You're seeing this page as if you were . The main menu is still yours, though. Exit from immersion
Tommy DrzewoszTD

Average response time: 1 hour

Freelancer profile translated to English.
Back to original language

About Tommy

I am a self-employed IT architect and trainer with over 20 years of experience in enterprise environments. My focus is on the interface between software development, system integration, and IT operations. Always where business requirements meet established system landscapes.

Throughout my career, I have implemented projects for DAX corporations (innogy, Westnetz, Bayer, Mercedes-Benz) and well-known medium-sized companies (HARIBO, Wolters Kluwer, Lindner Group). These include business applications with up to 35,000 users, an online shop with 1 million customers, and an app that received the Red Dot Award in 2019.

What I offer:
Development and architecture in the .NET/C# stack with SQL Server, ASP.NET MVC, REST APIs, and modern frontends (Angular, Ionic). I build business applications, workflows, and integrations into existing ERP systems like JTL-Wawi or SAP.

In the area of monitoring, I have been working intensively with PRTG and Zabbix for years. Classic cases include the remediation of established PRTG installations, migrations to Zabbix, or hybrid setups for license optimization.

As a trainer, I have been working for GFU Cyrus AG in Cologne for over 10 years. With 60 evaluated courses with an average rating of 4.75 out of 5.0 stars (77% five-star ratings), participants from DAX corporations, authorities, and medium-sized businesses have attended my training sessions. Topics: .NET, C#, Angular, SQL, software architecture, and increasingly AI-supported development with Claude Code.

How I work:
Remote, hybrid, or on-site. Direct communication, clean documentation, no show-off rhetoric. I speak plainly, even if that means advising against a planned course of action. As my own managing director, I understand the client's perspective: budget, deadlines, and benefits must be right.

Area of operation: DACH (remote preferred, travel to Switzerland and Germany possible).

More information, reference projects, and practical blog articles:
  • German

    Native or bilingual

  • English

    Conversational

Can work on-site
Koblenz (up to 50km)

Experience

  • office direkt Service-Center GmbH,
    Managing Director
    E-COMMERCE
    February 2021 - Today (5 years and 4 months)
    Remagen, RP, Germany
    Operational and strategic management of the company in close coordination with the parent company. Realignment/planning of the company's further development, including investment decisions, taking into account the parent company's requirements. Personnel responsibility for 50 employees (up to 70 seasonally) as well as direct professional and disciplinary management of five department heads. Leading coordination of cooperation with the parent company, sister companies, and all business partners. Conducting negotiations with customers, business partners, and service providers. Worldwide representation of the company towards key accounts and business partners at management level. Responsibility for the operational organization within the company and monitoring of implementation. Preparation of profit and sales forecasts. Execution of cost accounting. Management of new customer acquisition. Responsibility for 3 locations (office and 2 logistics sites).
    JTL-Wawi and E-Commerce PRTG and Zabbix Monitoring IT Strategy Project Management Management
  • Cyrus AG,
    Lecturer
    EDUCATION AND E-LEARNING
    October 2023 - Today (2 years and 8 months)
    Cologne, Germany
    Conducting training sessions and workshops in various IT areas. Imparting practice-oriented knowledge in software development, web programming, and database management, including an introduction to modern programming paradigms, the use of current frameworks and tools, and the implementation of best practices. Development and presentation of application-oriented examples to make complex topics such as object-oriented programming, RESTful APIs, and SQL optimization understandable. Integration of real project requirements into teaching to optimally prepare participants for professional life. Promotion of independent problem-solving skills through interactive exercises and team projects in the mentioned areas.
    IT Training and Knowledge Transfer
  • UDIT GmbH,
    Head of Software Development Department
    DIGITAL AND IT
    January 2014 - February 2021 (7 years and 1 month)
    56 Neuwied, Germany
    Administration of the company's own IT infrastructure. Configuration and management of server and network components. Creation and implementation of concepts on the topics of server virtualization, data backup, network services, and network security. Setup and support of internal test environments.
    Software Engineering C#

Recommendations

Be the first to recommend Tommy

Help this freelancer shine by sharing your experience working together.

These freelancer profiles also match your criteria

AgathaA

Agatha Frydrych

Backend Java Software Engineer

4.7

(3)

2

BaptisteB

Baptiste Duhen

Fullstack developer

4.6

(4)

5

AmedA

Amed Hamou

Senior Lead Developer

4

(2)

7

AudreyA

Audrey Champion

Web developer

4.3

(3)

4

Education

  • IT Specialist Application Development
    Manfred Stoffel Bürotechnik GmbH
    2007
    Fachinformatiker Anwendungsentwicklung
  • Certified Solutions Developer Microsoft Certified Professional Microsoft Specialist Microsoft Specialist: Programming in HTML5 with JavaScript and CSS3
    Microsoft
    Certified Solutions Developer Microsoft Certified Professional Microsoft Specialist Microsoft Specialist: Programming in HTML5 with JavaScript and CSS3

Skill set

Categories