Available for new projects

Montevideo, Uruguay

Nelson Fabian Rey.Architecting scalable systems and AI products.

With over 20 years of engineering experience, I specialize in solutions architecture, full-stack product delivery, and AI integrations. I transform complex requirements into robust, cloud-native platforms that balance velocity, resilience, and operational clarity.

Focus

  • Strategic solutions architecture and technical leadership
  • Scalable product delivery and cloud-native infrastructure
  • AI agent integration and automation workflows
Years experience
20+
Systems shipped
50+
Enterprise clients
30+

Capability

Solutions Architecture & Cloud

  • Designing scalable, cost-effective AWS and Kubernetes architectures
  • Transitioning legacy systems to modern event-driven and GraphQL paradigms
  • Technical leadership and bridging engineering with business strategy

Capability

Full-Stack Engineering

  • Lead engineering for high-traffic platforms and global enterprise applications
  • End-to-end delivery using modern TypeScript, Python, and .NET ecosystems
  • Setting the standard for code quality, performance, and CI/CD automation

Capability

AI Agents & Automation

  • Developing autonomous LLM agents and multi-step reasoning workflows
  • Integrating generative AI and vision models into production applications
  • Engineering structured extraction pipelines for reliable data processing

Selected work

A portfolio grounded in running systems, not just presentation.

This site points to infrastructure and services used as living demonstrations of architecture, integration, and operational decision-making.

Web crawler service

01

Async crawling and extraction workflows backed by PostgreSQL and Redis.

Renderer service

02

Browser automation infrastructure for screenshots, rendering, and page analysis.

Product search agent

03

Multi-step AI search workflows combining LLM reasoning, vision, and web data.

Observability stack

04

Metrics, logs, and dashboards that make distributed systems debuggable in practice.

Approach

Strong architecture comes from clear tradeoffs, not abstract complexity.

I focus on systems that teams can operate with confidence: explicit configuration, measured automation, safe integrations, and practical feedback loops from metrics and logs.

What clients get

  • Architectures that solve complex business challenges with predictable scaling
  • Seamless execution from high-level system design to hands-on implementation
  • Pragmatic AI adoption that delivers measurable reliability and business value

Connect

If you need a technical leader who can bridge strategic architecture with hands-on production delivery, let's talk.

I partner with teams to scale their infrastructure, modernize legacy stacks, and integrate AI workflows—always with a bias toward shipping reliable, high-impact outcomes.

Let's talk

LinkedIn

Professional background and recent work.

Upwork

Freelance profile, reviews, and availability.

GitHub

Code, infrastructure patterns, and service implementations.

Email

Direct communication for inquiries and collaborations.