Julian Simioni
Founder at Geocode Earth
São Paulo, Brazil
Summary
🤩
Rockstar🎓
Top SchoolJulian Simioni is a founder and veteran software engineer with 18 years of experience building geospatial systems from São Paulo. As CEO and co-founder of GeocodeEarth and a core maintainer of the Pelias open-source geocoder, he blends product leadership with deep hands-on work across front-end, back-end, and DevOps. His contributions to Pelias span website UX, API query and sanitization logic, and Docker-based infrastructure optimizations—including a parallel CSV importer and Elasticsearch tuning—demonstrating an ability to improve both developer experience and production reliability. Trained as an aerospace engineer at the Universidade de São Paulo, he brings rigorous systems thinking to mapping and search problems, often tackling non-obvious issues like analytics migrations and robust container startup sequencing. Colleagues rely on him to translate complex geocoding requirements into pragmatic, maintainable code and infrastructure.
18 years of coding experience
University of São Paulo
Stackoverflow
1,019reputation
59kreached
16answers
4questions
Github Skills (36)
docker10
website-development10
back-end-development10
apidoc10
amazon-elasticsearch10
bash10
docker-compose10
dockers10
analytics10
elasticsearchquery10
api10
aws-elasticsearch10
sanitization10
html10
elasticsearch10
Programming languages (21)
Github contributions (5)
pelias/docker
Jul 2018 - May 2022
Run the Pelias geocoder in docker containers, including example projects.
Role in this project:
DevOps Engineer
DevOps EngineerContributions:2 reviews, 181 commits, 140 PRs in 3 years 10 months
Contributions summary:Julian primarily focused on improving the Docker-based infrastructure for the Pelias geocoder. They implemented enhancements to the build and deployment processes, addressed issues related to container performance, and added features such as enabling TTY for colored output in tests. The user also optimized the Elasticsearch setup, including directory creation, permissioning, and startup procedures, while ensuring the Docker network initialization was robust. Furthermore, they introduced new functionalities such as the parallel CSV importer for data ingestion.
containersdockerexample-projectsgeocoderpelias
pelias/pelias
Oct 2015 - Sep 2021
Pelias is a modular open-source geocoder using Elasticsearch.
Role in this project:Front-end Developer
Front-end DeveloperContributions:173 commits, 87 PRs, 162 pushes in 6 years
Contributions summary:Julian primarily worked on the website components within the Pelias repository, modifying the Twig templates. Their contributions focused on implementing redirects for the pelias.github.io domain, removing an obsolete redirect, and incorporating updates related to analytics. The user also added a favicon and removed Mapzen branding. Moreover, the user was responsible for updating the Google Analytics to Fathom.
geocodermodularpeliaselasticsearch
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