Hello, I'm David. I'm a
Linux Systems Engineer
who loves building awesomeness
Hire Me!

15

high-tech companies

65

successful projects

100%

linux servers

20

software languages

17

automation tools

Development Expertise

I'm passionate about engineering secure, reliable operations. I'm highly talented in IT Ops, DevOps and NoOps. My expertise is systems integration, server engineering, and network management. I leverage technologies to deliver trusted solutions via both best practices and security standards. I deliver efficiency and cost-effectiveness that keeps infrastructures running smoothly every day. I automate services so infrastructures are always up and responsive.

Systems Integration

I have a rich history which includes interoperability, migrations, low-level programming, reverse engineering, and technical documentation.

Server Engineering

My forte is servers. I engineer excellence inspired by concepts and ideas. I engineer high performance and high availability. I engineer servers from scratch.

Network Management

I promote company objectives through security policies. I deliver efficiency and cost-effectiveness. I keep networks running smoothly.

History of Project Delivery

I've engineered complex systems in a mix of modern, industry-standards and open source technologies; then maximized life expectancy through optimization, proactive maintenance, and documentation. I've engineered user-friendly systems best for company objectives. I've developed software from scratch to specifications to customize stacks.

  • Be Part
    Of My
    Story!

  • Jan 2016 – Present

    DeepSentry.com

    Architected the Big Data infrastructure for an intelligent managed security provider that remotely enforces right behaviors to prevent 0-day attacks.
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  • May 2016 – Present

    DevOpsBuilder.com

    Engineered custom CI/CD pipelines, automated virtual appliances, and test-automation platforms, via independent consulting services.
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  • Sep 2015 – Dec 2015

    Time Warner Cable

    Led black-box testing of OpenStack Swift in data centers nationwide for migration of OpenStack Kilo to OpenStack Liberty.
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  • Mar 2015 – Sep 2015

    CenturyLink

    Engineered bare-metal cloud platforms for on-demand, high performance telco microservices based on SDN and NFV using an OpenStack ecosystem of Open Source software.
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  • Jun 2013 – Dec 2014

    Ramsey Grant Brenner & Co, Inc. dba OSDisc.com, NuevoCloud.com, and others

    Engineered network operations for five e-commerce companies, OSDisc.com and NuevoCloud.com and three upcoming companies, compliant with PCI DSS 2-3.
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  • Aug 2012

    Ramsey Grant Brenner & Co, Inc. dba OSDisc.com and others

    Engineered a fully automated virtual security appliance based on FreeBSD and Open Source software, critical to PCI DSS 2 compliance.
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  • Apr 2011 – Nov 2012

    ResolveBug.com

    Engineered a small international business that provided on-demand engineering of Linux servers with Open Source software via both same-day emails and remote administration.
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  • Mar 2010 – Feb 2013

    University of Colorado at Denver

    Engineered network operations for cloud of virtual servers and multimedia desktops based on Linux and Open Source software; compliant with UCD IT Policies, Modern Languages Lab Policies.
    Read more

  • Jan 2010 – Dec 2010

    Ramsey Grant Brenner & Co, Inc. dba OSDisc.com

    Engineered another first to market product that involved reverse-engineering similar technology found in Open Source software: Live Linux with Integrated Read-Write Storage.
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  • Jan 2009 – Dec 2009

    Ramsey Grant Brenner & Co, Inc. dba OSDisc.com

    Engineered a first to market product that involved reverse-engineering similar technology found in Open Source software: Software Repositories on CD/DVD Media.
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  • Aug 2005 – Jan 2008

    Ramsey Grant Brenner & Co, Inc. dba OSDisc.com

    Engineered resolution of systems integration issues of bleeding-edge and cutting-edge Open Source technologies in Linux, BSD, Solaris.
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100% Code Ownership

2012–2016

DeepSentry Security Software

Cyber security intelligent agent that uses machine learning to remotely enforce the right behaviors of both users and services.

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2011–2012

Website Templates

Clean, modern e-commerce website scripted fully modular and cross-compatible with top eight web browsers. Average load time 1.3-1.4 seconds per page.

Click here

2011–2012

Encrypted Checkout

Java servlet encrypts HTTP 1.1 session data over TLS as AES 256-bit file then responds with credit card payment form hosted on Authorize.net.

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2011–2012

Dynamic Knowledge Base

Determines statistical relevancy of keywords related to problems within collection; both keyword order and keyword position return results as links.

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2009

Combinatorics Engine

Returns every possible combination of list of subjects and their components as fuzzy search-strings for Google, Yahoo, AOL, and MSN.

Click here

Awesome Technical Skills

Code Development

AngularJS, Bash, Bootstrap 3-4, C, C++, CLISP, CSS3, D3.js, Expect, Flot.js, GCC+GDB, Git, Golang, Gorilla, HTML5, Java, JavaScript, Jenkins, Jinja2, jQuery, JUnit, LESS, Lua, Node.js, Perl, PHP5, Prolog, PyTest, Python3, R, Ruby, Rust, Scheme, Selenium 2.0, PLPGSQL, SVN, TestNG, Valgrind

Development Methods

Agile, BDD, Cleanroom, Extreme Programming, Incremental Build, Iterative Development, Kanban, Lean, Lean Agile, Lean Scrum, Scrum, SDLC, TDD, Unix Philosophy, Waterfall

Automation & Orchestration

Ansible, Bash, Cobbler, Expect, Icinga, Nagios, Perl5, Puppet, PXE Booting, Python3, Ruby, SuperMicro Server Manager, Vagrant

Big Data Platforms

Amazon Cloud (AWSCLI, AWSConfig, CloudFormation, Cognito Identity, DynamoDB, EC2, ElasticCache, Elastic Beanstalk, ELB, Glacier, Kinesis Streams, IAM, OpsWorks, RDS, Route53, S3, SMQ, VPC, WAF), OpenStack (Cinder, Glance, Heat, Ironic, Neutron, Keystone, Nova Compute, Swift)

Server Platforms

Apache HTTP Server, Apache Mesos, CentOS/RHEL, Cisco C-Series Rack Servers, Citrix XenServer, Debian, Docker, FreeBSD, Libvirt API, LXC, SuperMicro Blades, Ubuntu Server, VMware (ESXi, vCloud Director, vCenter Server Appliance)

System Messaging

Dovecot, Elasticsearch, Galera Cluster, Graphite, Kafka, Kibana, Memcached, MySQL, PostgreSQL, RabbitMQ, Redis, Rsyslog, Sendmail, SQLite3, Syslog-ng

SAN & NAS

Ceph, DRBD, FreeBSD-ZFS, GlusterFS GeoRep, iSCSI (IET, istgt), LVM, Multipath, NFS, Open-iSCSI, Proftpd, RAID, Rsync, SMB/CIFS, VMware (vSphere, vSAN), WebDAV

Network Security

GnuTLS, IPSec, IPtables/6, Nmap, OpenLDAP, OpenSSH, OpenSSL, OpenSwan, OpenVPN, OWASP, PCI DSS, Sagan, Samhain, SELinux, SNORT, StrongSwan

Network Routing

Arptables, BIND9, CAT2-6 Cabling, DHCPd, Ebtables, HAProxy, IPMIv1-2, IPRoute2 Policies, IPtables/6, Juniper SRX Services Gateways, Nginx, Open vSwitch, PGBouncer, SM/MM FC, SNMPd, TCPwrappers, Traffic Control (tc), Vconfig

Relevant Higher Education

Jan 2010 - Dec 2014

University of Colorado at Denver

Bachelor of Science, Business Administration & Information Technology, GPA 3.2/4.0, Academic Awards: 2Read more

Completed 8 courses in information technology

Completed 9 courses in business administration

Completed 7 courses in math and other

Jan 2008 - Jan 2010

Community College of Denver

Associate of Science, Business Administration & Information Technology, CCD's Phi Theta Kappa Honor Society, GPA 3.9/4.0, Academic Awards: 4Read more

Completed 10 courses in information technology

Completed 3 courses in business administration

Completed 8 courses in math and other

Read my blog

Sample my engineering techniques and engineering guides. Read about current trends in high performance. Learn how to engineer a VMware vSAN. Learn about continuous integration best practices. Learn the how to of secure Linux programming. Understand the uses of Big-O notation. And more!

Contact Me