$ whoami

Tomás Varona Poncela

Senior Data Engineer · AWS Solutions Architect

~9 years designing and building scalable data platforms, ETL/ML pipelines and cloud-native applications. Comfortable leading technical initiatives and mentoring engineers, with hands-on expertise across AWS, Azure, Databricks and Python. Based in Madrid — working hybrid and remote.

$ cat experience.log

Senior Data Engineer May 2025 – Present

BASF Digital Solutions · Madrid, Spain · Hybrid
- – Design and implement data architectures on Azure and Databricks for enterprise analytics and ML workloads.
- – Lead technical decisions and mentor engineers, driving engineering best practices across the team.
- – Optimise and scale existing data solutions, improving performance, reliability and cost-efficiency.
Data Tech Lead · AWS Data Engineer Jan 2025 – May 2025

atmira · Madrid, Spain
- – Designed scalable big data architectures for analytics and ML applications.
- – Implemented ETL and ML pipelines in AWS environments.
Senior Data Engineer Apr 2024 – Oct 2024

TourRadar · Full Remote
- – Managed and implemented data pipelines using AWS Glue and Python.
- – Designed highly scalable data solutions aligned with business analytics needs.
Technical Project Manager Sep 2023 – Apr 2024

CaixaBank Tech · Madrid, Spain
- – Technical management of bank office applications used by branch managers across the entity.
Senior Data Engineer Oct 2022 – Aug 2023

BMAT · Full Remote
- – Implemented and optimised ETL processes for large-scale music data.
- – Developed and maintained APIs and AWS-based cloud systems with a focus on confidentiality, integrity and availability.
Senior Backend & Data Developer Nov 2021 – Oct 2022

Sngular · Full Remote
- – Developed features for an online ticket-purchasing platform.
- – Coordinated tasks and technical decisions directly with the client.
Software Developer & Researcher Oct 2018 – Nov 2021

TECNALIA Research & Innovation · Bilbao, Spain
- – Drafted proposals for national and European projects on smart and sustainable cities.
- – Implemented data analytics and AI solutions in research and prototype contexts.
ETL Developer & BI Consultant Feb 2017 – Oct 2018

NTT DATA · Barcelona, Spain
- – Developed and maintained Oracle RTD (Real-Time Decisions) solutions and built ETL processes for enterprise BI projects.

$ cat stack.json

Languages

Python SQL

Java

Shell

Cloud

AWS Azure

Data & ETL

Apache Spark

Apache Kafka

Databricks

Airflow

Datadog

Databases

PostgreSQL

MySQL OracleSQL

MongoDB

Redis

Web / Backend

FastAPI

Django

Flask

React

DevOps

Docker CI/CD

GitLab

Bitbucket

Nginx

PowerBI

Qlikview

Dash

Practices

Architecture Design Patterns TDD Concurrency

Methodologies

Agile Scrum Kanban

Jira

Confluence

$ ls certs/

AWS Certified Solutions Architect

Associate

view on credly →

AWS Certified Cloud Practitioner

Foundational

view on credly →

$ cat education.txt

B.Sc. Computer Science

Valencia International University (VIU)

2017 – Present
M.Sc. Numerical Methods in Engineering

Polytechnic University of Catalonia (UPC)

2014 – 2016
B.Eng. Civil Engineering (5 yr)

University of Cantabria · 2nd of class

2009 – 2014

$ cat languages.txt

Spanish Native
English Advanced (C1)

$ cat links.txt

// feel free to reach out via LinkedIn

linkedin linkedin.com/in/tvarona