SAMUEL FREIBERG
Software Engineer / Site Reliability Engineer
Austin, TX · sam@heysam.org · heysam.org
github.com/sfreiberg · linkedin.com/in/samfreiberg

Experienced Software and SRE Engineer with a focus on high availability and
system architecture. Active open-source contributor whose software is featured
in three security books.

EXPERIENCE

ThetaFlow — Software Engineer                                   Mar 2025 – now
Remote
  ThetaFlow is currently in closed beta but has been running in production for
  several months.
  • Designed and built ThetaFlow.app in Go and PostgreSQL to automate
    end-to-end options trading strategies on multiple brokerages
  • Built an MCP server exposing a market-data archive to AI agents
  • Built an LLM pipeline that flags market-moving news and pushes cited
    briefs to iOS
  • Built a market-signal platform end to end: a Go/Postgres archive and rules
    engine with real-time APIs and push, plus its native SwiftUI iOS/macOS app
  • Built reliable job orchestration for trade execution, scheduling, market
    holidays, and duplicate prevention
  • Integrated real-time market data and historical backtesting to support
    strategy execution and development
  • Developed position/P&L tracking, trade conflict prevention, and user
    strategy configuration

Cisco (via Splunk acquisition) — Software Engineer         Sep 2024 – Mar 2025
Remote
  Continued role following Cisco's acquisition of Splunk.
  • Built a configuration-resolution prototype in Go
  • Led team discussions on operational pain points, informing offsite
    priorities and solutions
  • Developed LVM restore functionality to maintain data synchronization
    between active and passive stacks

Splunk — Software Engineer                                 Nov 2023 – Sep 2024
Remote
  • Worked on several Proof of Concepts to improve or reduce Splunk's
    dependency on Puppet to manage the 70,000+ servers
  • Update and improve Puppet configurations
  • Participate in code reviews
  • Participated in on-call rotation

Splunk (contractor via ITCO) — Software Engineer           Apr 2023 – Nov 2023
Remote
  • Worked on the Cloudworks Execution Service project
      ◦ Built out backend API and CLI tooling for interacting with the API
      ◦ Built out a generic database backend with a DynamoDB provider and
        model validation
      ◦ Implemented unit testing in GitLab CI/CD
      ◦ Refactored a Go Puppet library
      ◦ Code reviews
  • Mentored coworkers on Go and MR/PR best practices
  • Participated in on-call and monthly maintenance activities

Teleport — Software Engineer                               Oct 2022 – Feb 2023
Remote
  • Submit bug, documentation and security fixes to the open source and
    enterprise versions of goteleport.com. All code written in Go (Golang).
    Contributions to the open source repository can be found at
    github.com/gravitational/teleport/pulls/sfreiberg.
  • Numerous PR reviews
  • Backport security and bug fixes via git cherry-pick

Overhaul — Sr Site Reliability Engineer                    Aug 2021 – Oct 2022
Austin, TX
  • Manage ~10 Kubernetes clusters in AWS
  • Manage 12-15 applications in Kubernetes via Helm
  • Responsible for maintaining uptime and SRE best practices including post
    mortems, SLOs/SLAs and HA
  • Write Python and Go as needed for automation of the environment and
    Kubernetes improvements, including:
      ◦ Created gRPC client/server for managing portal DNS
      ◦ Creating custom modules for Pulumi (Python)
      ◦ Add Azure support for custom lifecycle controller in Kubernetes
      ◦ Add Azure backup functionality to custom CLI tool for managing etcd
        clusters within Kubernetes (Go)
  • Work with Datadog to add metrics and alerts

EARLIER

  Apr 2019 – Aug 2021   Google — Systems Development Engineer
  May 2018 – Apr 2019   Apollo GraphQL — Site Reliability Engineer
  Apr 2017 – May 2018   Planet — Sr. Mgr, Systems Administration
  Aug 2014 – Apr 2017   Google — DevOps Engineering Manager
  Sep 2013 – Aug 2014   Skybox Imaging — Sr. Site Reliability Engineer
  Apr 2013 – Aug 2013   Upthere — Senior Systems Engineer
  Oct 2011 – Mar 2013   Vertical Response — Senior Systems Engineer
  Jan 2010 – Aug 2014   netSerious — Developer/Owner
  Feb 2011 – Oct 2011   NIC Inc. — Systems Administrator
  Sep 2005 – Jul 2010   Barkley — Senior Systems Engineer
  Mar 2001 – Sep 2005   look and feel new media — Senior Systems Engineer
  Mar 2000 – Jun 2001   Planning Systems — UNIX Administrator

SKILLS

  Operating Systems: Linux, macOS
  Programming Languages: Go (golang), Swift/SwiftUI (beginner), Ruby (rusty),
    Python (limited), SQL
  Clouds: Google Cloud, AWS, VMware

→ full resume: https://heysam.org/resume