Jens (Christian) Schneeweiß-Software Developer for C, C++, C++/CLI and C#

Porting of thermal printer driver from Windows XP to Windows 10

• Compiled WDK & SDK and examples from the WDK printer driver sample projects to generate .pm files with integrated bitmap in the data stream.
• Identified data formats/control commands from the old driver source code and transferred them into the new driver.
• Adapted the driver by converting kernel mode to user mode by adjusting the SDK / DDK functions.
• Test on the target platform.
• Effort estimate and a small requirements specification.

Label: C++, Visual Studio 2019, 2015, Windows Driver SDK / DDK

Further development of software for steel processing, strip thickness and width measurement

• Programming of screens, the data access layer
• Programming of prototype screens and interfaces.
• Advice on software architecture:, SQL database, C# .Net, redesign of the software.
• Effort estimate and a small requirements specification.
• Qualification of the SDK for ANT+ communication with the measuring devices

Label: C# / C++, SQL Server DB, Visual Studio 2015, GIT Lab, XML, Windows Forms, ANT+

• Setup and troubleshooting of several wireless radio links in the Ruhr area
• Configuration and troubleshooting of routers for an Autonomous System AS
• Cable laying, crimping for radio routers, antennas, routers, switches
• Calculation of wind load and antenna mounts, aligning the antennas
• Maintenance, expansion, selection and prioritization of troubleshooting measures for network monitoring (PRTG, The Dude)
• Organization and troubleshooting of peerings, data center, NGN fiber optic
• VPN IPSec site connections for 6 sites with PFSense, Fritzbox
• Setup of data backup with Acronis
• Setup of Hyper-V servers with 16 RDP clients for cash register systems

Project/team leadership (2-3 system administrators)

Tags: BGP, OSPF, MPLS, VPLS, routing protocols, EoIP, VLAN, PPPoE, routing, WLAN, SNMP, DHCP, DNS, NAT, native IP, VLAN, Ethernet, VoIP. Switches and routers from: Nortel, Cisco, MikroTik, UBNT. Network management systems: The Dude, PRTG,

Programming of software for hand thermometers

• Programming of the screens, the data access layer for: reporting, user management, audit trails, measured values, etc.
• Programming of prototype screens and interfaces.
• Consulting on software architecture: Entity Framework, SQL database, C# .Net, wrapper to C++, etc. New development of the software.
• Use of MS Chart with measured values in curve and tabular form.
• Qualification of the use of old C++ components and
• Creation of a software development concept or requirements specification.

Tags: C# / C++, SQL Server DB, Visual Studio 2015, GIT Lab, XML, Windows Forms, Metro, SAP Crystal Reports, Redgate Toolbelt

Adaptation and extension of a project on two different processors (Microchip PIC16F1938 and Freescale Coldfire MCT51CN128)

• A module had to be programmed (level sensor AGC (AGC controlled, as many levels as possible), temperature sensor, etc.)
• The master card uses a Coldfire processor. The Coldfire must communicate as master via RS485 with 17 Microchip slaves and transmit status data. The Coldfire provides the data via a website. A few settings can be made on the device via the website, including 12V, 18V, 22KHz generator, level sensor AGC (on/off), etc.
• Create XML file to show whether smooth operation of all devices is ensured, etc.)

Further development and bug fixing of state-owned Office systems for tax offices

• Bug fix during the migration to Office 2016
• Bug fix in the complex interpreter and parser of the merge system, source code analysis
• Extension for file format adjustment at runtime based on the content of the Office documents
• Participation in a Scrum workshop.

Label: C#, .NET development clients (WinForms), MSTest, XML, XSLT, Office 2016, VSTO, Excel, Word, WCF interfaces (SOAP, REST, WebAPI), approach: TDD (Test Driven Development), MVC, Visual Studio 2017, Team Foundation Server (TFS), project team (4 developers)

Worked on the further development and support of planning software

Code analysis and documentation of the functionality of the validation area of about 100 T-SQL stored procedures

• Adaptation of the middle tier and the UI for new features such as: youth protection indicator, switch-in planning, etc.
• Programming of stored procedures for different data checks
• Adaptation of MAKE and Bash scripts for the extensions of the SQL macro language belonging to the system.
• Support for users and troubleshooting in the live system. SQL scripts for creating users, rights, views and reports.
• Documentation in Wiki, Excel, MS Office.

Label: Visual Studio 2005, C++, MFC, BCGCBPro, SQL Enterprise Manager, SQL Server 2012, T-SQL, Linux, Windows 8 and 10, JIRA, Confluence, use and extend make scripts, XML, XSL, 4 team members

Performance analysis and optimization of a XAML WPF UI for process monitoring software

• Joint code analysis, code review of the existing system
• Team programming, pair programming
• Porting the application from .NET 4.0 to .NET 4.5.1
• Porting the SyncVision controls with data binding from version 11 to version 13
• Documentation of the development steps through work instructions for the migration from SyncVision 11 to 13, as well as for the upgrade from .NET 4.0 to .NET 4.5.1 in English.

Label: .NET 4.5, C#, Microsoft Visual Studio 2012, Prism Framework, dependency injection, MVVM, on-site with 3 developers, team of 8 developers, offshore

Company internet connection via radio links

• Setup of several microwave radio links in the Ruhr area
• Configuration of routers for an autonomous system AS
• Cable laying, crimping for radio routers, antennas, routers, switches
• Calculation of wind load and antenna mounts
• Alignment of antennas
• Maintenance and expansion of network monitoring (PRTG, The Dude)
• Organization of peerings, data center, ATM VC3 fiber optic

Project/team lead (2-3 system administrators)

Label: BGP, EoIP, VLAN, PPPoE, routing, WLAN, SNMP, DHCP, DNS, NAT, native IP, VLAN, Ethernet, VoIP. Switches and routers from: Nortel, Cisco, MikroTik, UBNT.

Data logger programming

• Development of a data logger for communication with a welding machine via RS232 interface. The application can display received data in table and chart form, printing and saving (log file) are also possible.
• Implementation of copy protection via Sentinel USB dongle

Project/team lead (2-3 software developers)

Label: C++, wxWidgets, Subversion, Windows XP, 7, Embedded 7, 8, 8.1 RT, RS232

Unit tests and development for a PC-based control system for a lab system

• Development and design of unit tests with MS-Test and Moq for a medical technology control system.
• Development/programming of additional client/server functionalities from the Oracle database to the Silverlight interface.
• Support with project management by administering some Team Foundation Server functions.

Label: C#, .NET 4.0, Visual Studio 2010, TFS (Team Foundation Server 2010), HP-QC, MS-Test, Moq, LINQ, ReSharper, Scrum team, 3-week sprint, approx. 50-person developer team

Bug fixing in a complex software for a ticket printer for vehicles in public transport

• Troubleshooting related to individual hardware peripherals, hardware via IBIS bus.
• Fixes in modules for GPS localization using geographic coordinates.
• Helped revise requirements specifications.
• Packaging and versioning of software releases and maintenance in custom tools.

Label: C++, Windows CE 4.2 and CE 6.0, XML, SVN, Bugzilla, Visual Studio 2008, Windows Embedded CE 6 SDK

Bug fixing on various components in the PCL and PostScript printer driver environment.

• Attempts to fix errors in a PCL driver for the mass printing area of a large insurance company.
• Programming an OCX DLL with C++, MFC for access to various printer driver tools from, for example, Excel or Navision 3.7.
• Scripting several installers as a Visual Studio Installer project, creation/translation of a help file
• Building a test system with three virtual machines: Server 2008, XP and Windows 7, to improve understanding of the printer driver installation in the 32-bit and 64-bit versions.
• Managing a development team abroad
• Functional tests, load tests of the different release versions, speed tests (printing large TIFF files)
• Development of a requirements profile (what the program should be able to do)

Label: TortoiseSVN, Git, C, C++, directPCL, directCONVERT V5, Boost library, Visual Studio 2005, PostScript, Make

Worked on the conversion (migration) of a logistics application from 50 decentralized Oracle 9i database-based two-tier systems to a central Oracle 11g database cluster (Data Guard).

• Programming a complex password policy (MFC/C++) in an existing logistics application with 1300 clients and 51 servers. Creation of the password query dialogs and the database access layer (SourcePro/SQL).
• Investigation, concept and development of a test tool (MFC/C++/SQL) to examine connection stability for ORACLE SQL.Net WAN communication.
• Building a lab with a bandwidth manager for WAN simulation. Bandwidth and theoretical analysis (network) of the WAN/VPN routes, layers, components and investigation of possible effects of Zebedee properties with low bandwidth, low network reliability and packet loss in the WAN.
• Possible issues arising from multithreading and synchronization were also roughly examined.

Label: MFC forms, C++ Visual Studio 2010, SourcePro, Rogue Wave, Oracle 10g, SQL database, SQL Developer.

Programming work on an L2 process control system for a rolling mill.

Expansion of the visualization/HMI, the client-server modules, and the process framework for distributed and concurrent modules in C++/Java/Oracle DB (stored procedures) in a 3-tier architecture, redundant process control, Oracle Data Guard and a redundant visualization layer.

• C++, MFC, further development of a complex tool for automatically creating Matlab data files from parts of the process information via an O/R mapper from the SQL Oracle DB.
• C++, MFC, process/service for the automated creation of evaluation data in Matlab format.
• C++/CLI .NET, process/service, development of a service for automating data files from measurement points and into IMS/MEVInet-Q measurement system format.
• C#.NET, programming of console applications to filter and evaluate data from large text log files and display statistics.
• MS Batch Script, creation of a batch script for implementing an IP cluster. Remote WMI control with redundant IP address switching/failover for 4 HP-DL380 servers. And further administration with batch scripts.
• Administration of the build system for the HMI GUI and administration of about 20 Windows Server 2008 HP servers.
• Java, extension and bug fixing of the complex Java HMI client system. Use of the MVVM pattern and the O/R mapper architecture.

Label: C++, Java and C#, C++/Java object-relational mapper, MVVM, Oracle 11g, SQL Developer, IIS, WPF-GUI interop, .NET Console C++/CLI application, MFC, C# .NET, Java, Eclipse IDE 1.2.0, Oracle, SQL Developer, CA ERwin Data Modeler, SVN (Subversion), VSS (Visual SourceSafe), (in a team of about 8 software developers with SVN for Java and VSS for C++).

Development of an administration and management tool for services and workflow-based processes in a dynamic WPF interface.

Development of a framework application and 3 add-ins to monitor a system distributed across multiple services. Queries via WMI with query strings to determine server status and parameters. Monitoring and display of database storage capacity and distribution using a custom stored procedure. Query GUI for the technical, historical, and logging information of the entire system.

.NET 4.0, C#, XAML, WPF (Windows Presentation Foundation), WCF/REST, WF, LINQ, programming and software design concept (in a team of 8 software developers with SVN). Development of the printing component of a workflow-based call center-like application.

SQL Server 2008 Reporting Services, Report Viewer, local rendering and connection to the report server via the ReportViewer control. For the automatic generation of PDFs with partly Arabic texts. Development of a test client.

Label: .NET 4.0, WCF, REST, SQL Server Reporting Services (SSRS), ReportViewer, programming and software design concept (in a team of 8 software developers with SVN).

Development of an alerting system for municipalities for voice, fax, and mass sending of SMS (Short Message Service) messages.

System setup with several services for processing messages from the process computer and handling web requests from control centers. Team coordination (3 software developers, Visual SourceSafe) and programming.

Label: C#, ASP.NET 3.5, SQL Server 2005, Stored Procedures, T-SQL.

Development of an interface simulator for a custom serial full-duplex telegram, with logging and process simulation for interface prototype development and module tests.

For a leading provider of optoelectronic products. Windows Forms application with 3 tabs, several custom controls, etc. software detailed design, team coordination (quality responsibility for the work of 2 software developers), programming.

Label: C#, .NET 2.0, 3.5, Visual Studio 2008, multithreading.

Creation of an interface concept for connecting an optoelectronic system to the central electronics of a military vehicle.

For a provider of optoelectronic products on behalf of a European manufacturer of armored wheeled and tracked vehicles. concept development, prototype development, hardware qualification.

Label: C, C# .NET 3.5, RS422, serial interface driver

• UDT/UDP data transport implementation for the video CMS (4 months).

Development of a custom data transfer library for long distances and high (poor) response times (satellite data link, New York, Berlin, Cologne, mobile production van), high data transfer speeds of 100 MBit/s and large files >4 GByte over the WAN IP network, using the UDT library. Testing of UDP data transport over the WAN IP network with a special test client, integration into the corresponding modules of the video content management system. Creation of client and server libraries for flexible use in different areas, implementation of robust multithreading for continuous monitoring of the data transfer status. Testing of the system: locally, in the test setup and under operating conditions.

Label: C++, MFC, Visual Studio 2005, UDP-based data transfer library, Sybase, Access, Aqua Data Studio 4.7, TCP/IP, UDP/IP, UDT v3.3 socket programming, network programming, debugging, systematic problem analysis / debugging in complex environments, processes / threads (multi-threads).

• SOAP technology toolkit qualification (0.5 month).

To connect video editing via Final Cut on Apple Macintosh to the VPMS (Video Production Management System), it was planned to set up a web service interface on top of the central database data access layer (C++ COM DLL). Various SOAP toolkits were checked for usability, web service client on Macintosh and web service server on Windows PC.

Label: C++, C#, .NET 2.0, Visual Studio 2005, SOAP, gSoap, cSoap, Axis C++.

• Extension of user authentication in VPMS (1.5 months).

Continuation of an already started work package to enable automated rights assignment for Active Directory authenticated users. Optimization of program flow, fixing errors, code review, refactoring and testing of the different modes in the main programs.

Label: C++, MFC, Visual Studio 2005, SQL, systematic problem analysis / debugging in complex environments.

Sensor interface (class library) for CE .NET based devices, for communication with heat meter sensors via a serial interface protocol.

Development of stream drivers that support proprietary protocols and transfer rates. Wrapper class that is integrated as an API into the .NET Compact Framework and used in a .NET Compact Framework application. Monitoring interface for debugging interface communication.

Label: .NET Compact Framework, Pocket PC 2003, Embedded Visual C++ 4.0, Visual Studio 2003, Visual Studio 2005, UML, team coordination, concept, implementation of the functional prototype.

CAD viewer for *.dgn data (Bentley) for the facility management system.

Development of the CAD viewer module with bidirectional communication between the facility management system and the Bentley Microstation CAD database of the largest German airport. Use of the DGNdirect toolkit for access to and editing of the CAD data. Zoom, selection, highlighting, and labeling functions. Programming of the prototype, work on the concept.

Label: MFC, COM, STL, Visual Studio 6.0, Visual Studio 2003, DGNdirect.

Web application for the process visualization and control system for municipal information and control systems.

Work on the process control and staff planning system based on ASP.NET Internet technology.

Label: ASP. NET, C#, SQL Server 2000, COM/DCOM, Stored Procedures, SQL, ADO.NET UML, Visual Studio 2003.

Extension of a process control software with another industrial bus interface (CAN-Open) to the control center.

Programming, multithreading, UML documentation

Label: C++ Borland Builder.

Import and export tool for OMS HCT merchandise management.

Requirements analysis and programming.

Label: C#, ADO, .NET 1.1, Visual Studio, MySQL, SQL

Tenant data system for office parks.

Label: Programming, Visual Studio 2003, SQL Server 2000, Direct X, multithreading, SQL, Remoting.

Development of MMC Snap-In:

Development of a snap-in for the Microsoft Management Console to enable configurations in an information logistics system running in parallel to the database.

Label: COM, ATL, Visual Studio 6.0.

Process computer-controlled air supply for printing presses.

• Implementation of an OPC server interface, COM/DCOM.
• Development of an OPC diagnostics client.
• Connection of a remote control via the serial interface.
• Function and visualization module for the remote control.
• Connection of the control system via ARCNET as an industrial bus to a control room computer.
• Programming of a control room simulation program.
• Error analysis, correction of data transmission errors using special measurement technology.
• Development of a program module for language independence.
• Compiler development for the logical linking of digital signals.
• Market analysis and qualification of hardware and software modules.
• Documentation of the software and creation of user manuals.

Creation of configuration tools and GUI with C++ and Visual Basic 6.0.

Label: ATL, COM/DCOM, OPC, multithreading, IDL, Windows 2000

Process computer-controlled air supply for printing presses.

• Organization of an object-oriented structure for process data.
• Connection of a text database.
• Interface programming for analog and digital cards.
• Teamwork with a software engineer for integrating the user interface.
• Development of time-dependent, sequential functions.
• Extension of the program with a hierarchical initialization parser.
• Development of the configuration generator.
• Development of a kind of software PLC module. Development of the core module for exchanging process data.

Label: Windows 3.11, DOS

Protocol extension in a process control system for controlling plastic molding machines.

• Protocol functionality.
• DOS, Turbo Pascal, administrative tasks.
• Expanded and fixed errors in an editor for a special text format.
• Batch file development for administrative tasks.

Label: Windows 3.11, DOS