Gastón Tonietti
Staff Engineer at Demyst
Sydney, New South Wales, Australia
Summary
🤩
Rockstar🎓
Top SchoolGastón Tonietti is a Staff Engineer based in Sydney with over two decades of experience designing and operating backend services and a 12-year focused track record in functional programming. He builds resilient, high-performance APIs using Scala, ZIO and FP principles, recently powering white-label BNPL and embedded finance products and now contributing at Demyst. Gastón has led engineering teams through complex integrations and acquisitions (notably Spotcap into Zip), and has run engineering organizations end-to-end as Head of Engineering at BrickX. An active open-source contributor, he has made substantive core contributions to the widely used ZIO library, improving concurrency primitives and adding benchmark tooling. He blends hands-on systems work with developer coaching and CI/CD optimization, consistently reducing complexity through continuous refactoring and shared cross-cutting modules. Colleagues value him for combining deep FP expertise (Haskell enthusiast) with pragmatic delivery in cloud-native environments.
12 years of coding experience
20 years of employment as a software developer
Electronics Technician Telecommunications, Electronics Technician Telecommunications at EET N° 8 de HaedoInformatics Engineering, Informatics Engineering at Universidad Nacional de La Matanza
Spanish, English
Stackoverflow
190reputation
16kreached
7answers
1question
Github Skills (17)
async10
scala10
effects10
concurrency10
asynchronous9
zio9
functional-programming9
functional-programming-language8
concurrent8
stream7
immutability6
slf4j6
future6
mdc6
akka6
Programming languages (11)
Github contributions (5)
zio/zio
May 2018 - Aug 2018
ZIO — A type-safe, composable library for async and concurrent programming in Scala
Role in this project:
Back-end Developer
Back-end DeveloperContributions:79 commits, 39 PRs, 49 pushes in 3 months
Contributions summary:Gastón primarily contributed to the core functionality of the ZIO library, focusing on asynchronous and concurrent programming in Scala. Their work involved modifying and refactoring core modules, including `SafeApp`, `IO`, and `RTS`, to use more standard types and church-encoded APIs. The user also added a `benchmarks` module and optimized it by refactoring code.
functional-programmingqueuesstreamsasynchronicityasync
ktonga/vim-follow-my-lead
Sep 2015 - Nov 2020
Vim plugin for showing all your <Leader> mappings in a readable table including the descriptions.
Contributions:4 releases, 22 commits, 7 PRs in 5 years 3 months
vimreadableleadervim-pluginmappings
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