Julia Macmillan

Senior Data Scientist | Data Strategist

Salary / Daily rate

Freelance, open to permanent contract

Skills

PythonSQL QueriesAzurepandasPySparkRGitDockerFastAPIFlaskSupabaseDatabricksAWSAWS LambdaGoogle Cloud PlatformApache AirflowGDPR

About me

Intro

Senior Data Scientist specializing in translating complex stakeholder challenges into actionable business value. A strategic leader adept at driving organizational change through data-led insights, moving teams from reactive outputs toward long-term, value-driven roadmaps. Expert at bridging the gap between technical engineering and high-level stakeholders through solution validation, primary research, and proactive requirement management across the Clinical, Corporate, Public and Financial sectors.

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Work experience

Senior Data Scientist & Strategist

Samsung SDS Europe Ltd

Mar 2022 - Dec 2025

3 years 10 months

– Strategic Transformation: Pioneered the Data Science function, migrating the Data Insight team from reactive reporting to a predictive, evidence-based roadmap. – RFMe & Customer Centricity: Introduced a proprietary RFMe framework to drive deeper behavioral insights, leveraging it for Churn Prediction and Customer Lifetime Value (CLV) forecasting. – Product Readiness: Engineered production-ready ML pipelines in Azure/Databricks, ensuring model logic and outputs were optimized for engineering deployment and governance. – Causal Analysis: Applied Causal Impact to validate the impact of interventions, distinguishing between organic trends and specific strategic actions.

Data Scientist (Contract)

UK Health Security Agency (UKHSA)

Sep 2021 - Mar 2022

7 months

– Agile Collaboration: Worked within a multi-disciplinary team, collaborating closely with Business Analysts (BAs) to ensure technical outputs met complex national requirements. – Operational Efficiency: Contributed to a team effort that automated critical reporting pipelines to facilitate real-time public health decision-making for national leadership.

Data Scientist (Contract)

Joint Biosecurity Centre (JBC)

Mar 2021 - Sep 2021

7 months

– Policy Impact: Identified causal effects in national datasets to evaluate intervention efficacy, informing pandemic surveillance strategies.

Data Scientist (Contract)

UCAS

Jan 2020 - Mar 2020

3 months

– Collaborative Development: Integrated multi-source datasets for a recommendation engine deployed via AWS Lambda.

Data Scientist (Contract)

Systems Forecasting

Aug 2019 - Jan 2020

6 months

– Statistical Modelling: Analyzed genomic and time series data using Survival Analysis and advanced statistical modeling in R.

Junior Data Scientist

Sensyne Health

Feb 2018 - Aug 2019

1 year 7 months

– Clinical Validation: Validated Oxford research models for Parkinson's; implemented ML for ICU actionable intelligence. – Strategic Reporting: Developed ETL Tableau dashboards presenting business metrics (KPIs/OKRs) to the Board.

Founder & Lead Consultant

Cyecandy Web Design & Analytics

Jan 2008 - Jan 2018

10 years 1 month

– Contract: Project Lead @ Powys County Council (PCC): Led the delivery of public-sector digital infrastructure. Sourced, hired, and managed a multi-disciplinary team of programmers and QA engineers, ensuring strict compliance with accessibility and security standards. – Contract: Pre-Sales Technical PM @ Natterbox: Managed technical relationships for Tier-1 institutions (Deutsche Bank, Berenberg). Conducted software demonstrations for executive stakeholders and liaised directly on client requirements. – Contract: Data Insight & Research @ IR Magazine: Conducted primary research interviews with analysts and investors to extract market sentiment. Translated survey data and qualitative interviews into published articles and article-ready data insights. – Contract: Web Developer @ Cyecandy: Built a specialized e-learning website for The Priory School's (Shorpshire) IT department. Managed the end-to-end delivery, ensuring the platform met the specific academic rigor required for high-attaining learners.

Digital Comms Team Member, Certified Profibus Engineer

Control Techniques (Emerson Electric)

Jan 2002 - Jan 2003

1 year 1 month

Newtown SY16, UK


Education

City University, London

MSc, Data Science

– Distinction for dissertation (80% - highest in cohort) for research into predicting Manipulation Under Anaesthesia (MUA) success using Local Binary Pattern (LBP) features in real world clinical PoC in collaboration with Royal Devon and Exeter hospital.

University of Wales

BSc, Business IT


Licenses & certifications

Infectious Disease Modelling: Mathematical Techniques

Issued: Jan 2025

Certified by University of Oxford

Machine Learning Engineering for Production (MLOps)

Issued: Jan 2021

Certified by DeepLearning.AI via Coursera

Clinical Data Science Specialization

Issued: Jan 2021

Certified by University of Colorado via Coursera

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