Hybrid Senior Staff Engineer – Mobile/Flutter

at Aplazo

• Job title: Senior Staff Engineer – Mobile/Flutter
• Job type: Full Time
• Experience level: Senior
• Salary: Not specified
• Degree requirement: Bachelor's Degree
• Tech skills: Android, Dart, Flutter, GRPC, iOS
• Location requirements: Hybrid, Mexico City, Mexico

About the role

• Lead the evolution of mobile platform engineering to create a premier BNPL experience in Mexico. Oversee architecture, modernization, and mentoring within the mobile team.

Responsibilities

• Lead the evolution of our mobile platform to make it the fastest, most reliable, and delightful BNPL experience in Mexico.
• Own the entire mobile architecture and codebase, drive the modernization toward a clean, modular, scalable Flutter foundation.
• Define the long-term technical vision, establish world-class engineering standards, mentor and level-up the mobile team.
• Drive documentation, rituals, and onboarding, and regularly present roadmap, architectural decisions, and technical wins to various stakeholders.
• Own end-to-end mobile architecture and codebase evolution: modular, testable, performant, secure, and built for rapid growth in Mexico and LATAM.
• Define and enforce mobile engineering standards: best practices, design system adoption, code reviews, documentation (Design Docs, ADRs), observability, testing, CI/CD, and incident management.
• Hands-on drive Flutter migrations, native plugin development, performance optimizations, and complex feature delivery when needed.
• Be the company’s mobile/Flutter authority and primary technical mentor.
• Run mobile rituals, onboarding programs, tech talks, and brown-bag sessions to level-up the entire team.

Requirements

• Experience 6+ years hands-on Flutter/Dart in production at scale (millions of users preferred)
• Multiple successful large-scale Flutter migrations or greenfield builds shipped to stores
• Proven track record modernizing legacy mobile codebases without sacrificing velocity
• Experience leading mobile engineering at fintech or high-growth consumer apps
• Shipped high-impact financial products (lending, savings, payments, credit journeys, etc.)
• Expert-level Flutter & Dart: architecture patterns, state management at scale (Riverpod, Bloc, Provider, etc.), native plugins, performance profiling, widget optimization, CI/CD
• Deep iOS & Android platform knowledge (native bridges, store policies, background processing, push, deep linking, etc.)
• Strong secure mobile development: anti-tampering, secure storage, jailbreak/root detection, certificate pinning, secure API/auth practices
• Design systems, accessibility, observability, crash reporting, analytics integration
• Solid backend literacy (REST/gRPC, secure API design) – can partner effectively with backend teams
• Ownership mindset.

Benefits

• Health insurance
• Professional development opportunities