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Winterberg, Germany

Experience

Jan 2021 - Present

5 years 2 months

Essen, Germany

Senior Development Manager

opta data IT GmbH

Coordination of group companies
Setup and development of a central SSO/portal
Department Head DevOps/Development

Oct 2018 - Dec 2020

2 years 3 months

Essen, Germany

Department Head IT / CTO (Development, QA, DevOps, Design)

opta data IT Solutions GmbH

Personnel and budget responsibility > €4M
8 teams, 82 employees, 3 locations

Jan 2000 - Oct 2018

18 years 10 months

Essen, Germany

Department Head Software Development

opta data hard- und software GmbH

Personnel and budget responsibility
Product management
Graphics/design

Aug 1997 - Jan 2000

2 years 6 months

Essen, Germany

Software Developer

opta data hard- und software GmbH

Development and extension of software modules
Bug fixes (COBOL)

Jul 1995 - Jul 1997

2 years 1 month

Munich, Germany

Cinema Manager

Kinowelt Medien AG

Purchasing, scheduling, and staff management for 8 cinemas
Managing 8 full-time employees, scheduling temporary staff

Industries Experience

See where this freelancer has spent most of their professional time. Longer bars indicate deeper hands-on experience, while shorter ones reflect targeted or project-based work.

Experienced in Information Technology (28.5 years) and Media and Entertainment (2 years).

Information Technology

Media and Entertainment

Business Areas Experience

The graph below provides a cumulative view of the freelancer's experience across multiple business areas, calculated from completed and active engagements. It highlights the areas where the freelancer has most frequently contributed to planning, execution, and delivery of business outcomes.

Experienced in Product Development (23.5 years), Human Resources (21 years), Information Technology (10 years), Quality Assurance (4.5 years), Operations (2 years), and Procurement (2 years).

Product Development

Human Resources

Information Technology

Quality Assurance

Operations

Procurement

Skills

Professional And Strategic Project And Product Management
Agile Change Manager
Administrative And Technical Leadership
Agile Development Methodologies
Iso 9001, 27001, C5

Languages

German

Native

Education

Distance learning · Work and organizational psychology

Certifications & licenses

Certified Vocational Trainer (AEVO, IHK)

IHK

IT Specialist for Application Development (IHK)

IHK

ISAQB/PSA Professional Software Architect

ISTQB Certified Tester

Professional SCRUM Master (PSM)

Professional SCRUM Product Owner (PSPO)

Profile

Created

February 2026

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Frequently asked questions

Do you have questions? Here you can find further information.

Where is Carsten based?

Carsten is based in Winterberg, Germany.

What languages does Carsten speak?

Carsten speaks the following languages: German (Native).

How many years of experience does Carsten have?

Carsten has at least 31 years of experience. During this time, Carsten has worked in at least 5 different roles and for 4 different companies. The average length of individual experience is 6 years and 1 month. Note that Carsten may not have shared all experience and actually has more experience.

What roles would Carsten be best suited for?

Based on recent experience, Carsten would be well-suited for roles such as: Senior Development Manager, Department Head IT / CTO (Development, QA, DevOps, Design), Department Head Software Development.

What is Carsten's latest experience?

Carsten's most recent position is Senior Development Manager at opta data IT GmbH.

What companies has Carsten worked for in recent years?

In recent years, Carsten has worked for opta data IT GmbH.

Which industries is Carsten most experienced in?

Carsten is most experienced in industries like Information Technology (IT), Media and Entertainment and Publishing.

Which business areas is Carsten most experienced in?

Carsten is most experienced in business areas like Product Development, Human Resources (HR), and Information Technology (IT). Carsten also has some experience in Quality Assurance (QA), Operations, and Procurement and Purchasing.

Which industries has Carsten worked in recently?

Carsten has recently worked in industries like Information Technology (IT).

Which business areas has Carsten worked in recently?

Carsten has recently worked in business areas like Information Technology (IT).

What is Carsten's education?

Carsten attended education in Work and organizational psychology.

Does Carsten have any certificates?

Carsten has 6 certificates. Among them, these include: Certified Vocational Trainer (AEVO, IHK), IT Specialist for Application Development (IHK), and ISAQB/PSA Professional Software Architect.

What is the availability of Carsten?

Carsten will be available from March 2026.

What is the rate of Carsten?

Carsten's rate depends on the specific project requirements. Please use the Meet button on the profile to schedule a meeting and discuss the details.