Rust/C++ Software Engineer (ZTNA)

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 Web Proxy and Zero Trust Network Access Security

Rublon’s research and development activities on securing access to applications will enable us to build innovative solutions for passwordless multi-factor authentication. By leveraging web proxies and Zero Trust Network Access (ZTNA) principles, we are creating technologies that transform how enterprises provide secure, seamless, and user-friendly access to business-critical resources.

How You’ll Work

• Location: Remote or from our offices in Kraków or Zielona Góra, Poland.

• Become part of Rublon’s R&D team working on the future of passwordless authentication and ZTNA.

• Collaborate with engineers, product managers, and security experts to design and deliver secure, innovative solutions.

• Work with cutting-edge technologies including Rust, C++, TypeScript, and FIDO2.

• Benefit from opportunities for self-development through training, courses, and knowledge sharing.

• Experience a culture that values creativity, innovation, and technical excellence.

What You’ll Do

• Design, implement, and optimize secure, high-performance software in Rust and C++.

• Contribute to components related to passwordless authentication in TypeScript.

• Build secure and scalable solutions for web proxies, reverse proxies, and communication layers.

• Prototype and validate new ideas by creatively combining modern technologies.

• Participate in architectural design sessions, code reviews, and technical discussions.

• Deliver clean, maintainable, and secure code following industry best practices.

Skills You Have

• 3+ years of commercial experience in software development with Rust, C++, and/or TypeScript.

• Familiarity with web proxy and reverse proxy concepts.

• Strong ability to create innovative solutions with modern technologies.

• A genuine interest in information security and secure software design.

Nice To Haves

• Experience with Python.

• Knowledge of FIDO2 / Passkeys and passwordless authentication.

• Understanding of software application security.

• Familiarity with web servers and system administration.

• Hands-on experience with CI/CD environments (e.g., Docker).

• Background in penetration testing or offensive security.

• Advanced degree in Cybersecurity, Information Security, Computer Science, or equivalent experience.

Why Apply

• Join a company trusted by enterprises worldwide to secure digital identities.

• Work on cutting-edge research and development in passwordless authentication and ZTNA.

• Collaborate with some of the brightest experts in cybersecurity.

• Develop your career in an environment that values self-development, knowledge sharing, and continuous learning.

• Be part of a supportive culture that fosters creativity and bold thinking.

Steps After You Apply

1. Submit your application and share your experience with us.

2. Our recruitment team will review your profile.

3. If there’s a fit, you’ll be invited to an initial conversation with our recruiters.

4. You’ll then move forward with technical interviews with our engineering team.

5. Successful candidates will complete a final cultural and values interview.

We look forward to connecting with you and exploring how you can help us shape the future of passwordless authentication.