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CUJO AI®

Software Engineer, Firmware

CUJO AI®
Finland · Full-time · Mid-Senior

🚀 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.

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 [email protected].

Key Skills

Ranked by relevance

linux embedded ai artificial intelligence embedded systems network security firewalls routers openwrt yocto cicd git tdd aws c
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Posted
Nov 04, 2025
Type
Full-time
Level
Mid-Senior
Location
Espoo
Company
CUJO AI®

Industries

Telecommunications

Categories

Engineering Information Technology

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