Portrait of André Silva, Senior Software Engineer

André Silva Senior Software Engineer — Flutter, Go & Fintech

Senior Software Engineer with 8+ years of experience specializing in Flutter, Dart, Go (Golang), PostgreSQL, Docker, AWS, and Fintech product engineering.

About André Silva

André Silva is a Senior Software Engineer with 8+ years of total software engineering experience, including over 5 years dedicated to building fintech and high-scale consumer applications.

"Engineering high-scale digital platforms requires pairing robust architecture with strict accessibility standards (WCAG 2.2 / VPAT) so products serve millions seamlessly." — André Silva

He specializes in cross-platform mobile development using Flutter and Dart, alongside backend microservices using Go (Golang), PostgreSQL, Docker, and AWS (Amazon Web Services).

  • Senior Software Engineer with 8+ years of experience engineering high-scale consumer software
  • Specialized in Flutter, Dart, Go (Golang), PostgreSQL, Docker, and AWS Cloud infrastructure
  • Migrated core digital banking platforms to Flutter for 100M+ customers at Nubank
  • Engineered Android Instant Apps driving 11,000+ daily new account registrations
  • Led WCAG 2.2 & VPAT accessibility compliance for digital banking products

Technical Expertise

Mobile Engineering

  • Flutter Framework & Dart Programming Language
  • Android Native (Kotlin), iOS Native (Swift), Android Instant Apps
  • State Management: BLoC, Redux, Provider, Riverpod, GetX
  • Architecture Patterns: Clean Architecture, MVVM, MVC, Hexagonal Architecture

Backend & Cloud Infrastructure

Career Journey & Work Experience

Senior Software Engineer — Jeitto | Payment Institution

– | São Paulo, SP, Brazil

André Silva launched Jeitto's first iOS wallet app with 46,000 downloads and 65% signup conversion rate.

  • Led mobile engineering for Jeitto's Insurance platform (Seguro AP), generating 2,090+ contracts and R$8.5K NIM in 4 months.
  • Co-led Android-to-Flutter migration and launched Jeitto's first iOS app with 46K downloads in month one (65% conversion rate).
  • Delivered core payment features including PIX cash-in, biometric authentication, and Tap to Pay.

Senior Flutter Engineer — Savana

– | Malvern, PA, USA

He led web and mobile accessibility remediation to achieve full VPAT and WCAG 2.2 Level AA compliance.

  • Led web and mobile accessibility remediation to achieve full VPAT and WCAG 2.2 compliance for digital banking platform.
  • Defined W3C WAI-ARIA accessibility standards and screen reader interactions across Flutter apps.

Software Engineer — Nubank (Nu Pagamentos S.A.)

– | São Paulo, SP, Brazil

André Silva migrated core mobile banking platforms to Flutter for over 100 million active users in Latin America.

  • Migrated Android and iOS digital banking features to Flutter serving over 100M+ active customers across Latin America.
  • Engineered Android Instant App architecture that drove 11,000 daily new account signups.
  • Redesigned PJ business account home experience achieving 88% CSAT score.

Flutter Developer — Evertec Brasil

– | Porto Alegre, RS, Brazil

He engineered white-label fintech core features for instant PIX payments and QR code transaction processing.

  • Built white-label core fintech features including PIX payments, QR code scanning, and transaction history using Flutter and Dart.

Frontend Developer Intern — ZScan Software

– | Goiânia, GO, Brazil

André Silva developed medical examination imaging software deployed across clinics in Brazil and South America.

  • Developed medical imaging examination software deployed across Brazil and South America using React, TypeScript, and Firebase.

Featured Engineering Projects

Erosyn

Privacy-focused social platform for verified adults featuring identity verification, encrypted messaging, and profile management across web and mobile.

  • Built with Flutter, Go (Golang), PostgreSQL, Docker, AWS, Firebase
  • Multiplatform cross-device architecture

erosynbr.com

Iskedoo

Cloud-based scheduling platform for service businesses with real-time calendar sync and automated notifications.

  • Built with Flutter, Firebase, Google Maps Platform, Node.js
  • Real-time appointment scheduling backend

iskedoo.com.br

Tiutiu — Animal Adoption

Open-source animal adoption platform connecting shelters and adopters with real-time search filters.

  • Built with Flutter, Firebase, GCP, SQLite, Node.js
  • Open source community contribution

tiutiu.com.br | GitHub Repository

Nubank Mobile App

Flagship mobile banking application for Latin America's largest digital bank serving over 100 million active users.

  • High-scale Flutter & Instant App infrastructure
  • 100M+ active users served

Nubank App on Google Play Store

Education & Certifications

Education

Certifications

  • Database Integration in GO — Rocketseat (2025)
  • Advanced HTTP Server Concepts — Rocketseat (2024)
  • Mastering the System Design Interview — Udemy (2024)
  • AWS Cloud Practitioner Essentials — Amazon Web Services (2022)
  • IELTS Band 9.0 (English Proficiency) — Elsa Speak (2022)
  • Software Architecture Fundamentals — desenvolvedor.io (2021)

References & Citation Sources

Authoritative documentation, institutional profiles, and technology standards referenced across this portfolio.

  1. Flutter Framework Specification — Official multiplatform application framework documentation from Google.
  2. Go (Golang) Language Documentation — Backend microservice development and HTTP server specifications.
  3. W3C Web Content Accessibility Guidelines (WCAG 2.2) — W3C WAI accessibility standard for web and mobile software.
  4. Nubank Platform & Investor Relations — Official platform profile for Latin America's largest digital bank (100M+ users).
  5. Jeitto Payment Institution — Credit and digital payment platform documentation and iOS application metrics.
  6. Pontifical Catholic University of Goiás (PUC Goiás) — Computer Science and Software Engineering degree program registry.
  7. Amazon Web Services (AWS) Certification Registry — AWS Cloud Practitioner credential verification portal.