Sandor Kosztka

Cloud Architect in Budapest, Hungary

Experience

Cloud Architect @ Deutsche Telekom It Solutions (Jan 2025 - present)

Cloud Services

Technologies: Terraform, Terragrunt, Amazon Web Services, Linux

Cloud Architect @ TC2 (Oct 2023 - Dec 2024)

Consultancy team

As a member of the consultancy team, I act as a bridge between the operations team and the customer. My responsibilities include conducting regular cost and security reviews of customer AWS environments, and I frequently create and present these reviews. Additionally, I schedule and plan operations and development tasks, and I actively participate in the delivery process using Terraform / Terragrunt.
I also serve as a subject matter expert for backup solutions, particularly for creating AWS Backup-based solutions for various AWS resource and SAP database backups.

Technologies: Terraform, Amazon Web Services, Veeam, Linux

Cloud Architect @ Invitech (Jan 2020 - Sep 2023)

Enterprise Solutions - Cloud

Tested and deployed a new KVM solution for our datacenter services
Providing thought leadership for overall AWS architecture, testing and deployment
Training colleagues on the fundamentals of containerization and Kubernetes
Supporting Veeam deals and solutions on TDA level
Building a new Kubernetes product
Creating short lightboard videos explaining our solutions technological concepts on a high level

Technologies used: Veeam, AWS, Ansible, Kubernetes

Cloud Specialist @ British Telecom (May 2019 - Jan 2020)

Cloud Managed Services

I was a subject matter expert for cloud product development
Developed automation and design for our Alibaba cloud offering product launch.
Contributed to the development of the SSO for the multi cloud solution.
(With Python, Terraform and Resource Orchestration Service /ROS/ templates)
Configured Cloudyn reports (for MS Azure Billing and AWS)

Technologies used: Alibaba Cloud, MS Azure, AWS, Cloudyn, SAML

Solution Consultant @ Vodafone (Jan 2017 - Apr 2019)

Cloud & Security Services

Translated complex customer requirements into feasible technical solution in form of high-level designs.
Reviewed customers’ current infrastructure and proposed modernization or upgrade opportunities.
Enabled sales by providing design and indicative prices.
Created and managed proof of concept environments for customers on dedicated private cloud product.
Tested and provided feedback for the product development teams.
Held workshops and demos about different cloud solutions and automation.

Technologies used: Alibaba Cloud, AWS, Python, Ansible, Terraform, Docker

Linux Engineer @ IT Services Hungary (Oct 2012 - Jan 2017)

Solutions & Projects

Supported multiple projects by managing their VMware environments and Linux systems also supporting Docker.
Worked closely with the development teams, fulfilling their infrastructure requirements.
Built a monitoring system for the Docker container environment using Nagios and custom bash scripts. Started automating tasks with Ansible.

Technologies used: VMware, Linux, Docker, Nagios

Network Administrator @ IT Services Hungary
Internal IT
Maintained the user plane equipment - configured access ports, VoIP phone ports, spec patches, wireless Access Points (Prime mgmt & WLC).
Continued to carry out selected sysadmin activities based on expertise. Started to support projects.

Technologies used: VMware, Linux, Cisco iOS, Avaya phones

Sysadmin trainee @ IT Services Hungary
Internal IT

Managed the centralized HP Printing system, AD and DNS services
Participated in the VMware vSphere system administration
Administered our Corporate File Share – DFS
Created a Release Management process for our team
Participated in the monthly patching of Windows servers (win2008R2, win2012)

Technologies used: VMware, Linux, Windows, Nagios, DFS, AD

On The Side

Mentor @ Flow Academy (Jan 2022 - Present)
Mentoring in the fundamentals of Ansible and public clouds (AWS)
Creating course materials, excercises and holding lectures online
Creating and grading exams

Research Assistant @ Budapest University of Technology and Economics (Feb 2022 - June 2022)
Consulting on the Training Project Laboratory course for the semester
Planned exercises in Docker and Kubernetes
Rated the course final papers

Certifications

AWS Certified: Solutions Architect – Professional
AWS Certified: Solutions Architect – Associate
AWS Certified: SAP on AWS - Specialty
Veeam Certified Engineer 2024 (VMCE 2024) v12.1
Alibaba Cloud Certified Professional - ACP - Cloud Computing
Electrician - National Register of Vocational Qualifications - 2022

AWS_SAP AWS_PAS AWS_SAA VMCE ACP

Awards

Alibaba Cloud MVP 2018 / 2019 / 2020

Languages

Hungarian: Native
English: Full professional proficiency

Education

Bachelor of Profession, Computer Science
Budapest University of Technology and Economics - 2023
Major in Testing and Operation

Bachelor of Science, Computer Engineering
Budapest University of Technology and Economics