Full Stack Engineer @ High Growth AI Startup - Rp 30.000.000 / month to Rp 40.000.000 / month (Cont[...]

Frontier InteractionsWorkFromHome, Jawa, Indonesia

30+ days ago

Job description

Full Stack Software Engineer – AI Onboarding Start-Up (Fully-Remote | UK / Europe Timezone | Competitive Salary)

We’re an early-stage AI start-up building a new category : an AI-powered onboarding agent for SaaS companies. Our product spans from Chrome extension, web automation SDK, to web application. We have strong backing from Antler, a Singapore-based VC and are beginning to scale our team.

With our MVP already live, we’re now searching for a Full Stack Engineer to join the core team – someone ambitious, technically exceptional, and ready to help build the company from the ground up. This is a 6-month contract role with a pathway into a full-time role.

Kulu’s mission is to reinvent how SaaS companies onboard their users. We’re building AI agents for web automation.

The engineering team is led by PhD founder with deep machine learning expertise. Backed by venture capital and with a clear product roadmap, we’re moving fast to shape how onboarding looks in the AI era.

Tasks

You’ll work closely with the founding team to :

Build and enhance both frontend and backend components of the product
Integrate AI features into real-time onboarding workflows
Contribute to scalable architecture, deployment, and testing
Help shape and deliver new features that push the boundaries of web automation and onboarding

Requirements

We’re looking for a full stack engineer with proven, hands-on expertise across our stack, and the ability to wear multiple hats in a fast-moving environment :

4+ years of experience building and shipping full-stack products end-to-end

Strong fundamentals in Python, TypeScript, and database design

Proven track record of shipping in fast-paced, product-driven environments

Hands-on experience integrating AI / LLM APIs into production workflows

AI-native developer : you already code daily with Cursor, Claude, Windsurf, or similar tools to move faster

Able to jump between frontend, backend, SDKs, infra, and live debugging — thriving on variety and context-switching

Super fast learner

Web automation experience (e.g., Puppeteer, Playwright, or DOM-level scripting) is a strong plus

Other key requirements :

Strong english language proficiency

Willingness to match UK timezone

Willingness to relocate to Bali in the future where we plan to establish a permanent engineering office

Tech Stack

Frontend : JavaScript / TypeScript, React, Vite (or similar). Ability to design scalable, reusable SDK components. Experience with DOM interaction and web automation (e.g., Puppeteer, Playwright).

Backend : Python (FastAPI), building and scaling production-grade APIs (REST, WebSockets). Hands-on with Supabase (Postgres) — schema design, query optimization, and data modeling for scale.

DevOps : CI / CD pipelines (Vercel, Render, GitHub Actions), automated testing, and cloud deployments.

AI : Practical experience integrating third-party AI / LLM APIs (OpenAI, Anthropic).

AI-native workflow : highly proficient with AI-powered IDEs and coding accelerators (Copilot, Cursor, Windsurf, Claude, etc.) to move fast and deliver efficiently.

Benefits

Competitive salary + a founding-level opportunity

High ownership, high trust, and the freedom to shape engineering culture

Remote-first, flexible hours

The energy, speed, and autonomy of an early-stage start-up – with early customers and strong product-market pull

Working at Kulu

We’re an early-stage startup — we ship fast, learn faster, and embrace the chaos. You’ll be joining at the ground floor, with a chance to shape both the product and the company.

We’re remote-first and flexible, but we move with urgency. High ownership, high trust, and rapid iteration.

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Ai Engineer • WorkFromHome, Jawa, Indonesia

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