Castaigroupinc
Senior Frontend Engineer
Bulgaria · Hungary · Lithuania · Poland · Romania · Croatia
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- Role family
- Engineering
- Seniority
- Senior
- Countries
- BG, HU, LT, PL, RO, HR
- Work mode
- Remote-friendly
- First seen by hirly
- 30 Sept 2026
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the posting
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
At Cast AI, we work in a flat structure that encourages open communication and collaboration across all levels. Given our cross-team structure, you will be working with top-tier professionals and have the opportunity to shape different parts of our product.
We are looking for a person with common sense, learning agility, and personal drive who would be willing to expand their knowledge beyond frontend development and would be happy to become a full-stack engineer over time.
Requirements:
Proficiency with AI-assisted engineering, know latest best practices and tools
Experience with any JavaScript framework such as React, Angular, or Vue
At least 5 years of production-grade application experience
Strong understanding of front-end development and eagerness to transition to a full-stack role
Proficiency in TypeScript and familiarity with a design system
Here are some of the tools we use daily:
**Kimchi** (our in-house build harness), **Claude Code**
**React.js** is our go-to library for developing interfaces
**TypeScript** ensures that the application is type-safe
**Material UI** and **Shadcn/ui**, to ensure visual consistency
We use **Figma, Lovable, Claude Design** as our main tools for creating designs
Our product revolves around **Kubernetes**
Our platform currently supports **AWS**, **GCP**, and **Azure** as cloud providers
We use **REST** for public APIs
Our continuous deployment is powered by **GitLab CI** with **ArgoCD**, embracing GitOps practices
For observability and application stability tracking, we rely on **Sentry** and **Grafana**.
Responsibilities:
Manage a fast-growing codebase, ensuring it's flexible, testable, and performant
Collaborate closely with the design, engineering, product, and sales teams to bring designs to life
Contribute to the design process and actively participate in developing and maintaining our design system
Provide and seek feedback from fellow engineers and cross-functional team members to foster continuous improvement.
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
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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