Senior 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 service of Adips, a member of Astec Group.

Astec Group provides IT 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 connectors for Microsoft technologies

Rublon provides connectors that provide multi-factor authentication for Microsoft technologies written in C#/.NET: Remote Desktop Web Access, Remote Desktop web client, Outlook Web App (OWA). We want to enhance these products by supporting more use cases and IT environments.

How You’ll Work

• Location: 100% remote or office in Katowice, Krakow, Poznan, Warsaw, Wroclaw, Zielona Gora
• Technology Stack: C#, .NET, C++, 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, two external monitors, Jabra headset, keyboard and mouse
• Self development: access to online training courses, sponsored certifications
• Benefits: access to private medical care and MultiSport card

What You’ll Do

As a Senior C# Windows Developer on the Rublon team you will help develop software for modern user authentication: - Development of Rublon connectors for Microsoft technologies - Develop additional features for the Outlook Web App connector - Enable high availability deployments on large-scale IT infrastructure for hundreds of thousands of users - Add native compatibility with FIDO2 security keys - Add support for Azure Active Directory identities - Upgrade installer to MSI format - Develop enterprise software solutions for 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# and .NET software development
• Experience with C++ software development
• Knowledge about Windows API
• Ability to confidently communicate with peers
• Knowledge of Polish or English language

Nice To Haves

• Knowledge of Windows Server administration
• Knowledge of Active Directory and Azure Active Directory
• Experience in development of installation packages (e.g. MSI)
• Knowledge of other programming languages like Java, Python or PHP
• Knowledge of software application security
• 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

• 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