Senior Python AI Engineer

**About us:** Talent has no borders. Proxify's mission is to connect top developers around the world with the opportunities they deserve. So, it doesn't matter where you are; we are here to help you fast\-track your independent career in the right direction. Since our launch, Proxify's developers have successfully worked with 1200\+ happy clients to build their products and growth features. 5000\+ talented developers trust Proxify and its network to fulfill their dreams and objectives. Proxify is shaped by a global network of supportive, talented developers interested in remote full\-time jobs. Our Glassdoor (4\.5/5\) and Trustpilot (4\.8/5\) ratings reflect the trust developers place in us and our commitment to our members' success. **The Role:** We are looking for a **Senior Python AI Engineer** to join our fast\-growing Network, who will design and develop backend systems and APIs for AI\-powered applications. You will play a key role in designing and building scalable backend systems and APIs, collaborating closely with cross\-functional teams to shape the future of data\-driven products across various platforms. **What we are looking for:** * Strong proficiency in Python (5\+ years), including modern frameworks (FastAPI, Flask, or Django). * Deep learning frameworks (PyTorch, TensorFlow) for custom modeling beyond LLM APIs. * Experience with large language models (LLMs) such as GPT, Gemini, LLaMA, or similar. * Experience with prototyping tools: Streamlit, Gradio * Solid experience designing RESTful APIs and microservice architectures. * Strong backend development expertise, including databases (SQL/NoSQL). * Experience with version control (Git) and CI/CD workflows. * Hands\-on experience with containerization (Docker, ideally Kubernetes). * Familiarity with cloud platforms (AWS, Azure, or GCP) is a plus. * Understanding of security best practices for handling sensitive data. * Strong problem\-solving skills to address complex challenges and performance bottlenecks. * Excellent technical communication skills to collaborate effectively across teams and explain technical concepts to non\-technical stakeholders. * Ability to work independently while aligning with broader team goals. * Intermediate\-advanced English level. **AI/ML \& LLM Ecosystem:** * LLM orchestration frameworks: LangChain, LangGraph, LlamaIndex. * Retrieval\-Augmented Generation (RAG) pipeline design. * Experience with vector databases (Pinecone, Weaviate, Milvus, Chroma, FAISS). * Hands\-on with LLMs \& APIs: OpenAI (GPT\-5/5\-mini), Anthropic Claude, Google Gemini, Meta Llama, Mistral. * Familiarity with AWS Bedrock for accessing and deploying foundation models. * Prompt engineering and structured output design (JSON mode, function calling). * Model fine\-tuning (LoRA, QLoRA) and evaluation frameworks (DeepEval, Ragas). **Responsibilities:** * Design and develop backend systems and APIs for AI\-powered applications. * Build and optimize LLM\-based workflows, including chatbots, copilots, and automation tools. * Implement RAG architectures using vector databases and document pipelines. * Integrate and orchestrate cloud\-hosted foundation models (AWS Bedrock, OpenAI, Anthropic, Google Gemini, Meta Llama, Mistral). * Collaborate cross\-functionally with data scientists, product managers, and frontend developers to deliver end\-to\-end AI products. * Ensure performance, scalability, and cost optimization of AI solutions in production environments. * Monitor, evaluate, and continuously improve deployed AI systems. **What we offer:** **Get paid, not played** No more unreliable clients. Enjoy on\-time monthly payments with flexible withdrawal options. **Predictable project hours** Enjoy a harmonious work\-life balance with consistent 8\-hour working days with clients. **Flex days, so you can recharge** Enjoy up to 24 flex days off per year without losing pay, for full\-time positions found through Proxify. **Career\-accelerating positions at cutting\-edge companies** Discover exclusive long\-term remote positions at the world's most exciting companies. **Hand\-picked opportunities just for you** Skip the typical recruitment roadblocks and biases with personally matched positions. **One seamless process, multiple opportunities** A one\-time contracting process for endless opportunities, with no extra assessments. **Compensation** Enjoy the same pay, every month with positions landed through Proxify.