04/24/2026 updated
100 % available
Senior Backend Engineer | AI Architecture & LLM Specialist (Python / Django)
São Paulo, Brazil
Worldwide
Fine-TuningLangChainApplication Programming Interfaces (APIs)Artificial IntelligenceBusiness Process Model and NotationSoftware as a ServiceDevOpsDjangoPython (Programming Language)PostgreSQLMessaging Application Programming InterfaceRedisSystems IntegrationLarge Language ModelsGenerative AI
Professional Skills & Expertise
I am a Senior Backend Engineer and AI Specialist with a focus on building scalable, production-ready AI-as-a-Service (AIaaS) platforms. My expertise lies in bridging the gap between complex Artificial Intelligence models and robust, high-performance backend architectures.
Core Technologies & Technical Skills:
- Backend Development: Expert in Python and Django (including DRF and Django Channels for WebSockets). Proficient in Node.js and Express.
- Artificial Intelligence & LLMs: Specialist in RAG (Retrieval-Augmented Generation), LangChain, and Conversational Decision Agents. Extensive experience with OpenAI/Meta APIs and migrating to Self-hosted Proprietary LLMs for cost optimization and data sovereignty.
- Data & Performance: High-performance asynchronous processing using Celery, Redis, and Gevent. Advanced knowledge of PostgreSQL query optimization and indexing.
- Infrastructure & DevOps: Proficient in Docker, Docker Compose, and AWS (EC2, S3) deployment, including CI/CD pipelines and Nginx configuration.
Notable Achievements & Industry Experience:
- AI SaaS Architecture: Architected a scalable AI ecosystem handling thousands of requests through complex asynchronous pipelines.
- Technical Leadership: Led the vectorization and processing of massive document databases to ensure accurate, context-based Generative AI responses.
- Systems Integration: Developed end-to-end management systems with real-time AI assistants for specialized sectors like agriculture and inventory control.
- Award-Winning Innovation: Recognized with "Highlight Project" awards for AI-driven health predictors and cloud simulation systems.
I am committed to clean code, secure authentication (JWT/OAuth), and delivering innovative solutions that leverage the full potential of Generative AI
Experience
Professional experience5 - 10 years
Freelancer since2024
Languages
EnglishGoodPortugueseNative speaker
Project history
- Architected and developed a scalable AI-as-a-Service (AIaaS) ecosystem using Django and React (Vite).
- Implemented real-time bidirectional communication via WebSockets (Django Channels) and Redis.
- Led the transition of the AI architecture from external APIs (OpenAI/Groq) to a Self-hosted Proprietary LLM in production, ensuring data sovereignty.
- Built high-performance asynchronous pipelines with Celery/Gevent to orchestrate model fine-tuning and document generation (PDF/Docx).
- Designed a robust billing infrastructure integrating Stripe to manage complex subscriptions and multi-tenancy features.
- Implemented custom rate limiting and performance optimizations using Redis.