Power Bi Business Intelligence

SAHITHI KOMMINENI

214-***-**** ️ *******.***********@*****.***

PROFESSIONAL SUMMARY

Business Intelligence professional with 6+ years of experience in building scalable data pipelines, developing ETL processes, and creating interactive dashboards using Power BI and Tableau. Skilled in SQL, data modeling, and integrating data from diverse sources including SQL Server, Oracle, and flat files. Strong background in SSIS, DAX, Power Query, and performance tuning. Known for analytical thinking, attention to detail, and delivering data solutions that support business decision-making.

TECHNICAL SKILLS:

BI & ETL Tools

SSIS, SSRS, Power Query, Azure Data Factory (ADF).

Data Visualization

Power BI, Tableau (v9/10+), Excel (Pivot Tables, Power Pivot), Paginated Reports

Databases

SQL Server, Oracle, DB2, MySQL, MS Access

Data Modeling

Star & Snowflake Schemas, Fact & Dimension Modeling, SCD Handling, Normalization

Languages & Scripting

SQL, T-SQL, DAX, Power, M (power Query)

Cloud Platforms

Microsoft Azure (Synapse, Data Lake, Blob Storage), AWS (basic knowledge)

Data Formats

CSV, JSON

Documentation Tools

Microsoft Word, Excel, PowerPoint, Visio

Other

Azure DevOps, Git, Excel (Pivot Tables, Power Pivot)

PROFESSIONAL EXPERIENCE

Power BI Developer Nexa Telecommunications Dallas, TX

Feb 2023 – Present

Nexa Telecommunications needed an advanced data analytics solution to monitor network performance, customer usage patterns, and predictive maintenance for infrastructure. The existing system lacked real-time insights, leading to inefficiencies and delays in resolving network issues. The project focused on developing real-time dashboards, integrating Power BI with cloud-based data warehouses, and implementing AI-driven predictive analytics for proactive decision-making.

Key Contributions:

Developed ad hoc reports using Power BI based on dynamic business requirements, enabling real-time insights for stakeholders.

Gathered and analyzed incident data, presenting actionable insights to senior management through interactive Power BI dashboards.

Designed and deployed enterprise-level dashboards using Power BI, delivering deep insights across multiple business domains.

Created and implemented data models within SQL databases, supporting scalable and efficient data structures.

Troubleshot and optimized complex SQL queries and stored procedures to enhance data accuracy and system performance.

Automated workflows using Power Automate (Microsoft Flow) for auto-approvals, status updates, and other business process enhancements.

Built custom workflows to standardize processes and guide business teams in alignment with best practices.

Integrated Azure DevOps (ADO) by automating user story creation, updating ADO dashboards, and generating child work items to improve development tracking and efficiency.

Environment: Power BI, DAX, Power Query, SQL Server, Snowflake, Azure Synapse, Azure Data Factory, Power Automate, Azure DevOps, Python

Power BI Developer Orion Bank New York, NY

Nov 2020 – July 2021

Orion Bank required an automated reporting system for credit risk analysis, fraud detection, and compliance tracking. The goal was to replace static reporting with interactive Power BI dashboards that would help business users identify risks, monitor transactions, and enhance decision-making.

Key Contributions:

Collaborated with business stakeholders to gather and analyze requirements, delivering end-to-end Business Intelligence (BI) solutions aligned with best practices in BI and visual analytics.

Developed advanced calculations, actions, parameters, and utilized background images and geospatial maps in Tableau to build interactive, detail-level summary reports featuring trend lines, groups, hierarchies, and sets.

Implemented dynamic conditional filters and parameter controls to enable customized data exploration and enhance dashboard interactivity.

Designed and optimized SQL tables and views to manage complex data structures and serve as reliable data sources for reporting and analytics.

Extracted and consolidated data from multiple relational databases to feed analytical reports in Tableau, ensuring data accuracy and consistency.

Created and deployed visually compelling dashboards that delivered actionable insights to business users across various departments and organizational levels.

Partnered cross-functionally to identify and standardize Key Data Entities (KDEs) and Key Performance Indicators (KPIs), enabling the development of self-service dashboards that empowered business executives with timely, accurate data for informed decision-making.

Environment: Tableau, Power BI, SQL Server, AWS Redshift, Azure Synapse, SQL, DAX, Power Query, Data Modeling, Geospatial Mapping, Dashboard Development.

Associate Power BI Developer Insight Talent Solution Hyderabad, India

Jan 2019 – October 2020

Insight Talent Technologies aimed to enhance operational reporting by shifting from Excel-based reporting to a Power BI-driven analytics platform. The goal was to provide self-service analytics to business users while ensuring data security, automation, and scalability.

Key Contributions:

Collaborated with multiple business units to gather and analyze requirements, designing tailored dashboard solutions to meet diverse reporting needs.

Developed interactive dashboards in Power BI Desktop by integrating external data sources including Excel (xlsx), CSV files, and data extracted through SAS and database queries.

Executed ETL processes by extracting, transforming, and loading data from varied sources such as flat files, Excel, Oracle, and SQL Server, ensuring high data quality and integrity.

Wrote and optimized complex SQL queries for efficient data retrieval and improved report performance.

Demonstrated strong expertise in SQL development to meet data and reporting requirements, including comprehensive data source analysis and table/column identification.

Authored and maintained Data Mapping Documents, Data Dictionaries, and Interface Requirement Documents to ensure clear and consistent data definitions across projects.

Partnered closely with the ETL team to resolve data discrepancies, mapping issues, and defects, documenting all changes and fixes promptly to support ongoing data accuracy and system enhancements.

Environment: Power BI Desktop, SQL Server, Oracle, SAS, Excel, CSV, SQL, ETL, Data Mapping, Data Dictionary, Data Integration, Dashboard Development

EDUCATION

Masters in Computer Science – Oklahoma Christian University, USA (Nov 2022)

Bachelor’s in Computer Science – JNTU K, India (May 2019)

CERTIFICATIONS & CREDENTIALS:

PL-300: Power BI Data Analyst Associate

DP-600:Fabric Analytics Engineer Associate

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