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WE BUILD AI

Senior AI Engineer

WE BUILD AI

AI Engineer designing and deploying AI systems at WE BUILD AI, focusing on LLM applications and cloud services. Collaborating with clients and ensuring high-quality implementations.

Posted 7/5/2026full-timeKöln • 🇩🇪 GermanySeniorWebsite

Tech Stack

Tools & technologies
AWSAzureCloudGoogle Cloud PlatformPython

About the role

Key responsibilities & impact
  • You design and build AI systems from architecture through deployment, focusing on LLM applications, RAG, and agentic workflows.
  • You develop scalable backend services and APIs in Python, primarily using FastAPI.
  • You put cloud AI services into production, preferably on Microsoft Azure; depending on the project, AWS or GCP may also be used.
  • You ensure quality from the start through testing, evaluation, and monitoring.
  • You communicate directly with clients, translate business requirements into technical architecture, and make project decisions.

Requirements

What you’ll need
  • Fluent German and English, both written and spoken.
  • Completed degree or vocational training in computer science, mathematics, data science, or a related field.
  • Strong experience in software development with Python.
  • Practical experience deploying machine learning models and large language models (LLMs).
  • Experience with cloud computing platforms, preferably Microsoft Azure; AWS or GCP as alternatives.
  • Motivated to work independently and flexible in learning new topics and responsibilities.

Benefits

Comp & perks
  • Benefits budget of €30 per month for vouchers at 100+ providers, Urban Sports Club membership, or as a mobility allowance for the Deutschlandticket.
  • Company bike leasing via salary conversion, with savings of up to 40%.
  • Comprehensive insurance and maintenance included.
  • Flexible working hours and remote work based on personal responsibility.
  • Flat hierarchies and short decision-making paths.
  • Mentoring and honest feedback that supports your growth.
  • Regular team events, shared workations, and office dogs.
  • Free drinks and snacks at the office on Hohenzollernring.

ATS Keywords

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Hard Skills & Tools
Software DevelopmentMachine Learning Model DeploymentBackend Services DevelopmentAPI DevelopmentTesting and Evaluation
Soft Skills
Independent WorkFlexibility in LearningClient Communication