Mustafa Kubilay Yalniz
Verified Expert in Engineering
Linux Developer
Istanbul, Turkey
Toptal member since April 3, 2019
Mustafa has more than 20 years of experience in systems and software deployed on Linux platforms. He has extensive experience in scripting/coding, both as a systems and software engineer. He has solid skills in DevOps, SRE, back-end, and Linux systems engineering.
Portfolio
Experience
- Linux - 20 years
- CI/CD Pipelines - 10 years
- DevOps - 8 years
- Python - 6 years
- Site Reliability - 5 years
- Amazon Elastic Container Registry (ECR) - 5 years
- Amazon Web Services (AWS) - 5 years
- AWS DevOps - 1 year
Work Experience
DevOps and AWS Expert
Golden Hearts Gaming, Inc.
- Achieved the cross-cloud replication from Amazon RDS PostgreSQL to GCP BigQuery using Datastream.
- Created Terraform and then AWS CloudFormation templates for test and prod env provisioning.
- Developed various Django back-end features, including payment systems.
Senior DevOps Engineer
Spin
- Created provisioning of Sandbox and external environments with Python, Bash, Terraform, Helm, Helmfile, Rails. The whole environment operations are managed with infrastructure pipelines.
- Did release management with GitHub actions and JavaScript. Interacted with GitHub, Jira, and Slack while executing workflows.
- Worked on various assignments including Datadog, TeamCity, Python, Kubernetes, Bash, Sentry, Helmfile, and Helm.
Site Reliability Engineer
BrokerBuddha
- Provisioned whole AWS environments with Terraform scripts including all aspects of networking and security.
- Used AWS resources including AWS Autoscaling, AWS ECS, AWS Fargate, IAM, RDS, Elasticache, and Elasticsearch in deployments.
- Implemented pipelines in circleci for infrastructure deployments.
Senior DevOps Engineer
bcheck
- 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.
- Set up Apache Airflow jobs to cleanup logs.
- Managed AWS Resources.
Senior Site Reliability Engineer
Aurea
- 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.
Senior SaaSOps Chief Architect
Aurea
- 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.
Senior Systems Engineer for Web Applications
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.
Senior Lab Engineer
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.
Senior Linux Systems Engineer
Freelance
- 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.
Team Lead and Systems/Software Engineer
IBM Business Services
- Developed IBM Tivoli Maximo java application.
- Administered Oracle database.
- Administered IBM Websphere.
Senior Systems Engineer
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.
Web Application Developer
Innopark AG(Winthertur, Switzerland)
- Wrote web application VIP.
- Contributed to systems engineering.
Software Designer
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.
Research Engineer and Assistant
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.
Project History
Sandbox and Production Line External Environments with Python and Terraform
GitHub Workflows with JavaScript and GitHub Action
The release train has been implemented to create and manipulate branches and pull requests and merge them properly. The JavaScript also manipulates Jira issues or creates and transitions them.
Education
Master of Science Degree in EECS
Bosphorus University - Istanbul, Turkey
Bachelor of Science Degree in EECS
Bosphorus University - Istanbul, Turkey
Certifications
HashiCorp Certified: Terraform Associate (002)
HashiCorp
AWS Certified SysOps Administrator - Associate
Amazon Web Services (AWS)
Senior Site Reliability Engineer Bootcamp
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
Universität Bern
German Language Proficiency
Language School in Wettingen Aarau Switzerland
Skills
Libraries/APIs
Nginx-rtmp, RADIUS, Node.js
Tools
NGINX, Jira, Apache JMeter, Terraform, Git, Monit, Amazon Elastic Container Service (ECS), AWS Fargate, AWS IAM, Amazon Elastic Container Registry (ECR), GitHub, Amazon Virtual Private Cloud (VPC), AWS CloudFormation, Apache, Apache Tomcat, Varnish, Squid Proxy Server, PHP-FPM, Ansible, Docker Compose, ELK (Elastic Stack), MATLAB, IBM Tivoli, Squid, IBM Rational ClearCase, Artifactory, VMware, Amazon ElastiCache, AWS ELB, Jenkins, Iptables, Helm, TeamCity, Helmfile, GitLab CI/CD
Languages
Bash, Perl, Python, Bash Script, Python 3, SQL, JavaScript, Ruby, PHP, C, C++, Java
Frameworks
Django, Ruby on Rails 4, NestJS
Paradigms
DevOps, Continuous Integration (CI), Continuous Delivery (CD)
Platforms
Linux, Amazon EC2, Docker, CentOS, Ubuntu, Linux RHEL/CentOS, Amazon Web Services (AWS), AWS ALB, Red Hat Linux, Oracle, Kubernetes, Solaris, AWS Elastic Beanstalk, AWS NLB
Storage
MySQL Server, MySQLi, MySQL/MariaDB, Memcached, MySQL, Amazon Aurora, Redis, Amazon S3 (AWS S3), NoSQL, PostgreSQL, Amazon EFS, Cassandra, VSFTPD, Elasticsearch, Amazon DynamoDB, Redis Cache, PostgreSQL 10
Other
Networking, Relational Database Services (RDS), Identity & Access Management (IAM), HAProxy, Ubuntu Server, System Administration, Autoscaling, Linux Server Administration, Amazon RDS, GitHub Actions, Debugging Tools, Disaster Recovery (DR), Middleware, Configuration Management, Software Development Lifecycle (SDLC), Infrastructure as Code (IaC), Site Reliability, CI/CD Pipelines, AWS DevOps, GitOps, Site Reliability Engineering (SRE), SDDC, Security, ProFTPD, Apache Cassandra, IT Networking, Autoscaling Groups, AWS CodePipeline, Disaster Recovery Plans (DRP)
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