Open to opportunities

Leonardo Machado

@leonardomachado

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Experienced software engineer specializing in scalable fintech, cloud, and mobile solutions.

Brazil

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What I'm looking for

I seek a senior engineering role in fintech or cloud-native products where I can lead teams, solve security and scalability challenges, collaborate with UX, and drive delivery in a fast-paced, growth-focused company.

I am a senior software engineer with broad experience across frontend, backend, and infrastructure, focused on digital banking and high-impact applications.

I have built scalable systems using Flutter, Python, MongoDB, gRPC, RabbitMQ, Redis, React, Angular, PHP and MySQL, and I manage cloud environments with Kubernetes and gateways like Kong. I delivered account opening, payments, PIX, biometric authentication, corporate receivable advance, card and investment features, and an internal admin dashboard.

As a technical lead I drive best practices, CI/CD, microservices, TDD, and Scrum, mentor engineers, and collaborate closely with UX to deliver fast, secure, user-centered products. I am motivated to solve scalability and security challenges in growth-stage companies.

Experience

Work history, roles, and key accomplishments

Software Engineering Lead

Left

Jun 2023 - Jul 2025 (2 years 1 month)

Led frontend, backend, and infrastructure teams to deliver a digital banking platform including account opening, payments, PIX, card and investment features, and corporate accounts receivable advance. Improved infrastructure security with Kong, refactored services in Kubernetes, and implemented biometric authentication and event-driven automation.

Flutter Python Kubernetes gRPC RabbitMQ Redis Kong Microservices Scrum

Software Engineer

Claro Pay

Jan 2022 - Jun 2023 (1 year 5 months)

Architected a mobile digital banking app serving over 5 million users, defined CI/CD processes, and implemented a design system to improve consistency and maintainability. Applied Clean Architecture, TDD, and SOLID principles while mentoring junior developers and delivering business account opening flows.

Flutter Mobile Architecture Principles CI CD Design Systems TDD SOLID Analytics

Software Engineer

Dragon Venture Capital

Nov 2020 - Jul 2022 (1 year 8 months)

Developed payment systems and led a four-person team for a national food delivery app, implementing CI/CD pipelines and analytics to streamline releases. Maintained merchant back-office features and migrated the application to recent platform versions.

Payments CI CD TDD SOLID Analytics Team Leadership

Software Engineer

ErSystems

Nov 2018 - Nov 2020 (2 years)

Migrated three legacy Ionic 2 applications to Flutter and implemented new retail features while maintaining MVC architecture and Clean Code principles. Added test coverage to improve application stability and reliability.

Ionic Flutter MVC Clean Code Testing TypeScript Mobile Development

Software Engineer

Fast2Pay

Jan 2018 - Nov 2018 (10 months)

Developed hybrid billing, support, and administrative applications using Ionic and Angular, delivering responsive, high-quality interfaces and prototypes based on designer specifications. Collaborated via Bitbucket and ensured performance across devices.

Ionic Angular TypeScript HTML5 CSS3 MaterializeCSS Prototyping Materialize CSS

Software Engineer

Freelancer

Jun 2016 - Jan 2018 (1 year 7 months)

Built e-commerce websites and landing pages using HTML, CSS, JavaScript, and PHP, delivering responsive and functional user experiences. Managed end-to-end development and client requirements for web projects.