C++ Windows Developer (Cyber Security)

Join Rublon to work with a team of cybersecurity enthusiasts who are building the future of enterprise user authentication. Rublon is a multi-factor authentication platform used by hundreds of customers across the globe to protect employee logins to networks, servers and applications. Rublon is a sister company of Astec IT Services.

Astec IT Services provides consulting, custom software development and cloud services. We have helped market leaders to unlock their potential by delivering digital innovation in the automotive, energy and telecom sectors since 1993. Astec teams are hired to advise clients on innovation and to design, build, maintain and support compliant enterprise software solutions.

We are looking for a long-term employee or contractor who will support ongoing development efforts in the following project:

Development of Rublon for Windows

Rublon for Windows Logon & RDP is a Windows credential provider that allows our customers to enable multi-factor authentication (MFA) on Windows workstations and servers. We want to enhance this product by supporting more use cases and IT environments.

How You’ll Work

• Location: 100% remote or office in Krakow, Poznan, Warsaw, Wroclaw, Zielona Gora
• Technology Stack: C++ 11, Qt 5, Windows API, Active Directory, FIDO, Inno Setup
• Team: 6 Developers, 1 Tech Lead, 1 Technical Writer, 1 Product Manager
• Language: Polish or English for communication with team members; English for project documentation and commit comments
• Hardware: modern laptop
• Benefits for employees: access to private medical care and MultiSport card

What You’ll Do

As a C++ Windows Developer on the Rublon team you will help develop software for modern user authentication:

• Development of Rublon's Windows credential provider
• Improve its native compatibility with FIDO2 security keys
• Build a true offline mode for use in situations without internet access
• Add support for Windows Hello
• 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 product manager
• Monitor code quality and perform code reviews
• Design, implement and execute development and integration tests

Skills You Have

• Experience with C++ 11 software development on Windows
• Knowledge about Windows API
• Ability to confidently communicate with peers
• Knowledge of Polish or English language

Nice To Haves

• Experience working with Qt Framework
• Knowledge of FIDO authentication standard
• Experience with Windows Server administration
• Experience with Active Directory and Microsoft Entra administration
• Knowledge of Windows application security
• Knowledge of certificate-based user authentication on Windows
• Experience in preparation of MSI installation packages
• Knowledge of C# programming language
• Demonstrated success as part of a distributed team
• Good knowledge of English language (level B2 or better)

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

1. You’ll be invited to an online meeting with our recruiter
2. Afterwards, we’ll ask you to do a small assignment, which will then be discussed with one of our technical leads
3. If everything goes well, we will make you an offer and invite you to a final interview