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Duncan Marsh

@duncanmarsh

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Senior Data Scientist with 8+ years of experience transforming complex data into actionable insights

South Africa

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What I'm looking for

data engineering, cloud, data science, machine learning

As a Senior Data Scientist with over 8 years of experience, I specialize in transforming complex data into actionable insights that drive business decisions and optimize outcomes. My expertise spans data analysis, modeling, and visualization, with a strong focus on solving real-world problems through predictive analytics and machine learning.

In my current role at Principa, I have developed predictive models in credit analytics, leveraging statistical techniques to assess risk and improve credit scoring. I have also utilized AWS cloud services for data processing and machine learning, and built data pipelines and visualizations with AWS QuickSight. My work has directly contributed to enhancing portfolio performance and supporting decision-making processes.

Earlier in my career, I worked as a Data Scientist at access.mobile International, where I collaborated on quarterly roadmaps with stakeholders, extracted insights from complex datasets, and presented findings to scientists and managers. I also applied statistical techniques to interpret data and improve business strategies through data analysis. My professional journey has equipped me with a strong foundation in data science, machine learning, and computational finance, enabling me to deliver impactful solutions across various industries.

Experience

Work history, roles, and key accomplishments

Current

Senior Data Scientist

Current

Principa

Aug 2023 - Present (1 year 10 months)

Developed predictive models in credit analytics, utilizing statistical techniques to assess risk, improve credit scoring, and support decision-making, enhancing portfolio performance.

predictive modeling Credit Analytics Statistical Techniques Risk Assessment Credit Scoring Data Analysis Decision Support Portfolio Management

Senior Data Scientist

Woolworths Holdings

Oct 2022 - Jun 2023 (8 months)

Developed predictive models in credit analytics to assess risk and improve credit scoring. Conducted variable analysis using K-means clustering for product assortment. Leveraged AWS tools for data processing and machine learning, enhancing portfolio performance and business strategies.

predictive modeling AWS Sagemaker Credit Analytics Data Visualization Data Analysis Statistical Techniques Stakeholder Collaboration Data Pipelines AWSAthena KMeans Clustering

Data Scientist

access.mobile International

Jan 2022 - Oct 2022 (9 months)

Used querying and visualisation tools to analyse complex data sets.
Collaborated on quarterly roadmaps with stakeholders.
Extracted insights and presented findings to scientists and managers.
Improved business strategies through data analysis.
Applied statistical techniques to interpret data

Python SQL

Data Analyst

access.mobile International

Apr 2020 - Jan 2022 (1 year 9 months)

Defined business rules from requirements analysis and resolved data flow issues. Created Excel reports and visualizations to present insights, optimizing value chains through statistical methods.

Excel reporting Business Analysis Data Flow Resolution Data Visualization Statistical Methods Trend Analysis Requirements Analysis Stakeholder Insights Data Cleaning Use Case Definition

Data Analyst

RCL Foods

Aug 2018 - Jan 2019 (5 months)

Compiled sales tracking reports and automated financial metrics for the Beverages division. Utilized IRI Temple software for reporting and performed data cleaning and analysis.

Sales Tracking Financial Metrics Automation IRI Temple Software Data Cleaning Reporting Data Analysis Excel Financial Analysis Trend Analysis Data Management

Commodity Analyst

Olam International

Apr 2017 - May 2018 (1 year 1 month)

Analyzed market prices in Futures and FX markets, producing daily reports and forecasts. Automated processes using VBA/Excel to assist traders in identifying opportunities.

Market Analysis Price Forecasting VBA Automation Excel Futures Market Reporting Data Insights Trend Analysis Financial Analysis FX Markets

Accounting Analyst

Cambridge Food

Dec 2016 - Apr 2017 (4 months)

Integrated Oracle database for financial reporting and cost analysis. Analyzed trends to predict customer behavior and provided reports to leadership while ensuring confidentiality.

Oracle Database Financial Reporting Cost Analysis Trend Analysis Customer Behavior Prediction Confidentiality Reporting Data Analysis Financial Metrics Stakeholder Communication

Graduate Project Manager/Analyst

AECOM

Aug 2015 - Aug 2016 (1 year)

Developed forecasts and cost curves using Excel tools. Automated calculations for project costs and created documentation to streamline processes, significantly reducing report creation time.

Forecasting Cost Analysis Excel VBA Automation Project Management Documentation Process Improvement Resource Allocation Cost Curves Reporting

Cost Controller

Calibre Global

Jan 2012 - Dec 2012 (11 months)

Forecasted project costs and managed contracts and invoices. Prepared budgets and reports on project progress, utilizing CMS software for tracking expenses.

Cost Forecasting Budget Preparation CMS Software Project Management Reporting Contract Management Invoice Management Expense Tracking Trend Management Client Communication

Education

Degrees, certifications, and relevant coursework

University of South Africa

Bachelor of Commerce, Economics

Completed a Bachelor of Commerce in Economics, focusing on economic theory, quantitative methods, and the application of economic principles to real-world problems.

DataCamp

Professional Certification, Data Science

Completed a professional certification in Data Science with Python, covering data manipulation, analysis, and visualization techniques using Python programming.

DataCamp

Certification, Programming

Completed a certification in Python Programming, focusing on the fundamentals of Python and its application in data analysis and programming tasks.

IBM Machine Learning

Machine Learning Professional, Data Science

Activities and societies: Exploratory Data Analysis for Machine Learning Specialized Models: Time Series and Survival Analysis Deep Learning and Reinforcement Learning Supervised Machine Learning: Regression Supervised Machine Learning: Classification Unsupervised Machine Learning

Meta/Facebook

Meta Database Engineer, Data Engineering

Activities and societies: Version Control Database Engineer Capstone Introduction to Databases Database Clients Coding Interview Preparation Database Structures and Management with MySQL Advanced Data Modeling Advanced MySQL Topics Programming in Python