IoT Software:

• RabbitMQ (clustered)
• AWS IoT Core
• mosquitto
• InfluxDB
• Grafana
• Telegraf
• Prometheus

Cloud-Native Applications:

AWS Serverless Architecture Model (SAM) CloudFormation Infrastructure Automation CloudFront CDN Serverless REST/JSON:API/GraphQL APIs AWS Lambda

Web Frameworks:

• ReactJS UI
• CodeIgniter
• Expressjs
• Flask
• Tomcat

Networking Platforms:

• Cisco
• Juniper
• Mikrotik
• Linux-based firewalls
• Quagga
• BIRD
• FreeBSD/PF
• OpenBSD

Network Protocols:

• ARP
• OSPF
• BGP
• VRRP/CARP
• UPnP
• mDNS
• Intimate knowledge of TCP/UDP
• PXE/iPXE boot environments

Operating Systems:

• FreeBSD (very extensive)
• OpenBSD (extensive)
• Ubuntu (extensive)
• Debian (extensive)
• Raspbian
• Windows
• OSX

Software Development:

• Visual Studio Code
• gcc/g++/gdb/strace/ktrace
• make
• vi and a terminal
• Maven

IoT Hardware (recently used):

• Multitech MDOT
• Multitech Conduit AEP
• Raspberry Pi
• Arduino
• Beaglebone
• ESP32
• ESP8266

Languages:

• C/C++
• GoLang
• Python
• Node.js/TypeScript
• Java

Infrastructure Platforms:

• AWS
• Custom Datacenter/Bare Metal (extensive)
• Linode/VPS
• VMware vSphere (extensive)

Containers/Orchestration:

• Docker (extensive)
• docker-compose (extensive)
• Docker swarm (extensive)
• kubernetes

Standalone Web Applications:

• Apache
• nginx
• Tomcat
• lighttpd

Configuration Management:

• Puppet
• Ansible
• Terraform
• AWS CloudFormation
• Packer
• Consul
• Custom Scripting Overlays
• Diskless boot/read-only filesystem
• ManagEengine Desktop Central (MDM, Apple Business Manager)
• Microsoft SCCM

CI/CD:

• GitHub Actions
• Maven
• Jenkins
• CircleCI
• Apache Archiva
• Nexus
• Artifactory
• Sonarqube

Bare-Metal Storage Platforms:

• Oracle/ZFS
• Linux/ZFS/XFS/btrfs
• FreeBSD/ZFS (high IOPS performance NAS for scientific application)
• ixSystems/TrueNAS/FreeNAS
• Dell/EMC
• NFS
• iSCSI
• MinIO
• AWS/EBS/S3/EFS
• Samba/CIFS/SMB (AD-joined as well)

Cluster/Batch Queueing Platforms:

• Sun/Oracle Grid Engine
• HTCondor
• Jenkins
• Funnel

Databases:

• PostgreSQL
• MySQL
• InfluxDB
• SQLite
• HDF5
• AWS RDS/Aurora Serverless

System Monitoring:

• AWS CloudWatch
• PRTG
• Nagios
• Cacti
• TICK stack
• AWS CloudWatch
• RANCID
• Oxidized

IT:

• Microsoft Active Directory (on-prem, Azure AD and hybrid)
• Office 365 (including hybrid Exchange)
• Microsoft Licensing (and how it applies to virtualization, OEM/MVLS/Retail, CAL, MSDN)
• Google gSuite
• Regulatory Compliance & Audits (PCI-DSS, ISO27001, USDoE, Export Control Regulations, Banking, Overzealous GIS Departments)
• System Governence Policies
• Patch Management
• Enterprise Network Design
• Numerous VPN Solutions

Security:

• nmap (extensive)
• Nessus
• Various Managed Antivirus Suites
• Malware Scanning/Removal Tools