Jesús Espino
Principal Software Engineer at Ona (formerly Gitpod)
Madrid, Community of Madrid, Spain
Summary
🤩
Rockstar🎓
Top SchoolJesús Espino is a Principal Software Engineer based in Madrid with 16 years of experience building full-stack systems and APIs, currently leading engineering efforts at Ona after senior roles at Mattermost. He brings deep expertise in Go, Python, and JavaScript, delivering back-end services, REST APIs and SPAs, and has repeatedly moved projects toward modular storage and permission architectures. Jesús is an active open-source contributor with notable work on Mattermost (server, mmctl, webapp) and contributions to high-profile projects like Cargo and Chia, demonstrating both systems-level and developer-tooling experience. He pairs hands-on implementation—adding CLI commands, WebSocket support, and new API endpoints—with documentation and UX improvements, showing attention to both developer and end-user needs. Comfortable spanning database design to front-end polish, he also has a history of early-stage engineering and ops (cofounder at Kaleidos Open Source), which helps him reliably ship production-ready software. Curious and pragmatic, he often focuses on making complex systems easier to operate and extend.
16 years of coding experience
19 years of employment as a software developer
Charles III University of Madrid (Universidad Carlos III de Madrid)
English, Spanish
Stackoverflow
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0reached
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Github Skills (70)
cargo10
python10
onclick10
clicking10
command-line-interface10
ux-design10
javascript10
mmc10
mattermost10
uid10
api10
front-end-development10
oneclick10
rust10
cli10
Programming languages (23)
Github contributions (5)
taigaio/taiga-front
Jun 2014 - Dec 2017
Agile project management platform. Built on top of Django and AngularJS
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:885 commits, 116 PRs, 437 pushes in 3 years 6 months
Contributions summary:Jesús's commits primarily focused on enhancing the Taiga front-end platform, integrating new features like a wiki and contributing to existing functionalities. They made improvements to the UI and user interface, and were also involved in integrating the wiki. Furthermore, this user made back-end changes for bulk task creation and a fix on external user permission on private projects.
pythondjangoweb-appsap-hanaon-top
mattermost-community/focalboard
Oct 2020 - Nov 2022
Focalboard is an open source, self-hosted alternative to Trello, Notion, and Asana.
Role in this project:Back-end Developer
Back-end DeveloperContributions:1003 reviews, 734 commits, 517 PRs in 2 years 1 month
Contributions summary:Jesús's commits primarily focus on improving the Focalboard server-side functionality. They addressed issues related to data marshaling and status codes, improved database interactions with the introduction of SQLStore and a table prefix, and added code for setting up the boards' permission handling. They made architectural changes by preparing the codebase to move the storage to another service and also added new API endpoints.
golangnotionasanahostedcollaboration
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