Data Analytics Engineer · United Kingdom

Elvis
Nelson

Data Analytics Engineer Business Intelligence Data Modelling Pipeline Engineering

8+ years turning raw data into decisions. I build the pipelines, models, and dashboards that give finance and operations teams the confidence to move fast — and the accuracy to move right.

8+
Years Experience
40%
Faster Reporting
1M+
Transactions / Month
90%
OEE Plant Efficiency
70%
Less Manual Ops

// about me

Data at the core.
Decisions at the outcome.

I'm a data professional with 8+ years of end-to-end experience spanning Data Analytics, Product Analytics, Business Intelligence, and Requirements Engineering. I've worked across Finance, IT, Manufacturing, and Operations — bridging raw, fragmented data and real business outcomes.

My work lives in the full data stack: ingestion, storage, transformation, and visualisation. I specialise in building trusted, scalable domain models and self-serve analytics platforms that give finance and operations stakeholders the data they need, exactly when they need it.

Whether it's deploying a real-time OEE dashboard that drives plant efficiency to 90%, or cutting finance reporting cycles by 40% with dbt CI/CD pipelines — I focus on impact you can measure.

Data Modelling & Architecture
ETL / ELT Pipeline Engineering
Business Intelligence & BI Tooling
Data Quality & Monitoring
Self-Serve Analytics
Workflow Orchestration
Finance & Ops Reporting
Stakeholder Collaboration

Tools & Technologies

Transformation & Modelling
dbt SQL Python Pandas NumPy Alteryx Talend
Cloud & Warehouses
Snowflake BigQuery Amazon Redshift AWS GCP Azure
Visualisation & BI
Power BI Tableau Looker Amplitude
Orchestration & DevOps
Apache Airflow Snaplogic Git CI/CD

// featured projects

Case Studies

Real problems. Scalable solutions. Measurable impact. Each project represents a complete analytical lifecycle — from messy raw data to confident decisions.

01 / 03
⚙️
Real-Time OEE Manufacturing Dashboard
Siemens Energy · 2023

Manufacturing operations were running on slow, manual processes to track Overall Equipment Effectiveness. I designed and deployed a real-time OEE dashboard — automating data ingestion from production systems, modelling it in Snowflake, and surfacing performance live in Power BI. Plant managers moved from weekly lag reports to live operational adjustments.

Key Outcomes
90% plant efficiency achieved post-deployment
100% manual OEE reporting processes eliminated
Faster decision-making across the manufacturing floor
SQL Snowflake Power BI Python dbt Airflow
Full Case Study — Coming Soon
02 / 03
💳
FinTech Analytics Platform at Scale
Payforce by FairMoney · 2021–2022

A fast-growing African fintech was processing over 1 million monthly transactions with limited visibility into credit risk, collections, and compliance. I led the design and deployment of core analytics data assets on BigQuery — delivering real-time dashboards for finance and audit teams, and building monitoring systems that cut pipeline downtime by 30%.

Key Outcomes
1M+ transactions supported and monitored monthly
30% reduction in pipeline downtime via alerting
Real-time credit risk visibility for audit teams
BigQuery SQL Python Tableau Power BI Amplitude
Full Case Study — Coming Soon
03 / 03
📊
Self-Serve Finance Reporting Infrastructure
Siemens Energy · 2022–2024

Finance teams were losing hours every week to fragile, manual reporting cycles for budgeting and variance analysis. I partnered with stakeholders to design Snowflake data marts, build and test dbt models end-to-end, and implement CI/CD pipelines with Git — replacing a brittle manual process with a trusted, automated, self-serve reporting layer.

Key Outcomes
40% reduction in monthly reporting cycle time
6 hrs saved per week in manual effort
70% less manual pipeline intervention via Airflow
dbt Snowflake Airflow Looker Git CI/CD
Full Case Study — Coming Soon

// experience

Where I've Worked

Data Analytics Engineer Dec 2022 — Present
Siemens Energy  ·  United Kingdom
  • Managed Snowflake data pipeline design and implemented scalable analytics models enabling self-serve reporting for finance and operations stakeholders.
  • Designed data marts and dbt models for monthly performance, budgeting, and variance analysis — cutting reporting cycle time by 40% with CI/CD and Git.
  • Designed and deployed a real-time OEE dashboard for manufacturing, automating manual processes and boosting plant efficiency to 90%.
  • Automated SQL/Python compliance and portfolio reporting, saving 6 hours per week and improving data accuracy for finance and ops teams.
  • Orchestrated pipelines with Apache Airflow — improving reliability and reducing manual intervention by 70% while enforcing data quality checks.
dbtSnowflakePython AirflowAWSRedshift Power BITableauLooker GitAlteryx
Analytics Engineer (Product Operations) Sept 2020 — Dec 2022
Payforce by FairMoney  ·  Cape Town
  • Designed ETL pipelines aggregating transactional, market, and customer data for risk, credit, and compliance analytics — improving timeliness of finance reporting.
  • Led development of analytics data assets supporting 1M+ transactions monthly via SQL and BigQuery.
  • Built Tableau and Power BI dashboards for finance and audit teams — real-time visibility into credit risk, collections, and operational KPIs.
  • Implemented monitoring dashboards and alerting for pipeline anomalies, decreasing downtime by 30%.
  • Managed the SDP framework and automated data request fulfilment, reducing manual effort for internal stakeholders and partners.
PythonSQLBigQuery Power BITableauAmplitudeGit
BI / Insight Analyst Aug 2018 — Aug 2020
OgaTaxi  ·  Cape Town
  • Created actionable KPI dashboards and reports in Tableau and Power BI for senior management to track business metrics.
  • Designed analytics solutions integrating sales, inventory, and customer datasets to support advanced analytics.
  • Orchestrated integration of data systems, elevating operational efficiency and ensuring a cohesive infrastructure.
  • Led technology evaluations, implementing cutting-edge tools to keep the data architecture adaptive and future-ready.
PythonBigQuery TableauPower BIGit
Data Analyst (Intern) Jan 2017 — Jul 2017
Afrihub  ·  Abuja
  • Created ETL workflows combining CRM and web analytics data using Talend and Python, accelerating monthly financial and marketing reports.
  • Built SQL-based extraction, transformation, and loading infrastructure from multiple data sources.
  • Collaborated with multinational teams across Ghana and South Africa within a global data delivery framework.
PythonSQLTableauTalend

// education & certifications

Credentials

MSc. Information Systems & Business Analysis
Aston University  ·  United Kingdom
Specialisations: Data Analytics, Data Warehouse Architecture, ETL/ELT, Business Process Modelling, Project Management, Operations Management, Servitisation.

Research Thesis: Consumer intention to subscribe to music streaming services — TAM & UTAUT2 frameworks with Structural Equation Modelling (SEM).
BSc. Computer Science
Covenant University
Specialisations: Software Engineering, System Optimisation, Algorithms, Statistics, Human-Computer Interaction.
🏆
Azure Data Fundamentals (AZ-900)
Microsoft
📐
Intermediate dbt
DataCamp
📐
Introduction to dbt
DataCamp
📊
Data Analytics: SQL and Power BI
Utiva

// beyond the data

Life Outside Work

Data tells half the story. Here's the other half — the things that keep me curious, competitive, and grounded.

Hobbies & Interests
Football
Team Captain — The Sharks, Computer Science, Covenant University
🏓
Table Tennis
Quick reflexes, quicker decisions
🎾
Padel
Strategy meets athleticism
🏃
Running
Clearing the mind, one mile at a time
🎬
Movies
Popcorn in hand, chairs reclined
✈️
Travelling
Exploring cultures, perspectives & cuisines around the world
Countries Visited
🇳🇬 Nigeria 🇪🇸 Spain 🇵🇹 Portugal 🇲🇹 Malta 🇬🇷 Greece 🇺🇸 USA 🇦🇪 UAE 🇲🇦 Morocco 🇩🇪 Germany 🇭🇺 Hungary 🇬🇧 United Kingdom
📚 Favourite Books
✝️
The Bible
★ All-time favourite
📖
Rich Dad Poor Dad
Robert Kiyosaki · Finance & Mindset
📖
The Richest Man in Babylon
George S. Clason · Personal Finance
📖
Zero to One
Peter Thiel · Startups & Innovation
📖
Who Moved My Cheese?
Spencer Johnson · Change & Adaptability
📖
Things Fall Apart
Chinua Achebe · African Literature

// get in touch

Let's work
together

Whether you're looking for a data engineer to build your analytics infrastructure, a BI expert to turn your data into dashboards that drive decisions, or a collaborator on your next project — I'd love to hear from you.

Send a Message