Alfonso Subiotto Marques
Staff Software Engineer at Polar Signals
Alfonso Subiotto Marques
Staff Software Engineer at Polar Signals
Spain
Overview
Work Experience
Staff Software Engineer
2024 - Current
Senior Software Engineer
2022 - 2024
Polar Signals is a profiling platform designed to measure and understand performance over time.
Raised $10,774,936.00 from Monica Sarbu, Spark Capital, Nikhil Benesch, Haystack, Lightspeed Venture Partners, Guillermo Rauch, Google Ventures, Lorimer Ventures, Julius Volz and Jimmy Zelinskie.
Venture Partner
2022
Lorimer Ventures backs bold entrepreneurs building exceptional B2B companies.
Senior Software Engineer Technical Lead
2019 - 2021
• Led efforts to productionize a distributed vectorized query execution engine which resulted in 4x performance gains for our customers. Link to the blog post below. • Led a team that worked on designing and implementing disk infrastructure and algorithms for queries with high memory usage. Link to the blog post below. • Led efforts to improve performance observability of SQL workloads. All my work is open source: https://go.crdb.dev/p/asubiottoprs
Software Engineer
2016 - 2019
• Worked on the initial version of our distributed SQL query execution engine. • Implemented first version of graceful server shutdowns for rolling upgrades without workload performance hits. • Partially implemented first prototype of a local vectorized SQL execution engine. All my work is open source: https://go.crdb.dev/p/asubiottoprs
Cockroach Labs is a software company that develops a cloud-native SQL database for modern cloud applications.
Raised $633,100,000.00 from Index Ventures, Coatue, Bond, Altimeter Capital, FirstMark, Greenoaks, Google Ventures, K5 Global, Lone Pine Capital and JP Morgan Chase.
Lead Developer
2014 - 2015
Software Engineering Intern
2014 - 2014
Eventually consistent storage.
Google is a multinational corporation that specializes in Internet-related services and organizes the world’s information.
Raised $26,100,000.00 from Angel Investors LP, Kleiner Perkins, Signatures Capital, Sequoia Capital, Arnold Schwarzenegger, Shaquille O'Neal, Henry Kissinger, Google and Tiger Woods.
Computer Science Teaching Assistant (CS16: Algorithms and Data Structures)
2014 - 2014
I was a teaching assistant for the introductory class on algorithms and data structures at Brown University, taught by David Laidlaw. I held office hours and graded projects and homework. Additionally, I taught small seminars with a fellow TA. These were multiple hour-long weekly meetings with subsets of students in which we reviewed and exercised concepts taught in class.
Computer Science Teaching Assistant (CS15: Programming in Java)
2013 - 2013
I graded student projects, held office hours and lab sessions, and amended lectures for the Intro to Programming in Java course (CS15) taught by Andy van Dam. This course had ~300 students.
Computer Science Tutor
2013 - 2013
I tutored students in Computer Science online at InstaEDU. These were mostly 2-3 hour lessons in which I helped students with Java, Python or Objective-C.
Software Developer Intern
2013 - 2013
I worked with a team of two developers, one designer, and one project manager to make one Android and two iOS apps, including building a node.js+MongoDB server for one of the iOS apps.
Education
Bachelor of Science - BS
2012 - 2016