FINLAY
O'NEILL

|

about_me

TLDR;Ibuildthings
I'vedesignedandmaintaineddatabases,datapipelines,websites,dashboards,machinelearningmodels,distributedapps,investmentportfolios,analyticaltools,andmore.I'veworkedasadataengineer,quantitativedeveloper,datascienceconsultanttonameafew.
Myprofessionalcareerbeganin2014-hackingawayinExcelVBAtoautomatespreadsheetreports.Sincethen,I'vebeenexploringtheboundsofwhatdataandcodecandotodriveinformeddecisionmaking,produceaestheticandintuitiveapplications,unlockvaluefromvastamountsofinformation,andoptimiseworkflows.
I'minterestedinthedecisionmakingprocess,whichhasledmuchofmycareer-bothintermsoftherolesI'veheldbutalsothetechnologiesandskillsI'vetaughtmyselfalongtheway.
I'veworkedinteamsofalldifferentsizesandindustries-frombigcorporatedivisionstosmallstart-upsquads.I'vebeeninroleswhereI'vementoredjuniorteammembersandotherroleswhereI'veproducedMIreportsforC-suiteexecutives.
experience

Senior Quantitative Developer

NatWest10-2026 - Present

Contract role focused on enhancing the centralised Monte-Carlo modelling framework.

PythonSQLAWS

Lead Python Developer

Columbia Threadneedle Investments10-2025 - 09-2026

Contract role in the Investment Risk team, leading development of a full-stack risk monitoring platform alongside the firm's migration to Snowflake. Built the FastAPI backend, Dash front end and overnight data pipeline, deployed to EKS via a GitOps pipeline. Leading Python development standards across a globally distributed team.

PythonFastAPIDashSQLSnowflakeAWSEKSDockerKubernetesHelmJenkinsBitbucketLLMAladdin

Data Engineer

Aberdeen Investments03-2023 - 09-2025

Modelling & Quantitative Analytics, democratising data across the firm to support investment decision-making. Built pipelines, dashboards and bespoke tools. Rebuilt the in-house ESG scoring process, cutting runtime from three hours to six minutes. Introduced GitOps deployment to the team's Kubernetes analytics platform.

PythonSQLC#AzureKubernetesDockerTerraformFluxCDHelmAzure Data FactoryAzure DevOpsTeamCitySnowflakePowerBI

Quantitative Developer

Aberdeen Investments03-2022 - 03-2023

Quantitative Investment Solutions, enhancing portfolio analytics to understand performance drivers and risk factor exposure. Replaced a manual pre-trade process with an automated pipeline integrating position, FactSet and Style Analytics data with optimiser and simulation outputs.

PythonSQLAzureAzure DevOpsMicrosoft SQL ServerPowerBIBloombergFactSetSFTP

Data Engineer / Scientist

Forecast Global01-2021 - 03-2022

Consultancy across clients of varying size and sector — from building data pipelines for a FTSE 100 telecoms firm to classifying sales leads with machine learning models for a FinTech.

PythonSQLGCPBigQueryAirflowdbtDockerTableauMachine Learning
see_full_experience