Maria Parnisari is a Senior Software Engineer with 12 years of experience building reliable backend systems, developer tools, and user-facing interfaces across cloud and security-focused products. She has shipped features at scale with AWS and Auth0/AuthZed, contributing to fine-grained authorization, CloudFormation linting, and infrastructure reliability while acting as a security champion. Equally comfortable in front-end React work and low-level backend improvements, her open-source contributions span UI UX enhancements in BoostNote to lexer and language support in the widely used Rouge highlighter and performance-focused changes in OpenFGA. Maria’s blend of hands-on DevOps, testing, and refactoring experience means she not only implements features but improves maintainability and developer workflows—evidenced by Windows fixes, CI improvements, and added test coverage across projects. Based in Vancouver, she brings a pragmatic engineering style shaped by roles at Amazon, AWS, and startups, plus a Computer Engineering degree from the University of Buenos Aires.
12 years of coding experience
11 years of employment as a software developer
Business & Economics, Business & Economics at Santa Teresa del Niño Jesus High School
Bachelor's Degree in Computer Engineering Computer Engineering, Bachelor's Degree in Computer Engineering Computer Engineering at University of Buenos Aires
A high performance and flexible authorization/permission engine built for developers and inspired by Google Zanzibar
Role in this project:
Back-end Developer
Contributions:1 release, 2478 reviews, 91 commits in 7 months
Contributions summary:Maria primarily contributed to the back-end of the project, focusing on code coverage, and moving queries to commands. Their work included fixing code coverage issues in the server and test files, as well as refactoring queries within the server code. The user also added unit tests to ensure the proper behavior of the different functions.
A pure Ruby code highlighter that is compatible with Pygments
Role in this project:
Back-end Developer
Contributions:9 commits, 11 PRs, 100 comments in 1 year 6 months
Contributions summary:Maria primarily contributed to the `rouge-ruby/rouge` repository by implementing lexer improvements and fixing bugs related to syntax highlighting. They added support for new file extensions, corrected parsing errors, and enhanced the highlighting capabilities for languages like Perl, CSS, HTML, and JavaScript. Furthermore, the user introduced a new lexer for JSP, expanding the repository's support for different programming and markup languages.
pure-rubyrubyhighlightercode-highlighterpygments
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Maria Parnisari - Senior Software Engineer at AuthZed