
Billy Gareth
Implementation Engineer III at Sama
Alibaba Global Initiatives x Africa Business Heroes
Kenya
Hi, I'm Billy Gareth!
Implementation Engineer III at Sama
Results-driven AI/ML Engineer and Technical Leader with over 4 years of commercial experience designing, building, and deploying production-grade machine learning models, Generative AI applications, and robust MLOps pipelines. Expert in constructing agentic workflows using LangChain and LangGraph, engineering high performance RAG pipelines, and optimizing vector database architectures. Proven track record of scaling enterprise data systems to 50B+ data points and leading engineering teams to deliver high-ROI automation and Machine Learning solutions across EMEA.
Experience
Sama
Implementation Engineer III
March 2026 - Present
Spearheaded the design of an intelligent optimization platform that transformed operational throughput for Walmart, increasing productivity by 3,681% and reducing processing times for 350,000+ items by 97% without additional infrastructure costs
Architected the organization’s highest-complexity data and platform engineering initiatives, owning solution architecture, technical strategy, implementation, and production delivery across large-scale data processing systems delivering over 50 billion data points.
Mitsumi Distribution
Lead – Engineering and Data Science
August 2024 - March 2026
Building intelligent solutions with a team of 6 engineers and data scientists, driving a 25% increase in Partner sales, 30% expansion in market reach, and stronger product affinity and profitability.
Building an AI-driven intercontinental marketplace leveraging data science to enhance efficiency by 60% for vendors, partners, and customers.
Engineering and implementing GenAI solutions powering 17 service stations across Africa—automating scheduling, advisory, and email workflows—boosting efficiency by 40% and cutting response time by 65%.
Mitsumi Distribution
Data Scientist - S5
April 2024 - July 2024
Leveraging advanced analytics, machine learning, and data-driven insights to address complex challenges, enhance process efficiency by an average of 30%, and foster 23% business growth and innovation.
Architecting and integrating solutions across global platforms (HPE, DELL, Lenovo) with Cloudera, Ligadata, and open-source stacks—improving data management and enrichment by 40% while accelerating time-to-value, enhancing security and flexibility, and enabling scalable experimentation for BFSI, Healthcare, Manufacturing, and Logistics clients.
Xetova Limited
Data Scientist
December 2022 - June 2023
Developed credit risk and financial behavioural models for a Tier-1 bank, enabling data-driven financing decisions for project executors and their suppliers based on historical performance and reliability trends.
Engineered and led advanced data-driven solutions across financial, supply chain, and healthcare domains — cutting client costs by an average of 27% and improving operational efficiency by 32% through intelligent automation and predictive analytics.
KPMG East Africa
Associate - Data Science & Analytics
April 2022 - December 2022
Contributed to analytics and digital transformation initiatives across 5+ regional client engagements, supporting data-driven decision-making and operational modernization efforts.
Developed analytical workflows and reporting solutions that processed millions of records and enabled executive teams to make faster, evidence-based business decisions.
KPMG East Africa
Intern - Data Science & Analytics
January 2022 - March 2022
Developed and maintained advanced financial analysis and reporting frameworks for budgeting and expenditure management within a multibillion-dollar ecosystem, delivering actionable insights to directors across multiple regions.
KHE Limited
Analytics Developer
September 2021 - March 2022
- Spearheaded Logistics Analysis for Kenya's Leading Horticultural Exporter (30% Efficiency Boost, 15% Cost Reduction), leveraging Flask and Jinja templates and integrating MySQL for real-time data visualization
- Automated Supply Chain Insights Fuel 30% Efficiency Surge at KHE Ltd
Ministry of Health Data Analytics Portal
Open Source Developer
June 2021 - December 2021
- Unlocking Health Insights for Kenya: 18% Forecasting Leap Powers Data-Driven Decisions at Ministry of Health
- Advanced Analytics for Public Health: Leveraged NeuralProphet driving precision forecasting for Kenya's Health Ministry
Education
Certificates & Badges
No certificates or badges added
Projects
Realtime Analytics Engineer
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Harnessing the Pulse of Knowledge: Building a Real-Time Analytics Engine to Track Wikipedia's
Live Updates -
Unleashing Insights at Wikipedia Scale: Orchestrated, built and improved a streaming
infrastructure powering Real-Time Analytics for the World's Largest Encyclopedia
Ministry of Health DAP | Python, Facebook’s NeuralProphet, JavaScript, Java
•https://drive.google.com/file/d/1OSIYH1hKlQfLp1y9BMJopH_7n6H3nZZk/view?usp=sharingAnalytics Engineer
-
Unlocking Health Insights for Kenya: 18% Forecasting Leap Powers Data-Driven Decisions at
Ministry of Health -
Advanced Analytics for Public Health: Leveraged NeuralProphet driving precision forecasting for
Kenya's Health Ministry
Real-time Mood balancer | Python, TensorFlow, CUDA, NVIDIA Jetson Nano GPU
•https://medium.com/@billygareth01/mood-balancer-project-by-billy-gareth-e0c88230d89aAI/ML Engineer
-
Developed a cutting-edge real-time GPU solution that predicts the level of concentration of
audience and suggests activities to do, thereby enhancing audience engagement and
satisfaction. -
AI-powered Audience Engagement: Predicting Concentration & Boosting Satisfaction with Real
time Mood Balancing
-
Spearheaded Logistics Analysis for Kenya's Leading Horticultural Exporter (30% Efficiency Boost,
15% Cost Reduction), leveraging Flask and Jinja templates and integrating MySQL for real-time
data visualization -
Automated Supply Chain Insights Fuel 30% Efficiency Surge at KHE Ltd
Advanced Loan Optimization Engine (Private)| Python, Scikit-learn, Markov Chains, Monte Carlo Simulation
•Data Scientist - Finance
-
Architected End-to-End Credit Risk Optimization System delivering $250-280K annual profit with
3.8 4.2% ROI through advanced Markov Chain modeling and stochastic optimization algorithms,
reducing manual review workload by 95% while maintaining <6% default rate -
Engineered Sophisticated Multi-Model Framework combining Markov Decision Processes, Monte
Carlo Simulation (1,000 iterations), and Greedy Knapsack algorithms to optimize loan limit
increases across 25,068 customer segments, achieving 91% prediction accuracy with $107K
Value-at-Risk at 95% confidence
Languages
English
Native
Swahili
Native
Skills
Data Analysis
Data Analytics
Software Development
Machine Learning
Data Engineering
Financial Data Management
Computer Software Engineering
Software Development Management
Strategy and Leadership
Machine Learning Algorithms
Artificial Intelligence / Machine Learning Applications
Developing Machine Learning Algorithms
Artificial Intelligence / Machine Learning Related Activities
Agent Development