Esther Lozano
Senior Software Engineer at Lightbase
Madrid, Community of Madrid, Spain
Summary
🤩
Rockstar🎓
Top SchoolEsther Lozano is a Senior Software Engineer based in Madrid with 11 years of experience building robust backend systems and data-intensive platforms. She has moved between startups and product teams—contributing to ingestion resilience and billing systems at Tinybird, high-throughput features at Sketch, and geospatial database work on the widely-used CartoDB platform. Esther blends deep database and backend expertise (Postgres, ClickHouse, Kafka) with cloud-native deployment and observability practices, having delivered microservice architectures and production-grade data pipelines. Her academic background—an AI PhD focused on ontology engineering and Semantic Web—gives her a rare strength in modeling complex data and designing thoughtful schemas. Comfortable across languages and stacks, she’s known for solving performance bottlenecks and reducing data-loss risk through pragmatic engineering. Colleagues rely on her for reliable, scalable designs that bridge research-grade thinking and production realities.
11 years of coding experience
16 years of employment as a software developer
Engineer Computer Science, Engineer Computer Science at Universitat Autònoma de BarcelonaUPC Universitat Politècnica de CatalunyaDoctor of Philosophy (PhD) Artificial Intelligence, Doctor of Philosophy (PhD) Artificial Intelligence at Universidad Politécnica de Madrid
English, Spanish
Stackoverflow
1reputation
0reached
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Github Skills (9)
database-migrations10
database-migration10
postgresql10
sql9
cartodb8
geospatial7
geolocation7
data-modeling7
postgis6
Programming languages (8)
Github contributions (5)
CartoDB/cartodb
Nov 2019 - Mar 2020
Location Intelligence & Data Visualization tool
Role in this project:
Back-end Developer & Database Engineer
Back-end Developer & Database EngineerContributions:73 commits, 23 PRs, 73 pushes in 4 months
Contributions summary:Esther primarily contributed to the back-end functionality, focusing on database interactions and PostgreSQL extension updates within the CartoDB location intelligence platform. They updated and maintained the cartodb-postgres extension, making version upgrades and addressing related issues. Furthermore, the user made changes to update industry options and associated database migrations, indicating work on data models and database schema. This work highlights a focus on database management and back-end development for the geospatial data visualization tool.
visualizationgeospatialgeofencinggeographyh3
esloho/dotfiles
Sep 2014 - Jul 2022
Contributions:12 commits, 20 pushes in 7 years 11 months
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