Open to opportunities

Marcos Miller Dantas

@marcosmillerdantas

Message

I build reliable fintech platforms and production AI systems that scale from millions to enterprise users.

Brazil

Message

What I'm looking for

I'm looking to build production-grade AI, platform, and reliability systems where I can solve complex scale, architecture, and operational problems while helping teams adopt durable engineering practices.

I've scaled Neon Pagamentos' payments infrastructure from 1M to 35M+ users across processing, settlement, fraud detection, compliance, and onboarding. I led cloud-native migration, Kubernetes standards, incident response, and platform modernization for 500+ engineers while cutting database resource consumption by 80% and increasing logging throughput from 7 to 35 req/sec.

At Monaco, I unified PostgreSQL, MongoDB, SQL Server, and MySQL into an AI analytics platform and built deterministic multi-agent systems that reduced LLM token costs by 70–80% across 10,000+ scenarios. I also build observability, asynchronous processing, secure data platforms, and practical developer tooling across AWS, .NET, Node.js, Kubernetes, and modern AI infrastructure.

Experience

Work history, roles, and key accomplishments

Current

Staff Engineer | AI Engineer | Founding Engineer

Current

Monaco

Jan 2025 - Present (1 year 7 months)

Unified multiple data silos into a single AI analytics platform and built a custom deterministic agent framework reducing LLM token costs by 70-80%. Shipped multi-agent analytics systems in production with custom agentic orchestration patterns.

Agentic AI AWS LLM Pgvector RAG