Java Full-Stack Developer - Spring Boot + AWS - 3+ yrs

Daaly Harshith Koppaka

Houston, TX 713-***-**** ********.*******.**@*****.*** LinkedIn

PROFESSIONAL SUMMARY

Full Stack developer with 3+ years of experience designing and delivering scalable microservices and cloud-native applications across enterprise technology and marketing platforms. Strong expertise in Java (8–17), Spring Boot, REST APIs, React.js, Angular, and Apache Kafka. Experienced in building secure, high-performance systems integrated with AWS (EC2, S3, and RDS), PostgreSQL, Oracle, Redis, and Snowflake, supporting high-volume transactional and customer data workloads. Proven ability to implement CI/CD pipelines using Docker, Kubernetes, and Jenkins, optimize API performance, and enforce OAuth2, JWT, and role-based access control (RBAC) security standards. Skilled in Agile/Scrum environments, delivering scalable and reliable enterprise applications aligned with modern system design and cloud architecture principles. PROFESSIONAL EXPERIENCE

Epsilon USA

Full Stack developer Apr 2025 – Present

• Designed backend services using Java 17, Spring Boot, and REST APIs, integrating AWS RDS (PostgreSQL) and Redis, contributing to 5 production microservices supporting campaign segmentation and audience filtering workflows.

• Developed responsive campaign management interfaces using React.js, TypeScript, and Redux Toolkit, implementing reusable components and validation logic across 4 modules used by approximately 50 internal users.

• Integrated frontend and backend layers through RESTful APIs and structured request handling, standardizing data exchange across 15 application endpoints to ensure consistent campaign configuration processing.

• Implemented authentication and authorization using OAuth 2.0, JWT, and AWS Cognito, securing 18 protected API routes handling consent-based customer engagement data.

• Optimized database performance using PostgreSQL, Hibernate/JPA, and indexing strategies, reducing average API response time from 1.9 seconds to 820 milliseconds across high-traffic endpoints.

• Refactored legacy components into microservices architecture integrated with Apache Kafka, enabling event-driven processing for approximately 700K+ daily customer interaction records.

• Containerized applications using Docker and automated deployments with Jenkins and GitHub Actions, supporting structured releases across 3 AWS environments with deployment windows averaging 40 minutes.

• Integrated analytics data flows with Snowflake via secure REST APIs, enabling synchronized reporting workflows across 3 campaign analytics modules.

• Consumed Machine Learning inference APIs within backend services to enable audience scoring logic across 6 active campaign configurations without increasing API latency thresholds. Dell Technologies India

Full Stack developer Jun 2020 – Dec 2022

• Developed enterprise-grade backend services using Java 11, Spring Boot, and REST APIs, integrating with Oracle DB and MySQL to support order lifecycle management workflows processing 250K+ hardware and services transactions annually across API.

• Engineered dynamic user interfaces with Angular 9, TypeScript, and Bootstrap, enhancing internal supply-chain dashboards used by 200+ operations stakeholders for real-time order tracking and inventory visibility.

• Integrated distributed systems using Apache Kafka and Spring Cloud, enabling asynchronous communication between 18 microservices supporting procurement, billing, and logistics orchestration platforms.

• Optimized data access layers leveraging Hibernate/JPA, advanced indexing, and query tuning techniques, reducing database execution time for 40 high-volume APIs servicing global configuration tools.

• Automated build and deployment workflows using Maven, Jenkins, and Git, coordinating cross-functional release cycles across 5 environments and delivering 10 production releases within defined SLA windows.

• Spearheaded migration of legacy monolithic modules to microservices architecture deployed on Docker and Kubernetes, improving scalability for infrastructure provisioning services handling 7500+ monthly provisioning requests.

• Collaborated with cloud engineering teams to integrate applications with AWS EC2, S3, and RDS, contributing to hybrid-cloud enablement initiatives supporting 9 enterprise infrastructure programs.

• Championed secure coding practices by embedding Spring Security, OAuth 2.0, and role-based authorization controls across customer-facing portals managing enterprise account configurations for 60+ strategic clients.

• Guided onboarding of 4 junior developers by conducting code reviews, enforcing Agile/Scrum practices in Jira, and standardizing API documentation through Swagger/OpenAPI, strengthening delivery consistency across 8 sprint cycles. TECHNICAL SKILLS

• Programming Languages: Java (8–17), JavaScript (ES6+), TypeScript, SQL, Python

• Backend Development: Spring Boot, Spring MVC, Spring Security, Hibernate/JPA, RESTful APIs, Microservices

• Frontend Development: React.js, Angular (v10+), HTML5, CSS3, Bootstrap, Material UI

• Web Services & Integration: REST APIs, JSON, WebSockets, API integration

• Databases: PostgreSQL, MySQL, Oracle, MongoDB, Redis

• Messaging & Streaming: Apache Kafka, event-driven architectures

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

• DevOps & CI/CD: Docker, Kubernetes, Jenkins, GitHub Actions, GitLab CI

• Build & Package Tools: Maven, Gradle, NPM/Yarn

• Version Control: Git, GitHub, GitLab

• Testing & QA: JUnit, Mockito, Selenium, Cypress, Postman

• Security Fundamentals: JWT, OAuth2, CORS, OWASP Top 10 awareness

• Monitoring & Logging: ELK Stack, Prometheus, CloudWatch

• System Design & Architecture: Microservices design, RESTful architecture, performance and scalability EDUCATION

Lamar University, Beaumont, TX - Master of Science in Management Information Systems Jan 2023 - Dec 2024 PROJECTS

Intelligent Study Planner with Gen-AI Flashcard Automation

• Built a full-stack application using React.js, Spring Boot, and REST APIs to manage study schedules and generate AI-assisted flashcards across modular subject workflows.

• Integrated OpenAI API with LLM-based text generation to dynamically create structured flashcards from uploaded notes, automating manual content preparation through prompt engineering and parsing logic.

• Designed backend architecture using PostgreSQL, JWT authentication, and Role-Based Access Control (RBAC), implementing secure API endpoints and maintaining consistent sub-2 second response times during functional testing. SMS Spam Detection Using NLP & Machine Learning

• Built an end-to-end NLP pipeline using Python, scikit-learn, and TF-IDF vectorization to process and classify 5,500+ SMS records for spam detection.

• Trained and optimized Logistic Regression, Naïve Bayes, and Random Forest models, achieving 96 accuracy and reducing false positives across validation datasets through hyper parameter tuning.

• Implemented model evaluation using cross-validation, confusion matrix, and F1-score analysis, deploying the final model via Flask API for real-time classification with response latency under 500 milliseconds. CERTIFICATIONS

AWS Certified Solutions Architect

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