Experience

Senior Security Engineer • June, 2021 - May, 2025

Handled identity and access management for GitHub’s workforce, coordinating closely with HR, Legal, IT, and incident response teams.

  • Managed the company-wide entitlements platform and maintained security across countless internal and external services.
  • Pushed for disaster recovery on identity (LDAP) infrastructure that had been neglected for years, built an interim backup, and got management buy-in. The formalized DR plan was eventually built after I left, based on this groundwork.
  • Built custom ruby tooling (a JIT LDAP provisioner for temporary access, chatops integrations, etc) to make day-to-day security operations less painful.
  • Built tarball-based deployment paths for critical tooling, eliminating a circular dependency on GitHub’s own availability during outages.
  • Migrated ~8 years of accumulated security operations code and docs during a major reorg, mostly without anyone noticing.
  • Moved 100+ repositories from legacy Jenkins to GitHub Actions.
  • Coordinated employee offboarding with HR and Legal, and was on the critical path for incident response – emergency access revocation, secrets rotation, urgent action.

SRE/Devops Manager • October, 2019 - October, 2020

Managed SRE/devops and a small Data Services team for a non-profit CRM SaaS platform in GCP.

  • Set up on-call rotation and a statuspage so the support team would stop learning about outages from customers.
  • Completed a long-overdue major Postgres upgrade on production.
  • Built tooling to automate the Data Services team’s manual import and sanitization work – tedious, error-prone stuff that had been done by hand.

Director of IT/Security • September, 2015 - September, 2019

Modernized infrastructure and cleaned up security for an Alibaba-backed e-commerce platform with a small team spread across the US and Romania.

  • Migrated the production stack from leased baremetal to Alibaba Cloud, introducing terraform and modernizing configuration management throughout, despite limitations of both terraform and alibabacloud. Shut down the on-premises datacenter afterward. Saved them a ton of money, I think.
  • Fixed critical security gaps left by previous operations: unsegmented network tunnels between offices and production, unauthenticated database access, passwordless root credentials scattered around the environment.
  • Replaced a flaky hardware SSL VPN with OpenVPN, bringing VPN management into infrastructure-as-code and letting the distributed team self-serve access.
  • Built properly segmented VPCs for production, development, and intranet – network isolation that simply hadn’t existed before.
  • Pivoted from what i was originally hired to do (security-focused mandate) to the infrastructure overhaul the company actually needed (helping fix, modernize and secure things from basically all angles)

CentreSource, Inc.

COO • May, 2004 - September, 2015

Operated a web and application development agency (30-50 employees, ~$3-5M revenue).

  • Built and ran a managed anti-spam/email filtering service as a standalone product. Operated profitably before being wound-down due to increasing competition/changing market.
  • Built the agency’s web development practice, making pragmatic technology calls across a landscape that wouldn’t stop shifting (PHP, Rails, early mobile) – balancing reliable delivery against evolving client needs.
  • Pushed the agency from fixed-bid pricing to a billable-services model, eliminating the chronic budget fights that come with pretending you can predict what development work will cost.
  • Ran the business side as COO: P&L, financial reporting, contracts, forecasting, scheduling, and a small operations team.

Systems Engineer • May, 2001 - May, 2004

Sole systems engineer for a state-wide K-12 network supporting over 250,000 computers and one million users, driving Linux adoption and building tooling for a team of 12+ network engineers.

  • Migrated 60,000+ email accounts from a legacy DEC Alpha OpenVMS system to a modern Linux-based stack, designing and deploying the full replacement (MTA, LDAP, IMAP) solo.
  • Designed and deployed a redundant, anycast DNS infrastructure for nearly 500 domains, and built an early CI/CD-style workflow around CVS with automated validation hooks so network engineers could self-serve DNS changes safely.
  • Automated router provisioning and configuration management across the state-wide network – version control for infrastructure before that was a term of art.

Skills

Infrastructure & Cloud: AWS, GCP, alibaba cloud, proxmox, vmware, terraform/opentofu, kubernetes, docker/compose

Configuration & Automation: ansible, puppet, make, ci/cd (github actions, jenkins, et al.)

Observability & Monitoring: nagios, grafana, datadog, splunk, pagerduty, tailing a log file with my own eyes

Security: IAM/access management, SSO/identity protocols (SAML, OAuth/OIDC, SCIM, Okta), TLS/PKI (letsencrypt, digicert, et al), secrets management (vault/openbao), VPN (wireguard, openVPN, IPsec), vulnerability/secret scanning (trufflehog, grype, dependabot/renovate, etc)

Networking & DNS: TCP/IP fundamentals, DNS infrastructure (NSD, unbound, BIND), firewall design (openbsd/pf, iptables), reverse proxy/edge (traefik, cloudflare), enterprise network hardware (F5 BIG-IP, Cisco, Juniper)

Languages & Scripting: bash, python, ruby, SQL, git

Systems & Data: linux (ubuntu, debian, mediocre redhat-derivatives), openbsd, postgresql, mysql, mongodb, openldap, redis

Practices: declarative infrastructure-as-code, gitops, containerized/reproducible environments, disaster recovery

LLM-Assisted Engineering: LLM-assisted development and automation -- advocate for secure, deliberate and intentional adoption.

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