Java Developer Big Data

Harshita Dandyala

******************@*****.***; 660-***-****

Professional Summary

Experienced Full Stack Java Developer with 6+ years of expertise in developing and maintaining scalable enterprise applications using Java, Spring Boot, Hibernate, and RESTful APIs. Skilled in front-end development with HTML5, CSS3, Bootstrap, jQuery, React.js, and building responsive, accessible user interfaces. Strong background in working with Oracle 12C, PL/SQL, and developing microservices architectures integrated with JBoss, Kafka, and AWS. Proficient in unit testing (JUnit, Mockito), CI/CD processes, and containerized deployments using Docker and Kubernetes. Adept at Agile methodologies and collaborating across cross-functional teams to deliver high-quality, secure, and maintainable solutions.

Category

Skill

Backend / Core Java & Frameworks

Core Java, Spring Framework (Boot, MVC, Data, Cloud), JPA / Hibernate, Microservices Architecture, RESTful API Development and Integration, Oracle 12C, PL/SQL, SQL, Redshift, Hive, HBase, JDBC, JSP, JSTL, Apache Tiles

CRM & SharePoint

Microsoft Dynamics CRM, Power Apps, SharePoint Online, SPFx, Power Platform

Cloud & Big Data

AWS (S3, Lambda, Glue, Athena, etc.), Kafka, Cloudera Hadoop, Spark, Hive, Databricks, Scala, Akka, Microsoft Azure (Basic), AWS IAM, Encryption Policies

DevOps & Build Tools

Maven, Gradle, Docker, Kubernetes, AWS CDK, CloudFormation, CI/CD Pipelines, JBoss Developer Studio, Splunk, CloudWatch

Frontend / UI Technologies

HTML5, CSS3, Bootstrap, JavaScript, jQuery, jQuery UI, DataTables, AJAX, D3.js (Data Visualizations), UI/UX Best Practices, AngularJS, React.js (basic)

Reporting & Visualization

JasperReports, D3.js

Testing & Logging

JUnit, Mockito, Log4j, Comparative Testing

Experience

Amazon,

Software Development Engineer August 2023 - PRESENT

●Designed and developed scalable, secure microservices using Java, Spring Boot, and Python for personalization systems, integrating Tracer ref tags and optimizing eBook OPS.

●Built high-performance distributed systems with Scala and Akka, ensuring fault tolerance and throughput for real-time recommendation processing.

●Migrated SQL scripts to Scala during Cradle Builds transition, implemented code changes, and executed comparative testing for integration validation.

●Developed cloud-native data pipelines using Cloudera Hadoop, Spark 3.0, Hive, and HBase to process and analyze large-scale Kindle/Appstore datasets.

●Created and managed Hive tables with partitioning and indexing for performance-optimized analytics and reporting workflows.

●Integrated Hive with SQL Server and other relational databases for unified big data pipeline operations and analytics.

●Leveraged Kafka for real-time, event-driven architectures in CRM automation and recommendation personalization use cases.

●Used AWS Glue, S3, Athena, Lambda, EventBridge, Step Functions, and Databricks for cloud-based ETL, orchestration, and business logic execution.

●Automated infrastructure provisioning using AWS CloudFormation and AWS CDK, and implemented CloudWatch metrics and dashboards for observability.

●Built and managed CI/CD pipelines using Docker, Kubernetes, Maven, and Gradle to ensure consistent deployment across all environments.

●Integrated Microsoft Dynamics CRM and Power Apps with AWS-hosted services for unified customer data across enterprise platforms.

●Improved web application responsiveness and accessibility using Bootstrap, jQuery, and UI/UX best practices across Kindle, Fire Tablet, iOS, and Windows devices.

●Developed and maintained Oracle 12C PL/SQL scripts, configured JBOSS Enterprise services, and implemented logging/monitoring using Log4j.

●Generated business reports using JasperReports in PDF/Excel formats to support analytics and operations.

●Created D3.js visualizations to showcase real-time user behavior on Kindle and Appstore, driving UI insights and strategic decisions.

●Led bi-weekly Scrum ceremonies, trained new developers, coordinated EHR-like system integrations, and conducted POCs on upgraded big data technologies like ElasticSearch and Delta Lake

California High-Speed Railway, Sacramento[remote]

Sharepoint Developer and Farm Admin May 2023 - August 2023

●Provided comprehensive user support and resolved issues in SharePoint Online environment.

●Implemented custom solutions and extensions using SharePoint Framework (SPFx).

●Developed and maintained PowerShell scripts for automation and task management.

●Designed and implemented SQL Server databases to support SharePoint data needs.

●Leveraged Microsoft Power Platform to automate business processes and create insightful reports.

●Collaborated with stakeholders to analyze requirements and design effective SharePoint solutions.

●Conducted migrations(on-prem to SharePoint Online), creating, designing, and maintaining sites, site collections, web parts, content types, lists, libraries, workflows, InfoPath forms, security groups, and customizations, generated custom reports, and performed audits using various third-party tools, patching, maintenance.

●Contributed to infrastructure support, including Active Directory integration and DNS management.

Vista Applied Solutions

Big Data Developer March 2023-May 2023

●Designed and developed robust data pipelines using Java, supporting distributed processing for customer personalization features.

●Built scalable, fault-tolerant streaming data pipelines with Kafka and Spark Streaming, processing millions of events per second.

●Streamlined ingestion of semi-structured data into Cloudera Hadoop using custom Python scripts integrated with AWS services.

●Developed and maintained data lake architectures with AWS S3, Glue, and Redshift to enhance data availability and analytics readiness. Created RESTful APIs for real-time data ingestion and transformation within a microservices-based architecture.

●Improved performance of complex queries in Redshift and Hive through advanced partitioning, bucketing, and indexing techniques.

●Monitored, tuned, and debugged Hadoop jobs in Cloudera Manager to ensure high availability and optimal cluster utilization.

●Utilized HBase and Hive for scalable, high-throughput querying and storage of structured and semi-structured data.

●Integrated Cloudera components with AWS Glue for seamless data flow between on-prem and cloud systems.

●Designed and deployed real-time data models in HBase to power low-latency personalization features.

●Leveraged Python and Spark to automate ETL workflows and reduce manual intervention in data processing pipelines.

●Collaborated with analytics teams to provision large datasets from Cloudera Hadoop for ML model training and validation.

●Created interactive data visualizations using D3.js to present analytics insights and improve business decision-making dashboards.

●Ensured secure, scalable data operations using IAM roles, encryption policies, and cross-platform integrations.

●Integrated Appian and Cloudera platforms to drive automated business process flows and reporting capabilities. Applied Agile practices and participated in daily standups, sprint reviews, and backlog grooming to deliver high-quality data solutions.

Northwest Missouri State University

Bearcat Caller and Developer January 2022 - December 2022

●Conducted phone outreach to alumni, donors, and stakeholders to secure financial contributions.

●Developed strong communication and persuasion skills, achieving a 90% increase in donor engagement, and was awarded Best Early Entry – President’s Club Member for exceptional performance in alumni engagement and fundraising efforts.

●Maintained accurate donor records and call logs in the university’s CRM system.

●Built positive relationships with alumni to strengthen their connection with the university.

●Consistently met or exceeded weekly fundraising goals.

●Designed and developed Java-based applications to enhance data processing efficiency.

●Created web applications using React and Node.js to streamline user interactions.

●Integrated CRM systems with internal software improve workflow automation.

●Worked on big data solutions using Kafka and Spark for real-time analytics.

●Developed and optimized SQL queries to improve database performance.

Mindtree, Hyderabad Client : Micorsoft

Engineer September 2018 - August 2021

●Configured and deployed enterprise Java applications using JBoss Developer Studio, managing server profiles, datasources, and deployment artifacts.

●Developed responsive front-end interfaces using HTML5, CSS3, Bootstrap, and DataTables, ensuring accessibility and consistent UX across devices.

●Implemented interactive UI features using jQuery and jQuery UI, such as modals, date pickers, and autocomplete components.

●Wrote and optimized PL/SQL scripts on Oracle 12c for high-transaction systems, ensuring performance and data accuracy.

●Integrated Log4j for application-level logging and monitored logs for debugging and production issue resolution.

●Built and maintained unit test suites using JUnit and Mockito to ensure high code quality and minimize regression.

●Generated business reports using JasperReports with data from Oracle DB, enabling real-time PDF output for stakeholders.

●Applied UI/UX best practices in front-end development, ensuring mobile responsiveness and clean navigation flows.

●Used Apache Tiles for templated view layouts in legacy JSP modules, improving modularity and maintainability.

●Participated in all Agile SCRUM ceremonies; contributed across SDLC phases including requirement gathering, design, and deployment.

●Integrated RESTful APIs and handled JSON data binding to enable seamless communication between UI and backend services.

●Supported cloud migration testing between AWS and Azure, evaluating scalability, performance, and cost trade-offs.

●Collaborated with Azure DevOps teams to align CI/CD processes and pipelines across multi-cloud environments.

●Applied networking concepts like DHCP and TCP/IP to maintain reliable microservice communications.

●Built scalable backend microservices using Java and Spring Boot, ensuring modular design and high availability.

●Developed persistence logic with Spring and Hibernate, optimizing database access using ORM strategies.

●Designed and implemented web UIs using JSP, JSTL, AJAX, JavaScript, and integrated with AngularJS for modernized frontend components.

●Used Spring MVC, Spring Cloud, and ngRx for stateful Angular apps; enabled scalability with RESTful API integration.

●Improved deployment efficiency with Docker and Kubernetes, architected loosely coupled Angular modules deployed via AWS S3 and CloudFront.

●Diagnosed and resolved production issues using Splunk, CloudWatch, and server log analysis; established secure connections using SSL certificates

Education

August 2021 - December 2022

Northwest Missouri State Engineer, Missouri - Applied Computer Science

August 2014 - April 2018

Gudlavalleru Engineering College - Computer Science and Engineering

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