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Billy Otieno

@billyotieno

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Statistician and data analyst driving predictive insights and actionable dashboards for business impact.

Kenya

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What I'm looking for

I am seeking remote roles where I can apply statistical modeling and dashboarding to influence decisions, mentor teams, and build reproducible workflows.

I am a statistician and data analyst with 7+ years applying statistical methods, predictive modeling, and visualization across finance, logistics, and development sectors.

I build reproducible workflows, automate reporting pipelines, and create interactive dashboards with Python, SQL, R, Tableau, and Power BI to speed decision-making and reduce manual effort.

My work has driven measurable outcomes — customer retention improvements, inventory reductions, and faster onboarding through documented SOPs — and I mentor junior analysts while ensuring methodological rigor.

I am actively seeking remote roles where I can contribute statistical expertise to shape AI systems and enhance data-driven decision-making across teams.

Experience

Work history, roles, and key accomplishments

Freelance Data Analyst

Upwork

Sep 2021 - Apr 2025 (3 years 7 months)

Designed analysis tasks and delivered 30+ remote projects (95% client satisfaction), building dashboards and automated reporting pipelines that reduced reporting time by up to 50%.

Python SQL Tableau Data Wrangling Statistical Modeling Dashboarding Git

Warehouse Data Analyst

Intraspeed Arcpro Ltd

Jul 2019 - Aug 2021 (2 years 1 month)

Built data pipelines and dashboards to optimize logistics, integrated statistical methods improving inventory accuracy and reduced onboarding time by 40% through documented workflows.

SQL Python ETL Tableau Data Pipelines Inventory Analysis Mentoring

Data Analyst Intern

CIC Insurance Company Ltd

Jan 2019 - Jun 2019 (5 months)

Supported data cleaning and analysis using SQL and Python, conducted hypothesis and A/B test analyses, and built dashboards to monitor engagement KPIs.

SQL Python Google Data Studio Excel A B Testing Data Cleaning Dashboarding Documentation

Data Analyst Specialist

Sanlam Insurance

Jan 2018 - Dec 2018 (11 months)

Performed EDA on survey data and produced Tableau/Excel visualizations for donor and internal reports that influenced NGO planning and programming.

Tableau Excel Survey Analysis Data Visualization Reporting

Freelance Data Analyst

Fiverr

May 2017 - Dec 2017 (7 months)

Delivered statistical analyses and visual reports for global clients across sectors, provided reproducible workflow documentation and maintained a 5-star rating.

Statistical Analysis Data Visualization Documentation Python Excel Client Communication

Education

Degrees, certifications, and relevant coursework

Machakos University

Bachelor of Commerce, Finance

2013 - 2016

Completed a Bachelor of Commerce in Finance with coursework and projects focused on financial analysis and data-related applications between 2013 and 2016.