Software Engineer, Firmware

Description 🚀 CUJO AI® is a leader in artificial intelligence solutions for network service providers. We use machine learning and real-world data to develop cybersecurity, device intelligence, and parental control solutions that make internet connections safer for millions of homes.

ABOUT THE ROLE:

We are looking for an experienced Software Engineer with a background in native code Linux, network and kernel development to join our high performing fast growing engineering organization. As a firmware engineer at CUJO AI you will work in a team that builds home security solutions for operator home routers (CPE-devices), build test automation systems and ports the software to different Linux based router platforms.

The compensation package is from 3000 EUR to 5000 EUR (gross), depending on your experience.

IN THIS ROLE, YOU WILL:

• Port CUJO AI’s solutions on different Linux-based CPE platforms.
• Build highly optimized software for Linux-based CPE devices.
• Develop network security, parental control and network device intelligence solutions.
• Build automation for functional, performance and resilience testing.
• Assist with test lab infrastructure planning and implementation.

Requirements

WHAT WE'RE LOOKING FOR:

Must Have:

• Minimum 5 years of experience in native code Linux development.
• Detailed knowledge of Linux operating systems architecture.
• Knowledge of building C applications in Linux.
• Excellent knowledge of IP-based protocols.
• Linux network stack knowledge.
• Knowledge of building POSIX-compliant shell scripts.
• Proficiency in working with Git and its operations (commit, rebase, submodules).

Good to Have:

• Knowledge of embedded Linux build systems: OpenWRT, Yocto.
• Expertise in building firewalls or protocol clients.
• Familiarity with developing software for embedded systems.
• Proven track record of build solutions with high stability, performance, security, maintainability, and scalability.

Bonus:

• Agile software development process experience.
• Experience in systems monitoring, performance optimization, root cause analysis, and advanced troubleshooting.
• Experience with CI/CD, TDD, and test automation frameworks.

WHAT WILL MAKE YOU STAND OUT:

• Good written and verbal communication in English.
• Ability to search for answers, learn quickly, and communicate effectively.
• Skill in explaining complex topics in simple ways as well as providing reliable information.
• A team player who takes pride in producing superior results while contributing to a high-caliber team.

WHY JOIN CUJO AI?

• Flexible Work – Hybrid or fully remote options based on your location.
• Team Gatherings – Annual company events and team activities.
• Career Growth – Training bonuses for AWS certifications and other learning opportunities.
• Performance Bonuses – Company-wide annual bonus program.
• Referral Rewards – Earn up to €1,000 for referring new hires.

At CUJO AI, we value innovation, collaboration, and continuous improvement. Join us and work on technology that makes the internet safer!

📅 Apply by November 23, 2025 – but don’t wait! We’ll hire as soon as we find the right person. 📩 Apply via our recruitment portal. Questions? Email us at careers@cujo.com.