Senior Data Engineer & Scientist | Building data platforms, ML systems, and AI agents that make it to production.
📍 Lagos, Nigeria · 🌍 Open to remote contracts (EU / UK / Canada/ Global) 📫 erozonkwo@gmail.com · LinkedIn · GitHub
I've spent 10+ years building the systems that quietly power fintech, banking, Energy, FMCG and telecoms such as fraud detection engines, credit scoring models, next best action/recommendations engines, chatbots, AI Agents and pipelines that process billions of transactions. I work across the full data lifecycle: from raw ingestion and cleaning, to production ML, to the dashboards executives actually use.
Lately I've gone deep into LLMs and agentic AI — building workflows where models don't just answer questions, they get things done.
I care about reliable, well-tested, well-documented data. I don't over-engineer, I ship, and I write code thinking about whoever inherits it.
Data Engineering
Apache Spark / PySpark · Kafka · Hadoop / HDFS · dbt · Airflow · Snowflake · BigQuery · ELK Stack · SQL / NoSQL · ETL/ELT Design
Cloud & Infra
GCP · AWS · Azure · k8s. Databricks · Docker · Kubernetes · CI/CD (GitHub Actions) · Git · REST APIs
Machine Learning
Python · PyTorch · TensorFlow · scikit-learn · XGBoost · SHAP / XAI · Clustering (DBSCAN, K-Means) · NLP
AI / GenAI
LLMs · Autonomous AI Agents · RAG · Prompt Engineering · Recommender Systems ,Langchain,n8n. etc.
MLOps
MLflow · Model Monitoring & Drift Detection · Feature Stores · Reproducible Pipelines
Analytics & Viz
Power BI · Looker · Tableau
- ⚡ Real-time fraud detection platform — PySpark → Kafka → Airflow pipeline processing 50M+ transactions/day at sub-second latency
- 🤖 AI-as-a-Service platform — containerised model-serving layer exposing risk scoring, churn, and merchant analytics APIs to fintech partners
- 📊 ELK-based log analytics platform — near real-time network fault detection across 30M+ subscribers
- 🔁 Automated settlement pipeline — replaced a 58-day manual process with a 2-hour automated run at 99% lower error rate
- 🎯 Customer analytics suite — sentiment analytics, churn, propensity, RFM, and CLV models driving 29% churn reduction and 57% loan sales growth
- 🏭 Group-wide industrial analytics platform — unified data models spanning cement, fertilizer, energy, and petrochemicals on a centralized warehouse
- 📱 Digital analytics engine — AI-driven loan scoring, churn prevention, recommendations, and CLV management → 22% growth in digital product acquisition
- 🔁 Automated incentive settlement pipeline (Python + SQL) — replaced a 28-day manual process with a 2-hour automated run, 99% error reduction
- 🚀 MLOps standardization — accelerated model-to-production cycle by 70% via standardized pipelines, feature stores, and CI/CD enforcement
- 🔍 XAI/governance framework (SHAP-based) — cut model review & regulatory approval timelines by 70%, sustained 99.9% model uptime via drift detection and automated retraining
- 🎯 Customer analytics suite — churn, propensity, RFM, telemarketing optimization → 18% churn reduction, 37% loan sales growth, 26% uplift in campaign response, conversion improved 21% → 59%
- 🧩 Customer segmentation (K-Means, DBSCAN) — powered 13 new tailored business propositions across sales, marketing, and CX
- 🕵️ Facial-matching fraud detection (DBSCAN on KYC embeddings) — eliminated duplicate SIM registrations, hardened identity verification at scale
- 💳 Loan pre-scoring model validation — built XGBoost challenger models achieving +8pp KS improvement; applied SHAP-based XAI for regulatory/credit-committee confidence
⚠️ Quantitative risk modeling — VaR, Monte Carlo simulation, stress testing supporting ICAAP and Basel II/III capital submissions
| Metric | Result |
|---|---|
| Model deployment speed | 70% faster |
| Pipeline error reduction | 99% |
| Production model uptime | 99.9% |
| ETL turnaround | 28 days → 2 hours |
| Conversion uplift | 31% → 59% |
- Building agentic AI workflows that automate real business tasks
- Scaling dbt-based ELT architectures
- Exploring how LLMs can augment traditional analytics , not replace it
🎖️ Queen's Young Leaders Award (2015) · Associate Fellow, Royal Commonwealth Society (2016) · YALI West Africa (2017) · CEO Recognition Award (2024)
💬 Got a hard data problem and not enough hands? Let's talk.