Senior Full Stack Python & ML Engineer for Custom AI Integration
Worldwide
Description: We specialize in building sophisticated, cutting-edge AI solutions and custom software services for our clients. We are looking for an experienced Python and Machine Learning Engineer to help us seamlessly integrate AI capabilities into production environments. If you have deep expertise in LLM orchestration, Retrieval-Augmented Generation (RAG), and building scalable ML backends, we’d love to work with you. What You Will Do AI Integration & LLM Orchestration: Design, develop, and integrate custom AI features using advanced LLM models. RAG Pipeline Development: Build and optimize Retrieval-Augmented Generation architectures to ensure highly accurate, context-aware AI outputs. Vector Database Management: Implement and manage vector databases for efficient similarity search and data retrieval. Backend Development: Write clean, scalable Python code (using frameworks like FastAPI) to serve machine learning models and connect them with front-end applications. Optimization: Evaluate, test, and tune ML models and prompts to maximize performance and minimize latency. Requirements Proven experience as a Machine Learning Engineer, AI Developer, or Python Backend Developer. Strong proficiency in Python and standard ML libraries/frameworks (e.g., PyTorch, TensorFlow, scikit-learn). Hands-on experience with LLM APIs (OpenAI, Anthropic, etc.) and AI orchestration frameworks (like LangChain or LlamaIndex). Deep understanding of RAG architectures and experience integrating vector databases (e.g., Pinecone, Weaviate, or pgvector). Experience building robust, high-performance REST APIs (FastAPI preferred). Familiarity with cloud platforms (AWS) and modern development workflows (GitHub, CI/CD). Nice to Have Understanding of full-stack concepts and how AI endpoints integrate with modern frontends (React, TypeScript). Experience with agentic workflows or advanced prompt engineering techniques. Project Scope & Budget Project Type: One-time project Budget: Fixed-price budget Estimated Timeline: 1-3 months
- Less than 30 hrs/weekHourly
- 1-3 monthsDuration
- ExpertExperience Level
$25.00
-
$50.00
Hourly- Remote Job
- Ongoing projectProject Type
Skills and Expertise
Activity on this job
- Proposals:50+
- Last viewed by client:4 days ago
- Interviewing:4
- Invites sent:4
- Unanswered invites:0
About the client
- United StatesStaten Island9:19 AM
- $20 total spent2 hires, 0 active
- EducationMid-sized company (10-99 people)
Explore similar jobs on Upwork
How it works
Create your free profileHighlight your skills and experience, show your portfolio, and set your ideal pay rate.
Work the way you wantApply for jobs, create easy-to-by projects, or access exclusive opportunities that come to you.
Get paid securelyFrom contract to payment, we help you work safely and get paid securely.
About Upwork
- 4.9/5(Average rating of clients by professionals)
- G2 2021#1 freelance platform
- 49,000+Signed contract every week
- $2.3BFreelancers 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