Open to opportunities

Frederico Schnekenberg

@fredschnek

Senior iOS engineer modernizing high-scale apps with modular architecture, reliability improvements, and Swift performance.

Brazil

Message

What I'm looking for

I’m looking for a senior iOS role where I can modernize Swift/SwiftUI codebases with clean modular architecture, strengthen reliability and testing, and use AI-assisted workflows to accelerate debugging and delivery in a cross-functional team.

I’m a Senior iOS Engineer with 10 years of experience building consumer iOS apps and shared frameworks across e-commerce, streaming, fintech, and mobility. I specialize in modernizing legacy codebases, designing modular architectures, and improving reliability, performance, and developer experience.

In my current role (DevRank / Disney’s Hulu team), I contribute to FY26 OKRs focused on auth reliability, playback experience, quality engineering, and client-side experimentation. I’ve worked toward outcomes like improving login success (+2%), reducing forced-logout rate (-20%), increasing watch hours (+2%), boosting unit test coverage (+20%), and cutting hitch frequency (-50%), while strengthening pre-release quality gates and RCA-driven stability.

I also accelerate delivery using AI-assisted workflows—building custom IDE agents and prompt engineering flows to speed up code analysis, test automation, and crash-log triage across iOS teams. I integrate observability and experimentation signals (e.g., Conviva, Firebase/A-B testing) and support safer code paths under high scale.

Previously, at DevRank (PicPay) I shipped SwiftUI onboarding flows, led the invoice management module, built Pix features (QR and installment flows), and delivered payment-link generation. Earlier, I developed reusable Disney ecosystem components (Swift/SwiftUI/UIKit), supported server-driven UI approaches, mentored teams on SOLID and iOS testing best practices, and led bike-sharing app architecture at Tembici for ~300K daily users—always pairing clean design with measurable engineering quality.

Experience

Work history, roles, and key accomplishments

Current

Senior iOS Engineer

Current

DevRank

Jan 2025 - Present (1 year 4 months)

Delivered Hulu iOS OKRs across auth, playback engagement, and client quality—reducing forced-logout rate by 20%, improving login success by 2%, and increasing watch hours (post-play) by 2%. Improved stream reliability (Conviva degraded sessions 5.9% → 4.9%), raised unit test coverage by 20%, and cut hotfix frequency by 50%.

Swift SwiftUI UIKit Combine Async Await XCTest A B Experimentation MCP

Senior iOS Engineer

DevRank

Jan 2024 - Jan 2025 (1 year)

Built PicPay merchant iOS features including new PJ onboarding flows, invoice management (view/filter/export), and business Pix experiences. Implemented Pix QR and installment flows supporting up to 12x, and developed payment-link generation for sharing via WhatsApp/DMs.

Swift SwiftUI UIKit Async Await Combine Swift Package Manager Firebase Analytics Amplitude Events IOS Testing

Senior iOS Engineer

ArcTouch

Jan 2023 - Jan 2024 (1 year)

Built reusable UI and service components used across multiple Disney apps (ABC, DisneyNow, FX Now, Freeform, NatGeo) for faster, consistent integration. Shipped scalable framework-style components to improve quality and developer efficiency across the ecosystem.

Swift SwiftUI UIKit Component Architecture

Senior iOS Engineer

Lumenalta

Jan 2023 - Jan 2023 (0 months)

Developed and maintained Bally’s Live iOS app used by millions of users worldwide. Delivered new features with cross-functional teams while focusing on performance improvements and strengthening quality through code reviews, unit tests, and automated UI testing.

Swift Performance Optimization Code Review UI Testing iOS app development

Senior iOS Engineer

ArcTouch

Jan 2022 - Jan 2023 (1 year)

Contributed to rebuilding Disney’s ABC News app and shared frameworks used across Disney Group applications. Implemented server-driven UI and white-label flexibility using SwiftUI alongside legacy UIKit components with unit-test-backed reliability.

Swift SwiftUI UIKit Server Driven UIs Unit Testing Design Patterns

iOS Specialist

Zup IT Inovacao

Jan 2021 - Jan 2022 (1 year)

Developed Itaú’s Íon investment iOS app and applied SOLID principles to improve maintainability and scalability. Produced technical documentation to streamline development and onboarding, and mentored junior engineers on architecture and best practices.

iOS Development Swift SOLID Architecture Technical Documentation Mentoring Maintainability Best Practices

iOS Engineer & Tech Lead

Tembici

Jan 2019 - Jan 2020 (1 year)

Led iOS development for bike-sharing apps (Bike Itaú, BA Ecobici) supporting 300K daily users across South America. Optimized real-time geolocation and bike availability flows and improved responsiveness using networking and caching strategies under high usage.

Swift iOS Development Geolocation Networking Caching Scalability Performance Optimization Reliability Engineering

iOS Developer

Via Varejo

Jan 2018 - Jan 2019 (1 year)

Built iOS apps for Casas Bahia and Ponto Frio under tight deadlines while keeping the codebase maintainable and scalable for peak traffic events.

iOS Development Swift Scalability Performance Optimization Code Quality

iOS Developer

TOTVS

Jan 2017 - Jan 2018 (1 year)

Led iOS development for the LMS team by applying clean architecture and introducing TDD. Improved reliability and reduced production defects through test-driven practices and stronger code quality.

Swift iOS Development Clean Architecture TDD Unit Testing Reliability Engineering

iOS Developer

Esparta Tecnologia e Inovacao

Jan 2016 - Jan 2017 (1 year)

Built and shipped multiple iOS apps integrating REST APIs (JSON/XML), geolocation, and local/cloud persistence. Implemented CI using Jenkins and Fastlane to improve delivery workflow reliability.

Swift iOS Development REST APIs JSON Geolocation