Senior Software Engineer

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.

These are the core values that hold us all together:

PRACTICE CUSTOMER OBSESSION. Focus on the customer journey and work backwards. Strive to deliver customer value and continuously solve customer problems. Listen to customer feedback, act, and iterate to improve customer experience.

LEAD. Take ownership and lead through action. Think and act on behalf of the entire company to build long-term value across team boundaries.

DEVELOP AND HIRE THE BEST. Strive to raise the performance bar by continuously investing in yourself, the team and by hiring the best possible candidates for every position. Drive towards personal development and professional growth, and mentor others to raise the collective bar.

EXPECT AND ADVOCATE CHANGE. Strive to innovate and accept the inevitable change that comes with innovation. Constantly welcome new ideas and opinions. Share insights responsibly with unwavering openness, honesty, and respect. Once a path is chosen, be ready to disagree and commit to a direction.

APA/Agentic - An intelligent agentic system that not only detects application performance issues but proactively resolves them. By deeply integrating with observability stacks and leveraging Kubernetes, APA automates optimization, scaling, security, and recovery, enabling applications to run faster, cheaper, and more reliably.

Here are some of the tools we use daily:

• Languages: Python (optionally Golang)
• AI: LLMs (SaaS, self-hosted), Agents, Tools (MCP)
• Observability: LGTM Stack
• CI/CD & GitOps: GitLab CI with ArgoCD.

Responsibilities:

• Build, test, and evaluate autonomous agents using large language models (LLMs);
• Collaborate with product teams to identify high-impact use cases for AI-driven automation in observability and infrastructure;
• Design and develop tools that integrate with observability platforms (e.g., monitoring, logging, and tracing systems), codebases, and internal systems;
• Develop and maintain reliable pipelines that combine agentic workflows with traditional code-based solutions to create production-ready, deployable components;
• Stay up-to-date with advancements in LLMs, AI agents, and related tooling, and bring in best practices and new ideas to the team;

Requirements:

• Strong software engineering skills in Python.
• Hands-on experience integrating LLMs into production-grade systems.
• Startup mindset: adaptable, proactive, and comfortable with ambiguity.

What's in it for you?

• Competitive salary (€6,500 - €9,000 gross, depending on the level of experience) with equity options
• Direct impact on the product in a cutting-edge company that's reshaping cloud automation and optimization
• Collaborate with a global team of top cloud experts and innovators passionate about pushing the boundaries of Kubernetes technology
• Fast development cycles with a short feedback loop and direct customer impact
• Transparent work environment
• Focus time with minimal meetings and bureaucracy
• 10% of your time dedicated to self-improvement and personal projects.

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