Independent consulting & technical contracting.
About
Tetra6 is an independent consulting and technical practice, built on 20+ years of hands-on experience across IT, systems and network engineering, cybersecurity, and software development.
The work spans a deliberately broad range — infrastructure and security engineering, web and mobile development, data and analytics — applied wherever it's actually needed, from government and mission-driven organizations to independent and community projects. Some of that work is public; see Projects below for real, shipped examples rather than a services list.
Tetra6 currently operates as an independent practice. Formal incorporation (LLC) is planned but not yet complete.
Capabilities
Six areas the practice works across — grounded in delivered work rather than a services menu.
Industrial & OT Systems
Manufacturing execution systems, OEE and production-data visibility, industrial connectivity, embedded and PLC-adjacent hardware.
Infrastructure & Security
Linux and network engineering, zero-trust segmentation, ICS/OT security, incident response, system hardening and monitoring.
Identity & Access
PIV smartcard credentialing and PKI, identity and access management across cloud providers, OIDC federation, Active Directory and LDAP.
OSINT & Threat Intelligence
Open-source collection and analysis, protective and threat-assessment work, insider-threat and counter-elicitation methods.
Software Engineering
Web platforms, progressive web apps, mobile, embedded firmware, and multilingual systems with heavy localization requirements.
Delivery & Leadership
Project management, multi-stakeholder coordination, technical training and documentation, cross-cultural and international delivery.
Cloud & Delivery
Tetra6 works across the major cloud platforms — Amazon Web Services, Google Cloud and DigitalOcean, with working Azure familiarity — covering hosting and compute, object storage, identity and access management, DNS, and automated build-and-publish pipelines.
Recent work includes an S3-backed content pipeline publishing through GitHub Actions with OIDC rather than long-lived credentials, Google Workspace and Apps Script automation, multilingual text-to-speech for narrated audio content, and migrating a self-managed server estate onto static hosting. Current AI and generative tooling gets used where it earns its place.
Founder
Robert Campbell
Founder
Twenty years across IT operations, manufacturing technology, and critical infrastructure security. Current work centres on manufacturing execution systems and industrial data environments — Linux, PostgreSQL, Python, APIs, and embedded and PLC-adjacent hardware.
Twelve of those years were spent in Laos, Cambodia and Thailand, delivering technology in resource-constrained, high-consequence environments: coordinating with government ministries and local partners, leading media and education infrastructure for a 400-student school, developing AI-driven agricultural diagnostics for crop disease and pest identification, and shipping the first native Lao-language Android application. Language and localization tooling built in that period remains in use today. He speaks Lao, Thai and Khmer from that work.
He holds CompTIA Security+ and credentials spanning ICS/OT cybersecurity, open-source intelligence, and threat analysis, and is an active member of FBI InfraGard, DHS HSIN, and the Association of Threat Assessment Professionals.
Certifications
CompTIA Security+ ce · Threat Intelligence & Analysis · A.A.S. Information Technology · Google IT Support, UX Design and Project Management Professional Certificates
Government & Defense Training
CISA ICS Cybersecurity 210W (complete series) · DCSA Insider Threat Analysis and Counterintelligence for the Defense Industrial Base · DoD Controlled Unclassified Information · Irregular Warfare 101
Intelligence & Protective
Intermediate OSINT · Global Espionage & Intelligence Services · Countering Information Operations · Elicitation & Counter-Elicitation · Executive Protection Principles · Overseas Personal Security
Infrastructure & Supply Chain
Infrastructure Liaison Officer · Global Intermodal Supply Chain · Principles of Protection for Critical Infrastructure · KiCad and STM32 hardware design
Affiliations
FBI InfraGard, Michigan chapter · DHS Homeland Security Information Network · Association of Threat Assessment Professionals · former Meeting Coordinator, InfraGard Kentucky Members Alliance
Languages
Lao, Thai and Khmer from twelve years of fieldwork · Russian and Spanish in progress
Projects
A sample of real, active work — web platforms, mobile apps, embedded firmware, and open-licensed language/design resources.
laochristian.org
Main site for a Lao-language Christian ministry — content, resources, and community outreach.
lao-christian-app
A Vue progressive web app delivering the same ministry's Bible, books, and media content as an installable app.
readiness-platform
Training curriculum platform for the Missionary Readiness Institute, built on MkDocs.
More on GitHub.
Connect
A dedicated Tetra6 LinkedIn Page is planned once the business is formally incorporated — for now, the personal profile above is the best place to connect.
Contact
Submissions go straight to me — I'll get back to you as soon as I can.