Senior Full Stack Java Developer with Spring & Cloud Expertise

LAKSHMAN KUMAR NADIPILLI

Senior Full Stack Java Developer

312-***-**** **********************@*****.*** LinkedIn PROFESSIONAL SUMMARY

• Senior Full Stack Java Developer with nearly 5 years of experience designing, building, and supporting scalable enterprise applications across financial services, healthcare technology, HR tech, and e-commerce domains — with a proven track record of delivering production-grade systems that serve high-volume, business-critical workloads.

• Deep expertise in Core Java 8/11, including strong command of OOP principles, concurrency, Collections framework, Java Streams, Lambda expressions, and JVM tuning — enabling the development of predictable, high-throughput backend systems optimized for performance and long-term maintainability.

• Extensive hands-on experience with the full Spring ecosystem — Spring Boot, Spring MVC, Spring Security, Spring Data JPA, Hibernate, and Spring Batch — for architecting production-grade microservices, RESTful APIs, and event-driven service layers that handle complex business logic reliably.

• Proven ability to design and deliver complete end-to-end full stack features: from responsive, component-driven React.js and Angular frontends to secure, performant Spring Boot backends — keeping UI behavior tightly synchronized with evolving API contracts and real-time data requirements.

• Solid experience with event-driven architecture using Apache Kafka to decouple services, handle asynchronous workflows safely, and absorb traffic spikes — improving system resilience and throughput under peak production load without blocking core application flows.

• Hands-on cloud experience deploying and operating applications on AWS — leveraging EC2, ECS, EKS, Lambda, S3, API Gateway, SNS, SQS, IAM, RDS, DynamoDB, and CloudWatch — with a focus on scalability, cost efficiency, and operational reliability for enterprise-grade systems.

• Practical experience containerizing applications with Docker and orchestrating deployments on Kubernetes — ensuring environment consistency, enabling horizontal scaling, and supporting zero-downtime release strategies across development, staging, and production.

• Strong database engineering background across PostgreSQL, MySQL, Oracle, MongoDB, and AWS DynamoDB — including schema design, query optimization, index tuning, and resolving N+1 and slow-query issues traced from application metrics down to execution plans.

• Experienced implementing application security using Spring Security, OAuth 2.0, JWT, and role-based access control (RBAC) — safeguarding APIs and sensitive data in compliance with financial data governance standards including SOX and PCI-DSS requirements.

• Proficient in building and maintaining CI/CD pipelines using GitHub Actions and Jenkins with integrated SonarQube quality gates, unit test coverage enforcement, and Docker image builds — reducing release cycle times by 25%+ and eliminating manual, error-prone deployment steps.

• Strong monitoring and observability practice using AWS CloudWatch, ELK Stack, Grafana, and Splunk — enabling rapid root cause analysis during production incidents and reducing mean time to resolution (MTTR) through structured logging and distributed tracing.

• Solid testing discipline using JUnit and Mockito for meaningful unit and integration tests, alongside Postman and JMeter for API validation and load testing — consistently improving confidence in complex Kafka-backed, database-driven, and cloud-integrated workflows.

• Active contributor in Agile/Scrum environments — engaging in sprint planning, backlog refinement, daily standups, code reviews, and retrospectives — while mentoring junior developers on backend design patterns, Kafka consumer behavior, JPA pitfalls, and effective production debugging. TECHNICAL EXPERTISE

Languages & Backend: Java, Spring Boot, Spring MVC, Spring Security, Spring Data JPA, Hibernate, RESTful APIs, GraphQL, Microservices, OAuth 2.0, JWT

Frontend: React.js, Redux, Angular, TypeScript, JavaScript ES6+, HTML5, CSS3, Bootstrap, jQuery, AJAX, JSON Cloud & DevOps: AWS (EC2, ECS, Lambda, S3, SNS, API Gateway, CloudWatch, IAM, RDS, DynamoDB), Docker, Kubernetes, GitHub Actions, Jenkins

Databases: PostgreSQL, MySQL, Oracle, MongoDB, AWS DynamoDB, SQL query optimization, indexing, schema design

Messaging & Integration: Apache Kafka, AWS SQS/SNS, REST/SOAP integrations, third-party API integrations, Webhooks

Testing & Quality: JUnit, Mockito, Postman, JMeter, SonarQube, integration testing, load testing Methodologies: Agile/Scrum, CI/CD, SDLC, Code Reviews, System Design, Distributed Systems, Design Patterns

(MVC, Singleton, Factory)

PROFESSIONAL EXPERIENCE

Fidelity Investments Westlake, TX

Full Stack Java Developer June 2024 – Present

• Architected and developed scalable Spring Boot microservices and RESTful APIs powering high-volume financial transaction processing, real-time portfolio reporting, and investment account management workflows for millions of end users.

• Built responsive, data-driven React.js single-page applications (SPAs) for customer-facing investment dashboards, trade history views, and account summary pages — ensuring consistent behavior across browsers and real-time data synchronization with backend APIs.

• Designed and implemented secure authentication and authorization flows using Spring Security, OAuth 2.0, and JWT, enforcing role-based access control (RBAC) aligned with financial data governance and regulatory compliance (SOX, PCI-DSS).

• Engineered event-driven asynchronous processing pipelines using Apache Kafka to decouple high-frequency transaction events from core services, improving system throughput and resilience under peak trading-hour loads.

• Developed serverless backend components using AWS Lambda integrated with S3 event triggers for automated statement generation, scheduled report creation, and batch file ingestion from custodian data feeds.

• Optimized critical backend services and JPA/Hibernate queries, reducing API latency by 30% on high-traffic endpoints by resolving N+1 query patterns, adding strategic database indexes, and implementing Redis-based caching for reference data.

• Implemented centralized structured logging, distributed tracing, and real-time alerting using AWS CloudWatch and ELK Stack, reducing mean time to resolution (MTTR) for production incidents by 35%.

• Automated end-to-end CI/CD pipelines using GitHub Actions with integrated SonarQube quality gates, unit test coverage checks, and container builds, cutting release cycle time by 25% and eliminating manual deployment steps.

• Collaborated cross-functionally with business analysts, compliance teams, and UX designers in Agile/Scrum sprints to translate complex financial business rules into well-defined domain models and maintainable service implementations.

• Contributed to infrastructure-as-code practices using AWS CloudFormation for reproducible ECS deployments, enabling consistent multi-environment (dev, staging, prod) provisioning with minimal configuration drift. WIPRO Ltd. Hyderabad, India

Full Stack Java Developer (Project Engineer) September 2022 – July 2023

• Developed and enhanced core modules of the Bullhorn Applicant Tracking System (ATS), a large-scale enterprise recruiting platform, using Java, Spring Boot, and React.js — directly improving recruiter productivity by 30% through workflow automation and intuitive UI redesign.

• Built and maintained RESTful APIs for candidate lifecycle management, job order workflows, and recruiter activity tracking, ensuring clean service boundaries and consistent data contracts across frontend and backend layers.

• Integrated third-party APIs for resume parsing (Sovren/Textkernel), email and SMS notification services, and secure external authentication via OAuth 2.0, streamlining multi-vendor connectivity within the platform.

• Engineered scalable React.js dashboards for enterprise-level recruiter analytics — including placement pipeline views, candidate status boards, and submission tracking — improving cross-module UI consistency and operational efficiency by 25%.

• Implemented robust backend business logic for complex ATS workflows including candidate deduplication, bulk placement processing, and commission calculation rules using Core Java 8 Streams and Lambda expressions.

• Optimized database query performance by profiling slow SQL queries, refactoring Hibernate/JPA fetch strategies, and introducing result-set caching — reducing average API response latency by 20% across high-frequency recruiter actions.

• Automated the full build, test, and deployment lifecycle using Jenkins CI/CD pipelines with automated unit and integration test execution, minimizing deployment errors and reducing release turnaround time by 25%.

• Participated actively in Agile ceremonies — sprint planning, backlog refinement, daily standups, and retrospectives — while leading code reviews to uphold consistent engineering standards and on-time delivery. HSBC Hyderabad, India

Full Stack Java Developer June 2021 – July 2022

• Contributed to the design and development of a HIPAA-compliant patient health records management platform using Java, Spring Boot, and React.js — enabling secure digital storage, retrieval, and lifecycle management of electronic health records (EHR) for clinical and administrative users across multiple hospital branches.

• Built and maintained RESTful APIs for core healthcare workflows including patient registration, appointment scheduling, medical history retrieval, lab result ingestion, prescription management, and clinical notes — implementing strict input validation and HL7 FHIR-compatible data structures for interoperability with third- party clinical systems.

• Developed responsive React.js user interfaces for patient-facing portals and clinician dashboards — featuring appointment booking flows, real-time lab result displays, medication history views, and secure patient-provider messaging — ensuring accessibility compliance (WCAG 2.1) and consistent behavior across devices.

• Implemented role-based access control (RBAC) using Spring Security and OAuth 2.0 with differentiated access levels for patients, nurses, physicians, and administrators — ensuring strict enforcement of data privacy policies and compliance with HIPAA and healthcare data governance standards.

• Integrated Apache Kafka for asynchronous event-driven communication between healthcare microservices — including real-time lab result notification pipelines, appointment reminder triggers, and clinical alert broadcasting — decoupling services and improving system resilience during high-volume patient intake periods.

• Designed and optimized PostgreSQL database schemas for clinical data storage — including patient demographics, encounter records, diagnostic codes (ICD-10), medication lists, and audit trails — improving complex query performance by 28% through strategic indexing and Hibernate/JPA fetch strategy tuning to eliminate N+1 issues.

• Deployed backend microservices on AWS EC2 with Docker containerization and supported CI/CD pipeline setup using Jenkins — enabling automated test execution, environment-consistent builds, and reliable releases across development, staging, and production environments with minimal manual intervention. Avon Technologies Pvt. Ltd. Hyderabad, India

Full Stack Java Developer Intern December 2019 – August 2020

• Architected and delivered a full-featured e-commerce web platform backend using Java, Spring Boot, and MySQL

— enabling secure product catalog management, dynamic pricing, shopping cart workflows, wishlist functionality, and seamless end-to-end order processing for an online retail business.

• Designed and built RESTful APIs supporting all major storefront operations including product search and filtering, inventory management, order lifecycle tracking, customer account management, and seller dashboard reporting.

• Integrated Razorpay and Stripe payment gateways with server-side payment verification, webhook handling for real-time order status updates, and automated order-confirmation email triggers via AWS SES — delivering a reliable, conversion-optimized checkout experience.

• Built dynamic, conversion-focused frontend interfaces using React.js, featuring product listing grids, detail pages with image carousels, responsive category navigation, promotional banners, and a streamlined multi-step checkout flow optimized for both desktop and mobile.

• Implemented customer-facing features including reviews and ratings, personalized product recommendations

(via a Python ML microservice API), and an analytics dashboard with real-time sales and traffic metrics using React Charts — increasing average session duration by 15% and cross-sell conversion by 18%.

• Optimized MySQL query performance through strategic indexing, query plan analysis, and efficient ORM mappings — reducing peak-hour database load by 22% and improving page response times during promotional traffic spikes.

• Deployed microservices on AWS EC2 using Docker containers with load balancing and health check configurations, conducting rigorous load testing with Postman and JMeter to validate 99.9% uptime SLAs during peak traffic events.

• Applied Spring Security for session management and API protection, implemented CSRF protection, and enforced input validation across all public-facing endpoints to secure the platform against common web vulnerabilities

(OWASP Top 10).

EDUCATION

Illinois Institute of Technology Chicago, IL. May 2025 Master of Science, Computer Science

GMR Institute of Technology Rajam, INDIA May 2023 Bachelor of Technology, Computer Science and Engineering CERTIFICATIONS & PUBLICATIONS

Certifications: Java Full Stack Development (StackRoute) Machine Learning Fundamentals (Internshala) Foundations of AI (SkillUp India)

Publication: YOLO-based Object Detection for Self-Driving Cars — Journal of Advanced Research in Automotive Technology (2021)

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