Senior C++ Engineer

Who We Are
SECLOUS stands for innovation, trust and security in our interconnected world. Instead of new security products, we deliver the needed capabilities to build more secure products – without compromising efficiency, interoperability or control. Our patented Non-Visible Data (NVD) technology offers protection invisible to users and effortless for developers.

Our team combines technical expertise and interpersonal skills. This has earned us numerous awards and a place among Germany's most innovative cyber security companies.

non-visible data. visible trust.

What You Can Expect
In this role, you'll not only help shape the foundation of our NVD platform but also ensure that our development workflows are continuously evolving – with stability and innovation going hand in hand.
Innovation Development:
You will actively shape the future of our NVD Core and related libraries by designing and implementing new features. Together with the team, you'll translate complex requirements into robust and modern C++ solutions.

Clean Code:
Maintaining and improving existing code is just as important to us as innovation. You'll optimize performance, extend APIs, and ensure that our codebase remains clean, efficient, and backward-compatible.

Network Expertise:
Whether it's TCP, UDP, HTTP, MQTT, or SMTP – you'll work hands-on with network-heavy modules and custom protocol implementations. Ensuring stability under load and solving low-level socket issues will be part of your challenges.

Quality Focus:
Quality is key. You'll write and maintain unit and integration tests using GoogleTest/GoogleMock, and bring performance bottlenecks to light with profiling and debugging. Introducing new tools is encouraged.

Collaboration:
We believe in strong team dynamics. You'll take part in design reviews and architectural discussions, contributing your perspective while learning from others.

YOUR PROFILE
You should bring most of the following with you:
Modern C++ Expertise

• 5+ years of experience with modern C++17/20: templates, metaprogramming, move semantics, concurrency
• Strong grasp of object-oriented and generic design patterns

Library Development

• Proven track record designing and implementing new features in large C++ codebases
• Deep debugging and profiling skills (memory, threading, performance bottlenecks)

Version Control & CI/CD

• Daily use of Git; GitLab merge request workflows and GitLab CI/CD pipelines
• Familiarity with linters, static analysis, and code-quality checks integrated into CI

Networking Fundamentals

• Solid understanding of TCP, UDP; familiarity with higher-level protocols (HTTP, MQTT, SMTP)
• Ability to work with custom protocol implementations

Collaboration & Process

• Experience operating within an Agile/Scrum team
• Strong communication skills for design discussions and code reviews

No "must have", but nice and helpful:

• CMake proficiency for writing and refactoring build scripts
• Unit and mock testing with GoogleTest/GoogleMock
• IT-security and cryptography knowledge (willingness to learn advanced concepts)
• Performance-profiling tools (Valgrind, perf, VTune) or static analysis frameworks
• Experience with packaging tools (Conan)

Profund knowledge in Malbolge

YOU WILL BE A PERFECT FIT IF...

• You bring commitment and passion for innovative technology and continuous learning
• You are conscientious and have high quality standards
• You have strong communication skills and the ability to work both in a team and independently
• You speak fluent English - knowledge of German is a plus
• You think like us - outside the box

WHY IS SECLOUS THE RIGHT PLACE FOR YOU
Impact & purpose:
Together we are shaping the future of data use - through innovative solutions that combine freedom and control over data and create real added value for society.

Commitment & development:
Your thirst for knowledge is just right with us With us, you will gain a deep insight into our groundbreaking non-visible data technology and have the opportunity to continuously develop yourself. We offer you exciting projects in which you can grow.

Culture & communication:
For us, it's not just the code that counts, but also teamwork at eye level. We attach great importance to respectful interaction and clear communication.

Hybrid Model:
For our projects and our collaboration, we work in a hybrid model (two team office days per week) – that's why we are looking for team members who already live in Munich or the surrounding area or are open to relocating.

Benefits & flexibility:
we support you with fair remuneration, EGYM Wellpass, Guud Card, bike leasing, high flexibility, hybrid work and workation.

DOES THAT SOUND LIKE YOU ?
If you want to play an active role in making our future brighter, safer and less dependent on others, then we look forward to getting to know you

Send your informative CV to

We look forward to hearing from you
DIVERSITY ENRICHES - AND WE LIVE IT
We value different perspectives, experiences and backgrounds - regardless of origin, religion, gender, sexual identity, age, physical and mental abilities, family background or other personal characteristics. Our goal is an environment in which everyone feels welcome and valued. We therefore explicitly encourage you to apply to us. We are all unique – show us who you are and what makes you special.