe payment systems.
- Integration of DHL postal provider.
- Layout development considering Liquid markup.
- Mobile device adaptation.
- Website installation.
- Requirements gathering, business process description, and development specification writing.
- Application architecture development.
- Custom application implementation.
- Testing and configuration of Shopify application.
- Monitoring business process deficiencies after launch.
- Implementing changes to optimize company business processes.
- Technical project maintenance.
WORKING PROCESS
Mapped the buy-back business: device intake, A/B/C grading logic, and pricing rules.
Shopify-based marketplace with custom apps for grading, pricing, and inventory workflows.
Customer-facing trade-in flow: device assessment, instant quote, DHL shipping label generation.
Custom app automating intake, refurbishment tracking, and re-listing of graded devices.
Go-live with documented workflows and team training sessions.
PROJECT RESULTS
Development of a modern and user-friendly design.
Creation and implementation of a Shopify-based online store.
Integration of a custom Shopify app to optimize the client’s business processes.
Documentation and description of the company’s business workflows.
Training sessions conducted with the client’s team to ensure effective use of the new system.
Tools We Use
Design
- Figma
- Adobe Photoshop
Development
- Shopify Theme
- Shopify App
- Laravel
- JavaScript
- PHP
- My SQL
- HTML5
- CSS3
Janado FAQ
Janado sells refurbished electronics graded by condition (A/B/C), which standard Shopify product structures don't handle well. We built a custom application in React.js and Node.js with personal seller accounts, so sellers can list used devices and track evaluation and delivery status - functionality no off-the-shelf app covered.
We designed product pages that clearly communicate condition grade and pricing differences upfront, plus structured filtering by device type, specs, price and condition - since standard Shopify navigation couldn't handle that level of catalog complexity across thousands of SKUs.
Moving to a cleaner Shopify-based architecture with a custom-built filtering and catalog system, rather than relying on default theme navigation straining under thousands of SKUs across multiple condition grades.
Beyond the Shopify store and custom app, we documented the client's business workflows and ran training sessions with their team, so they could manage sellers, evaluations and inventory independently after launch.
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