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I'm Alex Nagy, a Senior iOS Engineer based in Granada, Spain, with 15+ years designing, building, and shipping 40+ production mobile apps. As the founder of Rebeloper LLC, I work as an independent contractor delivering end-to-end iOS solutions, from scoping to App Store release, across AI, fintech, marketplaces, and real estate. I love creating clean, minimal user experiences and collaborating with clients to translate operational requirements into practical mobile solutions. I focus on performance, usability, and long-term maintainability, and I enjoy mentoring teams and delivering production-ready apps with maintainable code and clear documentation.…I'm Alex Nagy, a Senior iOS Engineer based in Granada, Spain, with 15+ years designing, building, and shipping 40+ production mobile apps. As the founder of Rebeloper LLC, I work as an independent contractor delivering end-to-end iOS solutions, from scoping to App Store release, across AI, fintech, marketplaces, and real estate. I love creating clean, minimal user experiences and collaborating with clients to translate operational requirements into practical mobile solutions. I focus on performance, usability, and long-term maintainability, and I enjoy mentoring teams and delivering production-ready apps with maintainable code and clear documentation.

Alex Nagy

App Developer, Programmer, Web Developer, +2

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I'm Alex Nagy, a Senior iOS Engineer based in Granada, Spain, with 15+ years designing, building, and shipping 40+ production mobile apps. As the founder of Rebeloper LLC, I work as an independent contractor delivering end-to-end iOS solutions, from scoping to App Store release, across AI, fintech, marketplaces, and real estate. I love creating clean, minimal user experiences and collaborating with clients to translate operational requirements into practical mobile solutions. I focus on performance, usability, and long-term maintainability, and I enjoy mentoring teams and delivering production-ready apps with maintainable code and clear documentation.…I'm Alex Nagy, a Senior iOS Engineer based in Granada, Spain, with 15+ years designing, building, and shipping 40+ production mobile apps. As the founder of Rebeloper LLC, I work as an independent contractor delivering end-to-end iOS solutions, from scoping to App Store release, across AI, fintech, marketplaces, and real estate. I love creating clean, minimal user experiences and collaborating with clients to translate operational requirements into practical mobile solutions. I focus on performance, usability, and long-term maintainability, and I enjoy mentoring teams and delivering production-ready apps with maintainable code and clear documentation.

Available to hire

I’m Alex Nagy, a Senior iOS Engineer based in Granada, Spain, with 15+ years designing, building, and shipping 40+ production mobile apps. As the founder of Rebeloper LLC, I work as an independent contractor delivering end-to-end iOS solutions, from scoping to App Store release, across AI, fintech, marketplaces, and real estate.

I love creating clean, minimal user experiences and collaborating with clients to translate operational requirements into practical mobile solutions. I focus on performance, usability, and long-term maintainability, and I enjoy mentoring teams and delivering production-ready apps with maintainable code and clear documentation.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Hungarian

Fluent

Romanian, Moldavian, Moldovan

Fluent

Work Experience

Senior iOS Engineer at BadgerMaps

March 1, 2026 - June 1, 2026

Modernized a top-rated production app (4,000+ files, 50+ screens) from UIKit/Storyboards to SwiftUI within a 25+ engineer cross-platform team. Migrated the entire codebase to Swift Concurrency (async/await) for safer, more maintainable code. Shipped a flagship Voice-to-Text feature end to end, from design through App Store release. Introduced an organization-tailored Claude Code skill set to the engineering team, and authored an estimation skill that produces precise story/task/subtask estimates, replacing developer guesstimation with data-driven planning.

Senior iOS Engineer (Independent Contractor) at Rebeloper LLC

January 1, 2011 - Present

Independent iOS consultancy delivering contract work for clients, embedded in their teams from scoping to App Store release. Architected and shipped 40+ production iOS apps from concept to App Store for clients across AI, fintech, marketplaces, and real estate. Designed modular SwiftUI architectures (MVVM, dependency injection) that accelerated feature delivery and made codebases easier to test and maintain. Led UIKit-to-SwiftUI migrations and adopted async/await Swift Concurrency, modernizing legacy code for safety and long-term maintainability. Built reusable internal SDKs (networking, API abstraction) reused across client projects, cutting integration time by 35% and standardizing code quality. Optimized app startup time, runtime performance, and data-layer scalability. Integrated Stripe, Firebase (Auth, Firestore, Messaging), and OpenAI/ChatGPT APIs to ship payments, real-time data, and AI features end to end. Owned the full delivery lifecycle: technical scoping, architecture, rele