Founding Software Engineer

Founding Software Engineer

Berlin Mitte - Onsite 5 days PW

AI Creative Tooling

Up to €130,000 + equity

Passionate about creative expression via AI? Specifically, using generative AI & natural language to create high quality motion graphics/animation, without the stress of understanding design or complex software? then read on...

Founded last year, having over 10,000 MAU already and already being profitable, the business are looking for a Founding Software Engineer to join as one of the first engineers, to shape the entire technical foundation of a company built to empower millions of people to create video...

Creative software is uniquely hard, no two users create the same way. It demands flexibility, performance, and beauty in every detail. You’ll help architect systems that make that possible.

What You’ll Do

• Work directly with the founders to design, build, and ship new product features from concept to production
• Own end-to-end fullstack development, including scalable architecture and high-performance infrastructure
• Build and optimize agentic LLM systems with tool-calling, multi-step reasoning, and MCP protocols
• Develop evaluation frameworks for LLM performance, combining automated benchmarks, A/B testing, and human-in-the-loop validation
• Optimize inference performance, cost, and latency across multiple model architectures
• Contribute to the development of a proprietary motion graphics engine
• Make foundational architectural decisions to scale the product to millions of users

Current core technologies include TypeScript, React, Next.js, PostgreSQL, GCP/AWS, and a proprietary motion graphics engine

Your experience

• Experience in the Design Tools/ Video / Creative spaces
• You’ve built things before and crave ownership
• You’re comfortable in chaos - no PMs, no roadmaps, just big problems to solve
• You believe in personal growth as a multiplier of company growth