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Harish Vembu User

@harishvembuuser

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Senior Java/J2EE architect and full-stack developer focused on scalable systems.

United States

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What I'm looking for

I seek senior engineering or architecture roles building secure, scalable cloud-native systems, driving modernization, mentoring teams, and delivering measurable business value.

I am a senior Java/J2EE architect and full-stack developer with 20+ years building scalable, low-latency, cloud-ready enterprise applications across banking, healthcare, retail, telecom and supply chain domains. I have led development, architecture and migration efforts using modern Java (8–21), Spring Boot, microservices, Actimize, and cloud platforms including AWS, Azure and GCP.

I deliver secure, production-grade solutions—designing APIs, performance tuning JVM applications, integrating enterprise systems (Kafka, MQ, Redis, ElasticSearch), and mentoring teams. I drive modernization projects (JDK upgrades, frontend migrations to Angular/React), CI/CD and DevOps practices to achieve reliable, maintainable outcomes.

Experience

Work history, roles, and key accomplishments

Sr. Full Stack Java Developer

US Tech Solutions

Apr 2023 - Apr 2025 (2 years)

Architected and developed Spring Boot microservices and Actimize IFMX integrations for PNC Bank's fraud prevention platform, migrated codebases from JDK 8 to 17/21, and improved performance via Redis caching and Elasticsearch integration.

Spring Boot Actimize RESTful APIs Redis Elasticsearch Kubernetes AWS React

Sr. Full Stack Java Developer

Insight Global LLC

Oct 2022 - Apr 2023 (6 months)

Developed and modernized RenewVue renewal-management platform using Spring Boot microservices, Spring Batch, and Angular; implemented integrations with vendor APIs, Kafka data feeds, and cloud deployments on AWS/GCP.

Spring Boot Angular Kafka AWS GCP Docker Kubernetes

Sr. Full Stack Java Developer

Apex Systems

Mar 2022 - Sep 2022 (6 months)

Built Spring Boot microservices and Angular frontends for KeyBank digital banking, migrated legacy SOAP services to REST, and deployed services to Azure with CI/CD and API management.

Spring Boot Angular Azure Apigee OAUTH2 Redis GraphQL

Sr. Lead Full Stack Developer

Tek Systems

Aug 2021 - Feb 2022 (6 months)

Led a team of full-stack engineers to deliver Angular UI and Spring Boot microservices for Capital One card campaigns, implemented AWS-based deployments, KMS/CyberArk key management, and performance tuning.

Spring Boot Angular AWS ECS KMS Lambda Docker Jenkins Redis Microservices & Security

Sr. Java Developer

Conduent

May 2020 - Jul 2021 (1 year 2 months)

Developed Spring Boot microservices, Oracle SOA integrations, and Kafka/JMS consumers for EPPIC-GO Medicaid payment platform; implemented PCI-compliant tokenization and modernized legacy J2EE components.