Hi, I'm Marc 👋🏼

marccodess 🚀

Lead Data Scientist

Passionate about building high-impact teams & products that drive ROI

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About Me

Since completing my postgraduate studies in 2017, I have established a career in Data Science and Advanced Analytics, accumulating experience across both innovative startups and enterprise organisations within logistics, eCommerce, and telecommunication domains.

My cross-industry experience has enabled me to develop comprehensive expertise in both technical implementation and business strategy. As an advanced Python developer, I specialise in developing and deploying sophisticated machine learning and artificial intelligence solutions, leveraging cutting-edge technologies to deliver measurable business value.

Currently, I lead a team of Data Scientists at Virgin Media O2, where we drive transformative innovation and develop high-impact solutions that revolutionise network operations and customer experience.

This portfolio functions as a technical repository of my professional expertise and open-source contributions. Originally initiated as an experimental development project during the COVID-19 pandemic, it has matured into a comprehensive technical platform that integrates my GitHub repositories, professional network connections, and technical publications.

>8 Years
Experience
>£10m Business Value
Generated
>4.4k Online
Connections

Latest Blog Posts

Recent articles from Medium
Most Recent
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Should you switch from VSCode to Cursor?

My experience using VSCode (GitHub Copilot) and Cursor (Claude 3.5 Sonnet) as a Data Scientist

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Run LLMs Locally using Ollama

Step-by-step process to running large language models locally on your laptop

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What is a Confusion Matrix?

What are they, why, and when should we use them?

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Demystifying AI: Explainable AI for Stakeholders

Bridging the Gap Between Data Scientists and Stakeholders

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Experience/Qualifications

Work
Education

MSc: Data Science and Analytics

Manchester Metropolitan University, UK
Sept 2016 - June 2017

Research Assistant/Part-time Lecturer

University of Salford, UK
June 2014 - Sept 2016

BSc: Geography - Glaciology and Climate Change

University of Salford, UK
Sept 2011 - June 2014

Lead Data Scientist

Virgin Media O2
London/Manchester, UK
Jan 2024 - Present

Senior Data Scientist

Virgin Media O2
London/Manchester, UK
July 2023 - Jan 2024

Data Scientist

Virgin Media O2
Manchester, UK
May 2020 - July 2023

Data Scientist

AO World
Manchester, UK
July 2019 - Mar 2020

Data Scientist

Dee Set
Manchester, UK
April 2018 - July 2019

Services/Skills

Automation

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Automation & Process Optimization

  • Developed and implemented sophisticated web scraping solutions for automated data extraction from complex web applications and enterprise portals.

  • Designed and deployed end-to-end automation workflows that significantly reduced manual intervention and improved operational efficiency across multiple business units.

  • Technical Stack: Selenium WebDriver, Beautiful Soup

Machine Learning

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Machine Learning

  • Design and implementation of sophisticated machine learning solutions for complex business problems, enabling data-driven insights and automated decision-making systems.

  • Core Expertise: Gradient Boosting (XGBoost, LightGBM, CatBoost), Ensemble Methods (Random Forest), Clustering (K-Means), Dimensionality Reduction (PCA), Statistical Modeling

  • Technical Stack: scikit-learn, statsmodels, pandas, NumPy

Deep Learning

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Deep Learning & Neural Networks

  • Architected and implemented custom neural networks for Natural Language Processing, enabling automated customer intent classification across multiple communication channels with high accuracy.

  • Developed and deployed advanced Computer Vision solutions for retail analytics, optimizing inventory management and merchandising efficiency for enterprise-level clients.

  • Technical Stack: PyTorch, TensorFlow, Keras, Neural Network Architecture Design & Optimization

Cloud Computing

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Cloud Architecture & MLOps

  • Extensive experience with Google Cloud Platform (GCP), specializing in ML model deployment using Vertex AI and large-scale data processing with BigQuery.

  • Cross-platform expertise across major cloud providers (AWS, Azure, GCP), focusing on compute infrastructure optimization and scalable ML deployments.

  • Core Technologies: Vertex AI, BigQuery, Model Garden, Cloud Storage, Cloud SDK, Dataflow, Looker, EC2

Data Engineering

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Data Engineering & Architecture

  • Designed and implemented robust data architectures and ETL pipelines, leveraging dbt Cloud for scalable data transformations and maintaining data quality.

  • Extensive experience with diverse database technologies, including BigQuery for analytics, MSSQL for transactional data, and MongoDB for document-based storage solutions.

  • Technical Stack: Google BigQuery, Microsoft SQL Server, dbt Cloud, MongoDB Atlas, SQLite, DBeaver.

GenAI Solutions

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RAG & AI-Powered Development

  • Design and implementation of Retrieval-Augmented Generation (RAG) pipelines, integrating domain-specific data for accurate and context-aware AI responses.

  • Expertise in vector embeddings to efficiently encode, search, and retrieve information using state-of-the-art vectorization techniques.

  • Technical Stack: LLMs, LangChain, LlamaIndex, ChromaDB, OpenAI APIs.

Portfolio Projects

Brain Tumor Image Classification

Implementing a VGG-16 model to detect benign or malignant brain tumors.

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Data Structures and Algorithms

Popular data structures and algorithms implemented in Python.

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Visualization of genetic algorithm feature selection process

Feature Selection using Genetic Algorithms

Improving model performance and excluding irrelevant features using Genetic Algorithms.

More info

Resources

My Recommended Resources

Online Courses

Favourate Online Course Material

Introduction to Git and GitHub

Coursera - Google 100%

Deep Learning Specialization

Coursera - DeepLearning.ai 95%

Books

Recommended Literature

Data Science from Scratch

O'Reilly - Joel Grus (2019) 90%

Papers

Research Papers Everyone Should Read

Attention Is All You Need

Vaswani, A et al. (2017) 90%

ImageNet Classification with Deep Convolutional Neural Networks

Krizhevsky, A, Sutskever, I and Hinton, GE (2012) 85%

Contact Me

For collaboration inquiries, contact me via one of my social media accounts below.