Sameer Brenn - Principal Software Engineer at Spire Global, Inc.

Sameer Brenn

Principal Software Engineer at Spire Global, Inc.

Boulder, Colorado, United States

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Summary

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Senior

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Top School

Sameer Brenn is a Principal Software Engineer with 13+ years of experience building scalable, production-grade systems across finance, crypto, and large consumer platforms. He blends deep backend expertise in Scala/Java and distributed systems (Finagle/Finatra, Kafka Streams) with hands-on product instincts from founding and scaling multiple startups—including a sold cryptography company—and leading high-impact teams at Twitter and Hashflow. He has driven continuous delivery at internet scale, preserved revenue-critical streaming services, and built trustless exchange and automated market-making infrastructure for DeFi. An active contributor to notable open-source projects like Finatra and Pants, he focuses on resilient streaming, observability, and testable APIs. Based in Boulder, Sameer pairs rigorous financial modeling (MS in Mathematics in Finance) with pragmatic engineering and a knack for mentoring and operationalizing best practices across organizations.

13 years of coding experience

14 years of employment as a software developer

BA Economics, BA Economics at University of California, Berkeley

Math Farsi Arabic Serbo-Croatian, Math Farsi Arabic Serbo-Croatian at Arizona State University

MS Mathematics in Finance, MS Mathematics in Finance at New York University

English, Spanish

Stackoverflow

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Github Skills (31)

pytest10

python10

testing10

http10

build-system10

kafka-streams10

akka-http10

scala10

http-server10

junit10

tdd10

finatra10

build-tools10

test-automation10

api-design9

Programming languages (6)

TypeScriptJavaRustScalaObjective-CPython

Github contributions (5)

twitter/finatra

Mar 2018 - Jan 2021

Role in this project:

Back-end Developer

Contributions:9 commits in 2 years 10 months

Contributions summary:Sameer primarily focused on enhancing the Finatra HTTP framework, specifically improving how it handles streaming responses. They addressed issues related to client disconnections during streaming, refining logging to reduce noise. They also added new functionality for transforming and handling streaming data, including a transformer, callbacks, and an enhanced API. Furthermore, the user contributed to the Kafka Streams DSL by adding the `toCluster` call and the `delay` functions.

guicetwitter-serverfinagletestingframework

pantsbuild/pants

Oct 2015 - Jun 2017

The Pants Build System

Role in this project:

Backend & Test Automation Engineer

Contributions:13 commits, 14 PRs, 6 comments in 1 year 9 months

Contributions summary:Sameer primarily contributed to the test infrastructure and backend logic of the Pants build system. Their work involved creating a test task mixin to reduce code duplication across different languages, implementing timeout functionality for tests, and fixing bugs related to test result parsing. They also addressed issues related to how targets are handled in test failures and improved the presentation of suggested dependencies for build files. These contributions improved the reliability and maintainability of the testing framework.

pythonprotobufaws-lambdapantsshell

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