Fernando Gomes

Fernando is a Principal Full Stack Engineer & Architect with over 20 years of experience in high-performance software engineering. He specializes in modernizing legacy enterprise systems (Java/Monoliths) into cloud-native, scalable architectures (Node.js/Microservices/AWS). His career spans founding engineering roles at venture builders to leading distributed teams at major financial institutions. Currently, he focuses on AI Agentic Workflows, FinOps, and scalable system design.

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Fernando Gomes

Work Experience

Founding EngineerStellula & The Collab

Aug 2024 - Present
  • Architected the IT Strategic Roadmap for Caixa Loterias, designing a future-proof, cloud-native infrastructure capable of supporting billions of annual transactions for one of Brazil's largest lottery operations.
  • Developing AI Agentic Workflows using Python and LLMs, automating complex business analysis and due diligence processes, reducing manual effort by 40%.
  • Building full-stack MVPs using Next.js and Node.js to rapidly validate investment theses, acting as the primary technical architect for the venture builder's portfolio.
  • Established the Technical Due Diligence framework for a Private Equity Fund (FIP), assessing the scalability, security, and code quality of target startups in Fintech and Healthtech.
  • Acted as a strategic technical advisor to executives and investment partners, influencing long-term technology and portfolio decisions.
Python
GenAI (LLMs)
System Design
Enterprise Architecture
Next.js

Engineering LeadHospital Sírio-Libanês

Oct 2021 - Aug 2024
  • Engineered a FHIR-based Health Lake on AWS, creating a standardized data layer that reduced partner integration time by 50% (from weeks to days).
  • Architected the Digital Urgent Care platform, migrating legacy components to microservices to support 15,000+ monthly consultations with 99.99% availability.
  • Led organization-wide FinOps initiatives in partnership with engineering and finance leadership, optimizing AWS resource allocation and achieving a 20% reduction in monthly cloud costs while scaling operations.
  • Designed the cloud-native architecture for the Sírio-Libanês Medical College, enabling a scalable platform capable of handling 3,000+ concurrent students during critical exam windows.
AWS
FHIR
FinOps
Microservices
Kubernetes
Node.js
System Design

Software Engineer & Tech LeadBanco BV

2017 - 2021
  • Engineered the Wholesale Financial Calculation Engine, a high-performance Java system processing complex indicators (MtM, Accrual) for derivatives and corporate loans, enabling the Treasury to manage the bank's market position in real-time.
  • Founded and institutionalized the Microservices Architecture Practice, defining the foundational design patterns, security standards, and governance that guided the bank's transition from monolithic to distributed systems.
  • Architected the Core Accounting & Contract Processing Engine, responsible for managing over R$ 10 Billion (approx. $2B USD) in assets, ensuring zero-defect compliance for the Central Bank.
  • Led a Distributed Engineering Team of 30+ developers across Brazil and India, implementing async workflows that ensured 24/7 development cycles.
Java (High Performance)
Microservices Governance
Treasury Systems
Oracle
Distributed Teams

Senior Backend EngineerTalent / Deal Technologies

2015 - 2017
  • Developed critical workflow automation systems for financial markets using Event-Driven Architecture, increasing operational efficiency by 30%.
  • Implemented integration patterns (Broker) to synchronize data between distributed systems in a high-security banking environment.
Java EE
IBM BPM
Event-Driven Architecture
SOA

Senior Java DeveloperCI&T

2012 - 2015
  • Built the Internet Banking platform for Banco Fibra from scratch, delivering 15 major releases with 100% deadline adherence over 1.5 years.
  • Developed regulatory compliance modules for Banco Votorantim, translating complex financial rules into robust Java code.
Java
Spring Framework
Hibernate
Jenkins
JUnit
SQL

Software EngineerEverMobile

2005 - 2012
  • Developed secure Internet Banking solutions and mobile payment gateways for top-tier global financial institutions including JP Morgan, American Express, and Banco Venezolano.
  • Implemented high-security protocols for early mobile financial transactions, establishing a strong foundation in AppSec and data encryption.
Java ME
J2EE
SSL/TLS
Cryptography
Mobile Architecture

Latest Writings

All posts

Beyond the Chatbot: Building Agentic Workflows for Real-World Due Diligence

2026-02-10

Why 'Chat with PDF' isn't enough for business strategy, and how we engineered Python-based AI Agents to automate complex investment analysis.

From Monoliths to Microservices: What 15 Years of Java Taught Me About Node.js

2026-01-24

Why a veteran Java Architect embraced Node.js for Cloud-Native systems, and how to apply Enterprise rigor to modern JavaScript runtimes.

Skills

Languages

TypeScript
JavaScript
Java (Legacy/Enterprise)
Python
SQL

Frontend

Next.js
React
Tailwind CSS
Shadcn/UI
HTML5/CSS3

Backend

Node.js
NestJS
Spring Boot
Microservices
Event-Driven Architecture

Cloud & DevOps

AWS (EC2, Lambda, S3, RDS)
Kubernetes
Docker
Terraform
FinOps

Architecture & Data

Microservices
Event-Driven Architecture
System Design
PostgreSQL
Oracle
DynamoDB
Redis
FHIR

Emerging Tech

AI Agents
LLMs (OpenAI/LangChain)
Agentic Workflows

Education

PUCRS, Brazil

Expected 2026 -
MBA in Technology for Business (AI, Data Science, Big Data)

Centro Universitário Nove de Julho, Brazil

2000 - 2004
Bachelor of Computer Science