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Senior Software Engineer - Live

Castai Group Inc.

Job Overview

Location

Bulgaria; European Union; Lithuania; Poland; Romania

Job Type

Full-time

Full Job Description

📋 Description

• Join Cast AI, a rapidly growing unicorn company revolutionizing cloud-native and AI infrastructure. We empower over 2,100 companies, including industry giants like Akamai, BMW, and HuggingFace, to achieve unparalleled performance, reliability, and efficiency through autonomous decision-making embedded directly into Kubernetes and cloud environments.
• As a Senior Software Engineer on the LIVE team, you will be at the forefront of innovation, developing and maintaining the critical infrastructure that enables seamless container live migrations. This is a unique opportunity to work on cutting-edge technology that ensures minimal downtime and maintains application availability for our clients' most demanding workloads.
• Your primary focus will be on designing, developing, and implementing sophisticated live migration features. This involves a deep dive into the intricacies of containerization, distributed systems, and Kubernetes, pushing the boundaries of what's possible to achieve seamless workload transfers.
• You will be instrumental in ensuring the platform's ability to transfer stateful workloads with zero interruption, a complex challenge requiring a profound understanding of system internals and networking.
• This role demands a blend of strong software engineering principles, a deep understanding of systems programming, and hands-on experience with containerization technologies.
• You will collaborate closely with cross-functional teams, including product managers, other engineering teams, and SREs, to deliver robust and scalable solutions.
• Troubleshooting and debugging complex issues will be a significant part of your responsibilities. You'll be expected to diagnose and resolve problems related to live migration, ensuring the highest levels of platform availability and reliability.
• Documentation is key to our success. You will be responsible for meticulously documenting design decisions, implementation details, and system behaviors to foster knowledge sharing and maintain a high-quality codebase.
• Staying abreast of the latest advancements in cloud-native technologies, container orchestration, and systems programming is crucial. You will actively research and integrate industry best practices, tools, and techniques into our development process.
• We encourage a culture of continuous improvement. You will actively contribute to refining our systems, processes, and tooling to enhance efficiency and effectiveness.
• Code reviews are a vital part of our engineering culture. You will participate actively, providing constructive feedback to your peers and receiving it in turn, ultimately elevating the quality and maintainability of our software.
• This role offers the chance to "hack" Kubernetes, leveraging its capabilities in ways it wasn't originally intended to solve complex problems, a testament to the innovative spirit at Cast AI.
• You will be working with a global team, contributing to a product that has a significant international impact, operating across 34 countries.
• The LIVE team is central to Cast AI's mission of providing autonomous infrastructure, and your contributions will directly impact the reliability and efficiency of our clients' cloud environments.
• We value a proactive problem-solving mindset and a "yes, we can" attitude, encouraging you to tackle challenges head-on and find innovative solutions.
• You will be part of a fast-paced environment where feature projects are typically completed within 1 to 4 weeks, allowing for rapid iteration and tangible impact.
• This role is fully remote, offering flexibility and the opportunity to work from anywhere within the specified European time zones.
• You will have the opportunity to work with GoLang, or transition to it, contributing to a modern and efficient technology stack.
• Your work will involve deep dives into Linux internals, including process management, networking, and file systems, providing a rich learning and development experience.
• You will gain extensive experience with IaaS building blocks across major cloud providers like AWS, Azure, and GCP.
• The role involves working with low-level networking concepts such as NAT, iptables, and conntrack, further deepening your systems expertise.
• You will be a key player in ensuring the seamless operation of our live migration technology, a core differentiator for Cast AI.
• Your efforts will directly contribute to the cost savings and efficiency gains our customers achieve through Cast AI's autonomous infrastructure solutions.
• This is an opportunity to join a company that has achieved unicorn status and is poised for significant future growth, offering a dynamic and rewarding career path.

🎯 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 the network stack, very comfortable with OSI layers and Software Defined Networks.
• Proficient in debugging, optimization, and performance-tuning of applications.
• Experience with IaaS building blocks in any of AWS, Azure, or GCP.
• 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.
• Located in any European country within the GMT +0 to GMT +3 time zones and comfortable working fully remote.

🏖️ Benefits

• Competitive salary (€6,500 - €9,000 gross, depending on the level of experience).
• Flexible, remote-first global environment.
• Equity options.
• 10% of your work time dedicated to personal projects or self-improvement.
• Learning budget for professional and personal development, including access to international conferences and courses.
• Equipment budget to ensure you have everything you need.

Skills & Technologies

AWS

Azure

GCP

Kubernetes

Senior

Remote

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Castai Group Inc.

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About Castai Group Inc.

Castai Group Inc. provides specialized investment and strategic advisory services to middle-market companies across North America. The firm focuses on mergers and acquisitions, private placements, restructuring, and growth capital transactions for businesses in manufacturing, consumer goods, and business services sectors. Headquartered in New York, Castai operates a lean, senior-led model that emphasizes direct principal involvement, rigorous financial analysis, and long-term client partnerships. Its principals have executed more than 200 transactions totaling over $10 billion in aggregate value since inception.

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