I'm an innovative Staff Software Engineer with over 12 years of experience in building scalable financial technology solutions. I specialize in Go and NodeJS, and I'm passionate about transforming complex requirements into elegant, secure, and efficient technical solutions for financial institutions. I'm also a big advocate for the K.I.S.S. (Keep It Simple, Stupid) Methodology.
ย ย Find me on LinkedIn: in/lucascostaoliveira
ย ย Email me at: lucas@ulcas.com
I have a strong ability to architect and lead the development of mission-critical micro-services in the FinTech sector. My experience spans everything from automated eligibility and risk systems to complex third-party integrations. I thrive on driving technical strategy across both client-facing solutions and core architecture to accelerate business growth while ensuring reliability and regulatory compliance.
- ๐ข I'm currently a Staff Software Engineer at Traive, where I lead the architecture of microservices that power our credit transaction platform.
- ๐ป I architected and led the development of core micro-services using Go and NodeJS, enabling the processing of thousands of financial credit applications.
- ๐ก I founded Sigma Cash, a cash-back rewards platform, developing the MVP and backend infrastructure to acquire over 15,000 users and 18 businesses.
- ๐ I'm fluent in Portuguese (Native) and English (Native/Bilingual).
I have a deep expertise in a variety of technologies. Here's a snapshot of what I work with:
Core Technologies:
- Go (Golang): 4 years of experience
- NodeJS: 9 years of experience
- Software/Platform Architecture: 5 years of experience
- Java: 4 years of experience
- React & React Native: 5 years of experience
Databases:
- SQL: PostgreSQL, MySQL, Aurora
- NoSQL: MongoDB, Redis, Neo4j
Cloud & DevOps:
- AWS Services, Google App Engine (GAE)
- Microservices Architecture, RESTful APIs
- ElasticSearch, Docker, DevOps Practices




