Josef Cacek
AeroLeads people directory · profile

Josef Cacek Email & Phone Number

Senior Software Engineer at SentinelOne
Location: Brno, South Moravia, Czech Republic 13 work roles 1 school
1 work email found @hazelcast.com LinkedIn matched
✓ Verified Jul 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email

Work email j****@hazelcast.com
LinkedIn Profile matched
3 free lookups remaining · No credit card
Current company
Role
Senior Software Engineer
Location
Brno, South Moravia, Czech Republic
Company size

Who is Josef Cacek? Overview

A concise factual answer block for searchers comparing this professional profile.

Quick answer

Josef Cacek is listed as Senior Software Engineer at SentinelOne, a with 2960 employees, based in Brno, South Moravia, Czech Republic. AeroLeads shows a work email signal at hazelcast.com and a matched LinkedIn profile for Josef Cacek.

Josef Cacek previously worked as Security Researcher at Azul and Security Architect at Hazelcast. Josef Cacek holds Master'S Degree, Informatics from Masaryk University Brno.

Company email context

Email format at SentinelOne

This section adds company-level context without repeating Josef Cacek's masked contact details.

{first}@hazelcast.com
86% confidence

AeroLeads found 1 current-domain work email signal for Josef Cacek. Compare company email patterns before reaching out.

Profile bio

About Josef Cacek

Security architect and Java developer with extensive knowledge of Java EE. Open source software enthusiast and contributor or author in several projects.

Listed skills include Java Enterprise Edition, Java, Jboss Application Server, Software Development, and 15 others.

Current workplace

Josef Cacek's current company

Company context helps verify the profile and gives searchers a useful next step.

SentinelOne
Sentinelone
Senior Software Engineer
South Moravian Region, Czechia
Website
Employees
2960
AeroLeads page
13 roles · 27 years

Josef Cacek work experience

A career timeline built from the work history available for this profile.

Senior Software Engineer

South Moravian Region, Czechia

Security Researcher

Brno, South Moravia, Czechia

Security Architect

Brno, South Moravia, Czechia

Main responsibilities:* Helping teams across the company with security-related decisions;* Developing new security features;* Driving third-party penetration testing efforts and evaluating the findings;* Identifying, evaluating, and fixing security issues;* Providing security-related code reviews;Other responsibilities:* Managing part of Engineering infrastructure - Jenkins CI, JFrog, Greenbone Vulnerability Manager, Docker Hub, GitHub;

Feb 2021 - Oct 2024

Security Engineer / Java Developer

District Brno-City, Czech Republic

As a contractor responsible for developing new security features and maintaining existing ones; evaluating penetration testing results provided by 3rd party companies and performing in-house penetration testing. Some of the implemented features: properties encryption in the configuration files, untrusted deserialization protection, LDAP and Kerberos based authentication.

Apr 2019 - Feb 2021

Java Developer

Brno

Member of the Hazelcast Core team focused on security, but working on several other features too - e.g. Java modules support, new I/O subsystem and more.

Jul 2018 - Mar 2019

Quality Engineer

District Brno-Country, Czech Republic

Helping to establish QE team within Hazelcast and its processes; writing test plans and automated tests for new features; maintaining CI environment (Jenkins).

Oct 2017 - Jun 2018

External Lecturer

District Brno-City, Czech Republic

Leading administration courses for WildFly application server and JBoss Enterprise Application Platform.

Dec 2017 - Jul 2021

Principal Quality Assurance Engineer

District Brno-City, Czech Republic

Testing security components in JBoss Enterprise Application Platform (EAP), mainly focused on WildFly Elytron project and its integration to the application server. Responsible for Common Criteria Certification testing of the JBoss EAP.

Aug 2015 - Sep 2017

Senior Quality Assurance Engineer

District Brno-City, Czech Republic

Testing JBoss Enterprise Application Platform (EAP) in containers and clouds. Expert in security components of the JBoss application server. Responsible for Common Criteria Certification testing of the JBoss EAP.

Mar 2012 - Jul 2015

Senior Java Developer

Vienna, Austria; Brno, Czech Republic

Identity and Access Management software development - DirX Access;Programming business logic of tolling systems for lorries based on GPS/GSM technologies;

Nov 2004 - Feb 2012

Java/Jee Consultant And Developer

Lfrz - Land-, Forst- Und Wasserwirtschaftliches Rechenzentrum

Vienna, Austria

Developing and designing Java web applications for public sector customers (Agrarmarkt Austria and Bundesministerium für Land- und Forstwirtschaft, Umwelt und Wasserwirtschaft);Providing Java know-how among projects;

Sep 2005 - Sep 2009

Programmer And Tester

Brno, Czech Republic

Programming a product aimed at IT-Controlling – Valuemation;Software testing;

2000 - 2004 ~4 yrs

Part-Time Teacher At Faculty Of Informatics

Brno, Czech Republic

Subjects taught:-Modern mark-up languages and their applications;-Introduction to programming;-Introduction to Object oriented programming;

2000 - 2003 ~3 yrs
Team & coworkers

Colleagues at SentinelOne

Other employees you can reach at sentinelone.com. View company contacts for 2960 employees →

1 education record

Josef Cacek education

FAQ

Frequently asked questions about Josef Cacek

Quick answers generated from the profile data available on this page.

What company does Josef Cacek work for?

Josef Cacek works for SentinelOne.

What is Josef Cacek's role at SentinelOne?

Josef Cacek is listed as Senior Software Engineer at SentinelOne.

What is Josef Cacek's email address?

AeroLeads has found 1 work email signal at @hazelcast.com for Josef Cacek at SentinelOne.

Where is Josef Cacek based?

Josef Cacek is based in Brno, South Moravia, Czech Republic while working with SentinelOne.

What companies has Josef Cacek worked for?

Josef Cacek has worked for Sentinelone, Azul, Hazelcast, Ict Pro S.R.O., and Red Hat.

Who are Josef Cacek's colleagues at SentinelOne?

Josef Cacek's colleagues at SentinelOne include Naveen S, Charlene Begley, Tanmayi D, Shekhar Mitra, and Daniel K..

How can I contact Josef Cacek?

You can use AeroLeads to view verified contact signals for Josef Cacek at SentinelOne, including work email, phone, and LinkedIn data when available.

What schools did Josef Cacek attend?

Josef Cacek holds Master'S Degree, Informatics from Masaryk University Brno.

What skills is Josef Cacek known for?

Josef Cacek is listed with skills including Java Enterprise Edition, Java, Jboss Application Server, Software Development, Linux, Xml, Web Applications, and Programming.

Find 750M verified contacts

Search by job title, company, industry, location, and seniority. Export verified B2B contact data when you need it.

People with similar names

Check these profiles if this is not the Josef Cacek you were looking for.

View similar profiles