Scalable E‑COMMERCE 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.
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 order
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
- We collaborated with stakeholders to define business goals, technical requirements, priorities, and critical implementation functions.
- We conducted a full audit of existing systems, codebase, and infrastructure to identify key issues and constraints.
- We developed a structured project plan with clear stages, tasks, timelines, and resource allocation.
- We recruited experienced developers, engineers, and project managers with the right expertise for the project needs.
- We defined clear roles and responsibilities to ensure efficient task ownership across the team.
- We established effective team dynamics to support smooth collaboration and execution.
- We applied Agile (Scrum) methodology to manage the project through iterative development and adaptive planning.
- Work was organized into short sprints with regular releases to ensure steady progress and flexibility.
- Continuous feedback loops with demos, retrospectives, and stakeholder communication allowed fast adjustments and improvements.
- We designed and developed a custom eCommerce store with a focus on usability and conversion-driven UX.
- We implemented the visual design into a fully functional Shopify-based solution.
- We built a custom Shopify app to extend core functionality and support specific business needs.
- We defined a comprehensive testing strategy covering functional, integration, and load testing.
- We implemented automated testing with unit and end-to-end tests, integrated into CI/CD workflows for continuous validation.
- We ensured ongoing quality control through performance monitoring, security checks, code reviews, and audits.
- We identified potential technical and business risks early in the project lifecycle.
- We developed mitigation strategies to minimize the likelihood and impact of these risks.
- We continuously monitored risks and adjusted plans when necessary to ensure project stability.
- We conducted a pilot launch to validate system stability and real-world performance.
- We provided immediate post-release support to address issues and ensure smooth operation.
- We delivered continuous updates and improvements based on user feedback and system monitoring.
- We maintained regular internal communication through project progress updates for management and the team.
- We conducted staff training sessions to ensure effective use of new tools and systems.
- We created and continuously updated detailed technical and user documentation to reflect system changes and new functionality.
- We collected and analyzed customer feedback to continuously improve the product.
- We implemented personalization features to enhance user engagement and overall experience.
- We provided consistent customer support across multiple communication channels to ensure satisfaction and fast issue resolution.
- We analyzed results by comparing achieved metrics with predefined goals to evaluate performance.
- We continuously explored and implemented new technologies and solutions to improve the product.
- We adapted quickly to changing market conditions and business requirements through flexible development approaches.
The project resulted in significant improvements:
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
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Figma
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Adobe Photoshop
Development
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Shopify Theme
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Shopify App
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Laravel
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JavaScript
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PHP
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My SQL
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HTML5
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CSS3
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