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• First and foremost, I am a results-driven Hadoop Administrator with 5 years of experience proficiently managing and optimizing Hadoop clusters.
• Proficient in installing, configuring, and maintaining Hadoop clusters in both on-premises and cloud environments.
• Skilled in monitoring cluster performance, conducting capacity planning, and troubleshooting issues to ensure optimal resource utilization and maximum uptime.
• Experienced in implementing security measures such as Kerberos authentication, SSL encryption, and role-based access control (RBAC) to safeguard data integrity.
• Proven ability to optimize cluster performance through performance tuning techniques, job scheduling, and fine-tuning of Hadoop configuration parameters.
• Proficient in managing Vertica, including installation, configuration, and maintenance of the Vertica database.
• Skilled in migrating data from Hadoop to Vertica, ensuring seamless transitions and minimal downtime.
• Expertise in optimizing Vertica database performance, fine-tuning queries, and enhancing overall system efficiency.
• Proficient in implementing backup strategies and recovery procedures for Vertica, ensuring data integrity and minimal data loss in case of failures.
• Experienced in implementing and managing security measures within Vertica to protect sensitive data.
• Proven ability to diagnose and resolve issues related to Vertica, ensuring continuous system functionality.
• Proficiency in scripting languages to automate routine tasks and enhance operational efficiency in Vertica.
• Strong skills in documenting Vertica configurations, procedures, and creating reports for performance analysis and system monitoring.
• Knowledgeable in implementing backup and recovery strategies to minimize downtime and ensure data integrity in the event of system failures.
• Accomplished in optimizing performance issues and adding complex business rules by creating re-usable transformations and robust Mappings.
• Experience in managing the Hadoop infrastructure with Cloudera Manager & Ambari.
• Strong Experience in Installation and configuration of Cloudera distribution Hadoop CDH 5.x., CDH 6.x and CDP 7.X

9 years of IT Experience in Diverse Domains: Extensive background in end-to-end data analytics solutions encompassing Big Data, Hadoop, Informatica, Data Modeling, and System Analysis across Banking, Finance, Insurance, and Telecom sectors.

Data Engineer with over 10 years of experience in designing, developing, and maintaining large-scale, cloud-native distributed systems. Proficient in building ETL/ELT pipelines with Python and PySpark, and orchestrating workflows with Apache Airflow. Experienced in scaling and optimizing large data transformations with Python, SQL, and Spark, and experienced in using Azure Synapse Spark Pools for fast, efficient big data processing. Skilled in building and integrating solutions across AWS and Azure environments, with hands-on expertise in AWS EC2, S3, RDS, and Azure-native services to deliver scalable, secure cloud architectures. Managed complex data warehousing solutions using Snowflake and Azure Synapse Analytics, focusing on schema design, performance tuning, and cost optimization. Proficient in creating interactive business intelligence reports and dashboards with Power BI. Extensive experience in data modeling and database design across relational and NoSQL systems, with strong expertise in writing complex, high-performance SQL queries. Proficient in building ETL workflows with SSIS and developing business intelligence reports with SSRS to deliver end-to-end data solutions. Experienced in Agile development and CI/CD automation, using tools like Azure DevOps and Git, and skilled in containerization and orchestration with Docker and Kubernetes. Focused on maintaining high standards of data quality, security, and governance by implementing best practices with Azure Policy, Azure Security Center, and serverless computing through Azure Functions.

Total 13 Years of Experience in IT industry on which 8 years in Data warehousing with application development and Implementation of ETL tool Data Stage, Informatica and ODI. Have 7 years of experience in Data warehousing ETL tools (Data Stage), Informatica. Have 2 years of experience in Teradata. Have 1+ years of experience in Reporting Tools. Knowledge of Hadoop/Impala/Hive/Airflow. Knowledge of Azure data Lake, Azure Delta Lake, Azure SQL Database, Data bricks, Azure Data factory, Azure Data Lake storage. Solid organizational skills and focus on accuracy and attention to detail. Excellent analytical, problem solving and troubleshooting abilities. Self-motivated with the ability to work both independently and in a team environment. Providing accurate and timely estimates for tasks. Provide support and leadership in critical production support issue resolution. Conduct or facilitate root cause analysis on all in-scope incidents and recommend a corrective action plan. Worked with team to achieve timely resolution of all production issues meeting or exceeding Service Level Agreements. Conducted code review to ensure the work delivered by the team is of high-quality standards. Ability on technically managing the medium to large applications with complete technical ownership. Experienced in handle the design, architecture and implementation. Experienced in performance management of large and complex applications. Strong analytical and problem-solving abilities. Good interpersonal and communication skills and Experience working with all levels of business. Ability to handle complex large applications technically. Establish technical quality processes, templates, checklist for application and ensure delivery with respect to the same. Enhance the quality of deliverables. Experience in producing technical documentation. Provided technical support to the development team. Overall Infosphere DataStage (Developer) experience: 5 years. Experience in Installing, Configuring, Updating and Administering DataStage. End to End IBM InfoSphere Information server suite installation. Understanding the business functionality & Analysis of business requirements. Converted requirement specifications into detailed design and implementation. Design and developed ETL jobs using various stages in server and parallel mode. Extracting data from sources like oracle, Teradata and flat files and transforming them using business logic and loading the data to the Data warehouse. Worked on Slowly Changing Dimensions. Production support, implementation, defect fixing, enhancements activities and release. Worked extensively on different types of stages like CFF stage, Aggregator, Change capture, Copy, Funnel, Join, Lookup, Merge, Remove duplicates, sort, Transformer. Worked on several Development/ Debug stages. Involved in Unit Testing, performance Tuning, support and implementation. Installed IBM InfoSphere Information Server 9.1 on windows 2008 server. Efficient is using Work Load Management server (WLM) and its best practices. Resolved complicated code issues for development team. Granting appropriate privileges to users in DataStage. Established rsh setup by co-coordinating with UNIX admin. Resolved Ssh and rsh connectivity (secondary node for effective communication). Migrated of DataStage components from Development server to QA and Production servers. Creation of new projects and roles setup. Expertise architecting data integration solutions. Worked with development teams, DBA's, Unix admin, network, storage and other technology teams to resolve performance issues with ETL code or database loads.
To obtain a demanding and challenging opportunity that will allow me to leverage my technical skill set in conjunction with my proven leadership record to deliver successful Implementations of technology.

Sai Ratna Sinjitha Appana

Overview

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Wipro
Hyderabad

Job overview

Infosys
Hyderabad

Job overview

Education

Shri Vishnu Engineering College For Women
Bhimavaram

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Timeline

Associate Consultant

Systems Engineer

Shri Vishnu Engineering College For Women

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