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Resume

Senior security analyst in ERNW's cloud security team. Cloud and Kubernetes security, scenario-based red teaming, trainings.

Sebastian Funke, Heidelberg. Senior security analyst in ERNW’s cloud security team. I spend most of my time on cloud and Kubernetes security: reviewing cloud accounts and container platforms, running scenario-based red-team assessments, and working with large companies, several of them in the DAX 10. I rely heavily on AI agents to automate parts of my assessments. I studied computer science and IT security at TU Darmstadt and published research on IoT security and privacy along the way.

Cloud & container platforms

Public cloud

  • AWS
  • Azure
  • Google Cloud
  • Alibaba Cloud
  • IBM Cloud
  • … and more

Private & sovereign cloud

  • OpenStack
  • SAP Converged Cloud
  • Cloud Foundry
  • … and more

Kubernetes

  • EKS
  • AKS
  • GKE
  • OpenShift
  • Rancher
  • Gardener
  • Kubermatic KKP
  • SAP Kubernikus
  • … and more

Experience

  1. 2019–today Senior Security Analyst, Cloud Security Team ERNW Enno Rey Netzwerke GmbH · Heidelberg

    Security assessments and penetration tests of large enterprise environments, these days mostly cloud and Kubernetes. I'm part of ERNW's cloud security team and have reviewed a lot of cloud accounts and container platforms, for several DAX 10 companies among others. I've led scenario-based red-team assessments of cloud and container platforms and co-teach Offensive Kubernetes Security 101.

    • Senior Security Analyst since November 2026, before that security analyst and penetration tester.
    • Pentests of networks, desktop and web applications, containers and multi-cloud setups.
    • Led scenario-based red-team assessments of cloud and container platforms.
    • Research on automating assessments in Azure and Kubernetes and on improving our pentest techniques.
    • Heavy user of AI agents, mostly to build automations for my assessments.
    • Trainer at TROOPERS and HM Training Solutions (Offensive Kubernetes Security 101).

    Joined after a half-year career break, backpacking through South East Asia.

    ernw.de ↗

  2. 2017–2019 Junior Security Consultant (Penetration Tester) Context Information Security · Bad Nauheim

    21 months delivering security assurance services for some of the world's most successful organisations, as team member and occasionally as team lead: web applications and web services, external and internal networks, .NET and Java thick clients, CIS-aligned build and configuration reviews (Windows, *nix, Cisco IOS) and tightly scoped, legally compliant scenario-based attack simulations.

    contextis.com ↗

  3. 2015–2017 Student Research Assistant, R&D AGT International · Darmstadt

    Two years of research on privacy-enhancing technologies for Internet of Things applications; wrote my master's thesis here (an end-to-end privacy architecture for IoT).

    agtinternational.com ↗

  4. 2015–2015 Student Research Assistant, Secure Software Development Fraunhofer SIT · Darmstadt

    Three months improving a dashboard that visualises security issues of software projects.

    sit.fraunhofer.de ↗

  5. 2013–2014 Web Developer Kleewald GmbH · Frankfurt am Main

    Eleven months at a start-up building web applications for the finance and legal domains (PHP, HTML5, CSS3, jQuery, MySQL).

  6. 2013–2013 Software Engineering Intern TÜV Rheinland Taiwan · Taipei

    A 4.5-month internship between bachelor's and master's: automated RF test procedures with Agilent VEE and built a small Android marketing app.

    tuv.com ↗

  7. 2010–2013 IT Consultant Univativ GmbH · Darmstadt

    Alongside my studies: several small projects as IT consultant and web developer, e.g. for Merck KGaA.

    univativ.de ↗

  8. 2009–2010 IT Administrator Studierendenwerk Mainz · Mainz

    Four months between civil service and university: network expansion, hardware and software roll-outs, POS system maintenance.

    studierendenwerk-mainz.de ↗

Education

  1. 2013–2017 M.Sc. IT Security TU Darmstadt

    Master's programme in IT security. Thesis: an end-to-end privacy architecture for the Internet of Things (with AGT International).

  2. 2010–2013 B.Sc. Computer Science TU Darmstadt

    Graduated after six semesters. Thesis: a user study on visualising privacy-critical messages in online social networks.

  3. 2005–2008 Technical Assistant for Computer Science, Abitur Berufliches Gymnasium Mühlhausen

    Higher-education entrance qualification with majors in data processing and mathematics, plus the state-certified technical assistant qualification.

Skills

Offensive security

  • Cloud & Kubernetes pentesting
  • Container escape & isolation
  • Scenario-based red teaming
  • Web & API security
  • Network & infrastructure
  • Thick clients (.NET
  • Java)
  • Build & configuration reviews

Engineering

  • AI agents & agentic automation
  • Python
  • Bash
  • JavaScript
  • Linux
  • Git
  • kubectl & cloud CLIs

Research interests

  • Privacy-enhancing technologies
  • Multi-tenancy
  • Secure software development
  • Wireless physical-layer security
  • Decentralisation

Languages

  • German · native
  • English · fluent
  • French · basic
  • Chinese (Mandarin) · basic
Earlier skills

Languages & stacks

  • PHP
  • Java
  • Delphi/Pascal
  • C/C++/C#
  • MySQL
  • jQuery
  • HTML & CSS
  • Visual Basic
  • Prolog
  • Verilog/VHDL
  • IA-32 assembler

Tools

  • Joomla
  • WordPress
  • Contao
  • SVN
  • LaTeX
  • GIMP
  • SAP R/3

Methods

  • Scrum
  • RUP
  • XP
  • Design & architecture patterns

Publications · Teaching

A detailed CV in PDF is available on request.

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