Staff AI Engineer — End-to-End ML in Production

Stream; Amsterdam; Hybrid; EUR 120,000 - 180,000; Full time

Benefits offered by this job

Team of exceptional engineers

OSS projects

28 days paid time off

Company equity

Pension scheme

Learning and Development budget

Relocation package

Amsterdam office

Job summary

Stream seeks a Staff AI Engineer to own model development on our AI team. You will build, fine-tune, evaluate, and ship models that run inside Stream's products, end-to-end, from dataset design through to production. As the technical owner, you will drive key decisions independently, shipping models that directly impact systems serving over a billion users.

Location: Office in Amsterdam or Remote (Europe). Occasional travel for in-person collaboration and meetups is encouraged.

Qualifications

• 5+ years of production-level Python engineering experience with shipped code.
• Hands-on ML experience, specifically with supervised fine-tuning and post-training of models.
• Familiarity with modern fine-tuning and serving toolchain (Unsloth, Fireworks, Baseten).
• Cloud experience with major providers (GCP or AWS) and IaC (Terraform).
• Experience running ML-based products in production: deployment, monitoring, retraining, and iteration.

Responsibilities

• Own the development, fine-tuning, and evaluation of in-house AI models from dataset design through production deployment.
• Run supervised fine-tuning and post-training experiments with benchmarks and evaluation harnesses.
• Build and maintain data pipelines for model training, ensuring data quality and reproducibility.
• Take models to production on Stream's serving stack, optimizing latency and cost.
• Set technical direction for undefined problem spaces and decide what to build or test.
• Collaborate with Go-based API teams and infrastructure to integrate models into products.
• Contribute to open-source projects and share work publicly through code or writing.
• Raise engineering standards through code reviews, mentorship, and best practices.

Skills

Python engineering

Machine learning experience

Fine-tuning & post-training

Cloud (GCP/AWS)

Data pipelines

Production ML ownership

Communication

Async / concurrency concepts

Tools

Unsloth

Fireworks

Baseten

Go

Job description

Stream seeks a Staff AI Engineer to own model development on our AI team. You will build, fine-tune, evaluate, and ship models that run inside Stream's products, end-to-end, from dataset design through to production. As the technical owner, you will drive key decisions independently, shipping models that directly impact systems serving over a billion users.

Location: Office in Amsterdam or Remote (Europe). Occasional travel for in-person collaboration and meetups is encouraged.