About
Calvin Soares
Software engineer working across the stack, with experience in CRM, SaaS and payment platforms, improving products, integrations and critical flows.
My current focus is architecture, back-end and the technical decisions that connect reliability, scale and user experience.
Full Stack Engineer
I build scalable products and platforms with strong architecture, performance and user experience.
I work across the full stack, with experience in SaaS, CRM and payment solutions connected to the PIX ecosystem, combining architecture, integrations and user experience.
Architecture
I design solutions that prioritize scalability, maintainability and resilience.
Back-end
I work with Node.js and Java/Spring on APIs, authentication, webhooks, payments and critical business rules.
Delivery
I connect product, engineering and UX to turn requirements into reliable software.
Featured experience
PagLemon
Senior Tech Lead
A payment platform connected to the PIX ecosystem, with charge creation, QR code generation and status updates through postbacks and webhooks. The work focused on stronger operational reliability, less checkout friction and better transaction traceability.
Skills
