Mariano Simone
Principal Software Engineer at Félix
Denver, Colorado, United States
Summary
🤩
Rockstar🎓
Top SchoolMariano Simone is a Principal Software Engineer with 16+ years of experience building reliable, scalable systems across startups and large enterprises, currently helping scale Félix’s engineering org to improve financial access for Latinos in the US. He blends pragmatic engineering with a passion for best practices—TDD, CI/CD, code reviews—and excels at keeping teams productive while balancing simplicity, elegance, and shipping. At Stripe he cut developer setup time from ~20 minutes to under 10 seconds by designing cloud-based developer environments, and earlier work ranges from Android apps at Thumbtack to backend verification systems and automation for Android support libraries. An active open-source contributor, Mariano improved quality tooling like detekt (Kotlin static analysis) and strengthened testing for ruby/debug, showing deep attention to code hygiene and test infrastructure. He’s also an educator and coach (teaching problem solving at UBA), which he leverages to improve communication and knowledge flow across teams. Colleagues rely on him for thoughtful architecture, clear communication, and turning complex regulatory or operational constraints into practical engineering solutions.
16 years of coding experience
18 years of employment as a software developer
Bachelor of Science (B.S.) Computer Information Systems, Bachelor of Science (B.S.) Computer Information Systems at University of Buenos AiresBachelor's degree Exact and Natural Sciences, Bachelor's degree Exact and Natural Sciences at Colegio Nacional Dr. Arturo U. Illia
Spanish, English, Chinese
Stackoverflow
3,521reputation
158kreached
73answers
1question
google-app-engine
top-5%
kotlin
top-5%
Github Skills (51)
kotlin10
markdown10
debugging10
api-management10
debug10
duckduckgo10
typesc10
type-inference10
javascript10
static-analysis10
type-check10
sorbet10
handlebars10
testing10
css10
Programming languages (11)
Github contributions (5)
duckduckgo/zeroclickinfo-goodies
Jan 2015 - Aug 2017
DuckDuckGo Instant Answers based on Perl & JavaScript
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:24 commits, 12 PRs, 53 comments in 2 years 7 months
Contributions summary:Mariano primarily contributed to the development of a Markdown cheat sheet as an Instant Answer for DuckDuckGo, creating HTML and CSS files for the front-end display. They refactored the cheat sheet to use individual snippets instead of a full page, improving the user experience. Furthermore, the user enhanced the functionality by implementing trigger keywords and updating example queries.
javascriptduckduckgoinstant-answersperlinstant
duckduckgo/zeroclickinfo-spice
Jun 2015 - Jun 2017
DuckDuckGo Instant Answers based on JavaScript (JSON) APIs
Role in this project:Full-stack Developer
Full-stack DeveloperContributions:31 commits, 26 PRs, 113 comments in 1 year 11 months
Contributions summary:Mariano primarily focused on enhancing the DuckDuckGo Instant Answers (IA) functionality, demonstrating expertise in JavaScript and related technologies. They implemented new features like the CitiBike IA, and added improvements to existing IAs such as LeakDB, InTheaters, and News. The contributions involved modifying Handlebars templates, CSS, and various JavaScript and Perl files to improve usability and data presentation. Additionally, the user addressed bugs and refactored code to improve maintainability.
apijsjavascriptduckduckgoinstant-answers
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