Sai Teja

Owned end-to-end engineering for the Customer Experience (CX) vertical, delivering 20+ enterprise integrations with CRMs, ERPs, and authentication providers (SAML, ADFS), resulting in a 40% increase in enterprise retention. Re-architected performance-critical backend workflows using Spring Boot and AWS Lambda, achieving a 69% reduction in latency and a 68% improvement in API response times for high-traffic enterprise use cases. Built a configuration-driven document automation and PDF customization framework using Puppeteer and JasperReports, reducing manual effort by 80% and enabling zero-touch reporting for enterprise clients. Designed and implemented a Delegation and Leave Management system from scratch, owning system design, 10+ REST APIs, and a centralized UI to improve workflow continuity for retail managers. Built data synchronization pipelines for BigQuery and Elasticsearch, handling schema design and daily sync of large datasets to improve system visibility and reporting. Developed reusable backend abstractions and integration templates for retail workflows supporting 50,000+ stores, reducing new client integration effort by 35%. Improved system performance and reliability by tuning API, caching, and database layers, introducing Redis-based caching and structured logging to reduce production incident resolution time.

Achieved a 40% increase in customer satisfaction and a 50% increase in retention by building a personalization and decision engine processing 20+ dynamic parameters. Led optimization of admin configuration workflows in a large-scale ecommerce system, reducing latency by 32% and saving $150,000 annually. Developed recommendation algorithms analyzing service offerings and user behavior, reducing customer churn by 40%. Designed backend components with strong extensibility, enabling rapid onboarding of new personalization rules without code changes. Improved backend reliability by optimizing database queries and strengthening validation for configuration-driven workflows.

Architected and delivered a full-scale ecommerce platform for a US-based telecom client using Angular, Spring Boot, microservices, and Docker, increasing new customer acquisition by 33%. Developed an efficient admin configuration system for complex business rules, reducing configuration time by 80%. Implemented RESTful APIs and backend services following clean architecture principles. Contributed across frontend, backend, and deployment pipelines, gaining hands-on experience with production-scale distributed systems.