Mustafa Kubilay Yalniz, System Administration Developer in Istanbul, Turkey
Mustafa Kubilay Yalniz

System Administration Developer in Istanbul, Turkey

Member since April 16, 2016
Mustafa has more than 20 years of experience in systems and software deployed on Linux platforms. He has extensive scripting/coding experiences both as a systems and software engineer. He has very strong skills in DevOps, SaaSOps, and Linux systems engineering.
Mustafa is now available for hire


  • bcheck
    Ansible, Terraform, Bash, Perl, ELK, Linux, Ubuntu, Red Hat, Nexus, Ambari...
  • Aurea
    VMWare, AWS, SDDC, EC2, EFS, Python, ELK, Linux, Git, CI/CD, Gitops
  • Aurea
    Atlassian Jira, Linux, AWS, MySQL, Aurora MySQL, PostgreSQL, Docker...



Istanbul, Turkey



Preferred Environment

Linux, AWS, Ansible, Docker, Terraform

The most amazing...

...thing I've implemented was a performance test infrastructure with native Linux tools to automatically execute tests and present/compare results in web.


  • Senior DevOps Engineer

    2019 - PRESENT
    • Set up a Cassandra data cluster with Ansible and Bash.
    • Set up a computing cluster (Ambari, Spark, Hadoop) with Ansible.
    • Set up ELK and scripts to push data to logstash.
    • Set up ELK beats on the data and compute clusters.
    • Prepared Perl, Bash, and Python scripts for automation and data retrieval.
    • Set up AWS resources for a computing cluster with Terraform and ready for Ansible.
    • Managed git repositories and pipelines in bitbucket.
    • Setup Apache Airflow jobs to cleanup logs.
    • Manage AWS Resources.
    Technologies: Ansible, Terraform, Bash, Perl, ELK, Linux, Ubuntu, Red Hat, Nexus, Ambari, Hadoop, Spark, Cassandra
  • Senior Site Reliability Engineer

    2019 - 2019
    • Provisioned and managed infrastructure with Terraform, Ansible, and Jenkins.
    • Set up and managed VMWare SDDC in AWS with NSX and storage.
    • Migrated L&S servers from legacy datacenter to AWS VMWare.
    • Reconfigured Lifted Centos Linux servers.
    • Set up and managed Elasticsearch, Logstash, Kibana stack.
    • Set up CI/CD pipelines and implemented GitOps.
    • Created Docker images and managed Docker containers and images in DTR.
    • Set up and managed AWS resources.
    Technologies: VMWare, AWS, SDDC, EC2, EFS, Python, ELK, Linux, Git, CI/CD, Gitops
  • Senior SaaSOps Chief Architect

    2018 - 2019
    • Provided system administration of Atlassian Jira in AWS(using EC2 and RDS ).
    • Oversaw application administration of Kubernetes on legacy and AWS.
    • Optimized Atlassian Jira with more than 4000 users and a huge number of schemes and automations.
    • Managed Linux web server installations.
    • Created and maintained deployments with Ansible and Docker.
    • Setup and Manage AWS Resource.
    Technologies: Atlassian Jira, Linux, AWS, MySQL, Aurora MySQL, PostgreSQL, Docker, Kubernetes, Ansible, Git
  • Senior Systems Engineer for Web Applications

    2010 - 2019
    Ciner Media Holding (haberturktv, showtv, bloomberght)
    • Managed Linux, Nginx, PHP-fpm, MySQL stack.
    • Installed, configured, and managed various open source software on Linux.
    • Set up CDN with varnish and nginx.
    • Generated RPM packages for custom installations.
    • Configured and managed MySQL replications.
    • Advanced bash and Perl scripting for systems engineering.
    • Monitored with Cacti, Nagios, and Zabbix.
    • Configured Nginx with Memcache and Redis.
    • Installed and managed software on Tomcat.
    • Initiated use of puppet for linux systems settings.
    • Set up multiple HDFS.
    • Implemented Hadoop MapReduce for some data processing.
    • Developed php web applications.
    Technologies: Linux, Nginx, PHP-fpm, MySQL, Varnish, Haproxy, Redis, Memcached, Cacti, Squid, puppet
  • Senior Lab Engineer

    2017 - 2018
    Optiva Inc.
    • Managed source control repositories Git, SVN, and Clearcase.
    • Managed CI/CD.
    • Managed telecom installations.
    • Scripted with Perl, Bash, and Python.
    • Maintained system and software on linux and solaris systems.
    Technologies: Linux, Git, SVN, Clearcase, Jenkins, Artifactory, Perl, Bash, AWS, Apache, Tomcat, Nginx, Telecom domain products
  • Senior Linux Systems Engineer

    2015 - 2016
    • Led Linux systems engineering.
    • Created Docker images and containers with Docker and Docker-compose.
    • Contributed to TDD with Ruby on Rails.
    • Managed company resources in AWS.
    Technologies: Linux, Docker, Docker-compose, Bacula, Ruby on Rails
  • Team Lead and Systems/Software Engineer

    2009 - 2010
    IBM Business Services
    • Developed IBM Tivoli Maximo java application.
    • Administered Oracle database.
    • Administered IBM Websphere.
    Technologies: IBM Tivoli Maximo, Oracle, Java, IBM Websphere
  • Senior Systems Engineer

    2004 - 2009
    Audatex Systems GmbH/Solera Inc. (Zurich, Switzerland)
    • Developed and deployed Java web applications.
    • Installed and maintained software on Oracle Application Server 10g.
    • Led Java web application performance tuning and capacity planning.
    • Created infrastructure for customer billing.
    • Installed and configured almost all industry standard software/tools on Linux systems.
    Technologies: Linux, Oracle, MySQL, Perl, Bash, Java, Apache, Jmeter, Load Runner
  • Web Application Developer

    2003 - 2004
    Innopark AG(Winthertur, Switzerland)
    • Wrote web application VIP.
    • Contributed to systems engineering.
    Technologies: Linux Suse, Apache, Cocoon, Java
  • Software Designer

    2000 - 2003
    724 Solutions, Inc. (Lenzburg, Switzerland)
    • Implemented Tomcat Gateway for a wireless internet server.
    • Implemented example use cases to customers.
    • Maintained and Improved software configuration utilities.
    • Implemented voice adapter component.
    • Converted proprietary iScript to JavaScript.
    • Ported, deployed and maintained software on linux, solaris, hp-ux, tru64 platforms.
    Technologies: C, C++, Java, Linux, tcl/tk, JavaScript
  • Research Engineer and Assistant

    1996 - 1999
    Computer Vision Research Lab-BUPAM
    • Studied in the area of Implicit Polynomials for Object Recognition.
    • Contributed to software engineering with C, C++, and Matlab.
    • Completed research in computer vision.
    Technologies: Implicit Polynomials, C, C++, Matlab


  • Languages

    Perl, Bash Script, PHP, C, C++, Java, Python
  • Tools

    Nginx, Jira, Apache JMeter, Monit, Apache, Apache Tomcat, Varnish, Squid Proxy Server, php-fpm, Docker Compose, ELK (Elastic Stack), AWS ELB, Ansible, Terraform, Git, Jenkins, Puppet, Apache Ambari, iptables, pfSense, Apache Airflow
  • Paradigms

  • Platforms

    Linux, CentOS, Ubuntu, Linux RHEL/CentOS, AWS EC2, Docker, Amazon Web Services (AWS), Oracle, Kubernetes, Solaris
  • Storage

    MySQL Server, MySQLi, MySQL/MariaDB, Memcached, Redis, VSFTPD, AWS RDS, AWS S3, HDFS, Elasticsearch
  • Other

    Bash Scripting, HAProxy, System Administration, AWS DevOps, GitOps, ProFTPD, Apache Cassandra, Ubuntu Server, IT Networking
  • Frameworks

    Ruby on Rails 4, Hadoop, Apache Spark
  • Libraries/APIs

    Nginx-rtmp, RADIUS


  • Master of Science degree in EECS
    1997 - 1999
    Bosphorus University - Istanbul, Turkey
  • Bachelor of Science degree in EECS
    1992 - 1996
    Bosphorus University - Istanbul, Turkey
  • Senior Site Reliability Engineer
    MAY 2019 - PRESENT
    An Online Freelance Agency
  • Courses in Systems and Technology Management
    ETH Zurich
  • LPIC1
    Linux Professional Institute
  • Various courses in IT
    Technische Berufsschule Zurich, Switzerland
  • Various courses in IT
    Universit├Ąt Bern
  • German Language Proficiency
    Language School in Wettingen Aarau Switzerland

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