Hello, world
The first post on the blog, and why it exists.
Backend developer · C# / .NET · AWS & Azure
Samuel Torres Fernandes
I design and build distributed systems — from the shape of the domain to the infrastructure that keeps them running in production.
Read the blog →About
I am a backend developer based in São Paulo, Brazil. At Robbu I build APIs and integrations in C#/.NET across the Azure ecosystem. Before that, at GID WEB, I led the architecture of the product refactor: I moved it to event-driven communication, reorganised the Node.js modules around DDD, streamlined the processes that were slowing the team down and set up the CI/CD pipelines. Earlier still, I spent nearly two years running Tenenge's infrastructure: networks, servers and virtualisation.
That infrastructure background is what lets me decide with the whole system in view: network, cost and failure modes weigh in alongside the domain model — the difference between a design that works in the slide deck and one that survives production. I am taking that further in a postgraduate programme in .NET Systems Architecture at FIAP, focused on C#/.NET, Azure and scalable, secure design.
Experience
Mar 2026 — now
Backend developer · Robbu
APIs and integrations in C#/.NET across the Azure ecosystem, covered by automated tests.
Jul 2025 — Jun 2026
Backend developer · GID WEB
Architecture of the product refactor: event-driven communication, Node.js modules following DDD, AWS architectures for new projects, database and log-storage design, CI/CD pipelines and automated tests.
May 2023 — Jan 2025
IT analyst · Tenenge
Responsible for company infrastructure: local networks, servers, virtualisation, asset inventory and network security.
Oct 2021 — May 2023
Apprentice · Ribeiro Caram
End-user technical support and day-to-day office IT routines.
Education
- Postgraduate, .NET Systems Architecture · FIAP2026 — 2027
- Development with Spring Boot · Senai São Paulo2025
- Technologist, Systems Analysis and Development · USCS2023 — 2025
- Technical degree, Sales and Marketing · Senai São Paulo2021 — 2023
Certifications
- Microsoft Certified: Azure Fundamentals · Microsoft2026-06
- AWS Certified Cloud Practitioner · Amazon Web Services2025-04
- Introduction to Cybersecurity · Cisco2025-03
Latest posts
See all →Contact
Got a system to design, scale or untangle? Drop me a line. Happy to talk opportunities and collaboration too — email or LinkedIn is the quickest way to reach me.
torresfernandessamuel@gmail.com