Has over 20 years of experience building and rehabilitating medium to large systems in fintech, political, and service provider industries with a focus on security, redundancy, and operations. Uses broad base of programming languages and hardware experience for faster problem remediation on new platforms. Loves to acquire new domain knowledge through technology. Hacks on random hardware (and plants) for fun.Successfully executed both full‑time and consulting roles as a senior individual contributor and manager of teams up to 20 people, from positions ranging from team lead to CTO. Expertise spans systems, networks, administration, programming, and real‑time operations in various company sizes with direct responsibility of daily revenue streams up to $10M.Skills Summary--** Infra / Cloud Linux server / desktop: Debian/Ubuntu, Qubes, Redhat/Centos/Fedora, Alpine, Guix (20+ years) Network administration: Arista, Cisco, Ubiquiti, Mikrotik, HP, F5 (20+ years) Python, Shell, C, C++, Perl, PHP (20+ years) Version control / build systems: git, mercurial, svn, ClearCase, Perforce, jenkins, gerrit, bamboo (20+ years)** Data / AI / Messaging Open source contributor and maintainer (20+ years) High volume / transactional email messaging: Sendmail, Postfix, Port25 (20+ years) Virtualization / Cloud: Xen, VMware, hybrid (15+ years)** InfoSec / Cyber SQL server administration / programming: MySQL/MariaDB, MSSQL Server, PostgreSQL, SQLite (15+ years) Web frontends: Python, Django, Drupal, Wordpress (15+ years) Embedded / handheld hardware: Android(Cyanogenmod/Lineage, e.Foundation, GrapheneOS) postmarketOS (10+ years)--