Mario De La Ossa
Senior Software Engineer at Fathom - AI Meeting Assistant
Managua, Nicaragua
Summary
👤
Senior🎓
Top SchoolMario De La Ossa is a Senior Software Engineer with 14 years of experience building secure, scalable backend and platform solutions across media streaming, cloud PaaS, and developer tooling. He combines deep Ruby on Rails and Go expertise with strong PostgreSQL and AWS systems experience, delivering production-ready features like app/database provisioning, logging, failover, and automated security controls. Mario has driven platform roadmaps and worn many hats—SRE, security administration, and recruiting—bringing a pragmatic blend of hands-on coding and operational ownership. He has contributed to the GitLab CE mirror, backporting fixes across services and the Merge Request API, demonstrating familiarity with large open-source codebases. Comfortable leading distributed teams and improving engineering processes, he also holds postgraduate training in information security, which informs his emphasis on audit-ready, HIPAA-compliant systems. Based in Managua, he’s equally passionate about mentoring engineers and evolving reliable systems that meet stringent security and privacy requirements.
14 years of coding experience
10 years of employment as a software developer
Postgraduate course Computer and Information Systems Security/Information Assurance, Postgraduate course Computer and Information Systems Security/Information Assurance at Universidad Americana (UAM)
English, Spanish
Stackoverflow
1,359reputation
30kreached
53answers
0questions
Github Skills (18)
ruby-rails10
rails10
ruby10
gitlab10
ruby-on-rails10
apidoc8
api8
postgresql7
amazon-elasticsearch7
aws-elasticsearch7
elasticsearchquery7
elasticsearch-api7
elasticsearch7
html6
jquery6
Programming languages (12)
Github contributions (5)
gitlabhq/gitlabhq
Dec 2017 - Jul 2019
GitLab CE Mirror | Please open new issues in our issue tracker on GitLab.com
Role in this project:
Back-end Developer
Back-end DeveloperContributions:105 commits in 1 year 7 months
Contributions summary:Mario primarily contributed to backporting changes within the GitLab CE mirror. These changes involved modifications to various Ruby files, including services, controllers, and models. The user also addressed bugs and implemented improvements across different areas like Banzai filters, chat notifications, and the Merge Request API. The work demonstrates expertise in the GitLab codebase and its underlying Ruby on Rails framework.
gitlab-cerubygitlabrails
mdelaossa/irc_lib
Jun 2021 - Mar 2025
Small simple Rust IRC lib
Contributions:6 PRs, 29 pushes, 8 branches in 3 years 9 months
ircrust
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