Anderson Kloss Maia

I'm looking for a Senior or Lead iOS role. Architecting and building production apps in Swift, SwiftUI, and UIKit, not just maintaining them. I do my best work on consumer and fintech products at scale, with teams that value clean architecture (MVVM, MVI, Composition Root), strong testing discipline, and safe, feature-flagged delivery using modern AI-assisted development. I work fully remotely from Brazil and am open to long-term B2B contractor engagements paid in USD.

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I'm a Senior iOS Engineer with over 11 years of experience building scalable, user-focused mobile apps in native Swift. My focus has always been craft: clean, testable architecture across Swift, SwiftUI, and UIKit (MVVM, MVI, Coordinators, Composition Root, dependency injection). Much of my recent work is in payments and fintech. At PayPal I worked on an App Switch-based checkout flow spanning a merchant app, a mobile SDK, and the native PayPal app, and contributed to the public Braintree iOS SDK, which instilled the discipline of public API design, backward compatibility, and the rigorous testing SDKs demand.

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At Upside, I led a large-scale iOS rebranding initiative, building a SwiftUI design system from scratch that was later adopted across multiple teams. I also work at the intersection of iOS and AI-assisted development. I built with others a LLM-first end-to-end test-automation framework at PayPal, featuring AI-readable test structures, structured failure output, auto-diagnosis, and Claude-assisted test generation and triage, and I lean on LLM-first workflows to move faster without sacrificing quality.

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Earlier roles at Route, Magazine Luiza, and Sicredi grounded me in consumer, marketplace, and banking products at scale. I care about maintainability, safe feature-flagged rollouts, and helping teammates ship with confidence. I work fully remotely from Brazil and enjoy long-term engagements where I can own iOS deeply and grow alongside the product.

• Led a large-scale iOS rebranding initiative at Upside, building a SwiftUI design system from scratch that was later adopted across multiple teams.
• Contributed to PayPal's public Braintree iOS SDK, working to the standards public SDKs demand: careful public API design, backward compatibility, and rigorous testing.
• Built an LLM-first end-to-end test-automation framework at PayPal, with AI-readable test structures, structured failure output, auto-diagnosis, and Claude-assisted test generation and triage.
• Worked on PayPal's App Switch checkout, a payment handoff spanning a merchant app, a mobile SDK, and the native PayPal app.
• 11+ years as a senior and lead iOS engineer across fintech, payments, consumer, and marketplace products (PayPal, Upside, Route, Magazine Luiza, Sicredi).
• Repeatedly modernized legacy iOS codebases: Coordinator-based navigation, Composition Root dependency injection, feature-flagged rollouts, and stronger test coverage.

MeuDeputado — github.com/ndrsKloss/MeuDeputado
An iOS app that tracks Brazilian Congressional spending, pulling official data from the Chamber of Deputies (Câmara dos Deputados) with monthly updates so citizens can see how legislators spend public money. Built in Swift and SwiftUI as a full modern rebuild of a 2015 Apple Developer Academy capstone (originally Swift 2 / iOS 9), so it also doubles as a legacy-to-modern migration. Open source, with a publicly tracked roadmap.

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BrazilCovid19Vaccine — github.com/ndrsKloss/BrazilCovid19Vaccine
An iOS app visualizing COVID-19 vaccination progress across Brazil and its states, sourcing open data from the covid19br project. Built in Swift, SwiftUI, and Combine, featuring iOS 14 home-screen widgets and a reactive input/output view-model pattern, with unit and UI tests. MIT licensed.