Senior Software Engineer | Kimchi Studio

Cast AI; Polska; Remote; PLN 318,000 - 441,000; Full time

Benefits offered by this job

Equity options

Learning budget

Annual hackathon

Remote-first culture

Equipment budget

Job summary

Cast AI is hiring for Kimchi Studio, a desktop app that unites autonomous coding agents, model orchestration, and your entire toolchain into one collaborative UI. You’ll own features end to end: design, implementation, testing, production rollout.

Most projects ship in 1–4 weeks, and you’ll work with product and other engineering teams on problems without textbook solutions. You’re a full-stack engineer with TypeScript for Electron/React UI and Node services, and Go for the backend, with strong

Qualifications

• Experience shipping features end-to-end from idea to shipped product.
• Proficient in TypeScript for Electron/React UI and Node services, plus Go for backend.
• Strong debugging and performance profiling to optimize apps.

Responsibilities

• Own features end to end: design, implementation, testing, production rollout.
• Collaborate with product and engineering teams on complex problems.
• Focus on UX, speed, and polish in a desktop app context.

Skills

Full-stack engineer

TypeScript

Go

Electron/React

Tools

Git

Job description

Why Kimchi?
Great models are raw ingredients. Kimchi is what happens when you ferment them with good engineering. We started inside CAST AI helping companies run LLMs on their own Kubernetes clusters; today we run our own coding harness on any LLM you pick.
Kimchi Studio
Studio is where your team's agents work together: a desktop app that brings autonomous coding agents, model orchestration, and your entire toolchain into one collaborative UI. Multiple agents on separate branches side by side with native git worktree support. Every agent action visible, diffable,
and undoable. Local first on your machine, remote sessions when you need them.
You’ll own features end to end: design, implementation, testing, production rollout. Most projects ship in 1-4 weeks. You’ll work directly with product and other engineering teams on problems that don’t have textbook solutions.
You might be a fit if…

• You’ve personally driven a complex product feature from idea to shipped, and you can tell that story with receipts.
• You’re a full-stack engineer: TypeScript where the product lives (Electron/React UI, Node services) and Go where the backend lives. Strong in one, ready to go deep in the other, and honest about which is which.
• You have deep debugging and performance instincts: when the app janks or a query slows down, you find the cause through query profiles and flame graphs.
• You care about UX, speed, and polish. In a desktop app every millisecond is visible, and you push back when something feels wrong.

Bonus: shipping Electron apps at scale (updates, code signing, multi-platform builds), Kubernetes internals, or building your own AI workflows and harnesses at home.
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 (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.