Dan Theisen Email and Phone Number
Dan Theisen work email
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Dan Theisen personal email
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I am an Information Technology generalist with broad experience in numerous technology related fields. I love to learn new things, and I'm not afraid to admit when I don't know something. I enjoy applying my knowledge in useful ways for myself and others; solving problems makes me happy! I have a background in systems, networking, and infosec, and I've rapidly been improving my software development skills. Here's a relatively brief overview of some of the skills I bring to the table:Languages: C/C++, C#, Ruby, Python, Golang, ElixirVCS experience with Git, SVN, and CVSLinux Distributions: RHEL/CentOS (and other RPM based systems), Debian/Ubuntu (and other dpkg based systems), Alpine/Adélie (musl libc/apktools based), Gentoo, SlackwareBSD: FreeBSD, OpenBSD, NetBSD, and OS X (Darwin based systems)Microsoft: Windows Server, pretty much all desktop versions of Windows, extensive experience with the Microsoft Office SuiteCompetent at basic system administration tasks on IBM System i (AS/400)Experience in securing Linux machines on the hardware and software level.Knowledgeable about Directory Services (setup, configuration, maintenance, and trusts) including Microsoft Active Directory, FreeIPA, and IBM Domino; experienced at designing LDAP schemasCompetent at administrating various different web servers and frontend proxy servers including Apache httpd, lighttpd, nginx, Traefic, Varnish, and IISWeb Application Server experience with PHP, Java (Tomcat/Websphere/standalone), Rails, Python (WSGI), Golang, and other various languages using CGI or FastCGIDatabase experience using MySQL, PostgreSQL, MSSQL, and limited experience with Oracle and IBM DB/2Configuration management experience using Ansible and PuppetExtensive VoIP experience with Asterisk and Freeswitch (frontends and CLI) using Kamailio for SIP routingNetworking with Cisco IOS and ASA, Vyatta, Sonicwall, and "plain old Linux"VPN Implementation experience includes Cisco IOS/ASA and Freeswan/Strongswan IPSec, OpenVPN, PPTP, and WireguardGood understanding of static and dynamic routing protocols: OSPF, RIP, BGP, GRE, LISPExperience in DDoS MitigationTrained at performing horizontal and vertical CAT5, 5e, and 6 Cable Termination, Installation, Certification and 110/66 Block TerminationSpecialties: System Automation and DevOps; Information Security; Networking; VoIP; Customer Service
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Senior Network EngineerSeattle Public Schools Jul 2023 - PresentSeattle, Wa, Us
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DirectorSeattle Community Network Mar 2023 - PresentResponsible for green-lighting or halting various different initiatives within a community focused non-profit which strives to provide Internet access to marginalized and underserved communities.Acting as a Technical Lead for many networking related projects within the organization.Assisting with outreach and funding activities. -
Escalations EngineerInternet Systems Consortium Nov 2021 - Dec 2022Newmarket, Nh, UsActed as a technical liaison between customers and the development team, resolving software and configuration issues in a timely manner.Managed and maintained a suite of different DHCP client simulators, including perfdhcp or ISC Forge, to simulate different network scenarios.Worked on other related open-source software projects, including Stork and BIND 9, and occasionally diagnosed and fixed bugs in those projects.Developed numerous features for ISC Kea DHCP server to fulfill customer requirements. -
Senior Computer Software DeveloperComtech Telecommunications Corp. Feb 2020 - Oct 2020Chandler, Arizona, UsResponsibilities included setting up and maintaining multiple OpenStack environments for internal software development and testing, as well as writing Ansible playbooks to perform system automation and platform deployment tasks. My primary project while at Comtech involved designing and implementing various deployment mechanisms for a container based telecom VNFs on Kubernetes. -
Systems EngineerAmazon Web Services Jul 2017 - Sep 2019Seattle, Wa, UsPerformed various different system administration tasks including: application deployment, load balancer configuration, system and application troubleshooting, infrastructure automation, system monitoring, and more.Developed operational tooling to improve the consistency and ease the monotony of building new regions and performing system maintenance. Built multiple tools for my team, including: implementing a YAML-based DSL to define application and infrastructure alarms in code which allowed for a simple way to automate creation and modification of alarms; a ticket template system to automate creation of whitelisting and region stand-up tickets to other internal teams across multiple ticketing systems, significantly improved a host ordering and replacement tool that was written before my time on the team. -
Systems Engineer IForesee Jun 2016 - Jul 2017Ann Arbor, Michigan, UsWrite Ansible Playbooks and Roles to automate the management and deployment process of resources in Amazon AWS.Create automation system to replace usage of Elastic Beanstalk.Write a scripts to perform various operations, such as Version Control System migrations, tagging AWS resources, updating AWS Launch Configurations, and more.Various other development operations related tasks. -
Information Security ConsultantIt Risk, Ltd. Jan 2016 - Feb 2017Minneapolis, Mn, UsVarious projects: penetration testing, running social engineering campaigns, and gathering open source intelligence. -
Escalations EngineerBarracuda (Nyse: Cuda) Jul 2015 - Jun 2016Campbell, Ca, UsWork on support cases that are unable to be solved in support tier. Determine if the cases were escalated due to a bug or issue in the product, or if additional support training may be necessary.Perform Quality Assurance testing on the Barracuda Phone System to ensure stable releases and a good experience for customers.Write code for Automated QA testing of the product to improve the time it takes to run a full QA test run.Improve internal infrastructure and toolchain to make my team members' jobs easier and more streamlined.Write fixes/patches for bugs found in QA to alleviate load on development department. -
Network EngineerDatanational Corporation Dec 2013 - Jul 2015Farmington Hills, Mi, UsConfigure and manage Cisco routers, switches, and firewalls. Maintain a redundant network and monitoring infrastructure. Provide on-call support and quick problem resolution during disaster scenarios.Work with customers to establish VPN's for Disaster Recovery testing, High Availability hosting, and other hosted services. Help customers with networking related IT needs, such as firewall or ISP migration.Setting up, monitoring, and maintaining Websphere and Apache Tomcat application servers with both nginx and Apache HTTP reverse proxy servers. -
Level 1 Support TechnicianNexcess Feb 2013 - Jul 2013Southfield, Michigan, UsAnswer support tickets and phone calls to help customers with their websites and email and to solve server related issues. Support Magento and Wordpress websites. Perform MySQL database maintenance and administration. Primarily use CentOS 4 - 6, MySQL/Percona, Apache/Litespeed, PHP 4 and 5, and memcached. Wrote a custom phone queueing system for the Support Helpdesk and a queue web interface using Asterisk AEL dialplans and Perl. -
Networking ConsultantIt Risk, Ltd. Sep 2012 - Oct 2012Minneapolis, Mn, UsDesigning secure network layouts for clients. Full configurations and documentation of said layouts and configurations are provided to clients.
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Voice/Data LeadActive Solutions Group Oct 2011 - Aug 2012Dearborn, Mi, UsInstalled and configured Cisco and Sonicwall networks at customer sites. Set up and configured Asterisk PBX's with Grandstream, Polycom, and Digium endpoints. Performed system administration tasks in Windows and Linux environments. -
Linux Support InternNexcess.Net Jun 2010 - May 2011Southfield, Michigan, UsBuilt, configured, and installed servers for customers. Built kickstart image for Nexcess server imaging process. Completed basic tasks in a datacenter environment.
Dan Theisen Skills
Dan Theisen Education Details
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Henry Ford CollegeNetwork Administration -
Henry Ford AcademyCollege Preparatory
Frequently Asked Questions about Dan Theisen
What company does Dan Theisen work for?
Dan Theisen works for Seattle Public Schools
What is Dan Theisen's role at the current company?
Dan Theisen's current role is Networking, Sysadmin, Infosec, and Software Engineering.
What is Dan Theisen's email address?
Dan Theisen's email address is gi****@****ail.com
What schools did Dan Theisen attend?
Dan Theisen attended Henry Ford College, Henry Ford Academy.
What skills is Dan Theisen known for?
Dan Theisen has skills like Linux, Apache, Red Hat Linux, Security, Mysql, Centos, Networking, Cisco Technologies, Active Directory, Php, Servers, Dns.
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