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Analytics Platform

ProLead - Lead Intelligence & Analytics Platform

Role
Full-stack Developer
Period
07/2018 – 02/2022
Client
ProSeller AG

95%

of manual data collection eliminated

5 min

CSV import of 1000+ companies, down from 8 hours

10K+

analytics requests processed monthly

99.2%

uptime

A comprehensive full-stack web application that aggregates and analyzes multi-source lead data with real-time Google Analytics integration, advanced filtering, and subscription billing management.

Project scope

Greenfield project architected and developed as a complete full-stack solution, spanning from database design through API development to user-facing admin dashboards. The application processes high-volume lead data with real-time analytics integrations and multi-account support.

Responsibilities

  • Built complete Google Analytics API integration with advanced request builder for dynamic segmentation and custom metrics reporting
  • Designed and implemented RESTful APIs with Doctrine ORM for complex data relationships and multi-tenant architecture
  • Developed admin dashboard interface leveraging Sonata Admin Bundle with role-based access control and custom filtering capabilities
  • Created data export functionality supporting multiple formats (PDF, CSV) with WkHtmlToPdf integration
  • Integrated Chargebee subscription billing system with recurring payment processing
  • Built dynamic menu system with form-driven configurations for customizable user experiences
  • Implemented command-line utilities for batch data processing and system maintenance
  • Optimized database queries and implemented caching strategies for high-performance reporting

Outcomes & results

The platform successfully launched as a multi-tenant SaaS solution handling 100+ concurrent user accounts processing real-time lead intelligence from multiple data sources. Integration with Google Analytics API and Chargebee billing system enabled automated revenue operations and eliminated 95% of manual data collection processes. The system now processes an average of 500+ API requests daily with 99.2% uptime, delivering immediate business insights through the admin dashboard.

Key accomplishments

  • 8 distinct service integrations built and deployed: Google Analytics API, Google API Client, Chargebee, Facebook Graph SDK, DataCollector API, URL dereferencing service, export service, and callout service
  • 15+ custom Entity classes designed supporting complex relationships: Accounts, Users, Companies, Websites, Subscriptions, Tags, Filters, Consumptions, Media galleries, and Settings with multi-tenant isolation
  • Real-time analytics query builder processes 10K+ requests/month converting complex filter rules into optimized Google Analytics Reporting API queries with segment support
  • Batch import system processes 1000+ company records in single CSV import operation with automatic duplicate detection and relationship mapping, reducing manual data entry time from 8 hours to 5 minutes
  • Data export pipeline generates on-demand PDF/CSV reports for 500+ monthly exports with custom templating, reducing reporting manual work from 3 hours per report to under 1 minute
  • Subscription lifecycle management automates 100+ monthly billing transactions across multiple plans with capability-based feature access control, eliminating manual provisioning errors

Skills gained

  • Third-party API integration and authentication
  • Complex database schema design and ORM optimization
  • RESTful API architecture and design patterns
  • Enterprise-level admin panel development
  • Payment processing and subscription billing
  • Data export and reporting systems
  • Docker containerization and deployment
  • Performance optimization and monitoring