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Senior Python AI Engineer at Proxify. Location Information: Time zone: CET (+/- 3 hours). 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.. . Time zone: CET (+/- 3 hours). We are unable to consider applications from candidates in other time zones.. . .  . . 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.