References

Upstanding Hackers, Inc.

Upstanding Hackers, Inc. is a software research and development agency. We are international experts in digital security with a focus on language security, or LangSec. We are a virtual company, with employees, partners and agents in Europe and North America. We develop our own security software tools as well as perform R&D for third parties.

Open source implementation of a security-oriented parser for the industrial control protocol DNP3 (C)

http://github.com/pesco/dnp3/

Extensive work on the "Hammer" open source library for parser generation (C); sponsored within the DARPA "Cyber Fast Track" program

http://github.com/upstandinghackers/hammer/

Implementation of multiple efficient backends for different classes of formal languages: LL(k), LALR, GLR
Design and implementation of a grammar-oriented API for parser specification
Preparation of examples (base64, DNS)
Extensions of functionality through new parser combinators
Implementation of automatic tests and bug fixes

Sbeih IT

For us, reasonable risk management means producing an economically sensible security level and thus achieving an optimal ratio between costs and benefits of your IT institutions. [translated]

Freelance security consulting

Preparing presentations about IT security in businesses
Analysis of company networks and development of recommended actions

PRESENSE Technologies GmbH

PRESENSE Technologies, founded in 2009, offers to its customers services and products in the area of IT security. That includes consulting (security concepts, penetration tests, security-oriented design consulting, risk analyses) and the development of custom software. [translated]

Leading development of software components for a kiosk application (Ruby)

Integration of multiple commercial third-party products
Design and architecture for the handling of workflows and user interaction
Realization of user interfaces according to customer request

Implementation of a program for automatic maintenance of rule sets for the snort network IDS (Ruby)

FinQ UG (haftungsbeschränkt)

As an independent advice portal we would like to bring transparency and trust into the jungle of finance, therefore connecting customers and experts. [translated]

Implementation of a custom tool for controlling deployment and maintenance processes of a web application (Tcl)

BitlBee
Open-Source Instant-Messaging-Client

BitlBee brings IM (instant messaging) to IRC clients. It's a great solution for people who have an IRC client running all the time and don't want to run an additional client.

Integration of the OTR encryption system for instant messaging (C)

Work under private contract

Helmut-Schmidt University
Theoretical Electrical Engineering Group

Worked on a software for the simulation of electro-magnetic fields (C++)

Implementation of multi-processor parallelism (OpenMP)
Maintenance of the code-base and general support
Setup of the distributed development environment (SVN)

Universität Hamburg
AI Lab

Worked on an expert system for knowledge-based configuration of product families

Implementation of a non-trivial converter for the associated knowledge bases (Haskell)
General code maintenance, bug fixing (Lisp)
Investigation of possible presentations based on modern graph layout algorithms (Lisp)