Burp Suite Experts in Germany

I implemented a Zero-Trust architecture for robust, military-grade maritime container mini data centers based on VMware & Tanzu to support containerized GIS workloads for ground forces. The main focus was on securing communications, workload protection, and data access in contested electronic battle environments affected by jamming, interception, signal manipulation, and constantly changing operational conditions. I designed and architected use cases so that every element of workload, identity, and system could continue to operate independently and securely even in degraded or disrupted scenarios. In parallel, I defined the enterprise and solution security architecture with LeanIX, Bizzdesign, and HOPEX as enterprise architecture, repository, and governance platforms to maintain architecture inventory, relationships, traceability, target pictures, and security governance in complex environments. For the architectural designs, I used Sparx Enterprise Architect to describe formal architecture views, interfaces, trust boundaries, and system architecture in both IT and OT environments. IriusRisk was used for threat modeling of the solution to identify architecture-driven risks, derive security requirements, and detect countermeasures and design gaps directly from the solution models. Risk and compliance management was supported with Archer. Architecture decisions, control gaps, and operational risks were translated into controlled governance and auditable compliance measures. For documentation, collaboration, and visual design, I used Confluence to maintain Architecture Decision Records, Security Blueprints, and workflows. I used Lucidchart and draw.io to create design artifacts tailored to stakeholders. I also defined OT security concepts with support from electrical and mechanical engineers in the areas of oil, vehicle onboard systems, rail, power plants, pharma, gas turbines, and nuclear technology. I created the end-to-end OT security strategy, starting with global policy, developed into standards and procedures, and finally aligned with Bell-LaPadula, Purdue Model, SABSA, TOGAF ADM, CENELEC 50701, IEC 62443, and NIST standards. In addition, I worked with engineering team leads to identify critical KBP assets and place them under protective measures that segmented SCADA, PLC, and HMI assets. I drove collaboration between Security, IT, and OT teams to create standardized workflows and use cases for the OT security solution catalog, while integrating Defense-in-Depth and Zero-Trust principles into operational environments. A key part of my work was integrating multidisciplinary engineering, security, and operations stakeholders into a unified security blueprinting strategy and ensuring that architecture, threat modeling, governance, and documentation were technically strong and operationally practical.

• Completed 25+ hands-on labs focusing on digital forensics, incident response, and advanced threat hunting techniques.
• Earned top-tier badges in malware analysis, enterprise log analysis, and threat intelligence gathering.
• Developed specialised skills in forensic report writing and evidence collection methodologies to support incident investigations.

• Pioneered first enterprise AI-SAP integration at ALDI SÜD, deploying AI-driven automation within one of retail's largest SAP S/4HANA programs, eliminating 50% of manual pre-cycle validation time and establishing replicable automation framework across 11 countries
• Led end-to-end SAP project lifecycle management for implementations across SAP S/4HANA and Manhattan Systems, supporting 7,300+ ALDI SÜD locations globally across Europe and Australia
• Served as primary executive liaison to C-level stakeholders across 11 countries for strategic SAP transformation programs
• Orchestrated automation, performance, and volume testing for critical releases, maintaining 99.9% system SLA compliance during peak retail periods
• Managed cross-functional international teams of 15+ specialists, delivering projects 20% faster than industry benchmarks
• Standardized SAP processes across 11 countries as part of one of retail's largest SAP implementations
• Directly managed €2M budget with 98% allocation accuracy across 12 concurrent projects
• Reduced SAP S/4HANA migration costs by 18% through strategic vendor contract renegotiations and optimization

• Performed security assessments and penetration testing on Microsoft AI models for text, image, and video generation.
• Conducted prompt injection attacks through diverse input vectors, including crafted text, steganographic images, and manipulated visual elements (e.g., varying opacity and embedded content).

• Consulting on an ongoing IT security architecture project
• Documenting past progress and planning next steps
• Applying and implementing the BSI IT baseline protection
• Building and maintaining security management systems
• Applying the ISO 27001 standard series
• Integrating ITIL processes into security architectures
• Collaborating with public clients, regulatory authorities and internal and external service providers

• Planned and executed black-box adversarial testing of traffic-sign computer-vision pipelines; produced a threat model and attack-surface analysis for safety-critical scenarios
• Built a programmable hardware proof of concept using a holographic POV fan and a repeatable test harness to run real-time experiments and collect evidence for vulnerability assessment
• Quantified misclassification across lighting, distance, and angle, achieving up to 90% untargeted misclassification; delivered steps to reproduce, PoCs, and prioritized mitigations, and documented limitations and residual risk

• Developed a custom tool using the Mistral 7B LLM to scan, validate and report security vulnerabilities.
• Security tested AI agents, bots, and other LLMs with a focus on prompt injection, model inversion, data poisoning, EDR/AV bypass and evasion techniques, membership inference, model evasion, overfitting to malicious inputs and contextual manipulation.
• Onboarded repositories to SAST solutions for security scanning, implemented secrets scanning, DAST, SCA, and utilized ZAP for DAST in CI/CD pipelines.
• Engaged in security awareness trainings, developed CTF challenges and training materials to enhance developer security knowledge.
• Planned and executed bi-annual red teaming operations based on the MITRE ATT&CK framework and led internal and external pentests based on the OWASP Top 10 framework for 70+ applications worldwide, resulting in detection, reporting, and remediation of hundreds of vulnerabilities.
• Triaged HackerOne reports.

• SD-WAN solution by Aruba – Swiss energy company (330 sites): design and implementation of an SD-WAN branch solution with Aruba 9004 gateways, encrypted overlay, policy-based routing, WAN load balancing, and centralized management via Aruba Central.
• LAN/WLAN & security – schools in Germany (9 sites): deployment of Aruba switches & AP-505, FortiGate 80F firewalls; setup of Checkmk monitoring, incident and change management, and secure admin access (BeyondTrust).
• Multi-site security – energy billing company (20 sites): deployment of a complete Fortinet solution (FortiGate HA cluster, FortiSwitch PoE, FortiAP), IPsec remote-access VPN via FortiClient, centralized management via FortiCloud, IntraID authentication, operations and incident management.
• Data center migration – German client: migration of data center switches (Mellanox), firewall cluster, and OfficeConnect switches to a new data center; securing configurations, implementing HA designs, testing, monitoring, and coordinated change and incident processes. Setup of two new 6300 M VSX clustered switches.
• Data center security – university hospital: implementation of a high-availability FortiGate 400F firewall cluster across three data centers; security policy design, operational support, and change/incident management.
• Enterprise campus & network access control – manufacturing company in Germany: introduction of Aruba ClearPass NAC, setup of a VSX-based switching architecture, secure WLAN access with MPSK, and integration into existing networks.
• EU client (Germany & Poland) – Sophos firewalls: operations, incident and change management of Sophos firewalls including IPsec VPN; troubleshooting and ongoing optimization of security configurations.
• Network modernization – pharmacy client in Germany: design and rollout of core and access switching (Mellanox, Aruba Instant On), migration from Sophos to Fortinet firewalls, network segmentation, and security hardening.

• Developed Red Team infrastructure for real-world attack simulations using Sliver C2 and custom tools
• Executed advanced Red Team operations, integrating AI/LLM security research for prompt injection attacks
• Conducted comprehensive breach assessment attacks and vulnerability assessments across enterprise infrastructure
• Performed root cause analysis and purple team exercises, generating executive-level reports
• Lead LLM red teaming initiatives to improve AI model security for GPT-4, Mistral, and internal GenAI models

• Pentesting of mobile applications
• Code review
• Gematik audit
• Development of secure software development methods
• Creation of security and test concepts
• Penetration testing of software and architecture
• Vulnerability analysis
• Automation and information security
• Use of Confluence and Jira
• Working with databases, J2EE, JavaServer Faces, Liquibase, Apache, Maven, Mercurial, Oracle Financials
• Documentation and creation of security policies
• Management of software systems, SharePoint, PrimeFaces, Git
• Compliance with security regulations and .NET, AWS, API
• Tools: MobSF, Frida, Android Studio, Drozer, Objection, Azure

• Risk Management
• Incident Management
• Security Analysis
• Secure Coding
• Information Security Management System (ISMS)

• Operational management of the company: building teams and infrastructure, developing products, analysis and implementation of IT security measures

• Project assignments in the IT security environment focusing on establishing blue teaming activities (defensive processes and technologies) to defend against cyber attacks

• Conducting red teaming processes, including penetration tests and security analyses for companies

• Consulting on setting up Security Operation Centers and implementing SIEM systems, and building Computer Incident Response Teams (CSIRT)

• Auditor for ISO 9001 and ISO 27001, § 8a, ISO 27019, § 11 1a EnWG, TISAX

• Advising companies in critical infrastructures on information security and compliance with the IT Security Act

• Building SIEM/SOC processes and SOC analyst work (Splunk, ELK-Stack)

• Integrating data into monitoring tools (Prometheus, Grafana)

• Consulting on BSI IT baseline protection, ISO 9001, ISO 27001, BCM, ITIL and risk management

• Security assessments and penetration testing of IT and network architectures

• Creation of test concepts
• Requirements management
• Release planning & support
• Leading DDS
• Reporting (test report, AFO test matrix)
• UAT/BAT coordination
• Onboarding new team members
• Team planning / capacity planning
• Documentation support
• Methods/tools/technologies: black box, white box, exploratory testing, end-to-end testing, regression testing, load & performance testing, acceptance and interface testing, integration and system testing, networking, JIRA with Zephyr Scale plugin, Confluence, RISE portal, Ethernet, IPv4, IPv6, Linux, VM, Postman, SQL, SQL Developer, Bruno, Wireshark, cloud, Burp Suite, Notepad++