Stefan Kubisa

Working Student IT Operations
DrSmile
May 2022 - Ongoing
  • Successfully orchestrated an international office network deployment, demonstrating strong negotiation skills while liaising with multiple parties over a period of 4 months. Responsibilities included contract negotiations, hardware procurement, overseeing the installation of fiber internet as well as network architecture and design. He implemented the network infrastructure using a strategic blend of Cisco Meraki and Ubiquity equipment.
  • Spearheaded the establishment of another fully functional network for an office environment, utilizing a combination of Cisco Meraki, Ubiquity, and TP-Link hardware.
  • Collaborated closely with developers of specialized medical equipment software, devising a customized deployment methodology using Microsoft Intune.
  • Remotely migrated users to mobile accounts, incorporating TOTP-based MFA within an automated and compliant device setup, completing the project within a tight timeline of 3 weeks.
  • Skillfully negotiated hardware orders, fostering a valuable partnership with a Lenovo supplier for the delivery of cloud managed, pre-autopiloted devices.
  • Introduced and modernized Atlassian tool utilization across several departments, optimizing collaboration and streamlining workflow processes.
  • Resolved various Google Workspace SMTP and group-related issues, utilizing troubleshooting expertise to ensure seamless operations.
  • Implemented the deployment of macOS and iOS apps, profiles, and certificates utilizing Jamf, enhancing device management efficiency.
  • Assumed responsibility for the headhunting and recruitment process, and demonstrated exceptional screening and interviewing skills, resulting in the successful selection and onboarding of highly qualified candidates.

Experience

Working Student IT Operations
SellerX GmbH, Berlin, Germany
January 2020 - May 2022
  • Enrolled devices into Autopilot in Azure Active Directory and Jamf MDM.
  • Managed devices in a domain using Microsoft Endpoint Manager and Intune.
  • Managed Users and Shared drives in Google Workspace.
  • Deployed Mobile Device Management profiles for Windows and macOS devices.
  • Administered a Ticket System in Jira and developed Automations for it.
  • Migrated email services from Google Workspace to Exchange Online using CloudM Migration Tool.
  • Developed and implemented a dynamic M365 group concept for department team and sharepoint sites.
  • Migrated Shared Drives to SharePoint using Avepoint Fly migration tool.
  • Developed a PowerShell script for managing mailboxes using the Exchange Online module.
Working Student IT
Enpal GmbH, Berlin, Germany
November 2020 - January 2022
  • Enrolled devices into Windows Active Directory and co-developed a Powershell script to automate the Account Creation Process using the AzureAD Module.
  • Managed devices in a domain using Microsoft Endpoint Manager and Intune.
  • Set up a Mobile Device Management for Windows, Android, macOS and iOS devices.
  • Set up a Ticket System in Jira.
  • Set up an Asset Management System in Snipe-IT.
  • Administered Ironscales, a Anti-Phishing Solution.
  • Administered and developed Filters and Subnets for the FortiGate Firewall.
  • Administered the Network Infrastructure using Ubiquity Software.
  • Built a Network Infrastructure using Cisco Meraki.
CTF Player
AG Rechnersicherheit, Berlin, Germany
June 2018 - Ongoing
  • Participated in CTF’s such as the RUCTF and the DEF-CON Qualifier.
  • Cooperated in a team of over 20 people.
  • Performed write-ups of services and their vulnerabilities.

Education

B.S. in Industrial Engineering
Technical University Berlin, Berlin, Germany
April 2015 - April 2022
  • October 2019 - March 2020 - research paper on "Standard Essential Patents"
  • April 2019 - August 2019 - Java/Spring project implementating a Web App
  • April 2018 - August 2018 - research paper on "Open Educational Resources"
With particular focus on following courses:
  • Algorithms and Data Structures
  • Computer Networks and Distributed Systems
  • Operations Research
  • Intellectual Property Management
  • Webtechnologies
  • Electronic Commerce
With the following projects:
  • Single Page Application
    • used technologies: HTML5, CSS3, JS, MongoDB, Bootstrap
  • Distributed Hash Table System
    • used technologies: C, BSD Sockets

Skills

Operating Systems and Tools
EntraID Intune Google Workspace Jamf Powershell bash Jira Confluence Windows Microsoft 365 Windows Configuration Designer Sharepoint Asana Linux WSL Git
Software Security
wireshark pwntools octoproxy Burp Ghidra
Programming
Python Java REST JavaScript

Languages

Polish
English
German

Interests

  • Bouldering
  • PC-Building