Manish Kumar

• Architected a distributed event-driven microservices architecture across 5 Spring Boot services, boosting platform processing throughput by 35%.
• Engineered a fault-tolerant message streaming pipeline using Apache Kafka and Transactional Outbox/Inbox patterns, guaranteeing 99.999% reliability.
• Spearheaded zero-trust security infrastructure using Spring Security, JWT token rotation, and fine-grained RBAC.

Skills: Java, Spring Boot, PostgreSQL, Kafka, Microservices

• Directed the architectural overhaul of core administrative microservices using Java 17 and Spring Boot, driving a 30% increase in system throughput.
• Eliminated read-path latency spikes by designing multi-tier Redis distributed caching strategies.
• Optimized relational datastores via MySQL query refactoring, composite indexing, and Hibernate fetch tuning.

Skills: Java 17, Spring Boot, MySQL, Redis, Microservices

• Led backend system design for high-throughput messaging infrastructure processing millions of daily WhatsApp and SMS transactions across 50+ microservices.
• Architected distributed streaming ingestion workflows using Apache Kafka, decoupling event producers and absorbing peak traffic bursts.
• Orchestrated cloud infrastructure scaling on AWS (EC2, ECS, CloudWatch) with Docker, lowering operational spend by 15%.

Skills: Java, Spring Boot, Apache Kafka, AWS, Elasticsearch

• Designed core transactional auditing modules using Java, Spring Boot, and Hibernate, guaranteeing ACID compliance.
• Reduced relational database query latency by 40% through query plan optimization and JPA batch fetching tuning.

Skills: Java, Spring Boot, Hibernate, MySQL, PostgreSQL

• Engineered enterprise routing workflows utilizing Apache Camel, reducing message routing latency by 30%.
• Integrated WhatsApp Business APIs and webhook endpoints, increasing messaging reach by 50%.

Skills: Java, Spring Boot, Apache Camel, ActiveMQ, REST APIs

SAP

Skills: Java, SAP