John Muthoka
@johnmuthoka
Senior Data Analyst with 5+ years of experience in SQL, Tableau, and Python, delivering insights through scalable dashboards.
What I'm looking for
I am a Senior Data Analyst and Business Intelligence professional with over five years of experience helping organizations use data to drive smarter decisions across technology, enterprise, telecom, and NGO environments. My career has focused on building scalable analytics solutions that connect data engineering with business strategy.
Currently, I work as a Senior Business Intelligence Analyst at Griffin Global Technologies, where I support international clients including Chick-fil-A, Brinks US, and CoinFlip. In this role, I design and maintain dashboards using SQL, Tableau, and Power BI, automate reporting pipelines with Python, Power Automate, and integrate data from multiple systems such as Snowflake, SQL Server, Databricks, AWS Redshift, Salesforce, and APIs. My work has contributed to measurable impact, including reducing operational costs by 10% and cutting manual reporting effort by over 35%.
Previously, I worked at Safaricom PLC as a Programme Analyst, where I led the development of Tableau dashboards for financial and operational KPIs, supported forecasting and planning initiatives, and partnered closely with operations and finance teams to translate business problems into data-driven solutions. I have also worked in mission-driven environments at Science for Africa Foundation and PwC Kenya, where I focused on data validation, governance, ERP systems, and building reliable reporting frameworks.
My core strengths include SQL, Tableau, Power BI, Python, data modeling, KPI design, forecasting support, automation, and data quality management. I am experienced with modern data stacks such as Snowflake, AWS Redshift, Databricks, DBT, SSIS, and Azure Data Factory, and I enjoy working across the full data lifecycle—from raw data ingestion to executive-level insights.
Beyond technical skills, I bring a strong analytical mindset, structured thinking, and a high level of ownership. I enjoy working with ambiguous problems, asking the right questions, and turning complex or messy data into simple, actionable insights that drive real business impact.
My interests lie in building data products, improving decision-making processes, automation, and working with globally distributed teams on meaningful, scalable problems. I am particularly interested in remote-first companies where data plays a central role in strategy, growth, and performance.
Experience
Work history, roles, and key accomplishments
Senior Business Intelligence Analyst
Griffin Global Technologies
Apr 2024 - Present (1 year 9 months)
Analyze large-scale operational data and design Power BI/Tableau dashboards that informed strategic planning and drove a 10% operational cost reduction; automated reporting workflows to cut manual effort by 35%.
Programme Analyst
Safaricom PLC
Oct 2022 - Mar 2024 (1 year 5 months)
Developed interactive Tableau dashboards and supported forecasting and planning efforts while leading data governance and QA initiatives that improved reporting reliability across departments.
Data Assistant
Science for Africa Foundation
Feb 2022 - Sep 2022 (7 months)
Built and maintained programme performance dashboards and supported ERP rollout with data preparation and UAT, ensuring high data integrity through validation and reconciliation.
Supported operational setup of a pan-African research NGO via data modeling, ERP configuration, and reporting frameworks, and designed operational data standards for grants, finance, and HR.
Data Assistant
The African Academy of Sciences
Sep 2020 - Jul 2021 (10 months)
Conducted daily data validation checks and developed structured workflows to maintain high-quality research datasets and support efficient data processing and reporting.
ICT Officer
Hoffman Solutions Limited
May 2020 - Aug 2020 (3 months)
Developed and managed web/mobile applications, performed data mining and statistical analysis for business insights, and provided end-user technical support.
Education
Degrees, certifications, and relevant coursework
Rongo University
Bachelor of Science, Informatics
2016 - 2020
Completed a Bachelor of Science in Informatics with coursework and projects focused on data analysis, ETL pipelines, and dashboarding.
Tech stack
Software and tools used professionally
Availability
Location
Authorized to work in
Portfolio
my-portfolio-49ve.onrender.comSalary expectations
Social media
Job categories
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