Milos Vyletel, Developer in Brno, South Moravian Region, Czech Republic
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Milos Vyletel

Verified Expert  in Engineering

Software Developer

Location
Brno, South Moravian Region, Czech Republic
Toptal Member Since
November 3, 2020

Milos is a talented DevOps specialist with over a decade of experience. He excels in projects involving Kubernetes and RedHat and has worked as a Kernal support engineer. Milos helped develop a custom, in-house Linux-based OS, maintained a fleet of 500+ bare metal servers, led security hardening efforts, and managed the entire deployment of projects, including upgrades and network layout. He is a results-oriented professional with the technical chops to deliver clean, high-functioning products.

LinuxGitSlackGoogle CloudDevOpsSaltStackPackerNexusNGINXOpenStackCTelecommunicationsTerraformAnsibleUbuntuKernelBGPGeneric Programming

Portfolio

Kiwi.com
Amazon Web Services (AWS), Border Gateway Protocol (BGP), Networks, Kernel...
Oracle/NetSuite
OpenStack, Content Delivery Networks (CDN), NGINX, Squid, Nexus, Packer...
RedHat
Performance Tuning, ASM, C, Vmcore, Kernel

Availability

Part-time

Preferred Environment

BSD, IRC, Slack, Git, Linux

The most amazing...

...project I prototyped and later led a team in developing was a Rancher-based Kubernetes cluster solution.

Work Experience

Staff Engineer

2019 - PRESENT
Kiwi.com
  • Prototyped and led the team that deployed self-managed Kubernetes on bare metal servers.
  • Deployed and maintained networks (IPsec and dedicated lines) between clouds and bare metal data centers.
  • Led the team that maintained a fleet of 500+ bare metal servers.
  • Spearheaded efforts to benchmark and tune applications running on bare metals servers.
Technologies: Amazon Web Services (AWS), Border Gateway Protocol (BGP), Networks, Kernel, Hardware, Google Cloud, Linux

Senior Software Engineer

2016 - 2019
Oracle/NetSuite
  • Upgraded development and production environments from Oracle Linux 6 to Oracle Linux 7.
  • Tuned Kernel and performance enhancements on a fleet of virtual machines in AWS.
  • Oversaw the low-level infrastructure for content delivery networks (CDN), automated deployments in cloud, and OpenStack.
Technologies: OpenStack, Content Delivery Networks (CDN), NGINX, Squid, Nexus, Packer, SaltStack, DevOps

Software Maintenance Engineer

2014 - 2016
RedHat
  • Served as the backline support engineer in RedHat's customer-focusing core kernel subsystems such as memory and scheduling.
  • Fixed bugs and issues found in the upstream Linux kernel.
  • Managed the backport of upstream fixes back to the RedHat enterprise Linux kernel.
Technologies: Performance Tuning, ASM, C, Vmcore, Kernel

Senior Software Engineer

2008 - 2014
Software Development Europe
  • Developed a custom operating system with a team for servers running on core telecommunications networks.
  • Led efforts that focused on the security hardening of OS, such as Selinux and FIPS.
  • Collaborated with the application team as the sole DevOps member responsible for the entire deployment, upgrades, and network layout.
Technologies: Telecommunications, Operating Systems

Bare Metal Kubernetes Cluster

I prototyped and later led the team working on a Rancher-based Kubernetes cluster solution. Rancher was chosen primarily as a user-friendly front end for cluster access and management. The entire solution is fully automated via Terraform and Ansible. The most interesting part of this project is its network design. This was based on Calico and was seamlessly integrated into the existing network to offer cloud-native networking (PODs as first-class entities on the network) and BGP-based L4 load balancing (thanks to MetalLB). Currently, I am developing the next generation clusters based on Node K3S with Cilium and looking into eBPF in general.
2006 - 2009

Bachelor's Degree in Information Technology

Brno university of Technology - Brno, Czech Republic

Tools

Git, Slack, SaltStack, Packer, Squid, NGINX, Terraform, Ansible

Frameworks

ASM

Languages

C

Paradigms

Generic Programming, DevOps

Platforms

Linux, BSD, Kernel, Nexus, OpenStack, Ubuntu, Amazon Web Services (AWS)

Storage

Google Cloud

Industry Expertise

Telecommunications

Other

IRC, Hardware, Networks, Border Gateway Protocol (BGP), Content Delivery Networks (CDN), Vmcore, Performance Tuning, Operating Systems, MetalLB, Calico, eBPF

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