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I will build ai agents to automate workflows using llms, langchain and apis
Marcelo M
About this gig
Top-Tier AI Agent & LLM Development by Senior Engineer (15+ years XP)
Stop building simple chatbots. You need autonomous AI agents and enterprise LLM apps that solve real business problems.
I am a Senior Software Engineer, specializing in high-scale systems and Generative AI. With 15+ years of experience in big tech, I architect robust, scalable, and secure AI solutions using the latest tech stacks.
What I deliver:
- Autonomous Agents: Multi-step reasoning with LangChain, LangGraph, and CrewAI.
- Advanced RAG: Deep integration with Vector DBs (Pinecone, Milvus) for private data.
- Custom Workflows: Automation with GPT, Claude, Gemini, Deepseek, and Open Source models.
- Backend Integration: High-performance AI connectivity via Go, Node.js, or Python.
Why me?
- Senior Expertise: Real-world experience at one of the world's largest e-commerces.
- Scalability First: I build for production, not just prototypes.
- Modern Stack: Specialist in Agentic Workflows and AI-assisted engineering.
Please contact me before ordering to discuss your project!
Get to know Marcelo M
Marcelo M
Senior Software Engineer
- FromBrazil
- Member sinceAug 2026
Languages
English, Portuguese, Spanish
I am a Senior Software Engineer with over 15 years of experience designing and deploying scalable systems and robust cloud architectures using Go, Node.js, and Python. I have a proven track record in improving system performance and managing capacity for large-scale commercial events. I am a pioneer in applying Generative AI, LangChain, and autonomous agents to the SDLC, utilizing Specification-Driven Development to accelerate delivery and integrate reasoning with execution.
My Portfolio
FAQ
Do I need to provide my own API keys?
Yes. You will need to provide your own API keys (OpenAI, Anthropic, Pinecone, etc.). This ensures you have full control over your usage costs and billing. During our handover, I will guide you on how to securely set up your environment variables.
Who owns the source code after delivery?
You do. Once the project is completed and the order is closed, you have 100% ownership of the source code. I deliver clean, well-documented code that is production-ready and easy for your internal team to maintain.
Can you integrate the AI agent into my existing tech stack?
Absolutely. With 15+ years of experience, I can integrate AI solutions into backends built in Go, Node.js, or Python, and connect them to databases like PostgreSQL, MongoDB, or SQL Server. I focus on building seamless connectors that respect your current architecture.
Which LLMs and frameworks do you specialize in?
I am an expert in LangChain, LangGraph, and CrewAI. Regarding models, I primarily work with GPT, Claude, Gemini and Llama. For RAG systems, I implement Vector Databases like Pinecone, Milvus, or Weaviate to ensure the agent has access to your private data.
Do you offer a consultation before I place an order?
Yes, and I highly recommend it. AI projects vary in complexity, so a quick chat helps us align on technical feasibility and requirements. This ensures I can provide the most accurate custom offer and a realistic timeline for your specific business needs.
