Senior Full Stack Developer (TypeScript) / Senior AI Engineer – LLMs & Agents

Cosuno | Senior Full Stack Developer (TypeScript) / Senior AI Engineer – LLMs & Agents | Remote (EU) / Berlin | Full-time | https://www.cosuno.com
Cosuno is a fast-growing tech startup reshaping the construction industry with a digital platform for procurement. We use AI to analyze millions of price points, helping construction companies create bids based on real market data. We're looking to expand our team with creative minds who want to solve real-world problems and impact a massive industry. We are an open-minded, collaborative, and international team.
Currently, we're hiring for two key senior roles:
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Senior Full Stack Developer (TypeScript)
Location: Remote (EU) / Berlin
Stack: TypeScript, React, Node.js, Cypress, Kubernetes, AWS
Mission: Take full ownership of features, shaping both the frontend and backend of our product.

You'll have the responsibility to extend and build upon our platform to make it more valuable, reliable, and maintainable. We value a trunk-based development workflow with daily releases, comprehensive end-to-end testing, and a solid CI/CD pipeline.
You have: 5+ years of hands-on engineering experience, substantial expertise in JavaScript/TypeScript, and experience with Node.js (React is a plus).
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Senior AI Engineer – LLMs & Agents
Location: Remote (EU) / Berlin
Mission: You will build agentic workflows using state-of-the-art LLMs. Lead the technical development of an agent that helps construction professionals process, improve, and validate complex construction documents. A key part of your role will be establishing and enforcing MLOps and LLMops best practices.
You have: 5+ years of engineering experience, with at least one year working with LLMs.

You possess strong Python skills, a proven track record of deploying containerized services (Docker, Kubernetes), and deep expertise in at least one of the following: deep learning (PyTorch, Transformers), ranking/matching algorithms, or LLMops (RAG, evals, fine-tuning).
Interested? To apply and for more detailed information, please see the full job descriptions on our careers page: https://www.cosuno.com/en/company