Mark Monteiro is a software developer with 11 years of experience building full-stack web and backend systems from startups to established teams, currently based in Guelph, Ontario. He contributes to notable open-source projects like Jellyfin, improving both the front-end UI/UX and backend search/metadata reliability while adding tooling and analyzer fixes that boost code quality. At Senti Solutions and prior roles he’s worked across web, API, and dev-ops adjacent tasks, demonstrating an ability to own features end-to-end and ship pragmatic refactors. His background spans Python, Tornado, MongoDB, and modern front-end practices, plus hands-on experience creating internal developer tools during an early support role at BlackBerry. Mark combines a University of Waterloo computer science foundation with international engineering study, and has a pattern of improving usability and observability rather than just adding features. He’s the kind of engineer who catches edge-case HTTP responses and turns them into clearer user messaging and maintainable code.
11 years of coding experience
7 years of employment as a software developer
Engineer's Degree, Computer Engineering, Engineer's Degree, Computer Engineering at Middle East Technical University
Bachelor of Computer Science, Computer Science, 4B, Bachelor of Computer Science, Computer Science, 4B at University of Waterloo
The Free Software Media System - Server Backend & API
Role in this project:
Back-end Developer
Contributions:10 reviews, 293 commits, 58 PRs in 6 months
Contributions summary:Mark primarily focused on fixing issues and improving the backend code related to episode search and metadata providers in the jellyfin/jellyfin repository, a free software media system. Their contributions involved fixing an episode search issue, cleaning up code by improving checks for dictionary keys, and adding documentation. They also enabled and fixed issues related to code analyzers like FxCop, Serilog, and StyleCop.
The Free Software Media System - Official Web Client
Role in this project:
Front-end Developer
Contributions:9 commits, 8 PRs, 24 comments in 2 months
Contributions summary:Mark primarily contributed to the web client's front-end, focusing on UI improvements and bug fixes. They addressed login issues by handling specific HTTP response codes and displaying appropriate messages. Several commits involved refactoring and cleaning up the networking settings page by reorganizing settings and introducing new HTTPS configuration options. Further commits included applying suggestions from code reviews, indicating a focus on code quality and user experience.
web-clientvideosreactjellyfin
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Mark Monteiro - Software Developer at Senti Solutions Inc