Humfred Mayah
Houston,TX
Summary
Professional data visualization specialist with commitment to delivering high-quality analytical solutions. Extensive experience in creating and optimizing Tableau dashboards that drive business insights and strategic decisions. Known for strong team collaboration and adaptability to evolving project requirements, leveraging data storytelling and analytical skills to achieve results.
Overview
11
11
years of professional experience
1
1
Certification
Work History
Lead Tableau Developer / BI Product Manager
Magellan Health
02.2024 - 04.2025
- Led the Business Intelligence team that was responsible for creating dashboards in tableau and maintaining the data warehouse to gather requirements and improve the intake process by 40%.
- Managed multiple BI projects and products within the organization and improved velocity and bandwidth by 60%
- Introduced a holistic BI Framework for the entire organization which led to a 40% reduction in the number of ticket intake for new reports
- Built interactive dashboards in Tableau, collaborating closely with business stakeholders to gather and define requirements effectively, which improved report accuracy and deliverables by 60%
- Partnered with internal and external stakeholders to increase reports utilization and data literacy by 30%
- Created a self-service platform for stakeholders to be able to self-pull reports from tableau and other tools reduce new intake tickets by 60%
- Managed bi-weekly and quarterly releases to the account managers and end clients
- Analyzed project dependencies and negotiated budget estimates needed to implement various products
- Led migration process from tableau server on-prem to tableau cloud
- Introduced Alation as a data governance/literacy tool
- Led data warehousing efforts, that specialized in data integration, ETL processes, and building scalable data models to support analytics and decision-making which increase performance by 70%
- Introduced Agile methodology systems (Scrum) to facilitate project planning and activity tracking
- Certified Scrum Master that is proficient in agile systems with hands-on experience working within the Scrum framework in Magellan to drive team collaboration and project success
- Communicated effectively with team members to deliver updates on project milestones and deadlines.
- Developed product documentation to communicate upcoming features and products to internal teams.
- Collaborated with sales teams to develop effective training materials that drove increased product knowledge among staff members, resulting in higher close rates.
Lead BI / Tableau Architect
University of San Francisco
02.2022 - 02.2024
- Led the adoption and integration of tableau as a business intelligence tool and migrated more that 200 reports form webfocus to tableau
- Developed more than 100 tableau dashboards for end users
- Trained more than 25 analysts on how to create dashboards using tableau
- Built adhoc reports in salesforce using Apsona
- Maintained tableau server updates, patching, and security which reduce report access and security concerns by 40%
- Led a migration process from oracle legacy systems to snowflake which provided a consolidated database for our organization.
- Enhanced and optimized reports within tableau server which increased dashboard performance by 60%
- Created best practice documentations and user guides for tableau and shared with other teams using tableau within the organization
- Applied row-level security to sensitive reports
- Created a self-service structure in tableau server for users to query and create custom reports which reduce intake tickets by 50%
- Migrated reports from salesforce to tableau
- Collaborated with clients to develop customized architectural solutions, meeting their unique needs and preferences.
- Reviewed technical drawings developed by CAD technicians and drafters.
Senior Tableau / Power BI Developer
Citi Bank
01.2021 - 02.2022
- Built Architectural platforms to support the BI Framework within Citi Bank
- Mentored multiple Tableau developers and provided training to teams that were migrating to Tableau
- Worked directly with the business to gather requirements and created mockups and requirement documents relevant to these reports
- Worked with the Tableau server admin to build a security network that is agile and proficient
- Created documentation detailing best practices within Tableau desktop and server
- Fixed and provided solutions to reports with performance issues within the server
- Worked with the engineering team to build a sustainable data model which helped facilitate the tableau dashboard development process
- Collaborated with engineers and other developers in an agile system using scrum
- Migrated reports from Cognos to tableau
- Worked closely with data engineers and business analysts to validate data sources and ensure accuracy in reporting.
- Facilitated data-driven decision making through the creation of comprehensive executive-level dashboards highlighting key trends and insights.
Lead Business Intelligence Consultant/Tableau Developer
Nike
01.2019 - 01.2021
- Built functional and technical dashboards to support manufacturing, sales, supply chain, climate change, and customer relations
- Collaborated with multiple on and offshore teams to create dashboards and reports to meet stakeholder’s expectations
- Optimized existing reports to improve dashboard speed and performance
- Collaborated with other teams such as the architecture and integration team to create tables and views that are optimized for tableau’s consumption
- Designed BI solutions aligned with strategy, roadmap, and architecture standards, and worked with the Data Governance team on KPI definitions
- Led the migration from SQL Server to AWS and Snowflake
- Gathered requirements from the Finance team to build dashboards with tiers 1 and 2 cost-centric data
- Handled massive quantities of business intelligence data.
- Developed dashboards for sourcing, manufacturing, labor, sustainability, and vendor quality
- Volunteered as a Tableau Doctor in workshops, providing user support
BI Consultant and Tableau Developer
Apple
01.2018 - 12.2018
- For a Decision Support contract project with Apple, aimed at reducing backlog tickets before quarter-end and transitioning new projects for the upcoming fiscal quarter, I held roles including Business Objects Developer, Tableau Developer, Tableau Server Admin, and BI Consultant
- Collaborated with cross-functional teams to ensure successful BI project delivery within deadlines.
- Gathered business requirements and provided solutions by working with teams globally, educating users on Business Objects and Tableau functionalities
- Implemented security hierarchies with Business Objects and validated data quality with engineering and end-user teams
- Worked with Engineering and Product teams to create data pipelines, ensuring appropriate metrics and dimensions for data sets, reporting, and dashboards
- Conducted Quality Assurance activities, and documented project-related standards, technical specifications, and test plans throughout project stages
- Rotated to multiple teams within Apple and created dashboards for respective clients
- Partnered with offshore teams all over the world to gather requirements and build reports
Lead Tableau Developer/Analyst, BI Consultant
Anthem
07.2016 - 12.2017
- Worked on healthcare data and customer insurance adoption and usage
- Created multiple dashboards analyzing and forecasting insurance cost by customer against the industry average
- Provided reporting, analysis and insights about sales drivers and key revenue performance metrics to support corporate analytics.
- Developed and enhanced reports connecting to single or multiple data sources to improve performance.
- Provided production support for multiple dashboards and participated in team-building and charitable activities
- Standardized metrics across various departments by establishing consistent definitions for KPIs used in Tableau reports.
- Conducted thorough quality assurance testing on all dashboards before deployment to guarantee accuracy and reliability of the presented data.
- Empowered stakeholders with real-time access to actionable insights by developing dynamic visualizations tailored to their needs.
Tableau Developer (Remote position)
Okta
01.2014 - 07.2016
- This project aimed to provide business intelligence through Tableau Desktop and Tableau Server, focusing on HR analytics for recruiters and recruiting managers
- Developed analytical reports by blending data from various sources and creating interactive dashboards to enhance insights into team productivity
- Created analyses of forecasted data to identify trends and improve operations, with experience in data warehousing, mining, and modelling
- Produced and published reusable Tableau Data Extracts (TDE), scheduled data extract refreshes, and created
- Built Tableau reports analyzing HR data, including recruiter scorecards, talent pool dashboards, and recruiter manager dashboards
- Wrote complex SQL queries to pull data from Snowflake and Amazon Redshift for Tableau reports
- Optimized dashboard performance by utilizing best practices in data extraction, filtering, and aggregation techniques.
Tableau Developer
Koch Industries
01.2014 - 12.2014
- Served as a Tableau developer developing a prototype design for standard adoption
- Coordinated and consulted with an offshore team in India
- Utilized tools like Alteryx, SQL Server, Kronos, Visual Studio, Microsoft Teams, Skype for Business, and SharePoint
- Used Azure DevOps for Agile methodology and participated in migrating from SQL Server to AWS
- Analyzed existing dashboards, created reports to address design and performance issues, and worked directly with clients to gather requirements and create mockups
- Developed HR analytics reports with KPIs, tracking total employees and departmental data
Education
Associate of Science - Computer Science
Houston Community College
Houston, TX12.2015
Bachelor’s degree - Science
Catholic University of Bamenda
Bamenda, CM12.2011
High School Diploma -
Saint Joseph's College
Buea, CM08.2007
Skills
- Sequel Writing
- Big data analytics
- Project planning
- Product strategy
- Product lifecycle management
- Tableau expertise
- Agile methodology
- ETL processes
- User training
- Dashboard design
- Data modeling
- Performance optimization
Accomplishments
- Mentored more than 20 college students majoring in computer engineering
- Trained more than 50 tableau specialist
- Built more than 1000 dashboards throughout my career
- More than 10 years of experience as a business intelligence consultant
- Achieved overwhelming results for companies by completing projects with high efficiency and low cost.
Certification
- Tableau Desktop Specialist
- Certified Scrum Master (CSM)
Affiliations
- 2014: Member of All-Academic Team USA and All-Academic Team Texas.
- 2013: Member of phi theta kappa and National Society of Collegiate Scholars.
Awards
2013: Black History Student of the Year, 2013:
2004: General Certificate of Education in Mathematics, Physics, Biology, Chemistry, and Philosophy (Valedictorian)
2013: Black History Student of the Year
Academic Student of the Year
Languages
eng
Native or Bilingual
French
Professional Working
Timeline
Lead Tableau Developer / BI Product Manager
Magellan Health
02.2024 - 04.2025
Lead BI / Tableau Architect
University of San Francisco
02.2022 - 02.2024
Senior Tableau / Power BI Developer
Citi Bank
01.2021 - 02.2022
Lead Business Intelligence Consultant/Tableau Developer
Nike
01.2019 - 01.2021
BI Consultant and Tableau Developer
Apple
01.2018 - 12.2018
Lead Tableau Developer/Analyst, BI Consultant
Anthem
07.2016 - 12.2017
Tableau Developer (Remote position)
Okta
01.2014 - 07.2016
Tableau Developer
Koch Industries
01.2014 - 12.2014
Associate of Science - Computer Science
Houston Community College
Bachelor’s degree - Science
Catholic University of Bamenda
High School Diploma -
Saint Joseph's College
Similar Profiles
Felicia OrnelasFelicia Ornelas
Customer Service Representative at Magellan HealthCustomer Service Representative at Magellan Health
MARK KANGMARK KANG
Customer Service Associate at Magellan HealthCustomer Service Associate at Magellan Health
Kimberly M RowlandsKimberly M Rowlands
Certified Peer Support Specialist at Magellan HealthCertified Peer Support Specialist at Magellan Health