Software Developer, Subproject Leader, Linux Admin

Work as a Perl Programmer for a bank.

Work as a Senior Linux Administrator (RHEL 7/8), Ansible, release/deployment management, staging, monitoring with CheckMK.

Planning and development of warehousing software for Android tablets using Xamarin, C#, and .Net.

• Planning and development of a web application for managing temporary employees. The client wanted software to manage its employees who are assigned to industrial companies on a temporary basis. This involved determining hourly rates and ensuring and monitoring compliance with legal requirements.
• Set up the necessary LAMP environment with Ubuntu, as well as customer support and server maintenance.
• As-is analysis.
• Design and implementation of the database structure.
• Programming.
• Tools used: Ubuntu Linux as the server operating system, MariaDB as the database management system, PHP as the programming language, Yii2 as the framework.

• Planning and development of a custom inventory management system. The client was using an outdated in-house solution that increasingly led to data inconsistencies and was no longer supported by newer operating systems.

• In the months before the contract, supported the client in trying to find a suitable off-the-shelf solution on the market. Since the requirements were too specific for standard software, the decision was made to develop a custom solution.

• At project start, recorded the business processes on-site. The findings were reviewed, revised, and optimized with the client. The application was designed using the MVC pattern to ensure maximum flexibility and extensibility.

• As-is analysis.

• Project management.

• Leading the development team.

• Design and implementation of the database structure.

• Programming.

• Employee training.

• Tools used: Microsoft Server 2016 as the server operating system, Microsoft SQL Server as the database management system, Visual Studio C# as the development environment, .Net as the framework, Dapper as the object-relational mapper (ORM), Perl for interface programming and automation jobs on the Linux server.

Planned and developed a web application for tire inventory management using PHP (Yii/PHP/MySQL).

Planned and developed a web application for managing applicant profiles using PHP (Yii framework), including an online job application feature.

Planning and developing a desktop application in C# for configuring WLAN client devices.

Creating a Perl interface to connect a Java community to an Oracle database server with SOAP.

Customizing and programming the OTRS ticket system to integrate with the wireless access gateway solution.

• Maintenance and customization of an internal administrative software based on FML, Perl, and C++ for recruiting and sending informational materials. Over the years, this software was extended with various interfaces.

• Connecting an online community via XML-RPC web services, including generating access credentials and controlling the activation process for new users.

• Connecting to a Lotus Notes application to manage interviews with candidates.

• Transferring data to SAP.

• Tasks included not only implementing the interfaces but also planning and conceptual design, as well as coordinating with the relevant contacts from other systems. Participated in planning and implementing the replacement of the system with an SAP-based solution.

• As-is analysis.

• Technical project management.

• Interface design.

• Programming.

• Tools used: Linux as the server operating system, Oracle as the database management system, FML and C++ for the management software, and Perl for the interfaces and automation jobs.

• Maintenance and enhancement of a time tracking tool in FML.
• Maintenance and development of the Orca kernel and the custom FML programming language in C/C++.

Creating various form servers for online business card ordering with Zope.

Developing an inventory management software for craftsmen in Python/wxWindows.

Developing various database applications with Borland C++ Builder and Visual Basic. Used MS Access and MS SQL Server as databases.