Senior AI Agent Developer (LangGraph, OpenAI, MCP, n8n)

Posted 3 days ago

Worldwide

Summary

We're looking for an experienced AI Agent Developer to help us build production-ready AI agents and workflow automations. This is not a simple chatbot project. We're building autonomous AI systems capable of planning, tool calling, memory management, document processing, and integration with external business applications. The ideal candidate has experience building reliable LLM applications using modern agent frameworks and understands how to move beyond prompt engineering into scalable AI systems. This is a long-term opportunity with ongoing work. Responsibilities - Design and develop AI agents using GPT-4.x, Claude, or Gemini - Build multi-agent workflows using LangGraph, CrewAI, AutoGen, or similar frameworks - Implement Retrieval-Augmented Generation (RAG) - Connect AI agents with business APIs and databases - Build custom tools and function calling workflows - Integrate MCP (Model Context Protocol) servers - Develop automation workflows using n8n - Create memory systems for long-running conversations - Optimize prompts and agent behavior - Debug AI hallucinations and improve reliability - Deploy production-ready AI applications - Write clean, maintainable Python code - Participate in architecture discussions

  • More than 30 hrs/week
    Hourly
  • 3-6 months
    Duration
  • Expert
    Experience Level
  • $15.00

    -

    $35.00

    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
AI Agent Development
AI App Development
Activity on this job
  • Proposals:50+
  • Last viewed by client:2 days ago
  • Interviewing:
    3
  • Invites sent:
    4
  • Unanswered invites:
    1
About the client
Member since Sep 26, 2025
  • COL
    Valledupar5:03 PM
  • $357 total spent
    4 hires, 0 active
  • 4 hours

Explore similar jobs on Upwork

Shopify Website Development for Arc GISHourly‐ Posted 1 month ago
HTML
Web Development
Shopify
Shopify Templates
Create Engaging Ads for SaaS Web AppFixed-price‐ Posted 2 weeks ago
HTML5
JavaScript
Web Design
Graphic Design

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