Mahaboob Shaik

About Mahaboob Shaik

Experienced and performance-focused Java Developer with over 5 years of hands-on…

Experience

1. Software Engineer

   Visa

   Dec 2023 — Present · Austin, TX, US

   Domain: FinTech | Digital Payments | Transaction Processing Systems | Cloud‑Native Enterprise Applications- Designed and developed secure, high‑performance microservices using Java 17, Spring Boot, Spring Security, and Spring Data JPA to drive scalable financial transaction processing in compliance with industry standards- Crafted responsive and dynamic web interfaces with React.js and Redux, integrating with RESTful APIs to enhance user engagement and support evolving digital payment platforms- Implemented real‑time messaging by integrating Apache Kafka, facilitating asynchronous, event‑driven communication across distributed systems- Deployed cloud‑native applications on AWS and GCP (using services such as Lambda, EC2, S3, RDS, DynamoDB) to achieve high availability, auto‑scaling, and cost‑effective cloud architectures- Streamlined CI/CD workflows with Jenkins, Git, Maven, Docker, and Helm to ensure faster, reliable delivery cycles- Managed container orchestration with Kubernetes (K8s) for automated, zero‑downtime deployments and self‑healing clusters- Optimized backend performance using query tuning, asynchronous processing, and caching strategies with Redis and local caching- Developed and integrated both REST and GraphQL APIs to enable robust integration with third‑party services and cross‑platform communication- Maintained data integrity and efficient access across multiple databases, including MySQL, Oracle, and MongoDB- Actively participated in Agile/Scrum ceremonies, contributing to collaborative planning sessions and sprint retrospectives- Ensured high code quality through comprehensive unit and integration tests using JUnit and Mockito- Established observability using Prometheus, Grafana, CloudWatch, and Kibana for real‑time system monitoring and troubleshooting.