Karl Mueller

Karl Mueller Email and Phone Number

Staff Platform Engineer @ Sprig
Belmont, CA, US
Karl Mueller's Location
Belmont, California, United States, United States
Karl Mueller's Contact Details

Karl Mueller personal email

n/a
About Karl Mueller

30 years of operational experience at very fast-paced startups, almost all of it as the most senior devops or infrastructure person. I have experience with AWS, Kubernetes/EKS, ArgoCD, Helm, Terraform, automation, backend/infrastructure development in Java and Ruby, networking, and linux systems. I have always preferred the startup environment, and I enjoy the fast pace.I have worked hybrid and remote for 10+ years with high productivity levels, which is also my preference, although I live in the SF Bay Area.Current main job technical areas: Kubernetes (EKS), Helm, Terraform, Java and Spring Boot, Ruby on RailsMy experience is very broad - I'm not a guru-level expert at any one thing, but I have deep knowledge in many technical areas from using it in the real start-up environment. I feel this matches up well with the many hats you need to wear in small companies.

Karl Mueller's Current Company Details
Sprig

Sprig

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Staff Platform Engineer
Belmont, CA, US
Karl Mueller Work Experience Details
  • Sprig
    Staff Platform Engineer
    Sprig
    Belmont, Ca, Us
  • Piazza Technologies Inc.
    Sr Devops Engineer
    Piazza Technologies Inc. Sep 2015 - Present
    Palo Alto, California, Us
    Sole devops engineer at an online educational collaboration startup based in AWS. I was brought on board to relieve all devops responsibilities from the application engineering team. As a long-term employee at a startup, I have guided our platform through several architecture revisions.- migrated our entire legacy application stack into containerization and Kubernetes (EKS)- advocated for moving to and then implemented a modern GitOps and CI/CD-based approach to development, deployments, monitoring, and ETL using tools such as ArgoCD, Helm, Prometheus, Grafana, Loki, Sealed Secrets- migrated our single legacy AWS account to a modern IaC Terraform-based multi-account setup, in AWS technical areas like Transit Gateway, VPC, IAM and cross-account policy and permissions, security segmentation- responsible for the supporting infrastructure for the application, including: MongoDB (Atlas) ElasticSearch/OpenSearch, S3, Redis, etc.- modernized most of the application stack, moving from a standalone Java Jetty web app to Spring Boot, and updating the Ruby on Rails application stack from ancient versions (rails 2.3 and ruby 1.8) to the latest versions, relieving technical debt- provided significant backend development work in Java and Ruby in areas like redoing password authentication, large-scale email delivery, and internal pubsub messaging- implemented a sensible local development environment which reduced developer on-boarding time from days to minutes; initially, in bash-based scripting, then Docker compose, and finally local Kubernetes Others: helped implement integration testing with rspec/capybara/selenium, and some assisting with Jest, managing all our master infrastructure accounts, bash scripting, unit and integration testing frameworks, security and password / secrets control in shared password management (LastPass), Chef, VPN, internet routing
  • Walmart Ecommerce
    Principal Systems Engineer
    Walmart Ecommerce Apr 2011 - Sep 2015
    Bentonville, Arkansas, Us
    Part of @WalmartLabs.I worked as a Sr. Solutions Architect until September 2014. Since then, I worked as a Principal Systems Engineer. My focus there was on automation and programming with Ruby and Puppet. I also continued to maintain Cassandra nodes.
  • Kosmix
    Operations Architect
    Kosmix Sep 2005 - Apr 2011
    Us
    Ops Architect at a fast-paced small startup dedicated to a large health information site (righthealth.com) and social media content. Responsible for network, systems, system performance, monitoring, and overall direction of site operations architecture. Handled all (MySQL) database architecture at support until recently. Currently, focused on Cassandra architecture, deployment, and tuning. Responsible for much of the operational automation and maintenance tools.Environment is Linux, MySQL, Cisco, Force 10, and Netscaler with many open source tools, as well as custom-built tools.Kosmix was acquired by Walmart in April 2011, forming a new division called @WalmartLabs
  • Teneros
    Operations Architect
    Teneros Mar 2005 - Sep 2005
    Us
    Architect at a small startup specializing in online Exchange availability appliances. (But primarily dealt with back end which was Linux based)
  • Netsuite
    Datacenter Architect
    Netsuite Jan 2001 - Mar 2005
    Austin, Tx, Us
    Architecture role at a medium online financial service provider. Responsible for networking, most monitoring, systems performance, and systems architecture. Interfaced with developers, QA/release, and database teams to provide guidance and input to many long-term and day-to-day problems and solutions. Linux environment with primarily Cisco networking and Netscaler load balancers. Oracle running on Linux.
  • Mightywords
    Director Of Operations
    Mightywords Jun 2000 - Mar 2001
    Dir. of Ops at a digital publisher spin-off from Fatbrain / Barnes & Noble bn.com. Responsible for day-to-day operations of the infrastructure which served up content for both authors and consumers.Linux & Solaris environment with Oracle DBs and Cisco/Foundry networking equipment.
  • Orcus
    Co-Founder / Vp Of Operations
    Orcus Apr 1999 - Jan 2001
    Co-Founder of a network gaming startup which was trying to provide library and network / server capability for game developers.FreeBSD infrastructure
  • Best Internet Communications
    Sr. Network Architect / Director Of Network Engineering
    Best Internet Communications Apr 1995 - May 1999
    Primary network architect at a fast-growing regional ISP. Responsible for design and maintenance of entire network, routing, and systems communication. Later, technical manager of Network Operations team and subsequently Network Engineering, both small teams of dedicated network specialists. Still dealt with all architecture issues in this role, as well.Network environment was primarily Cisco, small and big iron, along with various other vendors like Livingston. Many types of Unix servers as well.
  • Portal Software
    Systems Administrator
    Portal Software Aug 1994 - Mar 1995
    San Francisco, Us
    Provided systems and technical support for a regional ISP, involving SunOS, modems, UUCP, etc.

Karl Mueller Skills

Linux Unix Tcp/ip System Architecture Solaris Databases Open Source Mysql Network Administration Data Center Scalability Server Architecture Networking Perl Network Architecture Automation Ruby Cisco Technologies Architecture Hadoop Software Development Apache

Frequently Asked Questions about Karl Mueller

What company does Karl Mueller work for?

Karl Mueller works for Sprig

What is Karl Mueller's role at the current company?

Karl Mueller's current role is Staff Platform Engineer.

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What is Karl Mueller's direct phone number?

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What are some of Karl Mueller's interests?

Karl Mueller has interest in Photography, Rollerblading, Sci Fi Fantasy Books, Jujitsu.

What skills is Karl Mueller known for?

Karl Mueller has skills like Linux, Unix, Tcp/ip, System Architecture, Solaris, Databases, Open Source, Mysql, Network Administration, Data Center, Scalability, Server Architecture.

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