Software Engineer, Firmware

🚀 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 in Budapest, Hungary. 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.    

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. 

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 [email protected].