C++ Windows Security Researcher
Join Rublon to work with a team of cybersecurity enthusiasts who are building the future of enterprise user authentication. Rublon MFA is a multi-factor authentication platform used by hundreds of customers across the globe to protect employee logins to networks, servers and applications.
We are looking for a long-term employee who will support us in the following area:
R&D on Windows and Active Directory Security
Rublon’s research & development activities on Windows and Active Directory security will enable us to develop new solutions for passwordless multi-factor authentication in these environments. This is a greenfield project.
How You’ll Work
Location: 100% remote or office in Krakow, Zielona Gora
Technology Stack: C++, Windows Server, Active Directory, LDAP, Kerberos, NTLM, Entra ID, FIDO2
Self development: access to online training courses, sponsored certifications
Benefits for employees: access to private medical care and MultiSport card
What You’ll Do
As a C++ Windows Security Engineer on the Rublon team you will help develop software for modern user authentication:
Perform security research on authentication protocols (LDAP, Kerberos, NTLM, SMB)
Research on Windows and Windows Server security
Research on MFA integration possibilities with Windows and Windows Server
Research on Active Directory security
Research on Kerberos and NTLM authentication protocol security
Research on MFA integration possibilities with Active Directory
Research on usage of Trusted Platform Module (TPM) on Windows for secure user authentication
Research on usage of Bluetooth on Windows for secure user authentication
Develop enterprise software solutions for Windows user authentication
Development takes place locally on your company laptop as well as on external testing environments
Analyze requirements, create concepts and discuss them with the project and product manager
Monitor code quality and perform code reviews
Design, implement and execute development and integration tests
Skills You Have
Experience with reverse engineering and tools like IDA Free/Pro, Ghidra
Experience with Windows software development (e.g. C++)
Knowledge of Windows Server, Active Directory and GPO
Knowledge of Windows API
Knowledge of Kerberos and NTLM authentication protocols
Knowledge of Windows technical security standards and internal controls
Familiarity with VBA and PowerShell scripting
Ability to confidently communicate with peers
Knowledge of Polish or English language
Nice To Haves
Experience with Rest and/or C# programming language(s)
Experience with Qt development framework
Formal education and advanced degree in Information Security, Cybersecurity, Computer Science or similar and/or commensurate demonstrated work experience in the same
Knowledge of software application security
Demonstrated success as part of a distributed team
Why Apply
You love collaborating with, teaching, and learning from high-performing peers on software projects
You work best in teams of high-performers rallying around achieving a common goal
Steps After You Apply
You’ll be invited to an online meeting with our recruiter
Afterwards, we’ll ask you to do a small assignment, which will then be discussed with one of our technical leads
If everything goes well, we will make you an offer and invite you to a final interview