Security Engineer
Current
Dec 2024 - Present
AeroLeads people directory · profile
Krzysztof Marciniak Email & Phone Number
Security Engineer | Cyber Security Expert
at
Przelewy24
1 work email found
@withsecure.com
LinkedIn matched
✓ Verified August 2026
4 data sources
Profile completeness 100%
Current company
Role
Security Engineer | Cyber Security Expert
Location
Poland
Company size
Who is Krzysztof Marciniak? Overview
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Quick answer
Krzysztof Marciniak is listed as Security Engineer | Cyber Security Expert at Przelewy24, a with 97 employees, based in Poland. AeroLeads shows a work email signal at withsecure.com and a matched LinkedIn profile for Krzysztof Marciniak.
Krzysztof Marciniak previously worked as Security Engineer at Przelewy24 and Security Researcher at Argus Cyber Security Ltd.. Krzysztof Marciniak holds Bachelor Of Science (B.Sc.), Computing And Information Science from Poznan University Of Technology.
Company email context
Email format at Przelewy24
This section adds company-level context without repeating Krzysztof Marciniak's masked contact details.
{first}.{last}@withsecure.com
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AeroLeads found 1 current-domain work email signal for Krzysztof Marciniak. Compare company email patterns before reaching out.
Profile bio
About Krzysztof Marciniak
Developer and system administrator turned security consultant. Helping defend systems by applying offensive security knowledge and experience while utilizing a wide variety of skills.I enjoy learning new things and, in spare time, playing saxophone and tin whistle. I love animals. Whenever possible, I share my knowledge with others to increase awareness and extend security capabilities.
Listed skills include C++11, C, Directx 11, Postgresql, and 26 others.
Current workplace
Krzysztof Marciniak's current company
Company context helps verify the profile and gives searchers a useful next step.
Przelewy24
9 roles
Krzysztof Marciniak work experience
A career timeline built from the work history available for this profile.
Security Researcher
Jan 2024 - Aug 2024
Associate Vulnerability Researcher
Searching for security vulnerabilities in given (external) applications. Assessing the attack surface of applications, source code review and dynamic debugging of applications using GDB.
Jul 2023 - Sep 2023
Security Researcher
Supporting development teams by helping them design applications in a secure manner, preparing and holding external detection & response trainings, performing penetration tests for the internal customer.
Dec 2020 - Jul 2023
Cyber Security Consultant
Performing security assessments of web applications as well as penetration tests against infrastructures, code reviews, threat modellings, hardware security research (including the KeyWe smart lock), host reviews, leading security assessments off- and on-site.
May 2019 - Dec 2020
Junior Security Consultant
Feb 2018 - May 2019
Python Developer
Jan 2016 - Jan 2018
Backend Developer
Python web application developer, mostly in Django but with redis, celery, requests etc. as well. Also responsible for server administration and maintenance (Debian GNU/Linux).
Jan 2015 - Dec 2015
Intern
STB (Set Top Box) application developer, low-level C programming as well as C++ development. Dealing with embedded systems, library cross-compilation and rendering objects on the TV screen.
Jul 2013 - Sep 2013
Team & coworkers
Colleagues at Przelewy24
Other employees you can reach at przelewy24.pl. View company contacts for 97 employees →
BK
Borys Kowalczyk
Colleague at Przelewy24Poznan Metropolitan Area, Poland
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JL
Jakub Lewandowski
Colleague at Przelewy24Poznań, Wielkopolskie, Poland
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AK
Agnieszka Krzyżanowska
Colleague at Przelewy24Poznań, Wielkopolskie, Poland
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AS
Anna Szaniewska
Colleague at Przelewy24Poznań, Wielkopolskie, Poland
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BG
Bartosz Golak
Colleague at Przelewy24Poland
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JR
Jakub Rajca
Colleague at Przelewy24Wyry, Śląskie, Poland
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JN
Justyna Nowakowska
Colleague at Przelewy24Cracow Metropolitan Area, Poland
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GW
Grzegorz Wójcicki
Colleague at Przelewy24Cracow Metropolitan Area, Poland
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PL
Patrycja Linka
Colleague at Przelewy24Poznan, Wielkopolskie, Poland
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MS
Marcin Szubert
Colleague at Przelewy24Poznań, Wielkopolskie, Poland
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Borys Kowalczyk
Colleague at Przelewy24Poznan Metropolitan Area, Poland
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JL
Jakub Lewandowski
Colleague at Przelewy24Poznań, Wielkopolskie, Poland
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AK
Agnieszka Krzyżanowska
Colleague at Przelewy24Poznań, Wielkopolskie, Poland
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AS
Anna Szaniewska
Colleague at Przelewy24Poznań, Wielkopolskie, Poland
View →
BG
Bartosz Golak
Colleague at Przelewy24Poland
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JR
Jakub Rajca
Colleague at Przelewy24Wyry, Śląskie, Poland
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JN
Justyna Nowakowska
Colleague at Przelewy24Cracow Metropolitan Area, Poland
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GW
Grzegorz Wójcicki
Colleague at Przelewy24Cracow Metropolitan Area, Poland
View →
PL
Patrycja Linka
Colleague at Przelewy24Poznan, Wielkopolskie, Poland
View →
MS
Marcin Szubert
Colleague at Przelewy24Poznań, Wielkopolskie, Poland
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1 education record
Krzysztof Marciniak education
FAQ
Frequently asked questions about Krzysztof Marciniak
Quick answers generated from the profile data available on this page.
What company does Krzysztof Marciniak work for?
Krzysztof Marciniak works for Przelewy24.
What is Krzysztof Marciniak's role at Przelewy24?
Krzysztof Marciniak is listed as Security Engineer | Cyber Security Expert at Przelewy24.
What is Krzysztof Marciniak's email address?
AeroLeads has found 1 work email signal at @withsecure.com for Krzysztof Marciniak at Przelewy24.
Where is Krzysztof Marciniak based?
Krzysztof Marciniak is based in Poland while working with Przelewy24.
What companies has Krzysztof Marciniak worked for?
Krzysztof Marciniak has worked for Przelewy24, Argus Cyber Security Ltd., Interrupt Labs, Withsecure, and F-Secure Corporation.
Who are Krzysztof Marciniak's colleagues at Przelewy24?
Krzysztof Marciniak's colleagues at Przelewy24 include Borys Kowalczyk, Jakub Lewandowski, Agnieszka Krzyżanowska, Anna Szaniewska, and Bartosz Golak.
How can I contact Krzysztof Marciniak?
You can use AeroLeads to view verified contact signals for Krzysztof Marciniak at Przelewy24, including work email, phone, and LinkedIn data when available.
What schools did Krzysztof Marciniak attend?
Krzysztof Marciniak holds Bachelor Of Science (B.Sc.), Computing And Information Science from Poznan University Of Technology.
What skills is Krzysztof Marciniak known for?
Krzysztof Marciniak is listed with skills including C++11, C, Directx 11, Postgresql, Opengl >= 3.3, Blender, Unity3D, and Python.
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