Senior Java Full-Stack Engineer with Cloud & DevOps

Sai Kandulapati

+1-512-***-**** *************@*****.*** LinkedIn: linkedin.com/in/saikikan

PROFESSIONAL SUMMARY

Full Stack Java Engineer with 5+ years of experience designing and building scalable, high-performance distributed applications using Java, Spring Boot, and microservices. Proven expertise in developing REST and GraphQL APIs, along with modern frontend technologies including React, Angular, TypeScript, and Node.js to deliver seamless end-to-end solutions. Strong background in cloud platforms such as AWS and Azure, with hands-on experience in DevOps practices including CI/CD, Docker, Kubernetes, and observability. Experienced in Agile/Scrum environments, with a track record of delivering reliable, secure, and production-ready systems across domains like financial services, healthcare, and insurance.

PROFESSIONAL EXPERIENCE

Charles Schwab – Austin, TX

Java Full Stack Engineer Feb 2024 – Present

• Architected and deployed full stack microservices using Spring Boot and Azure App Services/AKS to support secure financial transactions.

• Developed reactive REST APIs and event-driven workflows with Kafka, improving response latency and throughput across distributed systems.

• Partnered with product and UI teams to align sprint deliverables with roadmap goals, ensuring scalable and maintainable full stack delivery.

• Integrated React and TypeScript components with backend APIs to streamline workflow experiences and enhance frontend responsiveness.

• Automated CI/CD using Azure DevOps and GitHub Actions with Git-based version control, enabling secure, zero-downtime deployments.

• Centralized observability using Prometheus, Grafana, and ELK, reducing incident detection time by 40% through end-to-end monitoring.

• Optimized PostgreSQL and MongoDB queries, improving data access speed and scalability for real-time financial data workflows.

• Prototyped small-scale LLM integrations to enable AI-driven personalization and intelligent search across unstructured data.

Verizon – Irving, TX

Senior Software Engineer Aug 2023 – Jan 2024

• Delivered cloud-native Spring Boot microservices on AWS (EKS, Lambda, EC2, S3, RDS) powering telecom billing and order-management platforms at scale.

• Developed Angular-based operational dashboards for real-time billing analytics to improve visibility for business stakeholders.

• Modernized legacy JSP/JSTL modules into modular Angular components, improving maintainability and UI consistency across platforms.

• Built Kafka pipelines and AWS SQS queues to enable asynchronous, event-driven communication across billing, CRM, and reporting systems.

• Enhanced CI/CD pipelines using Jenkins, GitHub Actions, SonarQube, and Docker, improving release velocity and deployment reliability.

• Re-architected core systems into scalable, event-driven microservices, improving fault tolerance and resilience under high traffic.

• Configured IAM roles, CloudWatch monitoring, and auto-scaling policies to reinforce system security and operational stability.

• Collaborated closely with cross-functional teams to enforce secure coding practices, performance optimization, and release governance.

Tata Consultancy Services – Hyderabad, India

Software Development Engineer Sep 2020 – Dec 2021

• Developed Spring Boot microservices integrated with Kafka and JMS for high-throughput messaging across healthcare and insurance platforms.

• Implemented AWS services (S3, EC2, Lambda) for data exchange, report generation, and workload automation.

• Designed, tested, and maintained REST APIs for enrollment, eligibility, and claims processing, diagnosing and resolving production issues to ensure high availability.

• Tuned PostgreSQL and Cassandra queries to accelerate transactions and ensure data integrity and high availability in multi-region AWS deployments.

• Executed Agile sprints with JUnit and Mockito testing, delivering production-grade releases through automation and peer review.

DBS Bank – Hyderabad, India

Java Backend Engineer Jun 2019 – Aug 2020

• Built Spring Boot microservices powering core banking workflows including customer onboarding and account management.

• Integrated internal systems with third-party payment gateways using secure REST APIs.

• Implemented Kafka and RabbitMQ messaging to enable real-time transaction notifications.

• Improved backend performance through PostgreSQL and Oracle query optimization, reducing latency 25%.

• Collaborated with QA and DevOps to automate testing and release validation, reducing manual deployment effort.

TECHNICAL SKILLS

Programming: Java (8/11/17/21), Python, TypeScript, JavaScript, SQL, Bash/Shell

Frontend: React, Angular, HTML5, CSS3, RxJS, Bootstrap

Backend & APIs: Spring Boot, Spring MVC, Spring Security, OAuth2, JWT, RBAC, Microservices, REST, GraphQL, Hibernate/JPA, Node.js, Express, OpenAPI/Swagger

Messaging & Streaming: Kafka, RabbitMQ, JMS

Cloud Platforms: AWS (EKS, EC2, S3, RDS, Lambda), Azure (AKS, App Services)

Containers & Orchestration: Docker, Kubernetes, Helm

Databases & Caching: PostgreSQL, MySQL, Oracle/PLSQL, MongoDB, Cassandra, DynamoDB, Redis

DevOps & CI/CD: Jenkins, GitHub Actions, Azure DevOps, Terraform, ServiceNow, Maven, Gradle, SonarQube, Git

Testing: JUnit, Mockito, Postman/Newman, Integration Testing, Contract Testing

Observability: Prometheus, Grafana, ELK (Elasticsearch, Logstash, and Kibana), AWS CloudWatch

Architecture & Delivery: Event-driven architecture, API Gateway, Resilience patterns, DDD, SDLC, Agile/Scrum

AI-Assisted Engineering: ChatGPT, GitHub Copilot, Prompt Engineering, RAG, Vector DBs (Pinecone, FAISS), LLM evaluation, Claude

EDUCATION

• Master’s degree in data science (Jan 2022 – Dec 2023) – University of Houston, Houston, TX

• Bachelor of Technology in Computer Science Engineering (May 2016 – Apr 2020) – Gitam University, India

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