Description

iOS Engineer with 3+ years building production-grade apps in Swift and SwiftUI. Worked on Pull & Bear (Inditex) — 350K+ daily active users, 4.7★ App Store rating, 99.53% crash-free.

I build end-to-end iOS apps from architecture to App Store: SwiftUI, SwiftData, CloudKit, StoreKit 2, HealthKit, and Swift Concurrency (Swift 6.2). Clean Architecture, MVVM, zero third-party dependencies where possible.

What I bring to freelance projects:

• Production experience in a 350K+ DAU codebase — I know what scales and what breaks

• Full ownership: architecture, UI, backend integration, App Store submission

• Full-stack capability when needed (Node.js + Supabase + AWS S3, built for HitBosss)

• Multi-platform: iPhone, iPad, Mac from a single SwiftUI codebase

• Accessible, tested, and documented code by default

Recent personal projects: Ladushki (Russian learning app — iPhone, iPad, Mac, StoreKit 2 freemium, 62 Swift Testing unit tests) and HitBosss (fitness strength ranking — co-founded, built full iOS + API + DB solo from scratch, in the App Store).

Available for: iOS app development, SwiftUI migrations from UIKit, architecture consulting, App Store optimization, and technical reviews.

Remote · EU, UK & US time zones · Spanish (native) · English (fluent)

Languages

Spanish
Native or bilingual
English
Fluent
Russian
Basic

Workplace preferences

Remote only

Primarily works remotely

Freelancer
Forma — iOS Fitness App (Training · Body · Nutrition)
January 2026 - Today (5 months)
• 100% native — zero third-party dependencies, all Apple frameworks
• Training mesocycles, body tracking, and nutrition in a single app
• Automatic CloudKit sync across all devices — no account required
• Live Activity on Lock Screen and Dynamic Island via ActivityKit (rest timer)
• Bidirectional HealthKit integration: weight, calories, steps
• Swift Charts for progress visualizations • MVVM with @Observable ViewModels and protocol-based dependency injection
• Swift 6.2 strict concurrency: zero warnings, @concurrent for CPU-intensive work
• 2 languages from day 1 (EN + ES via String Catalogs)
SwiftUI Swift Concurrency Swift Testing MVVM Git
Freelancer
Ladushki — Russian Learning App
January 2026 - Today (5 months)
• Single SwiftUI codebase — runs natively on iPhone, iPad, and Mac
• SwiftData + CloudKit for automatic multi-device sync
• StoreKit 2 freemium: 3-day trial, €4.99/mo or €41.99/yr • Sign in with Apple authentication
• 640+ vocabulary items, 280+ exercises across 4 levels × 10 units
• 5 exercise types: multiple choice, ordering, fill in blank, translation, matching
• Full accessibility: VoiceOver, Dynamic Type, Reduce Motion, Rotor
• 62 unit tests + 11 accessibility UITests — all passing
• Swift 6.2 strict concurrency: zero warnings, zero DispatchQueues, zero third-party libs
Swift Concurrency SwiftUI Swift Testing Git MVVM
HitBosss
Cofounder & iOS Software Engineer
August 2024 - Today (1 year and 10 months)
Co-founded a social competition platform and built the entire technology stack from scratch.
• Sole iOS developer and co-founder — designed and built the full product from zero
• iOS: SwiftUI with Clean Architecture, MVVM, and Coordinator pattern
• Video pipeline: record or pick from library → validate → upload to AWS S3
• Global ranking: sortable by points, weight lifted, gender, and location • Social features: user profiles, groups, and events
• Backend: Node.js REST API with Supabase (PostgreSQL)
• Zero memory leaks — profiled end-to-end with Xcode Instruments
• Live on the App Store
SwiftUI Swift Concurrency Swift Testing Clean Architecture Backend Service Development