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Modernization of Legacy Developer Platform with Scala Migration and End-to-End Testing Enhancements

scalac.io

Information technology

Software development

Data & analytics

Legacy System Limitations and Testing Constraints

Legacy Java codebase causing frequent errors during maintenance, particularly in end-to-end testing components. Limited testing capabilities with predefined building blocks ('ProduceToKafka', 'ConsumeFromKafka', etc.) and inability to run testing pipelines in private environments. High maintenance costs and scalability challenges in existing architecture.

About the Client

Remote all-in-one developer platform company specializing in Apache Kafka tooling, serving global clients

Modernization and Feature Expansion Goals

Migrate 38+ endpoints from Java to Scala within 3-month timeframe
Implement smart migration proxy with dual-version execution capability
Expand testing building block library by 50%
Develop private environment execution functionality for testing pipelines
Establish audit logging system for system-wide activity tracking

Core System Modernization Requirements

Smart migration proxy with A/B testing capabilities
Typed JSONB encoding/decoding API using Quill
gRPC bidirectional streaming communication
Modular customer portal architecture
Role-based user management system

Technology Stack Requirements

Scala

Java

PostgreSQL

gRPC

Quill

Kafka

System Integration Needs

Apache Kafka ecosystem
PostgreSQL database
Existing CI/CD pipelines

Operational Requirements

High availability architecture
Enterprise-grade security protocols
Horizontal scalability
Real-time monitoring dashboard
99.9% system uptime SLA

Expected Business Outcomes

Successful migration of 65%+ endpoints within timeline, 40% reduction in maintenance-related errors, and 30% faster feature deployment cycles. Enables private environment testing capabilities for enterprise clients while maintaining backward compatibility with legacy systems.