AeroLeads people directory · profile
Jacek Tomaszewski Email & Phone Number
CEO and Founder
at
Data Responder
1 work email found
@mastertele.com
LinkedIn matched
✓ Verified May 2026
4 data sources
Profile completeness 100%
Who is Jacek Tomaszewski? Overview
A concise factual answer block for searchers comparing this professional profile.
Quick answer
Jacek Tomaszewski is listed as CEO and Founder at Data Responder, based in Gdynia, Pomorskie, Poland. AeroLeads shows a work email signal at mastertele.com and a matched LinkedIn profile for Jacek Tomaszewski.
Jacek Tomaszewski previously worked as CEO / Founder at Data Responder and CMO at Master Telecom. Jacek Tomaszewski holds Engineer from Gdańsk University Of Technology.
Company email context
Email format at Data Responder
This section adds company-level context without repeating Jacek Tomaszewski's masked contact details.
{first}.{last}@mastertele.com
86% confidence
AeroLeads found 1 current-domain work email signal for Jacek Tomaszewski. Compare company email patterns before reaching out.
Profile bio
About Jacek Tomaszewski
I'm business and communication products development manager, experienced in projects with various scales and budget, often demanding smart and multidisciplinary approach.Together with my team I've successfully launched a few communication-oriented products and services. I'm focused on developing, improving and providing high quality, easy to use products with amazing user experience - from idea to market entry.My success is based on creative use of ICT technology, innovative thinking, proven team and high determination. Please feel free to contact me if you have any ideas or needs.
Listed skills include Telecommunications, Network Design, Management, Business Strategy, and 19 others.
Current workplace
Jacek Tomaszewski's current company
Company context helps verify the profile and gives searchers a useful next step.
Data Responder
Website
AeroLeads page
8 roles · 29 years
Jacek Tomaszewski work experience
A career timeline built from the work history available for this profile.
Ceo / Founder
Cmo
Ceo
designs innovative solutions, implements and maintains telecommunication systems for companies, telecoms and outsourcing contact centers
Mar 2007 - Mar 2024
Cto Research And Development, Member Of The Board
Elterix S.A. (Mediatel S.A. Group)
project team management, implementation of projects for the company and contractors, co-operation with business partners
2006 - Mar 2007
Research And Development Manager
Elterix S.A.
team building, implementation of new products for the company, voice/voip platform projects, customer service
2004 - 2006
~2 yrs
Regional Technical Manager
Elterix S.A.
urban telecom infrastructure management, design and implementation of telecom network, improving the quality of operational network maintenance
2000 - 2004
~4 yrs
Telecommunications Specialist
Elterix S.A.
telecom equipment maintenance, programming, network design, public and private exchanges management, telecom networks interconnects, equipment implementation and staff training in new company branches
1997 - 2000
~3 yrs
2 education records
Jacek Tomaszewski education
Engineer
Gdańsk University Of Technology
Technician
Secondary Technical School Of Communication Technology
FAQ
Frequently asked questions about Jacek Tomaszewski
Quick answers generated from the profile data available on this page.
What company does Jacek Tomaszewski work for?
Jacek Tomaszewski works for Data Responder.
What is Jacek Tomaszewski's role at Data Responder?
Jacek Tomaszewski is listed as CEO and Founder at Data Responder.
What is Jacek Tomaszewski's email address?
AeroLeads has found 1 work email signal at @mastertele.com for Jacek Tomaszewski at Data Responder.
Where is Jacek Tomaszewski based?
Jacek Tomaszewski is based in Gdynia, Pomorskie, Poland while working with Data Responder.
What companies has Jacek Tomaszewski worked for?
Jacek Tomaszewski has worked for Data Responder, Master Telecom, Elterix S.A. (Mediatel S.A. Group), and Elterix S.A..
How can I contact Jacek Tomaszewski?
You can use AeroLeads to view verified contact signals for Jacek Tomaszewski at Data Responder, including work email, phone, and LinkedIn data when available.
What schools did Jacek Tomaszewski attend?
Jacek Tomaszewski holds Engineer from Gdańsk University Of Technology.
What skills is Jacek Tomaszewski known for?
Jacek Tomaszewski is listed with skills including Telecommunications, Network Design, Management, Business Strategy, Voip, Contact Centers, Networking, and Network Administration.
Find 750M verified contacts
Search by job title, company, industry, location, and seniority. Export verified B2B contact data when you need it.
Start free trial