Tomás Lázaro
Staff Software Engineer at Datavant
San Francisco, California, United States
Summary
🤩
Rockstar🎓
Top SchoolTomás Lázaro is a Staff Software Engineer with over 15 years building systems from assembler-driven embedded devices to large-scale, cloud-native data platforms, now focused on Scala and functional programming. He has led cross-team initiatives at Twitter and Netflix to modernize batch and streaming data processing—making thousands of jobs runnable on Dataflow via a Scalding-on-Beam effort—and helped define feature engineering infrastructure at Netflix that unifies batch and real-time pipelines. Comfortable in both low-level and high-abstraction domains, Tomás combines hands-on contributions (notably fixes and extensions to the widely used Scalding project) with senior technical leadership across migrations to GCP and production ML pipelines. Based in San Francisco, he seeks Staff-level roles working with Scala/functional languages and brings a track record of shipping robust, highly available systems while mentoring teams and driving cross-organization alignment.
15 years of coding experience
17 years of employment as a software developer
Engineer Computer Science, Engineer Computer Science at Universidad Católica del Uruguay 'Dámaso Antonio Larranaga'
Stackoverflow
315reputation
7kreached
8answers
3questions
Github Skills (17)
scala10
data-processing10
apache-beam10
database-api9
databases9
database9
parquet8
sql8
transform6
swing6
clojure6
code-generation6
benchmarking6
python6
ruby6
Programming languages (10)
Github contributions (5)
twitter/scalding
Sep 2020 - Jan 2022
A Scala API for Cascading
Role in this project:
Back-end Developer
Back-end DeveloperContributions:34 reviews, 9 commits, 11 PRs in 1 year 4 months
Contributions summary:Tomás primarily focused on improving the Scalding library's back-end functionality. Their work involved addressing serialization issues within the `TypedPipe.groupRandomly()` function by implementing `EquivSerialization`, along with adding support for new data types to the `TypedJDBCSource` used to connect to SQL databases. The user also addressed a bug related to `DeprecatedParquetInputFormat` and made improvements to the beam backend by adding custom join functions. These modifications demonstrate a focus on data processing and database interaction.
scala
tlazaro/sloth
Mar 2011 - Nov 2014
Contributions:44 commits in 3 years 8 months
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