Backend Engineer & Go Specialist
Go specialist, high-performance systems, and architectures that handle millions of requests. Pragmatism over hype. Results over complexity.
22+
years of experience
23M
emails/day (Dinamize)
67
systems rewritten
12
years with Go
Real projects with measurable impact. Systems that handle millions and don't go down.
We replaced Intelipost (market leader) in 67 days. Shipping calculation system for Brazil's 8th largest marketplace. Zero downtime on Black Friday.
50ms
response time
250k
shipping rules
$150
/month infra
100%
uptime
Email marketing platform rescued. Rewrote 67 systems in Go 0.90 (before v1.0!).
Bed management system for Porto Alegre Clinical Hospital. National healthcare reference.
Impact
Real-time visibility of all beds in the university hospital.
Analytics and recommendation system for e-commerce. Real-time event processing.
Features
Impulse, recommendations, real-time dashboards.
Management system for tailoring franchise network. Production, inventory, and sales control.
Scope
Complete integrated franchise network.
Complete system for real estate bank. Contract, client, broker, and financial management.
Volume
Hundreds of millions in managed contracts.
Senior PHP & Perl Developer at PlugIn ISP (acquired by UOL in 2004). Built Brazil's first complete webhost automation: DNS, email, webserver, and databases. Created the first ISP e-commerce in Brazil.
24h→1m
provisioning time
99.93%
faster
1st
ISP e-commerce BR
Award
industry innovation
Built analytics 10x more efficient than Google Analytics. Processed logs from thousands of sites daily. 10+ years running.
Focus on backend, performance, and systems that need to work. No over-engineering, no unnecessary hype.
12 years of experience. Since version 0.90, before 1.0. Concurrency, APIs, distributed systems.
PostgreSQL, MySQL, Redis, LevelDB. Modeling, optimization, sharding when needed.
Millions of requests/hour. Sub-100ms latency. Cache strategies. Zero downtime.
🐹
Go
🐘
PostgreSQL
🔴
Redis
🐳
Docker
🐧
Linux
☁️
AWS/DO
"I don't over-engineer. I prefer to ship something that works, measure what matters, and improve with real data."
Tracking AI evolution through Hacker News discussions. Data from 4.78M items analyzed.
Source: Hacker News discussions Jan-Dec 2025
Building production systems with Claude, GPT, and open-source models. RAG pipelines, embeddings, and real-time inference.
4.78M
items analyzed
176K
unique users
Full Research
Hacker News Universe 2025
Interactive infographic with complete analysis
Thoughts on technology, AI, and the future of software development.
Ralph Wiggum: a tool that forces AI to actually complete tasks by using binary verification loops.
Read more →Ralph Wiggum: ferramenta que força a IA a realmente completar tarefas usando loops de verificação binária.
Ler mais →How voice interfaces are replacing visual UIs, and why I already use this daily in my terminal workflow.
Read more →Como interfaces de voz estão substituindo UIs visuais, e por que já uso isso diariamente no terminal.
Ler mais →When AI assistants refuse to help and the growing skepticism around AI tools in development.
Read more →The premature optimization trap in AI assistants and how to get better results.
Read more →The decline of Stack Overflow and what it means for developer communities.
Read more →How AI-powered hiring is filtering out qualified candidates and what we can do about it.
Read more →A look back at the Brazilian tech community platform and its evolution.
Read more →Visual analysis of 1,600 articles. AI dominates with 33% of all content.
Explore data →Digital presence map of 7.2M businesses across 500 Brazilian cities. Websites, phones, social media, and brands analyzed from Overture Maps data.
Explore dashboard →Besides consulting, I develop my own products.
High-performance systems consulting and complex integrations.
stickybit.com.br →Local SEO agency for Brazilian businesses.
ligadous.com →Voice and AI-powered solutions.
voxa.one →Party supplies and event rentals.
rcfestas.com →Real estate platform.
lucreal.com →Automotive services directory in Brazil.
autocidade.com →Pet services directory in Brazil. (in development)
petcidade.com →Tech news portal. Full infra since 2023: MySQL cluster, bot mitigation, performance.
baguete.com.br →Market Saturation Radar for SaaS. Identify opportunities in crowded markets.
pontozero.info →A legacy to rewrite? A Black Friday to survive? A complex integration to make work?
Let's TalkRemote work, flexible timezone. Clear async communication, frequent deliveries.
Remote, flexible timezone. Async communication, frequent deliveries. I can work solo or lead a team.
Depends on the project. Senior Go remote: $60-100/hour or fixed-price with defined scope.
Yes. Some of the best projects were 67 days. Tight deadlines force right decisions.
Go is the focus. But I have experience with PHP, Python, JavaScript. The language is a tool, what matters is solving the problem.