Senior Software Engineer - Live

Location: Bulgaria; Greece; Lithuania; Poland; Romania

Department: Technology

Why Cast AI?

Cast AI is an automation platform that operates cloud-native and AI infrastructure at scale. By embedding autonomous decision-making directly into Kubernetes and cloud environments, Cast AI continuously optimizes performance, reliability, and efficiency in production.

The old way doesn't work. As Kubernetes and AI environments grow, manual decisions don’t. Cast AI replaces tickets, alerts, and manual tuning with continuous automation that adapts infrastructure as conditions change. Efficiency and cost savings follow naturally from that automation.

Over 2,100 companies already rely on Cast AI, including Akamai, BMW, Cisco, FICO, HuggingFace, NielsenIQ, Swisscom, and TGS.

Global team, diverse perspectives
We're headquartered in Miami, but our impact is international. We take a global and intentional approach to diversity. Today, Cast AI operates across 34 countries spanning Europe, North America, Latin America, and APAC, bringing a wide range of perspectives into how we build and lead. 

Unicorn momentum
In January 2026, we achieved unicorn status with a strategic investment from Pacific Alliance Ventures, the corporate venture arm of Shinsegae Group (a $50+ billion Korean conglomerate). Our valuation now exceeds $1 billion, and we're just getting started.

Join us as we build the future of autonomous infrastructure.

About the role

We're looking for a highly skilled senior software engineer with deep expertise in containers and systems programming to join the LIVE team. The LIVE Team develops and maintains critical infrastructure for container live migrations, ensuring that our platform can seamlessly transfer workloads while maintaining application availability. This involves a blend of software engineering, knowledge of distributed systems, expertise in containerization technology, networking and a deep understanding of Kubernetes.

Requirements:

• Strong software engineering skills with experience in distributed systems and backend development (ideally in GoLang, but a willingness to transition to it is sufficient).
• Deep knowledge of low-level Linux details process level and below including networking and filesystems.
• Experience with network stack, very comfortable with OSI layers, Software Defined Networks.
• Proficient in debugging, optimization, and performance-tuning of applications.
• Experience with IaaS building blocks in any of AWS, Azure, or GCP.
• Experience with low-level networking (NAT, iptables, conntrack, etc.) is a huge plus.
• Deep Kubernetes experience is a huge plus, as a big part of the role is hacking Kubernetes to do what it wasn't intended to do.
• Strong English language skills, both verbal and written.
• A proactive problem-solving mindset, always aiming for a "yes, we can" attitude.
• Located in any European country within the GMT +0 to GMT +3 time zones and comfortable working fully remote.

Responsibilities:

• Design, develop, and implement live migration features that ensure minimal downtime and seamless transitions for stateful workloads within Kubernetes.
• Collaborate with cross-functional teams.
• Troubleshoot and debug issues, ensuring high availability and reliability of the platform.
• Document design decisions, processes, and system behaviors to facilitate knowledge sharing within the team.
• Stay up-to-date with industry best practices, tools, and techniques.
• Actively contribute to the continuous improvement of our systems and processes.
• Participate in code reviews and provide constructive feedback to team members to enhance the overall quality of the codebase.

What’s in it for you?

• Competitive salary (€6,500 - €9,000 gross, depending on the level of experience)
• Enjoy a flexible, remote-first global environment.
• Collaborate with a global team of cloud experts and innovators, passionate about pushing the boundaries of Kubernetes technology.
• Equity options.
• Get quick feedback with a fast-paced workflow. Most feature projects are completed in 1 to 4 weeks.
• Spend 10% of your work time on personal projects or self-improvement. 
• Learning budget for professional and personal development - including access to international conferences and courses that elevate your skills.
• Annual hackathon to spark new ideas and strengthen team bonds.
• Team-building budget and company events to connect with your colleagues.
• Equipment budget to ensure you have everything you need.
• Extra days off to help maintain a healthy work-life balance.

Hiring process

• Screening call with Recruiter
• Hiring Manager interview
• Technical interview (system design)
• Live coding
• Culture Check interview with an executive

*As part of our standard hiring process, we would like to inform you that a background check may be conducted at the final stage of recruitment through our third-party provider, Checkr.
*Please note that Cast AI does not provide any form of visa sponsorship/work permit.

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