Senior Software Engineer | Kimchi (Agent Platform Team)

About the Position

Senior Software Engineer | Kimchi (Agent Platform Team)

Bulgaria; Croatia; Estonia; Greece; Hungary; Latvia; Lithuania; Poland; Romania; Slovakia; Slovenia; Ukraine

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About the Role

We are looking for a Senior Software Engineer to join our Kimchi (Agent Platform Team). Kimchi is the AI platform inside CAST AI, providing managed capabilities for running LLMs on Kubernetes clusters. As a Senior Software Engineer, you will work on key features of our product, designing and building distributed systems that run agent fleets at scale across cloud and self-hosted environments with security at its core.

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Responsibilities

• Design and build distributed systems that run agent fleets at scale across cloud and self-hosted environments, with security at its core
• Make every agent action observable, auditable, and governable
• Develop a remote-first experience of working with agents

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Requirements

• Production experience with Go or Typescript is strongly preferred; candidates without either should demonstrate strong systems programming skills in a comparable language.
• Strong debugging, optimization, and performance-tuning skills – including query profiling, index design, and database performance tuning beyond ORM usage.
• Hands-on experience with cloud platforms (AWS, GCP, or Azure) and Kubernetes is a strong plus.
• Observability tooling (Prometheus, Grafana, OpenTelemetry), CI/CD, and DevOps practices experience.
• Startup mindset: adaptable, proactive, and comfortable with ambiguity.
• Strong English skills, both verbal and written.
• You’ve personally driven a complex project end-to-end.
• (Agent Platform) Experience in virtualization, networking, security, and Kubernetes internals is a strong plus.

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We Offer

• 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.

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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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About the Company

Kimchi is the AI platform inside CAST AI. We started by helping companies run LLMs on their own Kubernetes clusters and now we’re providing a managed variant of those same capabilities. Our infrastructure today includes multi-model inference with intelligent routing, an OpenAI-compatible API, and deployment ranging from our GPUs to your own VPC. The inference layer is the foundation, and the API is what sits in front of it as the primary channel for broadly and reliably distributing our AI services and powers our own Kimchi harness.