Freelance Senior Python and langchain developer Ref. 006073

Morocco
Full Time
Experienced

About the Role

 Weʼre looking for an experienced Senior Python Backend Developer who already worked with the langchain framework . Youʼll be responsible for designing, developing, and optimizing backend services, APIs, and integrations to support scalable applications.

This role is ideal for someone with deep expertise in FastAPI, langchain, MongoDB, and Python 3.11, along with a solid understanding of the agent programming. Youʼll work collaboratively to build a reliable, maintainable, and scalable chatbot application while ensuring top-notch security and performance.

Contract Details

  •  Duration: 3 months full time
  •  Location: Fully remote
  •  Rate: Based on experience
  •  Start Date: 2d June 2025

 Key Responsibilities

  • API Development with FastAPI

 Design and build efficient API endpoints.

 Implement API Gateway and request parallelization.

  • Database Optimization (MongoDB)

 Write optimized queries using MongoDBʼs official Python library.

  • Chatbot Architecture & Development

 Design, implement, and maintain scalable and secure chatbot services.

  • Testing & Security

 Write unit and integration tests to ensure code reliability.

  • Scalability & Performance

 Optimize database performance and API response times.

 Implement caching and request parallelization strategies.

Required Skills & Qualifications

  • Technical Expertise

 Experience: 5+ years as a Python backend developer.

 Python: Strong experience with Python 3.11+ and the langchain framework.

 FastAPI: In-depth knowledge of API development, authentication, and parallelized requests.

 MongoDB: Strong experience with schema design, query optimization, and best practices.

 Security: Strong understanding of secure coding practices.

 Version Control: Proficiency in Git and Git workflows.

  • Language & Location Requirements

 Fluent in French, good level in technical English.

 Timezone: Paris, France.

  • Soft Skills & Work Ethic

Commitment to writing clean, maintainable, and well-documented code.

Strong collaboration skills to work with data scientists, developers, product managers, and stakeholders

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