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Python Backend Engineer - AI & ML Infrastructure

OSF Digital
Department:Android Developer
Type:REMOTE
Region:EU
Location:Romania
Experience:Mid-Senior level
Estimated Salary:€30,000 - €60,000
Skills:
PYTHONFASTAPIPOSTGRESMONGODBMILVUSDOCKERKUBERNETESAWSCI/CDAIRFLOWOPENAI APISLLM INTEGRATIONSVECTOR SEARCH SYSTEMS
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Job Description

Posted on: December 31, 2025

Are you passionate about building scalable backend systems that power cutting-edge AI solutions? Join us as a Python Backend Engineer and help shape the future of AI-driven investment analysis.

What you’ll do:

  • Design, implement, and maintain backend services for ML/LLM features using Python and FastAPI.
  • Optimize and manage databases (Postgres, MongoDB, Milvus) for high-performance storage.
  • Enhance observability and reliability for distributed, asynchronous workloads.
  • Integrate with OpenAI APIs and agentic frameworks to deliver advanced AI capabilities.
  • Collaborate with data scientists and ML engineers, mentor peers and drive architectural decisions.

Tech stack: Python (async/await, Pydantic), FastAPI, Docker, Kubernetes, AWS (EKS, ECS, S3), CI/CD (GitHub Actions), Airflow, Milvus.

What we’re looking for:

  • Strong experience in backend engineering and asynchronous Python.
  • Knowledge of RESTful APIs, distributed systems and containerization.
  • Familiarity with LLM integrations and vector search systems.
  • Excellent communication skills and English proficiency.

Nice to have: Experience with observability tools (Prometheus, Grafana), OpenAI Agents SDK, and LLM prompt engineering.

Ready to build robust, scalable systems that power AI innovation?

Apply now and be part of a team that’s redefining investment technology!

Originally posted on LinkedIn

Apply now

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