Principal Distributed Systems Engineer (M/F/D)

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Job Description:

Be part of something special; come join the Secusmart Software Development team!

Secusmart, a subsidiary of BlackBerry Limited, is the leading expert in the development and implementation of comprehensive anti-eavesdropping solutions for German government agencies and emergency services as well as governments and public authorities worldwide. With teams in Germany and North America, we secure enterprise information and applications on today’s most popular mobile devices and platforms, protecting both business and personal data.

We foster a flat hierarchy and a friendly, collaborative environment where every team member has the opportunity to make a meaningful impact. If you're passionate about designing and building scalable distributed systems, solving complex technical challenges, and influencing the future of our platform, we'd love to hear from you!

Your Role

As a Principal Distributed Systems Engineer, you will define and drive the long-term evolution of our secure communications platform, shaping its architecture, scalability, and operational excellence. You will work across services, data platforms, infrastructure, and reliability engineering to enable substantial growth from current deployments to large-scale enterprise and government environments, while preserving the security, resilience, and certifiability that differentiate our solutions.

As part of our agile scrum teams, you will collaborate closely with Operations and C++ / Python developers, influencing architecture through measurement, operational experience, and technical leadership.

In This Role, You Will

• Define and evolve the target architecture for our next-generation secure communications platform, including event streaming, distributed data storage, caching, and high-availability services
• Design and implement scalable service and data platforms using technologies such as Kafka, ScyllaDB/Cassandra, Redis, and MariaDB
• Ensure all platform components meet stringent security and compliance requirements, including encryption, access control, hardening, and certification evidence
• Provide technical leadership and guidance to engineering teams integrating with the platform and adopting new architectural patterns
• Drive the adoption of AI-powered tools, solutions, and practices to improve operational efficiency and business outcomes

Are you the person we’re looking for?

• Are you energized by solving challenging problems and uncovering innovative solutions?
• Can you bridge the gap between deep technical expertise and clear stakeholder communication?
• Do you enjoy working in agile environments where adaptability and teamwork drive success?
• Are you someone who takes ownership, works methodically, and delivers results?
• Can you balance independent decision-making with effective cross-functional collaboration?
• Do you actively seek opportunities to expand your knowledge and continuously improve?
• Are you comfortable communicating professionally in both German and English, whether in meetings, presentations, or written communication?

Ideally, You Will Have

• Extensive experience designing, building, and operating large-scale distributed systems in production environments
• Strong expertise with event-driven and distributed service and data platforms, particularly Apache Kafka, Cassandra/ScyllaDB, Redis, and relational databases such as MariaDB/MySQL
• Hands-on experience with scalable high-availability architectures, clustering technologies, load balancing, and stateful distributed services
• Programming experience in Python and the ability to work effectively with C++ codebases.
• Strong understanding of security principles including TLS, PKI, encryption at rest, access control, and secure system design.

Beneficial

• Experience designing and operating geo-redundant, multi-site platforms
• Experience with enterprise virtualization, cloud computing, and hybrid infrastructure environments
• Experience working in Common Criteria or other certification-driven environments.
• Strong performance engineering capabilities, including load testing, capacity planning, cost modeling, observability, profiling, and system optimization.
• Experience with deployment automation and large-scale infrastructure provisioning.
• Familiarity with Infrastructure as Code practices and tools such as Terraform

What We Offer

• AI-first tooling - using the leading AI models and coding assistants (e.g. Cursor and top-tier LLMs) in our daily testing and development work, and we give you the tools and freedom to work at the frontier.
• Hybrid work model - flexibility to work from home and our Düsseldorf office.
• The opportunity to co-design work processes and shape the future of secure communication.
• A young and diverse Team.
• The chance to be part of a company that makes a real impact on global cybersecurity.
• Our product is rich in features and depth, offering endless opportunities to explore,learn, and master new skills.
• Flexible working hours to suit your personal productivity rhythm.
• Fitness reimbursement to support your well-being.

Scheduled Weekly Hours:

Compensation Hiring Base Salary Range:

Please be advised that the compensation hiring range indicated herein is provided solely as a good-faith estimate of expected base compensation for the position. The actual compensation offered will be determined at the time of hire and is contingent upon multiple factors, including but not limited to the candidate’s qualifications, relevant experience, demonstrated skills, and results of assessments conducted during the hiring process.

Bonus:

Benefits:

Disclosure of Position Status:

Disclosure of Artificial Intelligence:

We do not use artificial intelligence (AI) to screen, assess, or select applicants at any stage of our recruitment process. All applications are reviewed and evaluated by our hiring team.