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Haftom
hghebrechristos@gmail.com
hghebrechristos@gmail.com
407-878-9926
347 S westmoreland ave
Los Angles, CA 90020
Los Angeles, CA 90007
Tableau Developer
10 years experience W2
3
Recommendations
Average rating
219
Profile views
Summary

  • Developed complex T-SQL Stored Procedures for the application for current and future state processes.
  • Deep understanding of Healthcare data reporting requirements and analysis.
  • Experience in various integration options using Tableau Desktop,Tableau Server and Tableau Reader to minimize overall end user licensing requirements.
  • Experienced in developing rich Interactive reports and dashboards integrating various reporting components from multiple sources and proficient in Tableau 2018.2/10.x/9.x (Desktop, Server, Online).
  • Outstanding knowledge in writing complex SQL queries, Stored procedures, database tuning, query optimization and resolving key performance issues.
  • Excellent knowledge in Tableau visual analytics and best practices like Dashboard structure, view orientation, Sizing and Layout, Data Emphasis, Highlighting, Color, Fonts, Tooltips, and performance improvement of complex dashboards/reports.
  • Worked on the development of Dashboard reports for the Key Performance Indicators for the top management.
  • Outstanding knowledge in Exploratory data analysis, statistical data analysis, data mining.
  • Strong knowledge in predictive analysis ,inferential statistics, machine learning algorithms
  • Excellent communication skills, strong team-building and conflict management skills.
  • Excellent ability to work independently and as a part of a multi-functional, geographically diverse
  • Expert in identifying outliers, and anomalies
  • Designed and implemented the Physical model of the BI data flow. Created Database Objects - Tables, Views, user defined functions.
  • Experience in developing High Performance Dashboards, Story points, hierarchy, sorting, complex calculations, Reports/Dashboards.
  • Expertise in designing and creating various analytical reports and Dashboards to help users to identify critical KPIs and facilitate strategic planning in the organization.
  • Proficiency in aggregating data and configuring reports from different data sources using data blending.

Experience
Senior BI Devloper
Healthcare
Apr 2017 - present
  • Involved in creation/review of functional requirement specifications and supporting documents for business systems, experience in database design process and data modeling process.
  • Understanding the useful and technical specification.
  • Deep involvement with the design and advancement of Tableau visualization solutions.
  • Experience with creation of users, groups, projects, workbooks and the appropriate permission sets for Tableau server logons.
  • Connected to different appliances like Oracle, MS SQL ,flat files, etc
  • Used data base filters and context filters.
  • Preparing Dashboards using calculations, parameters in Tableau and Developing Tableau reports that provide clear visualizations of various industry-specific KPIs.
  • Access and change extremely large data sets through filtering, grouping, aggregation, and statistical calculation
  • Consult with customers and inside partners to accumulate necessities and set milestones in the research, advancement, and execution periods of the project life cycle.
  • Understanding of Tableau features like calculated fields, parameters, table calculations, row-level security, R integration, joins, data blending, and dashboard actions.
  • Develop, organize, manage and maintain graph, table, slide and document templates that will allow for efficient creation of reports.
  • Interact with business analyst to gather ad hoc business requirements and designed functional and technical requirements documentation.
  • Provide master counsel to the Business Team on Best Practice design and visualization with Tableau.
  • Partner with the Technology teams to deliver a stable and highly available reporting platform
  • Plan and implement the overall analytics and business intelligence strategy.

R BI Developer Business Intelligence Oracle Tableau Technical Specifications Tableau Server SQL Database Design Data Modeling Business Requirements Business Analysis Analytics Data Visualization T-SQL Stored Procedure Data Analysis
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Tableau Developer
Transportation
May 2016 - Apr 2017
Heathrow, FL

  • Develop and implement new Business Intelligence processes for Tableau Reports systems.
  • Report requirement gathering from Business, Technical IT and Executives departments
  • Deep involvement with the design and advancement of Tableau visualization solutions.
  • Effectively utilize complex calculations, table calculations, parameters, Geographic Mapping, Data Blending within Tableau Desktop connected to different appliances like MS SQL
  • Setup accounts and grant access to Tableau Server and Tableau Reports, as required
  • Setup data sources automation updates in Tableau Server
  • Automate Tableau data refreshes through Tableau Server
  • Utilize Tableau Server to set up groups, provide required access and trouble shoot as needed
  • Developed various Tableau Reports for demographics analysis, KPI Analysis, Forecasting Books, Book Analysis and Executive Summaries
  • Create and publish TDE
  • Provide master counsel to the Business Team on best practice design and visualization with Tableau.
  • Partner with the technology teams to deliver a stable and highly available reporting platform
  • Plan and implement the overall analytics and business intelligence strategy.
Tableau Desktop Tableau Server Tableau Business Intelligence BI Developer Data Validation Data Visualization Data Analysis Requirements Gathering Analytics T-SQL Stored Procedure R SQL
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References
Average Rating

1 recommendation
Tableau Developer
Professional/Consulting Services
Feb 2014 - May 2016
Washington, DC

  • Involved in creation/review of functional requirement specifications and supporting documents for business systems, experience in database design process and data modeling process.
  • Understanding the useful and technical specification.
  • Deep involvement with the design and advancement of Tableau visualization solutions.
  • Experience with creation of users, groups, projects, workbooks and the appropriate permission sets for Tableau server logons.
  • Connected to different appliances like Oracle, MySQL etc
  • Used data base filters and context filters.
  • Preparing Dashboards using calculations, parameters in Tableau and Developing Tableau reports that provide clear visualizations of various industry-specific KPIs.
  • Access and change extremely large datasets through filtering, grouping, aggregation, and statistical calculation
  • Consult with customers and inside partners to accumulate necessities and set milestones in the research, advancement, and execution periods of the project lifecycle.
  • Understanding of Tableau features like calculated fields, parameters, table calculations, row-level security, R integration, joins, data blending, and dashboard actions.
  • Develop, organize, manage and maintain graph, table, slide and document templates that will allow for efficient creation of reports.
  • Interact with business analyst to gather ad hoc business requirements and designed functional and technical requirements documentation.
  • Provide master counsel to the Business Team on best practice design and visualization with Tableau.
  • Managed the migration of fixed income data mart from oracle to Tera data.
  • Partner with the Technology teams to deliver a stable and highly available reporting platform
  • Plan and implement the overall analytics and business intelligence strategy.
  • Worked on CMC to make the User-gathers and chipped away at the security rights.
Tableau Server Tableau Oracle MySQL Business Intelligence Data Modeling Data Analysis Data Validation Data Visualization BI Developer Technical Specifications Business Requirements Business Analysis Analytics T-SQL Stored Procedure Data Marts
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References
Average Rating

1 recommendation
Tableau Developer
Healthcare
Sep 2012 - Feb 2014
Ann Arbor, MI

  • Gather and analyze the business requirements and then translate them to technical specifications.
  • Created different views in workbook to visually analyze data.
  • Effectively interacted with Business Analysts and Data Modelers and defined Mapping documents and Design process for various Sources and Targets
  • Worked on Performance Tuning of the Workbook and improved the performance of the report running for 15 min to 90 seconds execution time.
  • Effectively used data blending feature in tableau to get data from Sql Server & MS Excel
  • Converted WEBI Reports to Tableau Dashboards for Advanced Visualizations with ODBC connection
  • Created out of the box charts for complex end user Requirements. Converted Heat map to funnel chart, Pie chart to a donut chart, Bar chart to a waterfall chart and many others.
  • Executed and tested required queries and data before publishing Dashboard
  • Created action filters, parameters and calculated sets for preparing dashboards and worksheets in Tableau.
  • Publishing customized interactive reports and dashboards, report scheduling using Tableau server.
  • Administered user, user groups, and scheduled instances for reports in Tableau.
  • Extensive experience in Tableau Administration Tool, Tableau Interactive Dashboards, Tableau suite.
  • Worked in Tableau environment to create dashboards like weekly, monthly, daily reports using tableau desktop & publish them to server.
  • Created Workbooks and dashboards for analyzing statistical billing data using Tableau 9.1
  • Deep experience with the design and development of Tableau visualization solutions.
  • Created extracts, published data sources to tableau server, refreshed extract in Tableau server from Tableau Desktop.
  • Used different Mark types and Mark properties in views to provide better insights into large data sets.
  • Created External filter, internal filter and Context filter to improve performance.
  • Used Data Blending, groups, combine fields, calculated fields, and aggregated fields and spotlighting to compare and analyze data in different perspectives.
  • Used dimension on Page shelf for a detailed analysis of the view by members of the dimension.
  • Created parameters and quick filters. Created sets to display top products based on their sale.
  • Created Actions in Worksheets and Dashboards for interactivity and to compare data against different views.
  • Created Dashboards with interactive views, trends and drill downs.
  • Published Workbooks and Dashboards to the Tableau server.
  • Combined visualizations into Interactive Dashboards and publish them to the web.
  • Created groups and users in Tableau server
  • Used commands in Tab cmd and Tab admin utility tool and migrated Workbooks and Dashboards from Tableau 7 to Tableau 9.2
  • Implemented new features in Tableau 9.2 to the existing Workbooks and Dashboards.
  • Created extensive documentation on the design, development, implementation, daily loads and process flow of the mappings and provided Knowledge Transfer to the end users.
  • Environment: Business Objects 6.5/XI R2, WEBI, DESKI, Crystal Reports XI, Crystal Xcelsius 4.5, Oracle 8i/9i, PL/SQL Developer, SQL Server 2005/2000, Java 2, Windows 2000 and UNIX
Tableau Desktop Tableau Tableau Server Oracle SQL Windows Data Modeling SQL Server PL/SQL Data Analysis Data Validation Data Virtualization BI Developer Business Intelligence Crystal Reports Java Xcelsius Waterfall SQL Developer Performance Tuning Microsoft Excel Database Design Crystal Xcelsius Business Requirements Business Objects Business Analysis Data Visualization T-SQL Stored Procedure UNIX PL/SQL Developer
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References
Average Rating

1 recommendation
Edit Skills
Non-cloudteam Skill
Education
Bachelor's in Chemical And Biological Engineering
Colorado State University, 2012 - 2014
Certifications
Tableau
Tableau, 2018
Data Science Specialization
Johns Hopkins University, 2018
Skills
BI Developer
2021
6
Tableau
2021
6
R
2021
3
Tableau Desktop
2017
2
Exploratory Data Analysis
2018
1
Stored Procedure
2021
12
T-SQL
2021
12
Data Visualization
2021
9
Business Intelligence
2021
6
Data Analysis
2021
6
Tableau Server
2021
6
Business Analysis
2021
5
Business Requirements
2021
5
Data Modeling
2021
5
Oracle
2021
5
Analytics
2021
4
Data Validation
2017
4
SQL
2021
4
Database Design
2021
3
Technical Specifications
2021
3
Data Marts
2016
2
MySQL
2016
2
PL/SQL Developer
2014
2
UNIX
2014
2
Business Objects
2014
1
Crystal Reports
2014
1
Crystal Xcelsius
2014
1
Data Virtualization
2014
1
Java
2014
1
Microsoft Excel
2014
1
Performance Tuning
2014
1
PL/SQL
2014
1
SQL Developer
2014
1
SQL Server
2014
1
Waterfall
2014
1
Windows
2014
1
Xcelsius
2014
1
Big Data
0
1
Data Mining
0
1
Requirements Gathering
2017
1