Santiago

Senior / Staff-Level Engineer

Bustamante

Product-driven mobile & client architecture.
+ years building at scale.

About

Engineer with + years building and scaling mobile products end-to-end. I drive architectural decisions, shape technical strategy, and bridge the gap between product vision and engineering execution, focused on iOS & client architecture at scale, with a product-first mindset across startups and established teams worldwide.

Mobile & Client Architecture

System design, platform strategy, iOS & Swift at scale.

Product-Driven Engineering

Translating product vision into technical execution.

Staff-Level Leadership

Architectural ownership, mentoring, cross-team influence.

Portfolio

Selected Work

Brick

Brick

Senior Mobile Engineer

Digital wellness app combining NFC hardware with iOS to block distracting apps. 4.9★ with 34K+ reviews.

Swift SwiftUI Kotlin Multiplatform Jetpack Compose NFC

FREE NOW

FREE NOW (by Lyft)

Senior iOS Engineer

Europe's multi-mobility app across 9 countries. Worked on rider app B2B area: payment flows, A/B testing, feature flags. 4.8★ with 50K+ reviews.

Swift SwiftUI UIKit A/B Testing Feature Flags

Dynatrace

Dynatrace — Mobile SDK

Senior iOS Engineer

Enterprise observability platform. Built the Mobile SDK instrumenting iOS and Android apps for performance monitoring.

Swift Objective-C Kotlin Java SDK Development

Stocktwits

Stocktwits

Senior iOS Engineer

The largest social network for investors and traders with real-time market insights. 4.8★ with 165K+ reviews.

Swift SwiftUI UIKit Real-time Feeds WebSocket

PagoEfectivo

PagoEfectivo (Paysafe)

Lead Mobile Engineer

Digital wallet and cardless payment platform in Peru. Led mobile team, architecture, and vendor negotiations.

Kotlin Swift Mobile Architecture Fintech Vendor Integration

Tpaga

Tpaga

Senior iOS Developer

Colombian mobile wallet with virtual Visa debit, QR payments at 400K+ merchants.

Swift UIKit Fintech Payments

Paven

Paven

iOS Lead & Architect

Employee financial wellness platform with personalized guidance. First enterprise client: Meta.

Swift UIKit iOS Architecture

MedAnswers

MedAnswers — Fertility

Mobile Director

Digital health platform connecting patients with fertility specialists. Led iOS and Android teams, defining mobile architecture.

Swift Kotlin Mobile Architecture Team Leadership

Rally Rd.

Rally Rd.

Lead iOS Engineer

Alternative asset investment platform for fractional equity in collectibles. Featured in NYT, WSJ, Forbes. 4.8★.

And many more projects…

+ years of mobile products across startups and enterprises worldwide

Connect

Let's talk

LinkedIn GitHub Stack Overflow Resume