Sidhartha Gummadavelli

Enterprise Event-Driven Backend & Microservices Engineering

• Developed and maintained RESTful APIs in Java using Spring Boot, following object-oriented principles and SOLID design patterns for modularity and maintainability.
• Built event-driven applications using AWS EventBridge, Kinesis, and Lambda, integrated with API Gateway and DynamoDB for seamless, real-time data processing.
• Tuned SQL queries and procedures in Oracle for optimal performance, reducing latency on key reporting modules.
• Configured CI/CD pipelines with GitLab CI, integrating SonarQube for code quality and Black for Python formatting enforcement.
• Implemented authentication and authorization using Spring Security with OAuth2 and JWT tokens, enforcing role-based access control.
• Used Redis for caching frequently accessed data, improving application response time and lowering DB load.
• Participated in Agile ceremonies and worked closely with cross-functional teams to break down epics into deliverable user stories.
• Mentored junior developers and reviewed code to ensure adherence to clean code standards.
• Developed unit and integration tests with JUnit and Mockito; also contributed BDD test scenarios using Cucumber.
• Monitored production services using AWS CloudWatch with custom metrics, logs, and alerting.
• Used Terraform and CloudFormation to manage infrastructure-as-code for IAM, VPC, Lambda, and API Gateway.
• Authored and maintained Swagger documentation for all developed APIs.
• Utilized Docker to containerize microservices for local and test environments, supporting ECS deployment.
• Executed Postman tests for manual API validation and shared environment collections with QA teams.
• Collaborated with security teams to implement API hardening techniques including throttling, logging, and error masking.

Customer-Facing Systems and Lightweight Frontend Integration.

• Built and deployed Spring Boot microservices for transactional processing and inventory management, using PostgreSQL and MySQL as data backends.
• Developed Angular components for dashboards and admin interfaces, integrating with secured REST APIs.
• Used AWS Lambda, API Gateway, and DynamoDB to build lightweight, serverless services in an event-driven context.
• Deployed containerized apps to ECS using task definitions and security groups configured for compliance.
• Optimized data layer performance through index tuning and query refactoring for frequent analytics queries.
• Built CI/CD pipelines with Jenkins to automate build, test, and deployment cycles.
• Used OAuth2 and IAM-based access control to secure web interfaces and backend APIs.
• Implemented Redis caching to offload frequently accessed product and store metadata from the database.
• Authored detailed Postman test collections for internal API QA and onboarding documentation.
• Contributed to team-wide adoption of BDD practices through Gherkin scenario writing and Cucumber-based automation.
• Used GitLab for source control and merge requests, ensuring traceable commit history with JIRA story links.
• Wrote stored procedures in PostgreSQL for encapsulating multi-step business logic.
• Deployed and updated infrastructure components using CloudFormation stacks and S3-based artifact storage.
• Performed manual regression testing and data validation for release cycles with internal QA.
• Collaborated in sprint retrospectives and story grooming to improve estimation and team productivity.

Cloud-First Digital Transformation Projects (React + AWS + Python)

• Built scalable web applications using React.js with Redux and integrated them with secured RESTful APIs.
• Engineered backend services in Java and Python for enterprise clients, following microservices architecture and modular development.
• Implemented event streaming using AWS Kinesis, with processing through Lambda functions and storage in DynamoDB and S3.
• Secured APIs and web apps using JWT and Spring Security, aligned with client-specific SSO implementations.
• Designed MongoDB and Cassandra schemas optimized for horizontal scalability and fast reads.
• Wrote comprehensive unit tests using JUnit, Mockito, and property-based tests in Python.
• Contributed to CI/CD pipelines using GitHub Actions to automate tests, builds, and Docker deployments to EKS.
• Used Terraform for automated provisioning of AWS resources, including IAM, VPC, RDS, and CloudWatch configurations.
• Developed Gradle multi-module builds and custom tasks for automated testing and packaging.
• Led internal code walkthroughs and contributed reusable utilities and base templates across multiple projects.
• Logged and monitored application performance using CloudWatch metrics, dashboards, and alarms.
• Worked closely with security auditors to apply API-level security headers, throttling, and data masking.
• Collaborated in cross-functional Agile teams to deliver sprint goals and documented REST specifications.
• Refactored legacy applications into containerized microservices using Docker and deployed via EKS.
• Provided onboarding support and mentorship for new team members during cloud migration initiatives.