Scale-up production work

Burger King Mobile App at Scale

Mobile product work inside a real ordering business, where reliability, regional complexity, and team execution matter.

2022 - Present Production scale-up experience React NativeOrderingFrontend ArchitectureScale-up

Context

At Restaurant Brands International / Santex, Juan worked on the Burger King mobile app in a product environment where small technical decisions can affect ordering reliability, restaurant discovery, and regional rollout quality.

Evidence

Production mobile app
USA, Europe, and Canada scope
Frontend stabilization
Team-based delivery

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Problem

Ordering products carry hidden complexity: restaurant state, user state, regional behavior, performance, and the pressure of real customer sessions. The work is less about isolated screens and more about making flows resilient enough for product teams to keep moving.

Product Decisions

Treat mobile architecture as product infrastructure, not only UI implementation.
Separate ordering concerns from restaurant discovery and supporting state so flows can be reasoned about independently.
Keep product changes shippable by working within the existing team architecture instead of forcing rewrites.
Prioritize stabilization and performance where they protect the user journey and the business outcome.

Technical System

Mobile product surface

React Native app with customer-facing ordering and restaurant flows.
Frontend architecture that had to support multiple markets and product needs.
Release-sensitive work where reliability matters more than cleverness.

Execution context

Collaboration inside an established product and engineering organization.
Work shaped by delivery constraints, QA feedback, analytics, and production risk.
Technical decisions made at a confidentiality-safe abstraction level.

Tradeoffs

Improving architecture inside a live product means choosing migration paths that preserve delivery velocity.
Some proof must remain narrative because employer systems and metrics are private.
The work favors operational judgment over flashy greenfield architecture.

Role

Senior Software Engineer contributing to mobile architecture, stabilization, and product delivery inside a scale-up environment.

What This Proves

Juan has shipped within structured engineering teams, not only solo projects.
He can work with production constraints, cross-market complexity, and existing systems.
He brings product engineering judgment to mobile work where user trust and business flows are connected.