Chief Executive Officer
2022 - PRESENTKubedo GmbH- Created a company from scratch with ITSM and an inventory system. Hostbill, a CRM implemented with back-end services and product development.
- Developed MVP for cloud management services. Automation and back-end configurations implemented.
- Acquired new customers and implemented features. After the launch, we had eight paid customers.
Technologies: Django, Python 3, Ansible, Ansible Tower, VyOS, Terraform, Linux, IT Service Management (ITSM), Kubernetes, ITIL, Team Management, DevOps, Firewalls, Security, Infrastructure as Code (IaC), GitOps, OpenStack, Hypervisors, Docker, MySQL, Amazon Web Services (AWS), Cloud Computing, Architecture, Cloud, Continuous Deployment, HashiCorp, Ubuntu Linux, Proxy Servers, Python, VPN, Networking, Ubuntu, Back-end, IT Infrastructure, CephFounder
2020 - 2022Acik Kaynak Fikirler (AKF)- Created opensource courses for IT, including Linux, Docker, Kubernetes, Ansible, and Scripting.
- Built a community of around 8,000 subscribers and educated more than 10,000 people for the prepared hands-on laboratory courses.
- Developed a course environment on Play-with-Docker and online Docker in the Docker Linux console. Keycloak and the Docker-in-Docker environment were prepared from scratch.
Technologies: Education, Training, Content Creation, VyOS, Firewalls, Infrastructure as Code (IaC), Hypervisors, Docker, MySQL, Architecture, Cloud, Continuous Deployment, Ubuntu Linux, Python, Ubuntu, Back-endCloud Systems Architect
2017 - 2020unbelievable Machine- Provided %99.998 SLA to our customers within six months. Before my services, the SLA with the *um Cloud was around %98. During my management of it, SLA was stable.
- Migrated Spectre-meltdown of around 3,000 virtual machines from Xen to KVM. I developed a conversion script for Xen to KVM libvirt patch for hypervisors.
- Created Kubernetes best practices on KVM hypervisors.
Technologies: Ansible, KVM/Qemu, OnApp API, oVirt, Kubernetes, Xen, Citrix XenServer, VyOS, Team Management, Ansible Tower, DevOps, Firewalls, Security, Infrastructure as Code (IaC), OpenStack, Hypervisors, Docker, Elasticsearch, Amazon Web Services (AWS), Cloud Computing, Architecture, Cloud, Ubuntu Linux, Python, VPN, Networking, Ubuntu, IT InfrastructureChief Technical Officer and Co-founder
2014 - 2017Hundertserver- Created a DevOps-as-a-service product and a company that provides services around that. The company had grown from 4,000 MRR in 2014 to 120,000 MRR in 2017.
- Built the central hyper-converged system on XenServer. We used GlusterFS, DRBD, and Vyos routers on the hypervisors. I designed and implemented the systems, and my design managed more than 5,000 systems.
- Developed a fully managed backup system for our customers. I used Bacula and Bareos backup tools and puppet automation to deploy our solution.
- Created a ground-breaking hypervisor router environment. Each of our hypervisors had a Vyos virtual router. We scaled our infrastructure on three different continents and 10 different data centers.
- Implemented OpenVPN mesh network and scripted and integrated Vyos.
- Configured Mikrotik and Vyos for the customer Meinhotspot. Its 5,000 mini access points ended on our Vyos router and firewalls to reach the internet.
- Developed the Hundertserver HS+ product. I created an automation interface in Python for our product. Puppet and Scala frameworks were used for DevOps-as-a-service environment creation.
- Converted XenServer hypervisors to Proxmox environments. Licensing benefits on 200 servers.
- Implemented ITSM by adopting iTOP into service management. KPI and service desk analysis began to be used as metrics for the company.
- Introduced OKRs to the company, two cycles run before the leave.
Technologies: Puppetlabs, Ansible, Linux, Proxmox, XenServer, VyOS, MikroTik, MySQL, Elasticsearch, Checkmk, ITSM, IT Service Management (ITSM), Kubernetes, ITIL, Team Management, DevOps, Firewalls, Security, OpenStack, Hypervisors, Docker, Cloud Computing, Architecture, Training, Cloud, Ubuntu Linux, Squid Proxy Server, Proxy Servers, Squid, Python, VPN, Networking, Varnish, Ubuntu, IT InfrastructureTechnology Renewal and Technology Consultant
2013 - 2014KoçSistem- Led a datacenter migration project for an insurance company called Allianz. We migrated the 50-racks datacenter uninterrupted, including the legacy mainframes and Oracle Exadata. A €2 million budget project was done for €250,000.
- Acted as joint project manager for an insurance customer, BNP Paribas. Migrated their datacenter to another provider and managed Oracle, storage, and Network operations.
- Consulted on technology renewal and governance for a pharmaceutical wholesaler company. After the consulting, the company invested €20 million less for its five-year plan. The customer was using SAP with Oracle DB and had huge performance problems.
- Provided technology renewal and analysis consulting for a big retail company. We offered the company to use open-source alternatives on their enterprise technology stack. By consulting, they decided to use alternative databases to Oracle.
Technologies: SAP, Storage, Hypervisors, ITIL, Firewalls, Cloud Computing, Architecture, Training, Cloud, Proxy Servers, VPN, Networking, IT InfrastructureChief Technical Officer
2011 - 2013Tüm Eczac Kooperatifleri Birlii- Migrated legacy ERP system to SAP ERP system on a 2,000-employee organization.
- Used open source enterprise technologies for the technology stack, including Xen, Vyatta, and Mikrotik. TCO increased by %90.
- Managed 23 different city teams in coordination. Led technical involvement and deployment of the software in 50 branch offices.
- Mentored and led the use of open source technologies, including Linux, Xen, KVM hypervisors, Vyatta (Vyos), Bacula backup, Openvpn, l2tp, Postfix, Samba, MySQL, Nagios, and PostgreSQL.
Technologies: SAP, IT Project Management, ITIL, IT Service Management (ITSM), Oracle, ITSM, VyOS, Firewalls, Security, Hypervisors, MySQL, Architecture, Education, Squid Proxy Server, Proxy Servers, Squid, VPN, Networking, Ubuntu, IT InfrastructureChief Information Officer
2005 - 2011Farmalojistik A.S.- Implemented Oracle RAC for the company databases. Oracle 11g.
- Managed Postfix mail server and OpenBSD packet-filter firewall implementations.
- Wrote outbound integrations on Python and Bash scripts.
Technologies: Linux, ITSM, IT Project Management, Team Management, Oracle DBA, SAP Basis, Xen, Oracle PL/SQL, Oracle, IT Service Management (ITSM), ITIL, Amazon Web Services (AWS), VyOS, Firewalls, Hypervisors, MySQL, Architecture, Education, Squid Proxy Server, Proxy Servers, Squid, Python, VPN, Networking, Ubuntu, IT InfrastructureR&D Engineer
2004 - 2005POS- Led development and R&D of software for gas stations.
- Maintained software for Turkish Lira. A 6-digit reduce operation. All the statically configured values on the point-of-sale hardware were converted to use fewer digits.
- Managed R&D using Linux on POS software. Introduced OSS to the commercial use cases.
Technologies: Python 2, C#, Delphi, MSSQLCE, Oracle, Proxy Servers, IT Infrastructure