Neurons Lab - Data Science Lead
Requirements
• Expert Python for data science (pandas / Polars, scikit-learn, statsmodels) and strong SQL over large tables • Python • Credit-risk / financial modeling: scorecards, PD, delinquency, segmentation, model validation and governance • Credit-risk / financial modeling • Data validation, profiling and feature engineering on messy enterprise data • dbt / semantic modeling; partnering with data engineering on the harmonization layer • dbt / semantic modeling • GenAI insight layer: text-to-SQL, RAG over structured data, evaluation and guardrails • Methodology, lineage and documentation that survives audit; able to explain it to executives • Leadership of small delivery pods and distributed / offshore teams • Knowledge • GDPR fundamentals (anonymization vs pseudonymization, UK / EU data residency) • AWS analytics stack and Well-Architected (Analytics, Security) for BFSI • UK / EU credit & lending regulatory context (FCA, model governance, fair-lending / explainability) — strong plus • Familiarity with credit-bureau / scoring data products — strong plus • Key characteristics (ideally 4/4): • Hands-on data science at enterprise scale • Worked with financial-services / credit clients or in-house at a credit / lending company • Cloud hyperscaler experience (AWS preferred) • Technology consulting / client-facing delivery background • Role-specific characteristics: • 7+ years hands-on data science, with real credit-risk / financial modeling • 7+ years • Experience building and validating models in a regulated, audited context • building and validating models in a regulated, audited context • Led small data-science teams while still coding personally • Demonstrably comfortable doing the data-cleaning grunt work themselves, not just directing it • data-cleaning grunt work
Responsibilities
• Profile the anonymized lake hands-on — interrogate tens-of-millions-of-row tables and reproduce and validate the team's existing descriptive statistics, so every number is traceable to source (the client cannot currently answer “how do you know that's correct?”). • reproduce and validate the team's existing descriptive statistics • Build and validate the core risk models yourself: PD, delinquency / roll-rate, early-warning, segmentation and scorecards (WOE / IV, logistic regression, gradient boosting). • PD, delinquency / roll-rate, early-warning, segmentation and scorecards • Stand up the model-validation discipline that makes outputs audit-defensible: train / test / out-of-time splits, Gini / AUC / KS, calibration, stability (PSI), backtesting and full model documentation. • model-validation discipline • Define feature logic with the Data Engineer and write it yourself in SQL / dbt / Python; specify the harmonized definitions the semantic layer must serve. • write it yourself in SQL / dbt / Python • Prototype and validate the natural-language insight layer (text-to-SQL / RAG over the semantic layer); check answer correctness and add guardrails. • natural-language insight layer • Run a credit-policy / cut-off analysis showing where the client could tighten policy or reduce delinquency — the concrete insight their own clients keep asking for. • credit-policy / cut-off analysis • Lead a small pod (Data Engineer, client's junior offshore data people): set tasks, review work, be the quality bar and the human-in-the-loop. • Front the client's data leadership: present findings, explain methodology to non-technical executives, and shape the phased roadmap / SoW.
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