Stanislaus Stelle
Security Consultant
Experience
Dec 2023 - Present
1 year 7 monthsSecurity Consultant
Star Labs GmbH
- Security Consultant at Rohde & Schwarz AG.
- Work on FPGA enhanced network encryption device with secure boot, TPM2.0 and smart card integration for BSI approved usage with Post Quantum Cryptography.
- Linux driver development and audits.
- Collaboration with GitLab, Gerrit, Confluence and Jira.
- C, C++, Secure Boot.
Jan 2022 - Dec 2023
1 yearSecurity Consultant
Star Labs GmbH
- Security Consultant at Miele & Cie. KG.
- Analysis and review of existing processes.
- Threat Modeling of processes.
- Threat Analysis and correction measures.
- Design, implement and rollout PKI.
- Secure Boot, Bluetooth LE.
Dec 2022 - Jan 2023
2 monthsSecurity Consultant
Star Labs GmbH
- Security Consultant at SICK AG.
- Analysis and review of existing code.
- Present plan to update architecture to state of the art security mechanics.
- C, C++, Secure Boot.
Jan 2021 - Nov 2022
11 monthsSecurity Consultant
Star Labs GmbH
- Security Consultant at Telekom AG.
- Security analysis of white labeled and Yocto based router software based on RDK.
- Secure Boot on Broadcom Chipsets based on Broadcom SDK.
- Code Review and Reporting to management.
- Planning and Implementation of automated Security Tests in Gitlab.
- PKI Handling with HSMs and PKCS#11.
- C, C++, Yocto, Secure Boot.
Aug 2021 - Dec 2021
5 monthsSecurity Consultant and C++ Developer
Star Labs GmbH
- At IBM GmbH.
- Microservice development in C++ for „elektronische Patientenakte“ by Gematik.
- Kubernetes deployments.
- Security based development to fulfill Gematik requirements.
- low level openssl development.
- utimaco HSM handling.
- C, C++, Kubernetes, Docker.
May 2021 - Dec 2021
8 monthsSecurity Consultant
Star Labs GmbH
- Security Consultant at Erweka GmbH.
- Operating System port from Ubuntu to Yocto.
- Secure Boot on iMX8MM.
- Penetration Testing of Secure Boot.
- PKI Setup.
- C, C++, Yocto, Secure Boot.
May 2021 - Jul 2021
3 monthsC++ Developer
Star Labs GmbH
- At Rohde & Schwarz GmbH.
- Microservices for Docker Cluster.
- High throughput Kafka Setup.
- Distributed Systems.
- C, C++, conan, Kafka.
Jan 2020 - Mar 2021
3 monthsSecurity Consultant
Star Labs GmbH
- Security Consultant at Resado GmbH.
- HSM development based on Yocto.
- Development of update strategies for high security embedded devices.
- Penetration Test planning for FIPS certification.
- C, C++, Yocto, Bitbake and Bash.
Aug 2019 - Present
5 years 11 months Monheim am Rhein, Germany
Co-Founder
Star Labs GmbH
Jul 2017 - Mar 2021
3 years 9 monthsSecurity Consultant
Star Labs GmbH
- Security Consultant at Telekom AG.
- Security Lead and development support for the Smart Speaker.
- SoC analysis and vulnerability research.
- Planning and Setup of HSM based PKI (ncipher).
- Documentation of processes.
- Design and implementation of Secure Boot chain.
- Design of Linux access control and enforcement of Separation of concerns.
- Code Reviews in international Teams.
- Amazon Alexa Device Certification security compliance.
- Coordination, planning and review of OEM deliveries.
- Hardware security integration of the CAAM from NXP.
- C, C++, Python, Ghidra, Yocto, Bitbake and Bash.
Apr 2015 - Sep 2016
1 year 6 monthsLead Mobile Developer and Security Consultant
Stelle-Beratung
- At Seal One AG.
- Planned, designed and implemented the Seal One apps for Android and iOS.
- Designed the Bluetooth Low Energy protocol for fast data transmission in use.
- Analyzed Bluetooth Low Energy traffic to determine proper functionality on low level.
- Microcontroller development on secure tokens.
- IDA Pro, C, Java, ObjC, HTML and Javascript.
Apr 2014 - Mar 2015
1 yearLead Mobile Developer and Security Consultant
Stelle-Beratung
- At nextmarkets GmbH.
- Consulting and training on security matters regarding real time data communication.
- Implementing and hardening of the nextmarkets mobile app for Android and iOS.
- Consulting on the infrastructure in place and performing penetration tests.
- Java, ObjC, HTML and Javascript.
Apr 2014 - Mar 2015
1 yearLead Mobile Developer and Security Consultant
Stelle-Beratung
- At stapp GmbH.
- Prototyped and implemented a fashion and lifestyle app for Android and iOS.
- Consulting on the infrastructure in place and performing penetration tests.
- Java, ObjC, HTML and Javascript.
Sep 2013 - Dec 2014
4 monthsLead Android Developer and Security Consultant
Stelle-Beratung
- At Seal One AG.
- Consulting on secure protocols for authorization.
- Hardening for a variety of brands.
- Development of the Best Sign Android component for Postbank.
- Java.
Mar 2013 - Sep 2019
6 years 7 monthsFreelancer
Stelle-Beratung
Mar 2013 - Mar 2014
1 year 1 monthLead Android Developer
Stelle-Beratung
- At Telekom AG.
- Implementing features and resolving bugs for the Tolino eReader.
- Maintaining a white label solution for 7 partners on the Google Play store.
- Integrating and upstreaming of the readium sdk.
- Coordinating and leading a near shore team in romania.
- C++ and Java.
May 2012 - Jan 2013
9 months Darmstadt, Germany
Working Student
CASED
- Master Thesis: Developed CrowdApp an Android application for multi hop tethering based on the Batman mesh protocol.
- Operated an Android smartphone on promiscuous mode and forwarded TCP packets based on digital signatures.
- Designed and implemented an anonymous multi hop tethering community platform which can be traced in case of misuse.
- Published CrowdApp - Secure Mobile Ad-Hoc Resource Sharing on Android: Sharing Internet connections mobile with multi hop technology.
- C, Bash and Java.
Feb 2012 - Apr 2012
3 months Darmstadt, Germany
Working Student
CASED
- Android OS Penetration Testing.
- Broadcom Linux driver analysis.
- mdk3 toolkit extension for IEEE 802.11 management frame injection.
- C.
Oct 2010 - Jan 2012
1 year 4 months Darmstadt, Germany
Working Student
CASED
- Development of a symmetric key material deployment tool for the contiki operating system.
- Planning, designing and implementing of a Java based GUI for symmetric key generation.
- ZigBee and Wifi communication implementation on low power IoT devices.
- Presenting the findings and research results at ARES 2012.
- C and Java.
Mar 2010 - May 2010
3 months Germany
Working Student
SAP AG
- Bachelor Thesis: Concept, analysis and development of UI/UX operations.
- Invent and prototype a new Drag&Drop concept for group activities on wall sized displays.
- Perform A/B testing with leading interaction paradigms and own prototype as well as scientific evaluation of findings.
- C#.
Jun 2009 - Sep 2009
4 months Germany
Working Student
SAP AG
- Research Internship with EU Research Project Texo.
- Fraud assurance in service oriented business applications.
- Contributions to the TEXO Research project Maestro.
- Users can composite business workflows in a GUI and my contribution to the project guaranteed segregation of duty for the participating entities. Four eye principle in sensitive tasks.
- Java.
Jan 2009 - Mar 2009
3 months Germany
Working Student
SAP AG
- Research Internship with Linux Lab.
- Network Monitoring with Nagios 3.
- Aggregating server information with phpEquimon to easify administration.
- Development of the open source Nagios SAP CCMS plugin.
- C, Bash, XML and PHP.
Aug 2008 - Sep 2008
2 months Germany
Working Student
SAP AG
- Research Internship with Defense.
- Analysis and Prototyping of Joint Common Operational Picture for the NATO.
- Close cooperation with NATO‘s NC3O Research facility.
- Aggregating data from SOAP based web services.
- Java, ABAP and SOA paradigm.
Oct 2007 - Dec 2008
3 months Germany
Working Student
SAP AG
- Research Internship with Deployment.
- Writing tests for J2EE based automated SAP ERP deployment server.
- Extending functionality and optimizing hotspots.
- J2EE and Perforce.
Summary
Before finishing his studies, Mr Stelle was involved in numerous international client projects while working for SAP. He was working as an IT freelancer since 2013, refining his expertise in a broad field ranging from mobile development, protocol design, hardening schemes for IoT devices and servers alike and client development work. All the while covering either the role of a Security Architect, Technical Lead, System Architect or Lead Developer. Clients trust him to finish the job while using up to date technologies and methodologies and coordinating work with internal and external work forces.
Languages
German
Native
Russian
Native
English
Advanced
French
Elementary
Education
Oct 2010 - Jun 2013
TU Darmstadt
M.Sc., IT Security · Darmstadt, Germany
Oct 2007 - Jun 2010
DHBW Karlsruhe
B.Sc., Applied IT · Karlsruhe, Germany
Certifications & licenses
CEH
CISSP
Machine Learning
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