Mercura automates quoting in the construction industry with AI agents. We rank in the top 5% of YC’s W25 batch by revenue, quadrupling our revenue in just 8 weeks. After YC, we closed a 8x oversubscribed round with top-tier investors and angels.

Mercura automates quoting in the construction industry with AI agents. Our software frees sales teams from manual back-office tasks and lets them process requests in minutes instead of days.

We rank in the top 5% of YC’s W25 batch by revenue, quadrupling our revenue in just 8 weeks. After YC, we closed a 8x oversubscribed round with top-tier investors and angels, and we continue to grow massively.

We’re looking for AI Engineering Interns to help us build AI systems end-to-end. This is a fast-paced, hands-on role for candidates with high agency. At Mercura, you will collaborate closely with the best engineers and gain real-world experience in building AI applications in an industrial B2B context.

If you're excited about software engineering and AI, this is your opportunity to learn, experiment, and contribute.

What you will be working on

• Work across the full stack to build AI agents end-to-end
• Work with embeddings and fine-tune LLMs for classification and reranking
• Optimize algorithms for product search
• Apply RLHF & DPO to align LLMs with human feedback
• Build data pipelines to process large-scale unstructured data efficiently
• Make our backend scalable, stable and efficient

What we're looking for

• High agency and experience with building software and iterating quickly
• Experience with NLP, LLMs, Embeddings, ML, and AI-powered applications
• First Experience with full-stack development (TypeScript, Python, React, Next)
• Strong problem-solving capabilities and willingness to learn new technologies
• You’re excited to strive for excellence and build software in a fast-paced startup environment
• You want to work in-person in Munich with more intensity than in a 9-5 job

Software Stack: Typescript, Python, React, Next, Docker, Terraform, Postgres AI Stack: Vector databases, LLMs, Embeddings, observability & evals