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vijayvenkatreddy Kumbam - Sr Java Full Stack Developer

[email protected]

Location: , , USA

Relocation: Yes, depends upon duration of the project and work culture

Visa: GC-EAD

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Senior Full Stack Java Developer Kumbam Vijay Venkat Reddy Email: [email protected] Contact: +1-(856) 800-1429 LinkedIn: https://www.linkedin.com/in/vijayvenkat-reddy-kumbam/ PROFESSIONAL SUMMARY: Results-driven Senior Full Stack Java Developer with over 10 years of progressive experience in delivering enterprise-grade applications across sectors including Finance, Healthcare, Aviation, and Fintech, demonstrating proficiency in Java, Spring Boot, Micro-services, Angular, React, Hibernate, RESTful APIs, and GCP/AWS cloud deployments. Collaborated with Project Lead and guided Architecture decisions and mentored developers cross-functional teams in delivering secure, scalable solutions for regulated industries Proven success in delivering high-performance micro-service based systems using Spring Boot, leveraging RESTful APIs, and implementing robust security protocols using Spring Security, OAuth2, and JWT, ensuring seamless integration across distributed architectures while meeting demanding business requirements. Designed and implemented scalable, Reactive Web Applications using Angular, React.js, and JavaScript, combined with back-end logic in Java and Spring, which significantly improved performance, maintainability, and user engagement across multiple production deployments. Led back-end services development using Java 8/11/17, Spring Boot, Kafka, and RabbitMQ, with deep integration into cloud platforms such as Google Cloud Platform (GCP) and Amazon Web Services (AWS), enhancing service resilience and minimizing downtime across core systems. Demonstrated hands-on expertise in containerized development and deployment through Docker, Kubernetes (K8s), and orchestration tools like Helm and Terraform, enabling infrastructure as code (IaC) principles and facilitating consistent CI/CD pipelines via Jenkins, GitHub Actions, and Bitbucket. Architected and maintained database interactions using Hibernate/JPA, and optimized query execution within Oracle, MySQL, PostgreSQL, and MongoDB databases, while integrating Liquibase and Flyway for database migration and schema version control. Hands-on experience deploying microservices on AWS ECS/EKS, leveraging services such as S3, API Gateway, Aurora, Route 53, and ALB, with Infrastructure-as-Code automation via Terraform and Kubernetes (K8s) orchestration. Delivered interactive UI/UX-driven solutions using Angular(8/10/14/16), React.js, HTML5, CSS3, SASS, and TypeScript, paired with component libraries like PrimeNG, Material UI, and Bootstrap, ensuring cross-browser compatibility and responsive mobile-first designs. Hands-on experience in cloud-native architecture by deploying microservices using GCP App Engine, Cloud Functions, Pub/Sub, Firestore, and Cloud SQL, focusing on high availability, scalability, cost-effectiveness, and system observability through Stackdriver and Datadog. Expert in writing reusable, maintainable code adhering to SOLID principles and employing TDD & BDD practices using JUnit, Mockito, PowerMock, TestNG, and Cucumber, thereby increasing test coverage and code stability during rapid feature development. Strong command of Agile/Scrum practices, daily stand-ups, sprint planning, and retrospectives using tools like JIRA, Confluence, and Slack, ensuring continuous delivery and rapid response to changing client requirements while collaborating closely with cross-functional teams. Proficient in setting up and monitoring application performance using New Relic, Splunk, Dynatrace, and Prometheus/Grafana, ensuring SLAs are met and root-cause analysis is swiftly performed for production issues and outages. Integrated third-party APIs and payment gateways such as Stripe, PayPal, Plaid, and FHIR using REST and OAuth standards, enabling secure and efficient data exchange in compliance with HIPAA, PCI-DSS, and GDPR requirements Utilized SQL Server for claims data management and reporting, optimizing stored procedures for real-time adjudication and maintaining HIPAA compliant patient data storage. Played key roles in design discussions, code reviews, architecture planning, and POCs, leveraging modern design patterns, including microservices, Domain-Driven Design (DDD), CQRS, and Event Sourcing, contributing to system modularity and resilience. Provided mentorship to junior developers, conducted pair programming sessions, and facilitated knowledge transfers on Java, Spring, Kafka, and DevOps practices, significantly improving the onboarding experience and code quality within teams. Experienced in migrating monolithic applications to microservices-based architecture and containerized deployments using Docker, Kubernetes, and Cloud Run, which reduced deployment time, improved scalability, and simplified release management. Familiar with CI/CD pipelines, version control, and branching strategies using Git, Bitbucket, and GitHub, automating build and deployment processes with Jenkins, CircleCI, and Azure DevOps, streamlining integration cycles and reducing manual interventions. TECHNICAL SKILLS: Languages Java 8/11/17, JavaScript, TypeScript, HTML5, CSS3, Node.js Frontend Frameworks Angular 8/10/14/16, React.js, Bootstrap, Material UI Backend Frameworks Spring Boot, Spring MVC, Spring Cloud, Spring Security, Hibernate, JPA Microservices Spring Cloud Netflix, RESTful APIs, Zuul, Eureka, Hystrix DevOps & CI/CD Jenkins, Git, GitHub, GitLab CI, Azure DevOps, Docker, Kubernetes, Helm Databases Oracle, MySQL, SQL Server, PostgreSQL, MongoDB Messaging & Streaming Apache Kafka, RabbitMQ, JMS Cloud Platforms GCP, AWS, Azure Testing Tools JUnit, Mockito, PowerMock, Cucumber, Selenium Build Tools Maven, Gradle API Tools Postman, Swagger, OpenAPI Monitoring & Logging ELK Stack, Splunk, Prometheus, Grafana, Dynatrace Version Control Git, GitHub, GitLab Agile Tools JIRA, Confluence, Rally Others OAuth2, JWT, JSON, XML, REST, SOAP, TDD, BDD, API Gateway, SonarQube IDE s Eclipse, IntelliJ, STS (i.e Spring tool suite), VS Code PROFESSIONAL EXPERIENCE: Client: First Citizens Bank Charlotte, NC Aug 2023 Present Role: Sr. Java Full Stack Developer Responsibilities: Developed a suite of high-performance, modular Spring Boot micro-services for the private mortgage lending platform, handling loan origination, underwriting, and portfolio-backed lending workflows with low latency and horizontal scalability. Utilized Java 17, multi-threading, and stream APIs to optimize back-end computations for amortization scheduling, debt-to-income ratio calculations, and credit analysis, improving loan processing throughput by 15%. Designed and consumed RESTful APIs using Spring MVC and OpenAPI standards, enabling seamless integration between mortgage origination systems, wealth management portals, and core banking services. Integrated back-end services with Google Cloud Pub/Sub to enable asynchronous event handling for real-time loan status updates, document processing, and compliance notifications. Configured and managed user authentication flows using Spring Security and Okta's SAML integration, enabling centralized credential management and enforcing multi-factor authentication (MFA) policies. Refactored legacy mortgage processing modules into Domain-specific micro-services, reducing system complexity, improving maintainability, and increasing application responsiveness by 20%. Utilized GCP BigQuery and Cloud Spanner for analyzing mortgage portfolio performance, customer payment behavior, and cross-selling opportunities across wealth management products. Designed interleaved tables and optimized secondary indexes in Cloud Spanner to reduce query execution time for borrower look-ups and loan eligibility checks. Used Spanner Query Optimizer Hints to fine-tune complex mortgage reporting queries and improve performance during month-end closings. Defined custom IAM roles for loan officers, auditors, and reviewers to enforce least-privilege access across cloud systems. Introduced column-level security policies in BigQuery to protect confidential borrower and credit bureau data. Built MuleSoft ETL pipelines to cleanse and transform loan, rate, and customer datasets during GCP migration, ensuring high-quality, schema-validated data ingestion into Cloud Spanner and BigQuery. Integrated Redis caching layer to handle frequently accessed mortgage rate data and client profile information, significantly reducing database load and accelerating response times for loan officers. Collaborated with Cloud Architects to provision and scale lending services using Google Kubernetes Engine (GKE) and Terraform, ensuring high availability and disaster recovery for critical mortgage operations. Led the implementation of CI/CD using GitLab Pipelines, Docker, and ArgoCD for automated testing, security validation, and controlled promotion of lending applications to production. Spearheaded the migration of on-premise mortgage lending workloads to Google Cloud, enabling elastic scaling and reducing infrastructure costs through right-sizing and auto-scaling policies. Enhanced system observability by integrating services with Stackdriver logging and monitoring, enabling proactive detection of application issues and transaction failures in the mortgage pipeline. Built highly dynamic and responsive Angular 14 components for visualizing client loan portfolios, mortgage dashboards, and payment tracking systems using RxJS and Reactive state management. Built custom Angular directives and pipes to enforce UI/UX consistency and enhance data presentation across dashboards. Wrote comprehensive unit and integration tests using JUnit5 and Mockito, covering loan calculation engines, document verification services, and payment processing workflows with over 90% test coverage. Utilized Swagger for auto-generating API documentation and maintained strict version compatibility to support internal banking systems and third-party credit bureaus. Conducted performance testing using Apache JMeter to validate system behavior under high loan application volumes, optimizing JVM performance for critical lending operations. Worked closely with BA and Product Owners to translate mortgage lending requirements into technical solutions that comply with banking regulations and enhance customer experience. Collaborated with compliance teams to define structured XML schemas and metadata mappings in Tridion Docs for mortgage, underwriting, and KYC document types. Configured SonarQube for code quality, Inspection, Identifying and remediating security vulnerabilities across the Core engine rules module and Compliance engine in mortgage platform. Environment: Java 17, Spring Boot, Spring Security, Spring MVC, Hibernate, JPA, Angular 14/16, RxJS, TypeScript, HTML5, CSS3, GCP (Google Kubernetes Engine, Cloud Functions, Cloud Spanner, BigQuery, Pub/Sub, Stackdriver), Mulesoft, REST APIs, OAuth2, JWT, Redis, Docker, GitLab CI/CD, ArgoCD, Swagger/OpenAPI, JUnit 5, Mockito, Apache JMeter, IntelliJ IDEA, Postman, Agile/Scrum, UML, Microservices Architecture, Domain-Driven Design, JSON, YAML, Terraform, Bitbucket, Maven, Splunk, Linux. Client: Maxim Healthcare - Columbia, MD Jan 2022 Jul 2023 Role: Sr. Java Full Stack Developer Responsibilities: Engineered RESTful micro-services in Java 11 with Spring Boot and JPA to manage end-to-end claims lifecycle, from prescription validation to benefits verification and real-time adjudication. Implemented Event-Driven Architecture using Apache Kafka to stream claim processing events between prescription submission, provider validation, and pharmacy approval layers. Optimized queries with Hibernate Criteria and Native SQL, resulting in a 10% improvement in database response times for claim lookup & historical data views. Developed batch upload modules for pharmacy partners to submit bulk claim data in flat files or Excel format, parsing and persisting them using Spring Boot Batch frameworks. Configured AWS Lambda for asynchronous data cleanups and built automated schedulers for claim expiration and batch job retries using Spring Batch and Quartz. Orchestrated microservices on AWS EKS (EC2, VPC) with IAM security and implemented a centralized Keycloak authentication system to manage HIPAA-compliant access for patients, pharmacies, and administrators. Migrated and optimized claims data schemas within PostgreSQL, enhancing performance for real-time adjudication and complex reporting workflows. Integrated MongoDB for semi-structured claim documents, enabling faster retrieval of historical claim audit trails and prescription notes through Spring Data MongoDB. Utilized SQL Server for claims data management and reporting, optimizing stored procedures for real-time adjudication and maintaining HIPAA compliant patient data storage. Enabled auditing and traceability by implementing structured logging with Log4j and ELK Stack, capturing end-to-end request paths and errors for security compliance. Deployed containerized microservices to AWS ECS/EKS clusters, integrating with API Gateway, Aurora RDS, Route 53, and ALB for highly available cloud-native solutions. Automated builds and deployments via Jenkins pipelines, SonarQube integration, and Artifactory publishing, ensuring consistent releases and quality gates across all environments. Deployed containerized applications via Docker and Amazon ECS, ensuring high availability, auto-scaling, and health checks integrated with AWS CloudWatch metrics. Integrated Swagger/OpenAPI specifications and versioning strategies to maintain stable contract exposure for mobile apps, internal tools, and partner APIs. Designed React.js based frontend components with reusable hooks and Redux for member portals, allowing users to track refill status, upload prescriptions, and manage payment preferences. Managed role-specific content in the UI (e.g., Pharmacy, Member, Admin) via centralized access control mappings from backend claims engine to React based component rendering. Created unit, integration, and mock test suites using JUnit, Mockito, and Postman, covering service logic, controller endpoints, and external provider integrations. Integrated jQuery UI components for modal dialogs and form validation enhancements in admin and pharmacy management screens. Collaborated with QA and UAT teams to define acceptance criteria, mock test environments, and regression automation pipelines for major claim and policy modules. Worked with Product Managers to refine Agile user stories, design mockups with UI/UX teams, and map user journeys for optimal experience in the refill flow. Delivered 100% on-time delivery for 6 quarterly enterprise releases, addressing over 300+ JIRA tickets spanning enhancements, bug fixes, refactors, and critical defect resolutions. Environment: Java 11, Spring Boot, Spring Batch, Spring Security, Hibernate, JPA, React.js, Redux, TypeScript, HTML5, CSS3, AWS (Lambda, ECS, EKS, VPC, RDS, S3, CloudWatch), PostgreSQL, SQL Server, MongoDB, Kafka, Redis, Quartz Scheduler, Docker, Jenkins, Git, SonarQube, JIRA, ELK Stack (Elasticsearch, Logstash, Kibana), Swagger/OpenAPI, Postman, JUnit, Mockito, SQL, PL/SQL, Python (for analytics scripting), IntelliJ IDEA, REST APIs, JSON, OAuth2, JWT, Agile Scrum, Feature Flags, LaunchDarkly, Nexus, Artifactory, Fortify, Check marx, Linux. Client: Delta Airlines Atlanta, GA Jan 2019 Dec 2021 Role: Sr. Java Developer Responsibilities: Developed scalable Spring Boot microservices for flight crew rostering, automating assignment based on qualifications, availability, and FAA compliance regulations, replacing legacy Excel-driven systems. Integrated Java 8, Spring Data JPA, and Oracle 12c to design efficient ORM-based services and complex entity relationships, eliminating manual conflicts in crew assignments. Built REST APIs to expose crew data to internal apps and mobile portals, with end-to-end CRUD, filtering, and validation capabilities for scheduler dashboards. Migrated legacy SOAP XML integration's to modern JSON REST-based services, improving system interoperability and reducing third-party integration time by 20%. Refactored over 12 monolithic Java services into 6 independent microservices, resulting in improved development velocity and easier deployment flows. Tuned SQL queries and introduced Batch processing logic to process over 10,000 crew records per job run in under 3 minutes. Designed backend job orchestration for overnight crew reshuffling using Quartz Scheduler, streamlining flight disruption handling due to delays or cancellations. Implemented Spring Security with OAuth2 and internal LDAP for secure authentication and access management between crew managers and HR interfaces. Enabled Dynamic rule configuration for FAA compliance by creating an externalized configuration service, allowing business teams to adjust rules without code changes. Collaborated with FAA consultants to ensure digital crew scheduling met regional compliance laws, including duty-hour rules and rest period calculations. Containerized services with Docker and deployed to AWS ECS Fargate, enabling seamless horizontal scaling and reduced downtime during schedule re-runs. Utilized AWS SNS Simple Notification Service to send notifications about crew schedule updates and flight assignments to internal applications and mobile portals, improving communication efficiency across teams. Worked with Angular 10 front-end team to consume APIs for flight search, crew visualization, and substitution approvals via real-time REST endpoints. Integrated Swagger UI for each service, enabling testers, mobile developers, and BA teams to interact with APIs directly from Dev/staging environments. Wrote comprehensive JUnit and Mockito tests for controller, service, and DAO layers, achieving 92% test coverage and significantly reducing production bugs. Mentored 3 junior developers and contributed to team documentation, onboarding playbooks, and reusable code repositories. Participated in Agile Methodology stand-ups and sprint reviews, contributing estimations and technical strategies for major release cycles and quarterly deployments. Environment: Java , Spring Boot, Spring Security, JPA, Hibernate,Oracle 12c , Kafka, Angular 10, REST APIs, OAuth2, LDAP, Redis, Docker, AWS ECS, Fargate, SNS, JIRA, Jenkins, Quartz Scheduler, ELK Stack, iText, Swagger, Git, IntelliJ IDEA, Agile Scrum, Postman, SOAP UI Client: Qualinsys Hyderabad, India Jan 2017 Aug 2018 Role: Sr. Java Developer Responsibilities: Contributed to full-stack development using Java 8, Spring MVC, and JSP/Servlets, enhancing QMS modules like Corrective Actions, Non-Conformance Reports (NCRs), and Document Control. Integrated Hibernate ORM for seamless data mapping and automated DDL generation across Oracle DB schemas to manage thousands of audit trail records. Implemented dynamic rule-based form validations using JavaScript and jQuery, improving user experience and enforcing input consistency across quality check workflows. Developed admin-level access control logic based on user roles, restricting SOP visibility, document access, and CAPA workflows using Spring Security. Optimized performance of multi-tabbed audit dashboards by restructuring SQL joins and indexing, reducing page load time from 7 to under 2 seconds. Enhanced reporting modules with JasperReports to enable users to export compliance metrics in PDF and Excel formats, including audit scores and escalation logs. Created batch jobs for scheduled compliance emails, NCR escalations, and supplier follow-ups using Spring Scheduler and custom triggers. Participated in cross-functional meetings with QA experts and GMP consultants to understand regulatory expectations and convert them into technical workflows. Developed and consumed SOAP-based XML web services using JAX-WS to facilitate data exchange between internal service within the QMS module. Implemented version control using Git, managing release branches and coordinating code merges for multiple in-flight features on short deadlines. Deployed and managed Spring MVC applications using JBoss Developer Studio and JBoss EAP Server, configuring WAR deployments and resolving runtime dependencies within the enterprise environment. Used Oracle PL/SQL procedures to create stored functions for audit severity mapping, risk calculations, and compliance reporting logic. Resolved over 150+ JIRA issues including bug fixes, CRs, and urgent escalations related to customer audit failures and SOP mismatches. Worked in a team of 6 developers and coordinated with BA and QA teams to prioritize daily tickets and perform hotfixes when needed. Environment: Java 8, Spring MVC, JSP, Servlets, Hibernate, Oracle DB, JavaScript, jQuery, AJAX, JBoss Server & Studio, PL/SQL, JasperReports, CSS3, Git, JIRA, Eclipse, Apache POI, XML, Agile Scrum, Windows Server, SOAP/XML Client: Spandana Spoorty Financial Limited Hyderabad, India Aug 2015 Dec 2016 Role: UI Developer Responsibilities: Engineered responsive user interfaces (UIs) for major financial applications, including loan applications and repayments, primarily using HTML5, CSS3, and JavaScript. Integrated the front-end with REST APIs using AJAX calls to retrieve dynamic customer data and update the screen instantly, which improved the user experience. Developed a consistent design across all financial forms by creating and maintaining a set of reusable jQuery-based components such as date pickers and modals. Modernized older application screens by applying better methods like Semantic HTML and CSS Flexbox, ensuring the application met current UI standards and reduced code clutter. Designed and implemented complex multi-step forms for key processes, including KYC and loan eligibility checks, backed by rigorous JavaScript validations for data accuracy. Delivered functional dashboards for loan officers showing status updates and key metrics, and integrated the Google Maps API to provide branch and ATM location services. Collaborated with QA and product teams to make UI improvements based on user feedback, and actively supported basic accessibility features like keyboard navigation. Environment: HTML5, CSS3, JavaScript, jQuery, AJAX, Bootstrap 3, JSON, REST APIs, Google Maps API, Photoshop, Illustrator, Visual Studio Code, Internet Explorer, Firefox, Chrome, Windows OS, Git, Agile Scrum Education Details: B.Tech in Computer Science - Lovely Professional University, 2016 Keywords: continuous integration continuous deployment quality analyst business analyst user interface user experience javascript sthree database procedural language Georgia Maryland North Carolina