- Joined
- Oct 2025
- How they joined
- Directly
- Before Cognition
- KalshiHead of Infrastructure
- Status
- Current
Overlapped before Cognition
Sources1linkedin.com
Details
LocationMontevideo, Montevideo, Uruguay
Company sitecognition.ai
UniversityFacultad de Informática within Universidad Nacional de La Plata
Amazon Relational Database Service (RDS)TerraformAmazon RedshiftAmazon Web Services (AWS)DatastreamGoogle BigQueryData Build Tool (DBT)FirehoseDagsterApache KafkaPythonJavaScriptReact.jsDockerDjangoNode.jsPHPSymfonyHTML5CSSDesarrollo webSocket.ioWeb DevelopmentHTMLWeb 2.0JSONGitScrumFlaskNginxCaddyApacheBases de datosPostgreSQLMongoDBMySQLMicrosoft SQL ServerContinuous DeliveryRuby on RailsRuby
Notes
- Joined Cognition (maker of Devin and, since its July 2025 acquisition of Windsurf, the Windsurf IDE) as Data Engineer in October 2025, about three months after the Windsurf deal was signed; his headline cites AWS, Datastream and Google BigQuery.Oct 2025
- On 2024-04-04 he posted: 'Today we had a huge win at Kalshi! SIG, a major liquidity provider, joined us as a market maker. What an amazing milestone to be part of. Congrats to the entire team' - a teammate replied thanking him for 'setting up a killer infra in such a short amount of time'.Apr 4, 2024Today we had a huge win at Kalshi! SIG, a major liquidity provider, joined us as a market maker. What an amazing milestone to be part of. Congrats to the entire team 🎉
- Head of Infrastructure at Kalshi (CFTC-regulated prediction-market exchange) from May 2023 to October 2025, his longest recent role, moving straight from Kalshi to Cognition.May 2023
- Current role is Data Engineer at Cognition.
- Most recent open source: 'dubu', a simple OpenTofu web-based playground environment, created 2026-11-03 and pushed 2026-11-04.Nov 3, 2026
- Platform Engineer at Scale AI (Jul 2021 - Jan 2023): per his LinkedIn, he led devs to build within 30 days a scraper system able to scrape 5,000 different e-commerce sites in under a day, 'which ended up being one of the most important product at the company', and managed the crawling infrastructure while reducing its hosting cost.Jul 2021
- Staff Software Engineer at NaNLABS (Argentine software consultancy, Feb 2020 - Jul 2021): led design of infrastructure for a cross-datasource query resolver for data analysis and mentored engineers in Kubernetes and CI/CD.Feb 2020
- Senior Software Engineer at QwertySoft SRL (Apr 2018 - Feb 2020): built the entire HA infrastructure from scratch on self-managed Kubernetes and led engineers on apps including a face-recognition tool for police to find criminals.Apr 2018
- Public headline says "Data Engineer @ Cognition | AWS, Datastream, Google BigQuery".
- GitHub account kerbaras (name Matias Pierobon, company cognition.ai, location Uruguay, blog mpierobon.com) with ~70 public repos; top languages TypeScript, Rust, HCL, Python, Go.
- Actively builds 'mangas', a Rust desktop manga downloader and e-reader (Kindle) exporter; created 2025-07, still pushed in Oct 2026 and the main repo in his recent public GitHub activity.Oct 22, 2026
- Built 'astarion' (May 2025), a Python 'Game Master's AI Assistant Agent' for creating characters and answering lore questions - an LLM agent side project shortly before joining an AI-agent company.May 26, 2025
Previous roleKalshi
Experience
Data Engineer at Cognition
Oct 2025 - Present
Head of Infrastructure at Kalshi
May 2023 - Oct 2025
Platform Engineer at Scale AI
Jul 2021 - Jan 2023
- Leading devs to construct a scraper system under 30 days capable of scraping 5000 different e-commerce sites in less than a day which ended up being one of the most important product at the company - Manage and maintained the crawling infrastructure for scraping at scale and reducing its hosting cost over 80% across different providers
Staff Software Engineer at NaNLABS
Feb 2020 - Jul 2021
- Lead design and develop the infrastructure for a cross-datasource query resolver for data analysis - Fullstack engineer for different web systems - Mentored a group of engineers in k8s and ci/cd
Teacher Assistant at Facultad de Informática within Universidad Nacional de La Plata
Feb 2016 - Mar 2021
Teacher in Databases 101 at the University of La Plata in Argentina
Senior Software Engineering at QwertySoft SRL
Apr 2018 - Feb 2020
- Build the entire HA infrastructure from scratch with self managed k8s - Lead a group engineers building different kinds of apps such as a Face Recognition tool for the police force to find criminals
Full Stack Developer at Facultad de Informática within Universidad Nacional de La Plata
Dec 2016 - Sep 2018
Education
Facultad de Informática within Universidad Nacional de La Plata
Jan 2015 - Dec 2021
Bachelor's degree, Computer Science
Facultad de Informática within Universidad Nacional de La Plata
Jan 2016 - Dec 2019
Associate's degree, Computer Science
freeCodeCamp
Jan 2016 - Present
Full Stack Web Development Certification, Computer Software Engineering
Credentials
AWS Certified Security - Specialty
Recent posts
April 2024
Today we had a huge win at Kalshi! SIG, a major liquidity provider, joined us as a market maker. What an amazing milestone to be part of. Congrats to the entire team 🎉
November 2024
AWS Certified Security – Specialty was issued by Amazon Web Services Training and Certification to Matias Pierobon Marcos.
Profiles
Code
Repos70
Repos
Https://github.com/kerbaras/dubuHttps://github.com/kerbaras/mangasHttps://github.com/kerbaras/astarionHttps://github.com/kerbaras/linear-studioHttps://github.com/kerbaras/cloudlabHttps://github.com/kerbaras/tf-explainHttps://github.com/kerbaras/informatica-unlp
Languages
TypeScriptRustHCLPythonGo
