Jobs › Companies › Cast AI › Senior Frontend Engineer

About this Senior Frontend Engineer role at Cast AI

Cast AI · Onsite · Bulgaria; European Union; Hungary; Lithuania; Poland; Romania

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.

Ready to apply to Cast AI?
Apply to Cast AI

How this Frontend Engineer salary compares

This role pays $8,800/yr — below the typical range for Frontend Engineer roles.

$81,448 median $161,500 $230,900

Typical range $123,482–$201,150/yr, from 444 comparable Frontend Engineer listings on JobsRadar (pay annualized to USD). See Frontend Engineer salary insights →

About Cast AI

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.

See all jobs at Cast AI →

Similar jobs

Sign up for suggestions tailored to the jobs you open and the searches you save.

More jobs at Cast AI

See all jobs at Cast AI →

Apply now
🤖

Whoa — hold up

JobsRadar was built for real people having a rough time in their job search — not for automated requests. You're clicking way too fast and you're now temporarily blocked.

Come back later. If you're genuinely job hunting, we've got your back — just act like a human.

Catch your next role the second it’s posted.

Create a free account and we’ll watch the boards for you — the instant a job matches your search, it lands in your inbox or Telegram. No digging, no refreshing.

Create free account

Free forever · takes 30 seconds · already have one?

Get an edge on your job hunt.

Join our Telegram channel for the stuff that helps you land the role — salary benchmarks, the weekly market pulse, and new-feature drops. No spam, just signal.

Join the channel — it's free