Rails engineer · Founder of Railsmith
Fábio Araújo
I build Rails products — and staff the teams that build yours.
10+ years shipping Ruby on Rails at scale, from enterprise ERPs to global marketplaces. I've launched four SaaS products of my own — and I run Railsmith, a nearshore agency placing pre-vetted senior Brazilian Rails engineers with US & EU teams.
Builder & Founder
Senior Rails engineers,
in your time zone.
Need to add serious Rails firepower to your team? I run Railsmith, a nearshore agency that places pre-vetted senior Brazilian Rails engineers with US and EU companies — with real timezone overlap and vetting done by people who actually ship Rails.
- Vetted by senior Rails engineers — system design, Hotwire, Postgres, testing — not generic coding quizzes.
- One stack, done deeply. Depth in Rails beats a generalist body shop.
- Platform-managed timesheets, approvals, and invoicing. Hourly or full-time.
Products I've Shipped
Not case studies — live products, in production, that I designed, built and launched end-to-end. Real payments, real users, real Rails. Click any of them.
Escavador de Carros
Automate your inventory purchasing
A market-intelligence platform for car dealers that monitors listings across all of Brazil 24/7, cross-checks them against FIPE pricing, and fires alerts in under 3 seconds via Telegram or webhook.
Nada Consta
Everything about a vehicle, by its plate
Instant vehicle history reports from a single license plate — fines, liens, auctions, theft records and judicial restrictions in one consolidated report, paid once via PIX or card.
Futeflow
Organize your pickup football, without the mess
One shareable link to run an amateur football group: attendance & waitlists, PIX payments with receipts, team draws, and an automatic top-scorer ranking. Ships as a responsive PWA.
AeroScout
What are your miles really worth?
A decision tool for frequent flyers that computes the true value of airline miles — factoring acquisition cost, opportunity cost and expiry — and tells you in seconds whether to redeem miles or pay cash across 6 loyalty programs.
About Me
A Rubyist at heart who ships. I split my time between building my own products and running Railsmith — which means the bar I hold other engineers to is the same one I hold myself to. Technical excellence, and people above all.
Professional Philosophy
Every line of code I write serves a purpose: bringing clarity and simplicity to other engineers. With over a decade of experience, I've learned that great software isn't just about elegant code—it's about creating solutions that make people's lives better.
I specialize in rescuing legacy codebases and transforming them into maintainable, scalable systems. My approach combines deep technical expertise with strong mentorship skills, ensuring that teams not only deliver excellent results but also grow professionally.
What I Work With
Backend & Frameworks
Data & Infrastructure
Frontend
Leadership & Delivery
Enterprise Experience
Before the products, there was a decade of shipping Rails at scale — enterprise ERP integrations, global marketplaces and platforms serving whole cities. This is the track record behind every engineer I vet for Railsmith.
ERP Integration Platform
Enterprise ERP · Fintech
The challenge
Enterprise clients were bleeding hours to mismatched data spread across disconnected ERP systems.
What I did
I led the design of an integration service that synced corporate platforms with multiple ERPs in real time — hitting 100% sync accuracy and cutting manual reconciliation from hours to near-zero.
Global Marketplace Platform
Marketplace · High-reliability
The challenge
A marketplace with global reach where any downtime meant lost transactions and lost trust.
What I did
I shipped critical features across logistics, wallet, subscriptions and purchase management — supporting 10,000+ daily active users at 99.9% uptime.
Internship Management System
Co-founded · EdTech
The challenge
Colleges and students had no single place to run the internship pipeline end to end.
What I did
I co-founded and built the platform from scratch — growing it to manage 2,000+ students and serve a 10,000+ member college community.
City Management Solutions
GovTech · Public sector
The challenge
City administrations were running critical services on paper and disconnected tools.
What I did
I built multiple platforms — citizen request management, a live metrics dashboard and fleet management — deployed across 3 city departments and handling 200,000+ citizen requests.
Property Management Platform
PropTech
The challenge
Landlords and tenants were juggling rentals and sales across spreadsheets and messages.
What I did
I designed and built a single platform to manage property rentals and sales end to end, streamlining the workflow for both sides of the deal.
CMS & Content Platforms
CMS · Content-heavy products
The challenge
Content teams were blocked on engineering for every publish on slow, brittle CMS stacks.
What I did
I built and maintained scalable CMS platforms with sub-second page loads and zero-downtime publishing, so teams could ship content without an engineering bottleneck.
Let's Connect
Two ways to work together: hire a vetted senior Rails team through Railsmith, or reach out to me directly about a product, a contract, or a legacy rescue.
Or reach me directly
Building something and want the person who's shipped four products and a decade of Rails at scale? Whether it's a new product, a contract, or modernizing a legacy codebase, I'd love to hear from you.
Why Work With Me?
- 10+ years of Ruby on Rails at enterprise scale
- Four SaaS products shipped and running in production
- Founder of Railsmith — I vet senior Rails engineers for a living
- Legacy rescue & team leadership, end to end