Senior Software Engineer, Backend Systems & Core Logic

Budapest
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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’re looking for a Senior Software Engineer to join our Cloud Engineering team. In this role, you’ll play a key part in enhancing our proprietary algorithms, developing critical backend components, and ensuring the stability and scalability of our production systems. Your work will directly impact the core functionality that powers CUJO AI’s products. 

In This Role, You Will: 

  • Design and implement high-throughput, low-latency backend systems built for performance, scalability, and real-world reliability. 
  • Drive the development of algorithm-heavy features, from concept through delivery, across multiple domains and tech stacks. 
  • Lead architecture decisions and design discussions across product areas.
  • Perform in-depth code reviews and contribute to continuous improvement of development tools and processes.
  • Collaborate closely with research, data science, and infrastructure teams to bring ideas to life.
  • Work with modern cloud infrastructure, including AWS, Apache Kafka (MSK), and NoSQL databases like DynamoDB.

Requirements

What We’re Looking For: 

  • A bachelor’s degree in computer science, Electrical Engineering, or related technical discipline. 
  • 3+ years of hands-on software engineering experience with one or more of: Python, Go, Java. 
  • Proven experience building and scaling data streaming and processing systems.
  • Strong understanding of distributed systems, microservices, and production-grade software engineering. 
  • Experience working with Kubernetes, Kafka, ECS Far-gate, and large-scale backend infrastructure.
  • Adaptability to work with multiple technologies and languages—choosing the right tool for each challenge.

What Will Make You Stand Out: 

  • Deep familiarity with SQL and NoSQL databases at high scale.
  • Experience with AWS managed services (Kinesis, Lambda, EMR, etc.) 
  • Knowledge of Infrastructure as Code (IaC) tools like Terraform or Terragrunt.

Why Join CUJO AI? 

  • Flexible Work – Hybrid or fully remote options based on location
  • Team Gatherings – Annual company-wide kickoff events and ongoing 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’re not just building technology—we’re shaping the future of secure and intelligent connectivity. If you’re a driven engineer who thrives in dynamic environments and loves building impactful systems, we’d love to hear from you. 

📅 Apply by July 15, 2025 – but don’t wait! We’ll hire as soon as we find the right person.

đź“© Apply via our recruitment portal. Questions? Email us at [email protected].

Are you the ONE? Let us know!

📅 The application period closes on the date noted above, but the position will be filled as soon as we find the right candidate, so don’t wait—apply today! 🚀

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What's in It for You?

🌟 Flexibility at Its Best

Every team decides how often to visit the office and when to work from home. Prefer to work fully remote? That is an option for certain roles, especially if you are near one of our offices in Kaunas, Helsinki, Budapest, Tel Aviv, or Vilnius.

🤝 Team Bonding

We come together at least once a year for an exciting kickoff week to connect, collaborate, and celebrate. And of course, we have team gatherings and events throughout the year.

🎓 Professional Benefits

We reward employees with training bonuses for professional growth (e.g., earning AWS certificates).

đź’° Global Rewards Program

We achieve our targets together, we are rewarded together. Everyone is included in the company’s annual bonus scheme.

✨ Referral Bonuses

We reward our team members up to €1,000 for successfully referring new employees.

✊ Our Values

We care about creating a supportive and inclusive environment. We shape the future with innovation, deliver on our commitments with integrity, and grow together through collaboration and continuous improvement.

We can only accept applications with our recruitment portal.

You have any questions about location or the role itself? Please email us at – [email protected]