Senior Software Engineer

Join Cast AI as a Senior Software Engineer - LIVE. Why Cast AI? Cast AI is the leading Application Performance Automation (APA) platform, enabling customers to cut cloud costs, improve performance, and boost productivity – automatically. Built originally for Kubernetes, Cast AI goes beyond cost and observability by delivering real-time, autonomous optimization across any cloud environment. The platform continuously analyzes workloads, rightsizes resources, and rebalances clusters without manual intervention, ensuring applications run faster, more reliably, and more efficiently. Headquartered in Miami, Florida, Cast AI has employees in more than 32 countries worldwide and supports some of the world’s most innovative teams running their applications on all major cloud, hybrid, and on-premises environments. Over 2,100 companies already rely on Cast – from BMW and Akamai to Hugging Face and NielsenIQ. What’s next? Backed by our $108M Series C, we’re doubling down on making APA the new standard for DevOps and MLOps, and everything in between. 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 behaviours 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. Seniority level Mid‑Senior level Employment type Full‑time Job function Information Technology Software Development #J-18808-Ljbffr