Mobile Engineer
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Location
Remote (Brazil)
Seniority
Senior · 5+ years exp
Employment
Full-Time
Overview
Company
Impact
Profile match
Strider is a talent platform that helps companies in the United States hire vetted remote software developers from Latin America and other nearshore regions. Employers are matched with pre-screened engineers for dedicated teams or individual roles, while developers access remote jobs with international companies and support for career growth. The American company focuses on building nearshore development teams that work in North American time zones.
- This is a mobile-first, systems-oriented engineering role centered on a comprehensive fitness platform that combines exercise, sleep, nutrition, wearable, and sensor data to make health tracking more effortless and precise
- The exercise component focuses on functional fitness (box jumps, weightlifting, full-body movements), with the platform built on Swift for iOS, Kotlin Multiplatform (KMP) for shared mobile logic, and a TypeScript-based backend/platform layer
- The engineering scope goes beyond a conventional REST-based mobile app, spanning BLE-connected hardware, high-frequency sensor capture, local persistence and sync, firmware updates, and Apple Watch integration - with AI-assisted and agentic development as a core part of the daily workflow
- Own the iOS application and its technical direction, from architecture through release
- Design and maintain iOS architecture, and make technical decisions for the Apple platform
- Build production features and functionality in Swift
- Work extensively with Kotlin Multiplatform and manage Swift/Kotlin interoperability
- Contribute to shared Kotlin mobile modules where appropriate
- Build and maintain BLE/connected-device integrations
- Work with high-frequency sensor data and reliable local/cloud synchronization
- Contribute to firmware/OTA update functionality
- Support Apple Watch and companion-device integrations
- Collaborate with backend/platform engineers on APIs and contracts
- Contribute to TypeScript/Node.js backend or BFF work when needed
- Translate product and design requirements into production-ready implementations
- Review pull requests, participate in architecture discussions, and maintain engineering standards
- Help define testing strategies and improve automated coverage
- Debug complex mobile, networking, device and synchronization issues
- Use AI agents and AI-assisted tools as part of the everyday workflow, beyond simple autocomplete
- Establish reusable AI-assisted development patterns and project context
- Review AI-generated code critically and understand what's being shipped
- 5+ years of mobile development experience, with substantial production iOS experience
- Experience with Swift, building and maintaining production mobile applications
- Experience with Kotlin Multiplatform (KMP)
- Deep understanding of iOS architecture and native platform development
- Experience with applications beyond straightforward UI and REST API consumption
- Experience with complex application state, networking, persistence, or device integrations
- Ability to work across Swift and Kotlin boundaries
- Deep understanding of concurrency (Swift Concurrency, Kotlin Coroutines)
- Interest in AI-assisted and agentic software development, with the ability to clearly explain how AI tools fit into your engineering workflow
- Based in Brazil
- Strong communication skills in both spoken and written English
- Startup experience
- Experience with CoreBluetooth/Bluetooth Low Energy, connected hardware, watchOS/Apple Watch companion apps, firmware or OTA update systems, high-frequency sensor data, offline-first mobile systems, complex synchronization systems
- Ability to read TypeScript/Node.js and reason about API/BFF contracts between mobile and backend
- Bachelor's Degree in Computer Engineering, Computer Science, or equivalent
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