Stack Developer Spring Boot

SAI VIKAS GUMPENA

Java Full Stack Developer

San Francisco, CA Open for relocation to Seattle, WA Dallas, TX Chicago, IL New York, NY *****************@*****.*** 314-***-**** http://www.linkedin.com/in/svg2308/ SUMMARY

• Java Full Stack Developer with over 5 years of experience architecting, developing, and deploying large-scale, high- performance enterprise and government applications.

• Specialized in Java 17/11, Spring Boot, RESTful APIs, and microservices architecture, with strong frontend experience using React.js and Redux Toolkit.

• Demonstrated hands-on expertise with AWS services including Lambda, EC2, API Gateway, RDS, and DynamoDB, along with Docker and Terraform for cloud infrastructure automation.

• Proficient in implementing robust security mechanisms using OAuth2, JWT, and Spring Security, and building reliable CI/CD pipelines with GitHub Actions, Jenkins, and AWS CodePipeline.

• Highly experienced working in Agile/Scrum environments, collaborating with DevOps, QA, and UX teams to ensure seamless feature delivery and end-to-end system integration.

• Known for analytical problem-solving, attention to detail, backend modernization, and consistently delivering impactful, secure, and scalable solutions in high-demand production settings. PROFESSIONAL EXPERIENCE

Amazon (Amazon Q Developer) June 2024 – Present

Software Development Engineer San Francisco, CA

• Spearheaded backend development using Java 17, Spring Boot, and RESTful APIs to power AI-driven code review and code generation pipelines, reducing manual coding efforts by 70% across engineering teams.

• Modernized legacy Java 8/11 monoliths into microservices architecture, leveraging Amazon Q Code Transformation, achieving 1,000+ application upgrades in under 72 hours using automated refactoring.

• Designed and deployed secure, high-performance services on AWS Lambda, ECS, and API Gateway, enabling serverless, scalable processing with 99.99% availability and sub-second response times.

• Implemented OAuth2-secured microservices with JWT-based token management, reducing authentication vulnerabilities by 60%, aligned with OWASP standards.

• Engineered frontend UI panels using React.js, Redux Toolkit, and Bootstrap to enable real-time interaction with GitHub- integrated AI agents, enhancing user engagement by 40%.

• Optimized cloud infrastructure using DynamoDB (NoSQL) and Amazon Aurora (PostgreSQL) for concurrent access, ensuring

<50ms query response under high-load conditions.

• Developed CI/CD pipelines with GitHub Actions, AWS Code Pipeline, and containerization via Docker, achieving 80% faster deployments and rollback efficiency across multi-region environments.

• Collaborated on full-stack integration of Amazon Q Developer with GitHub Issues API and IDE toolkits, delivering seamless developer experience across VS Code, JetBrains, and CLI-based agents.

• Conducted advanced unit and integration testing with JUnit 5, Mockito, and React Testing Library, increasing test automation coverage to 92% and reducing post-release bugs by 45%.

• Led backend performance optimization using AWS CloudWatch, X-Ray, and Prometheus, improving API throughput by 35% and cutting error rates by 50% during production spikes. Accenture (Singpass Digital ID Platform) March 2019 - July 2023 Java Full Stack Developer India

• Spearheaded the development of enterprise-grade microservices using Java 11, Spring Boot, and REST APIs, supporting secure digital identity operations for over 4.5 million citizens.

• Designed and implemented high-throughput authentication modules (OAuth2, JWT), enabling biometric login across 700+ government and private sector apps, reducing login failures by 60%.

• Migrated legacy services to cloud-native architecture using AWS EC2, Lambda, API Gateway, improving system scalability by 2.5 and reducing infrastructure cost by 35%.

• Engineered RBAC and session tracking systems, enhancing platform security and enabling real-time threat monitoring; contributed to zero critical vulnerabilities post-deployment.

• Developed responsive and accessible UIs using React.js, TypeScript, and Bootstrap, delivering a 95% mobile usability score and tripling active user sessions.

• Integrated with Amazon RDS (PostgreSQL) and DynamoDB, designing optimized schemas and queries that supported 350M+ annual transactions with sub-200ms response times.

• Automated deployments and environment setups via Docker, Terraform, and AWS CodePipeline, reducing release timelines from 2 weeks to 2 days.

• Led performance tuning and cache optimization (Redis, CDN), resulting in a 40% faster page load time and 99.99% service uptime during peak demand.

• Collaborated cross-functionally with DevOps, cybersecurity, and UX teams in an Agile/Scrum environment, accelerating feature rollout by 45% year-over-year.

• Contributed to the platform's recognition as a global model for digital governance, playing a key role in its 350 million+ annual secure identity authentications.

TECHNICAL SKILLS

Programming & Scripting: Java 17/11/8, JavaScript, TypeScript, Python (automation/scripts), Bash, Shell Scripting, JSON, XML Frontend Development: React.js, Redux Toolkit, Bootstrap, TypeScript, HTML5, CSS3, Webpack, Responsive Design, WCAG 2.1 Compliance, React Testing Library

Backend & API Development: Spring Boot, Spring Security, RESTful APIs, OAuth 2.0, JWT, Microservices Architecture, MVC Design Pattern, API Gateway, RBAC, Session Management Databases: Amazon DynamoDB, Amazon Aurora (PostgreSQL), Amazon RDS (PostgreSQL/MySQL), SQL, NoSQL, Redis (caching), Schema Design & Query Optimization

Cloud & DevOps: AWS (EC2, Lambda, ECS, S3, API Gateway, RDS, CloudWatch, X-Ray, Secrets Manager, IAM), Docker, Terraform, GitHub Actions, AWS CodePipeline, CI/CD Pipelines Monitoring & Logging: AWS CloudWatch, AWS X-Ray, Prometheus, ELK Stack (Elasticsearch, Logstash, Kibana), Error Tracking, Performance Profiling

Testing & QA: JUnit 5, Mockito, React Testing Library, Integration Testing, QA Automation, Test Coverage, Unit Testing, TDD, Postman

Security & Access Management: Spring Security, OAuth 2.0, JWT, RBAC, SSO Integration, SSL/TLS, IAM Roles, AWS Secrets Manager

Version Control & CI/CD: Git, GitHub, GitHub Actions, Jenkins, Docker, AWS CodePipeline, Maven, Agile-based CI/CD Workflows

Project Management & Methodologies: Agile, Scrum, Jira, Confluence, Daily Stand-ups, Sprint Planning, Cross-Functional Team Collaboration, Code Reviews

Operating Systems: Linux (Ubuntu, Amazon Linux), Windows, Unix-based Systems Productivity & Utilities: Visual Studio Code, JetBrains IntelliJ, Postman, Git CLI, Technical Documentation, Slack, REST Clients Soft skills: Critical Thinking, Attention to Detail, Problem Solving, Analytical Mindset, Time Management, Adaptability, Agile Team Collaboration, Cross-Functional Communication, Stakeholder Influence, Decision-Making Under Pressure, Ownership & Accountability, Integrity & Confidentiality

EDUCATION

Master of Science in Computer Science

Saint Louis University, MO

PROJECTS

Recruitment Portal SpringBoot, React, MySQL, Docker, GitHub, Maven, CircleCI

• Engineered a web app with 5+ core functionalities like job applications, account creation, and resume uploads, using ReactJS for the frontend to provide a responsive and dynamic user interface.

• Secured portal access by integrating Spring Security, protecting user data & ensuring 100% feature authorization. Integrated a forgot password feature, sending secure reset links via Spring Mail to enhance user account security.

• Implemented CircleCI for continuous integration and delivery, automating the build, test, and deployment processes to ensure code quality and faster delivery cycles.

Claim Management System Spring Boot, React, Microservices, JUnit, Mockito

• Developed a microservices-based claim management system using Spring Boot and React, reducing claim settlement time by 30%.

• Integrated 5+ microservices and implemented 100+ unit tests with JUnit and Mockito, achieving 85% code coverage and ensuring robust functionality.

• Improved UI responsiveness and system uptime to 99.9%, enhancing user experience and enabling seamless claim tracking for 1000+ users.

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