Felipe Lessa
Senior Quantitative Developer
England, United Kingdom
Summary
🤩
Rockstar🎓
Top SchoolFelipe Lessa is a Senior Quantitative Developer based in England with 16 years of experience building production-grade systems across finance and tech. He blends quantitative modelling and software engineering at Standard Chartered, progressing from Quantitative Developer to senior roles while delivering data-driven trading and risk solutions. Felipe is an active open-source contributor with notable work on sqlx (Rust) and several influential Haskell web libraries, demonstrating deep expertise in database type handling, async systems, and cross-language backend tooling. His background includes fintech and platform roles at Deliveroo and Barclays and an early CTO stint at a startup, reflecting both hands-on implementation and leadership. Fluent in functional programming and low-level data interoperability, he often focuses on making complex time/date and persistence semantics robust in real-world systems.
17 years of coding experience
7 years of employment as a software developer
Bachelor's degree, Computer Science, Bachelor's degree, Computer Science at Universidade de Brasília
Portuguese, English
Github Skills (34)
ios10
sqlite10
testing10
http-header10
xamarin10
authentication10
yesod10
user-authentication10
facebook10
database-design10
dotnet-core10
rust10
csharp10
reactiveui10
haskell10
Programming languages (16)
Github contributions (5)
yesodweb/persistent
Sep 2011 - Mar 2016
Persistence interface for Haskell allowing multiple storage methods.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:108 commits, 1 PR, 12 pushes in 4 years 6 months
Contributions summary:Felipe primarily contributed to the `yesodweb/persistent` repository, a Haskell library for database persistence. Their work involved implementing features, such as enhanced comment support in the quasi-quoting module. The user also made several bug fixes to improve the code quality, specifically fixing typos and addressing connection handling. Furthermore, the user added tests for the rawSql query.
haskell
yesodweb/yesod
Dec 2011 - Nov 2015
A RESTful Haskell web framework built on WAI.
Role in this project:Back-end Developer
Back-end DeveloperContributions:92 commits, 1 PR, 1 push in 3 years 11 months
Contributions summary:Felipe's contributions primarily focused on the Yesod web framework, a Haskell-based RESTful framework. They fixed source repository locations, added features like Facebook logout support and access token management, and added Portuguese language support. The user also made adjustments to cabal files and version bumping for the yesod-auth and yesod-form packages.
haskellrestrestfulweb-framework
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