AI/ML Engineer (LLMs, AI Agents, RAG & Python) – Build Production-Ready AI Applications

Posted 4 hours ago

Worldwide

Summary

We are looking for a skilled AI/ML Engineer to help build and deploy production-ready AI applications using modern LLMs and machine learning technologies. This is a hands-on engineering role for someone who has experience building real-world AI systems—not just prototypes. Responsibilities - Design and develop AI-powered applications using Python. - Build LLM-powered solutions with OpenAI, Claude, Gemini, or open-source models. - Develop Retrieval-Augmented Generation (RAG) pipelines using vector databases such as Pinecone, Qdrant, Weaviate, or Chroma. - Build AI agents and multi-agent workflows using frameworks like LangChain, LangGraph, CrewAI, or AutoGen. - Create REST APIs with FastAPI or Flask. - Integrate AI solutions with third-party APIs and business workflows. - Deploy applications using Docker and cloud platforms (AWS, GCP, or Azure). - Optimize model performance, latency, and cost. Required Skills - Strong Python development experience. - Experience with LLMs, prompt engineering, and function calling. - Hands-on experience with LangChain, LangGraph, CrewAI, or similar frameworks. - Experience building RAG applications and semantic search systems. - Knowledge of vector databases (Pinecone, Qdrant, Weaviate, Chroma, or FAISS). - Experience with FastAPI, Docker, Git, and cloud deployment. - Understanding of embeddings, retrieval strategies, and AI system evaluation. Nice to Have - Experience with MCP (Model Context Protocol). - Experience with n8n, Make, or workflow automation. - Knowledge of speech, vision, or multimodal AI. - Experience with fine-tuning or open-source LLM deployment. What We're Looking For - Excellent problem-solving skills. - Strong communication and documentation. - Ability to write clean, maintainable, production-quality code. - Experience delivering AI products from idea to deployment. When Applying Please include: 1. A brief introduction. 2. Links to relevant GitHub repositories or portfolio. 3. Examples of AI/ML projects you've built. 4. Your experience with LLMs, RAG, and AI agents. 5. Your availability and estimated hourly rate. We're looking for someone who can become a long-term engineering partner if the collaboration goes well.

  • More than 30 hrs/week
    Hourly
  • 1-3 months
    Duration
  • Intermediate
    Experience Level
  • $19.00

    -

    $30.00

    Hourly
  • Remote Job
  • Ongoing project
    Project Type

Contract-to-hire opportunity

This lets talent know that this job could become full time.
Learn more
Skills and Expertise
Mandatory skills
Artificial Intelligence
Activity on this job
  • Proposals:20 to 50
  • Last viewed by client:2 hours ago
  • Interviewing:
    8
  • Invites sent:
    16
  • Unanswered invites:
    4
About the client
Member since May 19, 2026
  • Pakistan
    11:55 PM

Explore similar jobs on Upwork

HeyGen AI Video ExpertHourly‐ Posted 2 weeks ago
Video Production
AI Video Generation
AI Video Generator
Predictive Model
SQL
pandas
Data Science
Python
Machine Learning
Python Scikit-Learn
Deep Learning
Predictive Analytics
Data Analysis

How it works

  • Post a job icon
    Create your free profile
    Highlight your skills and experience, show your portfolio, and set your ideal pay rate.
  • Talent comes to you icon
    Work the way you want
    Apply for jobs, create easy-to-by projects, or access exclusive opportunities that come to you.
  • Payment simplified icon
    Get paid securely
    From contract to payment, we help you work safely and get paid securely.
Want to get started? Create a profile

About Upwork

  • Rating is 4.9 out of 5.
    4.9/5
    (Average rating of clients by professionals)
  • G2 2021
    #1 freelance platform
  • 49,000+
    Signed contract every week
  • $2.3B
    Freelancers earned on Upwork in 2020

Find the best freelance jobs

Growing your career is as easy as creating a free profile and finding work like this that fits your skills.

Trusted by

  • Microsoft Logo
  • Airbnb Logo
  • Bissell Logo
  • GoDaddy Logo