Senior Full-Stack Engineer - Java/Spring/NestJS

S V S S N KASHYAP HARSHA

Full Stack Engineer

*****************@*****.*** 571-***-**** USA LinkedIn

Summary

Results-driven Full Stack Engineer with 4+ years of experience designing, developing, and deploying enterprise-grade web and middle-tier applications. Proven expertise in building scalable RESTful APIs with Swagger documentation using Java, Spring Boot, Angular, and TypeScript, implementing CI/CD pipelines, and optimizing system performance in AWS environments. Strong background in full-stack development with Angular, React, and NestJS, combined with hands-on experience in containerization (Docker/Kubernetes) and software engineering best practices including design patterns and process improvements. Demonstrated ability to deliver high-quality solutions in Agile Scrum environments while collaborating effectively with cross-functional teams.

Technical Skills

Programming Languages: Java, TypeScript, JavaScript, Python, SQL

Backend Frameworks: Spring Boot, Spring MVC, Hibernate/JPA, Microservices Architecture, RESTful APIs, NestJS, Node.js, Swagger/OpenAPI

UI & Frontend: Angular, ReactJS, TypeScript, HTML5, CSS3, Bootstrap, Redux

Cloud & DevOps: AWS (S3, Lambda, EKS, RDS, DynamoDB, IAM, CloudWatch, CloudTrail), Docker, Kubernetes

CI/CD & Version Control: Jenkins, Maven, Gradle, GitHub (pull requests, collaborative development), Git

Testing & Automation: JUnit, Mockito, Selenium, Cucumber (BDD/ATDD), Serenity, Karma, Log4J, Apache Kafka

Databases: Oracle, MySQL, PostgreSQL, MongoDB, DynamoDB, SQL Server

Methodologies & Collaboration: Agile (Scrum), Sprint Planning, Daily Stand-Ups, Retrospectives, Design Patterns, Process Improvements, Mentoring, Cross-Functional Team Collaboration

Professional Experience

Full Stack Engineer, Mercury Insurance 01/2024 – Present Remote, USA

• Architected and developed 15+ microservices for core policy, claims, and billing systems using Java, Spring Boot, and NestJS, resulting in 40% improved system scalability and 30% reduction in response time

• Designed and implemented 25+ RESTful APIs with Swagger/OpenAPI documentation and comprehensive security controls using Spring Security and OAuth, serving 100K+ daily transactions with 99.9% uptime

• Built dynamic, responsive front-end features using Angular and TypeScript with component-based architecture, applying design patterns to improve maintainability and user engagement across enterprise web applications

• Engineered data persistence layer using Hibernate/JPA with relational (MySQL, Oracle) and NoSQL (DynamoDB, MongoDB) databases, optimizing query performance by 45% through strategic indexing and caching

• Containerized 20+ applications using Docker and orchestrated deployments on Kubernetes clusters, achieving 60% faster deployment cycles

• Established robust CI/CD pipelines using Jenkins, Maven, and GitHub with pull request workflows, automating build and deployment processes that reduced manual deployment time by 70% and decreased production bugs by 35%

• Deployed and maintained scalable applications on AWS infrastructure (EC2, S3, Lambda, RDS, EKS, DynamoDB), implementing IAM security policies and CloudWatch monitoring

• Implemented event-driven architecture using Apache Kafka for real-time data streaming, handling 50K+ messages per minute with zero data loss

• Developed comprehensive unit test suites using JUnit, Mockito, and Selenium, achieving 85%+ code coverage and reducing post-deployment defects by 40%

• Mentored 3 junior developers on software engineering best practices, code review standards, and Agile Scrum ceremonies, driving process improvements across the team

Full Stack Developer, Tata Consultancy Services 03/2020 – 01/2023 Chennai, India

• Developed 12+ Spring Boot microservices with REST API design and Swagger documentation serving customer-facing Angular and React applications built with TypeScript, supporting 50K+ active users daily

• Built dynamic, responsive UI components using Angular and TypeScript with state management, improving user engagement by 35% and reducing bounce rate by 20%

• Integrated third-party payment and authentication systems via REST APIs with comprehensive error handling and validation, processing 10K+ transactions daily

• Optimized SQL queries and database indexes for Oracle and SQL Server, reducing query execution time by 50% and improving overall application performance by 30%

• Created Jenkins CI/CD pipelines with GitHub-based pull request reviews for automated builds and deployments to QA and production environments, reducing deployment time from 4 hours to 30 minutes

• Developed comprehensive test scripts implementing BDD methodologies using Cucumber and Selenium with Serenity reporting, achieving 90% test automation coverage

• Led cloud migration initiatives, creating AWS CloudFormation templates for development and QA stacks, successfully migrating 5+ applications to cloud infrastructure

• Collaborated with business partners and cross-functional teams to design new features, driving process improvements that enhanced application reliability and reduced defect rates by 25%

Education

George Mason University — Fairfax, Virginia, USA

Master of Science in Information Systems 01/2023 – 12/2024

Gandhi Institute of Technology and Management — Visakhapatnam, India

Bachelor of Technology in Electronics and Communication Engineering 06/2016 – 06/2020

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