Andreas Mehner

DupEx – Duplicate Exterminator

2026 – present

High-performance Linux tool for safely finding and removing duplicate files. A multi-stage funnel algorithm (size grouping, sample hash, pairwise sampling, full BLAKE3 hash) reads only as much data as necessary and scales across all CPU cores (OpenMP, AVX2/SSE4.1 SIMD). A full BLAKE3 hash identifies duplicates; an optional byte-for-byte comparison confirms every group bit by bit. With a GTK4 interface, reference/protected folders and keep-protection rules.

Integration of crypto games into Telegram Web Apps

Oct. 2024 – Dec. 2024

Integration of crypto games into Telegram Web Apps.

Portfolio website

Sep. 2024 (2 weeks)

Website presenting my portfolio, projects, skills, professional development and contact details.

Design of an ordering software for restaurants

Aug. 2023 (2 weeks)

Design of an ordering software for restaurants.

cadis® TMS: software suite for logistics companies

2009 - 2022 (>13 years)

Further development of a software product within a large development team. Implementation and configuration of project-specific customizations. Operational processes: pickup, loading, unloading, delivery, yard management, departure control. Temperature monitoring. Creation of print templates for process documentation.

Sports club website

2012 - 2022 (10 years)

2012: Design and creation of a website for a Munich karate club based on Joomla. 2016: Migration of the site to WordPress. The site was maintained from 2012 to 2022.

Remote control for PCs using a mobile device

2004 (3 months)

Independent development of a remote control as a research project, based on a mobile device for controlling PCs. Swipe gestures on the mobile device are transferred to the mouse cursor of the controlled PC. Features: full mouse and keyboard control, executing key combinations, quick launch of programs, control of Windows and Linux computers, fast and intuitive switching between up to 4 defined computers — manually or automatically when 'leaving' the screen edge with the mouse — copy/paste of text, file transfer via the mobile device to the target computer, and data encryption with TripleDES.

FREELANCER / Software Development / IT Consulting - EAST-WEST IT Solutions

Founded the IT agency EAST-WEST IT Solutions in Serbia. Various software and web development projects. IT consulting.

Project Engineer, Software Developer - Kratzer Automation AG / CADIS GmbH

Software development in operational logistics. Implementation of user interfaces. Definition and implementation of interfaces for integration with other modules. Conducting code reviews and debugging to ensure software quality. Creation of comprehensive software tests to thoroughly verify software functions. Creation of print templates for generating PDF documents and reports. Management of translation files for ~15 languages using a global translation database.

IT Consultant - syracom AG

Software development for a large German bank. Development of an internal web application for options trading. Creation of a prototype for a careers website.

Working Student - secunet Security Networks

Conducting an IT threat analysis and identifying countermeasures. Development of security components in a virtualization environment. Setting up full disk encryption with password- and token-based authentication. Development of a web-based management application for remote configuration of the system.

Intern - Fraunhofer ESK – Institute for Communication Systems Technology

Development of a remote control for a PC running on a mobile device. Creation of technical documentation.

Intern - Giesecke & Devrient GmbH

Creation of scripts for the Java build process. Design of a GUI for the build process. Introduction of static code analysis into the software development process. Evaluation of the results.