Job Title: Machine Learning Engineer
Location: Germany (Remote or Hybrid – Must be based in Germany or EU)
Industry: Fintech
Type: Freelance / Contract (6–12 months, with high potential for extension)
Rate: €900/day
About the Company:
Our client is a fast-growing fintech scale-up based in Europe, building AI-powered financial solutions that help individuals and businesses make smarter money decisions. Backed by leading investors, they’re expanding their ML team to accelerate product innovation—and they’re looking for a sharp Machine Learning Engineer to join on a freelance contract basis.
The Role:
As a Machine Learning Engineer, you’ll work closely with product and engineering teams to design, develop, and deploy machine learning models into production. This is a hands-on role with real business impact, helping shape core financial intelligence features.
Key responsibilities:
- Build and maintain machine learning models for risk scoring, fraud detection, personalisation, and other fintech use cases
- Pre-process, clean, and transform large datasets using modern data pipelines
- Deploy models into production environments using MLOps best practices
- Collaborate with data engineers, product managers, and software engineers
- Contribute to model monitoring, performance tuning, and retraining workflows
- Help design the overall ML architecture and experimentation framework
Tech Stack:
Experience with some or most of the following is preferred:
- Languages: Python (NumPy, pandas, scikit-learn, PyTorch, TensorFlow)
- Tools: MLflow, Airflow, Docker, Weights & Biases
- Infra: AWS, SageMaker, GCP Vertex AI, Kubernetes
- Data Tools: Snowflake, BigQuery, SQL, dbt
- MLOps: CI/CD pipelines, model versioning, monitoring tools
Requirements:
- 5+ years of experience in applied Machine Learning
- Experience working as a contractor or freelancer (or very comfortable doing so)
- Strong understanding of model deployment and MLOps
- Comfortable working independently and collaborating remotely
- Fluent in English (German is a bonus)
- Based in Germany or EU with right to work as a contractor
Why Join?
- Work with one of Germany’s most innovative fintechs
- Build real-world ML systems that impact thousands of users
- Flexible schedule & remote-first culture
- Long-term freelance opportunity (contract extensions likely)
- Supportive and highly technical team
- Fast onboarding process
Please contact info@optimistech.co to learn more about this amazing opportunity!
