Senior Machine Learning Engineer – Generative AI

Permanent employee, Full-time · Remote, Berlin, Hybrid

Your mission

Own end-to-end ML workflows: data ingestion, feature engineering, training, evaluation & production deployment
Deep-dive into at least one core application domain: (1) price prediction; (2) two-sided market design (ranking / recommendations); (3) agentic workflows using state of the art LLMs; from prototype to robust production services.
Establish and enforce LLMops best practices: design reproducible prompt-engineering workflows, manage model/version tracking, automate evaluation (e.g. evals frameworks), monitor latency/cost, and refine prompts based on performance metrics.
Set up performance tracking, alerting and automated evaluation to ensure model health in production.
Collaborate across product, engineering and data science to translate business needs into technical solutions.
Spar with peers in the AI team and contribute to code reviews, best practices and tooling for reproducible, production-grade ML.

Your profile

5+ years of ML engineering experience, including ≥ 1 year working with LLMs
Strong Python skills and production-grade code practices (testing, CI/CD)
Deep expertise in at least one of:
- Deep learning (PyTorch, Transformers)
- Ranking / matching algorithms
- LLMops (RAG, evals, fine-tuning, agentic workflows)
Proven track record deploying containerized services at scale (Docker, Kubernetes)
Clear communicator who bridges data science, product and engineering
Master's/PhD in ML, CS, Statistics or related
Passion for the craft of ML and deep learning: you love learning and keep up-to-date with the state of the art.
Pride in writing clean, maintainable code.
The customer's interest is at the center of everything you do, and you always think in their perspective.

Why us?

Shape a product that solves real-life problems in the construction industry
Work in an open-minded, collaborative, dynamic, and international team
Fully remote team and work culture
Freedom in your working hours. It's the results that count.
Company off-sites and regular team events (offline and online)
Flexible working conditions with the possibility to do workations
Competitive compensation, a permanent contract, and modern work equipment
Open feedback culture with regular 1-on-1s

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About us

Cosuno – Revolutionizing construction through technology.
We are Cosuno – a fast-growing tech startup that is making the construction industry more efficient and transparent with our digital platform for tenders and procurement processes. Our goal: to solve the most complex challenges in the industry with innovation and simplicity.

Why Cosuno?
Artificial intelligence is the key to our solution: it analyzes millions of price data points and helps construction companies create precise and efficient bids. This not only saves our customers time but also helps them avoid unnecessary costs.
But for us, it's not just about technology – it's about the people who drive it. At Cosuno, you will work with creative minds who are reshaping the construction industry. We believe in diversity because we know that the best ideas come from different perspectives. An integrative and inclusive work environment is a matter of course for us.

Join us – Build the future of construction.

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Your application!

We appreciate your interest in Cosuno Ventures GmbH. Please fill in the following short form. Should you have any difficulties in uploading your files, please contact us by mail at people@cosuno.de.