Sam Freiberg
Options Trader at Self-employed
Austin, Texas, United States
Summary
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RockstarSam Freiberg is an engineer-turned-options trader with 11 years of hands-on experience building and securing backend systems, primarily in Go, across companies from Google and Splunk to Teleport and Cisco. He combines deep SRE and systems expertise—working on audit logging, rate limiting, and secure OTP handling—with pragmatic library-level contributions like enhancements to the popular gotwilio Go client. Based in Austin, Sam is comfortable moving between production infrastructure, security hardening, and developer-facing APIs, and has a track record of fixing subtle bugs and improving API ergonomics. Now running his own options trading practice, he brings analytical rigor and risk-conscious engineering instincts to both markets and software.
11 years of coding experience
23 years of employment as a software developer
Stackoverflow
151reputation
3kreached
0answers
1question
Github Skills (19)
apidoc10
twilio-api10
audit10
sms10
security10
go10
api10
sms-messages10
teleport10
auditing10
logging9
360-video8
rate-limiting8
testing7
profiler6
Programming languages (6)
Github contributions (5)
sfreiberg/gotwilio
Sep 2014 - Jun 2022
Twilio library for Go (golang).
Role in this project:
Back-end Developer
Back-end DeveloperContributions:42 commits, 48 PRs, 48 pushes in 7 years 10 months
Contributions summary:Sam made several contributions to the `gotwilio` library, focusing on bug fixes and feature enhancements. They reverted a change related to user SID handling and implemented new features such as adding `group-small` video room type and VP8 codec by default. Furthermore, the user added `WithContext` methods to new code and fixed a compile error, indicating a focus on improving the library's functionality and API usability.
golangtwiliosmsvonagevoice
gravitational/teleport
Nov 2022 - Jan 2023
The easiest, and most secure way to access and protect all of your infrastructure.
Role in this project:Back-end & Security Engineer
Back-end & Security EngineerContributions:60 reviews, 29 commits, 49 PRs in 1 month
Contributions summary:Sam contributed to various security and backend aspects of the Teleport project. Their work included enhancing the security of the OTP QR code deletion process, escaping and handling maps in log entries for better logging, and fixing vulnerabilities in audit logging related to message size limits. Additionally, the user implemented code to remove default types from certificate rotation, adding rate limiting to unauthenticated routes to enhance security, and trimmed error messages for user login events.
pamsshrdpjumpserversecure
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