We are looking for a **Junior Backend Developer** interested in **Artificial Intelligence**, **LLMs**, and **modern backend architectures**, to work on the development and evolution of AI-based solutions. Responsibilities * Develop and maintain backend APIs and services in **Python** * Support the implementation of solutions using **LLMs (Large Language Models)** * Work with **RAG (Retrieval-Augmented Generation)** for searching and generating responses using internal data * Integrate AI models with backend systems and databases * Participate in the analysis, development, and improvement of backend workflows and architectures * Collaborate with the team to fix bugs, perform optimizations, and evolve the product * Document processes and technical solutions clearly Requirements * Knowledge of **Python** * Understanding of **backend development** (APIs, services, integrations) * Basic knowledge or interest in **Artificial Intelligence** and **LLMs** * Familiarity with **RAG** concepts * Understanding of databases (SQL or NoSQL) * Basic knowledge of version control with **Git** * Willingness to learn, proactivity, and good communication skills Nice-to-have * Experience or studies with **LangChain, LlamaIndex, or similar frameworks** * Knowledge of **REST APIs** * Understanding of cloud platforms (AWS, GCP, or Azure) * Experience with automated testing * Interest in observability, metrics, and AI model evaluation. Send your resume to email: talentos@equipe.pixaflow.com Job type: Freelance / PJ Contract duration: 12 months Compensation: R$1.000,00 – R$1.700,00 per month Work location: Remote