Calvin Soares
I'm a software engineer working across the stack, with a strong focus on distributed systems architecture, performance and digital product evolution.
My experience spans CRM, SaaS products and payment platforms, building solutions with APIs, queues, observability, security, QR codes, webhooks and end-to-end traceability.
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 solution that connects businesses to the PIX ecosystem, enabling charge creation, QR code generation and real-time status tracking through postbacks and webhooks. It helps companies automate collections, reduce checkout friction and keep reconciliation and transaction traceability end to end.
Skills
