Available for new projects

Let's Build Something Exceptional

10 years turning complex engineering challenges into clean, scalable systems. Here is how I can help your team move faster.

What I offer

One-time

Technical Review

A deep 90-minute session analysing your architecture, codebase, or team structure — followed by a written report with prioritised recommendations.

From $300Book a
Project

System Architecture

Full architecture document for your product: data flow, service boundaries, API design, infra topology and tech stack decisions with trade-off analysis.

From $1,500Book a
Recurring

Technical Mentoring

Four 1-hour sessions per month for engineers or CTOs looking to level up in architecture, team management, or building AI-powered systems.

From $500/moBook a
Project

AI & LLM Consulting

Design and implement production-grade AI pipelines — from LLM orchestration and multi-agent systems to RAG architectures and intelligent automation.

From $2,500Book a
Project

Full-Stack Development

End-to-end delivery of web products using Next.js, TypeScript, Node.js and modern cloud infrastructure. From MVP to production.

CustomBook a
Project

Engineering Team Setup

Define and implement hiring processes, engineering culture, OKRs, on-call structure, and code review practices for high-growth tech teams.

From $2,000Book a

How it works

1

Book a call

Free 30-min discovery call to understand your challenge and define the best engagement format.

2

Custom proposal

I send a clear proposal within 48h: scope, deliverables, timeline and investment.

3

We build

Weekly check-ins, async communication, and a clear handoff at every milestone.

Trusted by engineers at

"Antonio redesigned our entire data pipeline architecture. The document was incredibly thorough — we saved months of bad decisions."

— CTO, B2B SaaS startup

"The mentoring sessions gave me a completely different perspective on system design. Worth every cent."

— Senior Engineer, Fintech

Common questions

Do you work with startups or only enterprises?

Both. I've worked with bootstrapped founders and engineering teams at scale. The engagement is tailored to your stage.

Do you sign NDAs?

Yes, always. Confidentiality is standard in every engagement.

What timezone are you in?

I'm based in Brazil (GMT-3) but work async with teams worldwide. Overlap of 2–3h is usually enough.

How quickly can we start?

Most engagements start within one week of signing. Book the discovery call and we will take it from there.

Ready to move fast?

Book the discovery call. It's free, 30 minutes, and you'll leave with clarity on your next step.

Book a free call
Services | Antonio Ferreira — Software Architecture & AI Consulting