Location: Berlin, Germany
Work Policy: On-site; 0 home-office days; relocation support offered
Work Experience: Minimum 3 years of experience
Language Requirement: English C1
Employment Type: Full-time
Tech Skills Required: Full Stack Development, React.js, GCP, AWS, TypeScript, PostgreSQL, Next.js
Industry: AI Motion Design/Video Technology
Positions Available: 1
Company Mission
Video is the most effective medium, but video creators waste countless hours animating seconds of content. Motion design tools like After Effects require mastering complex user interfaces, turning creative work into button-clicking hell. We're starting with motion design because it's the most painful and expensive part of video creation.
They are the first AI motion designers that create professional animations through conversation. Unlike video-gen tools, they generate code-based animations where every parameter can be fine-tuned through prompts or on-canvas editing, giving users the control of After Effects with the simplicity of Lovable.
Tasks
Partner with the founders to deliver user-centric product solutions from concept to production
Own end-to-end development of full-stack features with scalable architecture design
Build and optimize agentic LLM systems incorporating tool-calling, multi-step reasoning, and MCP protocols
Design comprehensive LLM evaluation frameworks with automated benchmarks, human-in-the-loop validation, and A/B testing
Optimize LLM inference performance, cost efficiency, and latency across multiple model architectures
Develop a high-performance motion graphics engine
Drive architectural decisions that support scalable growth to millions of users
Requirements
Tech Stack: Their technology choices evolve with their needs. Current core technologies include TypeScript, React.js, Next.js, PostgreSQL, GCP/AWS, and their proprietary motion graphics engine. They prioritize learning velocity, end-to-end delivery, and adopt new languages or frameworks when they best serve their users and product goals.
What Makes You a Great Fit
You're hungry. Not just ambitious, but obsessed with building something massive
You're entrepreneurial. You've built things before and demand ownership
You thrive in ambiguity. No roadmaps, no PMs, just problems to solve
You have a growth mindset. They're small today but building something huge. To grow the company, each of us needs to grow personally
You work like an athlete. High performance, consistent improvement, whatever it takes to win
You want to work in-person in Berlin (we help you relocate if needed)
They hire for slope, not intercept. They don't care about credentials; they care about trajectory
Benefits
They're building this team like Real Madrid: small, elite, with each person being a superstar. They believe they can reach a $100M ARR with less than 20 people. As a founding engineer, you'll have:
Life-changing equity stake
Above-market salary
Build a product used by thousands daily
The chance to redefine how millions of users create video
This is a YC-backed founding role with real equity; build a consumer AI product from scratch; direct influence on tech & culture; competitive comp; work closely with visionary founders in Berlin.