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Dr. Christopher Dillon

Head of Data · Nexus Brands Group (PE-backed e-commerce retail)
Independent Consultant · Advisory & Build 2024 - Present
Selected engagements alongside in-house role

Bounded consultancy work building data functions from scratch and advising founders, CTOs, and boards. Build: hands-on delivery of warehouses, BI stacks, and analytics pipelines. Advise: architecture review, hiring, technical due diligence, AI enablement strategy. NDA-friendly, non-compete with employer's sectors. Mostly via referral.

Head of Data Jan 2025 - Present
Nexus Brands Group — PE-backed e-commerce retail

Advocated for and created this role, then built the data strategy, infrastructure, and team from scratch across 18 businesses in a PE-backed e-commerce retail group. This function has been central to a major global restructuring and optimisation programme — providing the evidence base for strategic decisions across the group.

  • Team: Built and lead a team of PhD-level data scientists and engineers supporting senior leadership across the group.
  • Platform (FLARE): Designed and built FLARE, a centralised data warehouse and 20+ dashboard reporting solution syncing hourly from multiple NetSuite instances, Shopify, and Google. Replaced all legacy reporting with a single Streamlit stack with Entra SSO and role-based access.
  • Analytics: Customer acquisition cost modelling and optimisation, discount dependency analysis, basket & bundle intelligence, pricing and shipping margin modelling with statistical significance testing, vendor spend analysis. EOS L10 scorecards across all departments.
  • AI: Drove AI adoption across the group and embedded LLM-assisted development in the data team (Claude Code) for faster pipeline and dashboard delivery. Stood up self-hosted local LLMs for privacy-preserving, zero-marginal-cost workloads — review sentiment, SEO copy analysis, product description harmonisation across 18 businesses — with prompts tuned per task.
  • Business impact: Created a unified global data view and got it into the hands of every employee at zero cost per seat, enabling: +25% OTIF; identified £Xm (figure withheld) in excess & obsolete inventory; recovered ~1% of revenue previously lost to out-of-stock; surfaced these to support growth and directly inform the global restructuring.
European Data Scientist Apr 2023 - Jan 2025
Nexus Brands Group

Built the data function from scratch for 5 European businesses across tattoo, beauty, and pet grooming supply. Consolidated fragmented data sources into a unified data warehouse, enabling consistent automated reporting across all entities. Promoted to Head of Data based on this work.

Data Scientist May 2022 - Apr 2023
Christies Direct (now part of Nexus Brands Group)

Established the Data Science function from scratch at one of the world's largest pet-grooming supply companies. Created unified reporting across Christies and sister company Transgroom. Promoted to European Data Scientist as the business was acquired into Nexus Brands Group.

Research Fellow Jan 2022 - Apr 2022
Queen's University Belfast & Randox Laboratories

Post-doctoral position to hand over the biomedical image recognition work from my PhD into Randox's production pipeline. Developed bespoke feature recognition software for biochip designs and created technical documentation for biomedical colleagues.

Astrophysics PhD Sep 2017 - Feb 2022
Queen's University Belfast

PhD project: Observations and Modelling of Intensity Time series for Biomedical and Astrophysical Applications — joint venture between Queen's and Randox. Developed statistical techniques for below-noise-floor signals, applied to both stellar lightcurves and biochip diagnostics. Led to novel discoveries of stellar nanoflares (published in ApJ) and to image feature recognition software now embedded in Randox's biochip pipeline — 98.8% reduction in downstream processing time in a $12B diagnostics market. Primarily IDL and Python. Redacted thesis.

2023
Nanoflare Activity on Fully Convective M-dwarf Stars
Grant et al. The Astrophysical Journal
2020
Statistical Evidence for Stellar Nanoflare Signals in M-type Lightcurves
Dillon et al. The Astrophysical Journal
2019
Monte Carlo Techniques for Nanoflare Detection in Solar Active Regions
Jess et al. The Astrophysical Journal
MSci Physics, First Class Honours Sep 2013 - Jun 2017
Queen's University Belfast

Seagate bursary recipient. Head of peer mentor scheme.