Grzegorz Dziełak - Service Owner

Q: Where is Grzegorz based?

Grzegorz is based in Warsaw, Poland and can operate in on-site , hybrid , and remote work models.

Q: What languages does Grzegorz speak?

Grzegorz speaks the following languages: Polish (Native), German (Advanced), English (Advanced) .

Q: How many years of experience does Grzegorz have?

Grzegorz has at least 20 years of experience. During this time, Grzegorz has worked in at least 6 different roles and for 6 different companies . The average length of individual experience is 3 years and 4 months . Note that Grzegorz may not have shared all experience and actually has more experience.

Q: What is Grzegorz's latest experience?

Grzegorz's most recent position is Service Owner at Telefonica .

Q: What companies has Grzegorz worked for in recent years?

In recent years, Grzegorz has worked for Telefonica , Capgemini , and T-Mobile .

Q: Which industries is Grzegorz most experienced in?

Grzegorz is most experienced in industries like Telecommunication , Banking and Finance , and Automotive . Grzegorz also has some experience in Information Technology .

Q: Which business areas is Grzegorz most experienced in?

Grzegorz is most experienced in business areas like Information Technology , Quality Assurance , and Project Management . Grzegorz also has some experience in Product Development .

Q: Which industries has Grzegorz worked in recently?

Grzegorz has recently worked in industries like Telecommunication , Automotive , and Information Technology .

Q: Which business areas has Grzegorz worked in recently?

Grzegorz has recently worked in business areas like Information Technology , Quality Assurance , and Product Development .

Recommended expert

Warsaw, Poland

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Experience

Dec 2024 - Present

1 year 6 months

Service Owner

Telefonica

Responsible for development and maintenance of OpenGateway (framework of common network APIs designed to provide access to operator networks for developers) for Telefonica Germany/O2
Leading the whole development process from the foundation phase till stabilization
Ensuring compliance of delivered solutions with internal policies
Facilitation of requirements workshops, analysis and delivery phase
Identification of potential improvements in terms of performance, functionality, security and generated revenue. Applying AI/ML when feasible

Jun 2022 - Nov 2024

2 years 6 months

Senior Business IT Analyst

Capgemini

Member of a large team (ca. 70 professionals) delivering complex enterprise application for automotive industry (communication with the customer and documentation in German)
Close cooperation with the customer, developers, architects and testers during whole Software Development Life Cycle
Facilitation of Agile Ceremonies, including demo
Reviewing deliverables of another analysts
Organizing and leading knowledge transfer to other team members and vendors

Jan 2012 - May 2022

10 years 5 months

Business and system analyst

T-Mobile

Analytical assignments in various projects (5-200 persons) also in international teams (PL/CZ/SK)
Responsibility for identification and division of analytical tasks (preparation of WBS)
Conducting workshops with users - collecting, analyzing and prioritizing requirements
Developing High Level Design documentation: processes, data structures, GUI sketches using ARIS or Enterprise Architect. Web Service interface design
Designing/reviewing test scenarios
Designing automatic interface tests with SoapUI
Substantive supervision over implementation of requirements by the supplier
Test support at all stages: system, integration, acceptance
Analysis and evaluation of suppliers' offers
Supervision over the correctness of BPMN application in the project

Sep 2010 - Dec 2011

1 year 4 months

Business Analyst

Kredyt Bank

Coordinator of the central system data archiving project
Analyst in the "Family on its own" loan implementation project (collection of requirements, preparation of documentation, cooperation with the supplier)

Dec 2007 - Aug 2010

2 years 9 months

Analyst & Developer

Bank Millennium

Collection of requirements, analysis and coordination of projects in ASP .NET technology (employee portal, IT Helpdesk and knowledge management portal)
.NET – kdpw (Central Securities Depository of Poland) stream system implementation
Participation in software development process optimization and IT management projects
Preparation of technical documentation for the created projects
Administration of Jira, Confluence, Bamboo applications

Dec 2005 - Jul 2007

1 year 8 months

IT Specialist

Bank BPH

Specialist in the team for implementation of transactional products
Collection and analysis of user requirements
Analysis of changes in transaction banking systems
Project coordination, cooperation with system suppliers
User training
Responsibility for migration to the new version of the system handling over 300 thousand transactions per day (TransCollect)
Conducting the process of internal certification of the implemented software
Development of databases and software

Industry Experience

See where this freelancer has spent most of their professional time.

Experienced in Telecommunication, Banking and Finance, Automotive, and Information Technology.

Telecommunication

Banking and Finance

Automotive

Information Technology

Business Area Experience

See which departments and functions this freelancer has contributed to most.

Experienced in Information Technology, Quality Assurance, Product Development, and Project Management.

Information Technology

Quality Assurance

Product Development

Project Management

Skills

Bpmn, Uml – Enterprise Architect/aris
.Net/c#, Java
Soap, Rest Apis
Ms Sql Server, Oracle
Soapui, Postman
Jira, Confluence
Observability: Dynatrace, Kibana

Languages

Polish

Native

German

Advanced

English

Advanced

Education

Oct 2002 - Jun 2008

Warsaw University of Technology

M.Eng. · Information Systems Engineering · Warsaw, Poland

Certifications & licenses

OMG Certified Expert In Business Process Management (OCEB-F100)

OMG Certified UML Professional (OCUP-100)

PMI Certified Associate In Project Management (PMI-CAPM)

Statistics

Experience

Total positions 6

Experience in Telecommunication 12 y

Avg length 3 y 3 m

Longest experience 10 y 4 m

Expertise

Recent roles Service Owner, Senior Business IT Analyst, Business and system analyst

Main industries Telecommunication, Banking and Finance, Automotive

Main business areas Information Technology, Quality Assurance, Product Development

Qualifications

Highest degree Master

Certifications earned 3

Profile

Created

May 2026

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Frequently asked questions

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

Where is Grzegorz based?

Grzegorz is based in Warsaw, Poland and can operate in on-site, hybrid, and remote work models.

What languages does Grzegorz speak?

Grzegorz speaks the following languages: Polish (Native), German (Advanced), English (Advanced).

How many years of experience does Grzegorz have?

Grzegorz has at least 20 years of experience. During this time, Grzegorz has worked in at least 6 different roles and for 6 different companies. The average length of individual experience is 3 years and 4 months. Note that Grzegorz may not have shared all experience and actually has more experience.

What roles would Grzegorz be best suited for?

Based on recent experience, Grzegorz would be well-suited for roles such as: Service Owner, Senior Business IT Analyst, Business and system analyst.

What is Grzegorz's latest experience?

Grzegorz's most recent position is Service Owner at Telefonica.

What companies has Grzegorz worked for in recent years?

In recent years, Grzegorz has worked for Telefonica, Capgemini, and T-Mobile.

Which industries is Grzegorz most experienced in?

Grzegorz is most experienced in industries like Telecommunication, Banking and Finance, and Automotive. Grzegorz also has some experience in Information Technology.

Which business areas is Grzegorz most experienced in?

Grzegorz is most experienced in business areas like Information Technology, Quality Assurance, and Project Management. Grzegorz also has some experience in Product Development.

Which industries has Grzegorz worked in recently?

Grzegorz has recently worked in industries like Telecommunication, Automotive, and Information Technology.

Which business areas has Grzegorz worked in recently?

Grzegorz has recently worked in business areas like Information Technology, Quality Assurance, and Product Development.

What is Grzegorz's education?

Grzegorz holds a Master in Information Systems Engineering from Warsaw University of Technology.

Does Grzegorz have any certificates?

Grzegorz has 3 certificates. These include: OMG Certified Expert In Business Process Management (OCEB-F100), OMG Certified UML Professional (OCUP-100), and PMI Certified Associate In Project Management (PMI-CAPM).

What is the availability of Grzegorz?

Grzegorz will be available full-time from June 2026.

What is the rate of Grzegorz?

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