Sebastian Geißel in

Sebastian Geißel

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(Cloud) Security & Automation Architecture (Senior IT-Engineer) at ALDI DX
📍 Düsseldorf, North Rhine-Westphalia, Germany

Sebastian is a Senior IT Engineer at ALDI DX with over a decade of experience in security architecture. He specializes in designing and automating secure solutions for multi-cloud environments, leveraging his expertise in Infrastructure as Code, Terraform, and Python. He holds a Bachelor of Science and is a Certified AlgoSec Security Expert.

He is passionate about continuous learning and professional development, frequently attending industry events like Cisco Live. He enjoys deep technical sessions and hands-on labs, but also values connecting with the community and believes the best insights happen in conversations between talks.

Unique fact: Sebastian is a strong advocate for practical, hands-on learning, stating that "Hands-on time is the best time. "

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Experience
17 Years
Current Role
(Cloud) Security & Automation Architecture (Senior IT-Engineer)
Location
Düsseldorf, North Rhine-Westphalia, Germany
Personality Overview

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Priorities

Topics Sebastian cares about

Cloud Security Automation
His current role focuses on designing secure, scalable, and automated security solutions for on-premises and multi-cloud environments using IaC tools like Terraform and Python.
Network Security Architecture
His recent activity shows a deep interest in modern network defense, focusing on Next-Gen Firewalls (NGFW), Secure Access Service Edge (SASE), and AI-ready secure routers.
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Career

Work history

5-2022
(Cloud) Security & Automation Architecture (Senior IT-Engineer)
ALDI DX
5-2016 - 4-2022
(Cloud) Security Architecture (IT-Security Engineer)
Gothaer
7-2015 - 4-2016
IT Security Consultant
SECULONIA GmbH
1-2015 - 6-2015
Network Security Services Engineer
Metro Systems
12-2009 - 12-2014
System Engineer
Computacenter
In the press

Media appearances

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Education
2016 - 2018
Bacher of Science
FOM University of Applied Sciences for Economics and Management
2005 - 2008
staatl. geprüfter Informationstechnischer Assistent
b.i.b. International College
Social presence
in
Behavioral profile

DISC profile (public)

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