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Backend engineer focused on payment infrastructure, orchestration, acquirer integrations, and risk management, currently at payConductor.AI. I work mainly in Java with Spring Boot and TypeScript with NestJS and Elysia, with React or Next.js on the frontend and occasional Flutter for mobile. MySQL or MongoDB depending on the data shape, and event-driven pipelines built on RabbitMQ. I care about correctness as much as speed: spec-driven development, CI/CD as a non-negotiable, and shipping incrementally over sitting on big releases. 13 years working in English, plus basic Spanish and French.…Backend engineer focused on payment infrastructure, orchestration, acquirer integrations, and risk management, currently at payConductor.AI. I work mainly in Java with Spring Boot and TypeScript with NestJS and Elysia, with React or Next.js on the frontend and occasional Flutter for mobile. MySQL or MongoDB depending on the data shape, and event-driven pipelines built on RabbitMQ. I care about correctness as much as speed: spec-driven development, CI/CD as a non-negotiable, and shipping incrementally over sitting on big releases. 13 years working in English, plus basic Spanish and French.

Gabriel Gonçalves

Full Stack Developer, Back-End Developer, Software Engineer, +2

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Backend engineer focused on payment infrastructure, orchestration, acquirer integrations, and risk management, currently at payConductor.AI. I work mainly in Java with Spring Boot and TypeScript with NestJS and Elysia, with React or Next.js on the frontend and occasional Flutter for mobile. MySQL or MongoDB depending on the data shape, and event-driven pipelines built on RabbitMQ. I care about correctness as much as speed: spec-driven development, CI/CD as a non-negotiable, and shipping incrementally over sitting on big releases. 13 years working in English, plus basic Spanish and French.…Backend engineer focused on payment infrastructure, orchestration, acquirer integrations, and risk management, currently at payConductor.AI. I work mainly in Java with Spring Boot and TypeScript with NestJS and Elysia, with React or Next.js on the frontend and occasional Flutter for mobile. MySQL or MongoDB depending on the data shape, and event-driven pipelines built on RabbitMQ. I care about correctness as much as speed: spec-driven development, CI/CD as a non-negotiable, and shipping incrementally over sitting on big releases. 13 years working in English, plus basic Spanish and French.

Available to hire

Backend engineer focused on payment infrastructure, orchestration, acquirer integrations, and risk management, currently at payConductor.AI. I work mainly in Java with Spring Boot and TypeScript with NestJS and Elysia, with React or Next.js on the frontend and occasional Flutter for mobile. MySQL or MongoDB depending on the data shape, and event-driven pipelines built on RabbitMQ.
I care about correctness as much as speed: spec-driven development, CI/CD as a non-negotiable, and shipping incrementally over sitting on big releases.
13 years working in English, plus basic Spanish and French.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Portuguese

Fluent

Work Experience

Software Engineer - Pay Conductor.AI at Pay Conductor.AI

November 1, 2025 - Present

Developed payment gateway solutions and integrations for multiple acquirers in both white-label and standalone environments. Built new frontend features using React with backend services using TypeScript and Elysia. Maintained and improved application stability by fixing bugs and supporting development and production environments. Integrated PostgreSQL, Redis, and Docker-based services to improve performance and reliability. Worked across API development, integrations, and scalable web application support in payment-related systems.

Software Engineer - Independent Developer

January 1, 2025 - October 31, 2025

Delivered custom software solutions for individuals and businesses, owning system architecture and database design for both relational and non-relational environments. Built web applications using React, Angular, and Next.js including SEO-oriented implementations. Developed backend applications with Java 17/21 and Spring Framework, and TypeScript-based services with NestJS. Used Docker and RabbitMQ for containerized deployments and asynchronous communication.

Software Engineer - MS Consulting at MS Consulting

March 1, 2023 - December 31, 2024

Developed APIs using Java and Spring Framework with focus on application security, robustness, scalability, and integration with databases and cloud services. Built frontend web applications with Vue.js and React.js to support accessible user experiences and modern interfaces. Integrated relational and non-relational databases (MySQL and MongoDB) and supported messaging workflows using RabbitMQ. Contributed to end-to-end delivery across backend, frontend, and data integration layers.