Founding Full-Stack Engineer (Remote)

Founding Full-Stack Engineer

Company Overview

Contextual

32 followers

Technology, Information and Internet

2-10 employees

1 on LinkedIn

Job Summary

TL;DR - We're building AI that works directly on live web applications to generate production-quality designs. We just raised a $1.8M pre-seed and are now building out our founding team. You'll build the full stack infrastructure that makes this possible—from browser-based systems to intelligent code generation. Unique “founding team” opportunity with significant equity.

The Gap We're Filling

Right now there are two types of AI tools: Figma/Lovable/v0: Create designs from scratch. Can't touch your actual product. Cursor: Requires repo access. 90% of product stakeholders don't have and shouldn't have it. The massive gap: No AI can actually iterate on real products—understand your live app, analyze design context, and generate designs that match your product's language. PMs are stuck waiting days for designers to add simple components.

We're building the tool that finally lets non-technical product teams directly edit their live product's front-end. No repo access. No starting from scratch. Just: enter your URL, describe what you need, get production-ready designs.

Here’s a 2m demo video: https://www.loom.com/share/f9d40a3e1a25419292c4d1c1b0497985

Why This Is Genuinely Hard

You're not building a typical SaaS app. You're building infrastructure that operates on live web applications—understanding design systems, safely manipulating DOM structure, and generating code that engineers actually want to implement.

This requires deep work across the entire stack: browser-based systems, real-time interaction, intelligent extraction and injection, framework-aware code generation, and rock-solid reliability.

The bar: Technical infrastructure so robust that non-technical users can safely work with production applications.

Key Responsibilities

In one sentence: Build the full stack systems that enable AI to work directly on live web applications.

• Implement and maintain features across the full stack: frontend, backend, and infrastructure
• Own systems end-to-end: architecture, implementation, deployment, and iteration
• Build browser-based infrastructure for interacting with live web applications
• Design intelligent extraction and code generation systems
• Collaborate with the AI engineer to integrate capabilities into intuitive user experiences
• Drive technical decisions about architecture, scalability, and reliability

Success in 6 months: Users can safely work with their production applications through our interface, and the code we generate is something engineers actually want to implement.

Requirements / Qualifications

You're a great fit if:

• You've built systems that were genuinely hard, not just feature work: 5+ years shipping full stack products with real users and real scale
• Experience with complex systems—you've built infrastructure that operates on things you don't control, or developer tools that work with arbitrary codebases
• Strong systems thinking—you know when abstractions break and can debug "this shouldn't be possible" problems
• Product-minded engineering—you make good technical decisions, knowing when to prioritize speed and when to invest in foundations

Technical requirements:

• Frontend: Strong experience with TypeScript and React—you understand modern web application architecture
• Backend: Proficiency with Node.js, experience building APIs and backend systems
• Full stack fluency: You can move across the entire stack and own features end-to-end
• Cloud platforms: Production experience with AWS or GCP
• Systems design: Understanding of scalability, performance trade-offs, and architecture decisions

Preferred Qualifications

Bonus points:

• Experience with browser automation or developer tools
• Built systems that analyze or generate code
• Worked on platforms that integrate with third-party applications
• Experience with real-time systems (WebSockets, streaming)

Location

Berlin, Germany, Remote: true

Employment Type

Full Time

Salary & Benefits

Compensation: €100k-€120k + significant “founding-team-level” equity

Application Process

How to Apply

• Submit: A 5-10 minute screen recording walking us through your most technically challenging project. Show us the hard problems you solved and how you approached them.
• Your resume/LinkedIn

Why video? We're building systems that solve genuinely hard technical problems. We want to see how you approach complexity.