High expertise in iOS development, specially on tackling complex problems. Focus on "done is better than perfect", always making the best tradeoffs between effort and value. With my management experience, I can either coordinate long-term projects with larger teams or take on short-term tasks to achieve quick wins. I'm also strong in troubleshooting and navigating unknown codebases, which is helpful to figure out issues with existing apps or simply adding new features.

Senior full‑stack iOS engineer (Swift/SwiftUI/UIKit) who can ship the mobile app + the backend end‑to‑end (Node.js + TypeScript). If you have an existing app that needs to scale, stabilize, or move faster, I can step in, quickly get context, and start delivering. What I do best • iOS/iPadOS/macOS development in Swift (SwiftUI + UIKit) • API design + implementation (Node.js/TypeScript), Firebase, REST/GraphQL integrations • Architecture & codebase health: MVVM, DI, modularization, testing • Performance & reliability: profiling, crash fixes, memory leaks, smooth UI • Legacy modernization: UIKit → SwiftUI, Objective‑C → Swift Typical engagements 1) Audit (3–5 days, fixed price): quick assessment + prioritized plan + first fixes 2) Stabilization/feature sprint (1–2 weeks, fixed): ship milestones, unblock releases 3) Ongoing retainer (monthly): predictable delivery cadence + support Recent outcomes ✓ Built apps with 100k+ monthly active users ✓ Helped startups gain early adopters via MVP + TestFlight ✓ Modernized legacy codebases and improved performance/stability If you share your repo/API constraints and your top 1–2 goals for the next 2 weeks, I’ll propose a tight plan with milestones.

Enthusiastic software developer. I have started programming since 2003 while I had been studying at school. Since that time programming become my lovely work. My Skills: – Swift, Objective-C, JavaScript, C/C++, Ruby, Java, Python, PHP, ActionScript – iOS, visionOS, watchOS, tvOS, macOS, Android, Node.js, Ruby on Rails – SwiftUI, UIKit, Storyboards, Xib, SnapKit, AVFoundation – Game Development: Unity (Unity3d), Cocos2d, SpriteKit, Metal – AR - Augmented Reality: ARKit, ARCore, RoomPlan, SceneKit – Xcode, AppCode, IntelliJ IDEA, Android Studio – AI tools / agents: Claude Code, Codex, Cursor – Git, Mercurial, SVN – Github, Bitbucket, Gitlab – CocoaPods, Carthage, Swift Package Manager – Fastlane, SwiftLint – TDD/BDD: XCTest, Quick, Nimble, Unit tests, UI tests – SwiftData, CoreData, Realm, SQLite, MySQL – Swift Concurrency (Async/Await, Tasks, Actors), Combine – Clean Architecture, MVVM, FRP, RxSwift – Firebase (Firestore, Realtime Database, Authentication, Functions, Storage, Remote Config, Analytics), Supabase, AWS – API integration: Facebook, Twitter, Instagram, Venmo, Coinbase, Google Maps and many other

Hey I'm Eric! I'm a highly skilled iOS developer that's ready to build your iOS app from the ground up. A Little About My Background ------------------------------------ I've built over 20 iOS apps from scratch, launched 9 on the App Store, and sold two of them! The most recent app I built for a client was called Kwiks – a TikTok-styled social media app. I came on board after the app was already in development, and improved video feed performance so dramatically that they offered me a full-time position. I also have a collection of personal apps which you can view by searching "Eric Solberg" on the App Store. The one I'm most proud of is a social networking app called "#Social - Meet people like you". It incorporates a fully fledged in-app messaging feature and implements complex database queries (using Firebase). My most popular app so far ranked in the top 100 "Entertainment - Top Paid" category on the App Store – with over 100,000 organic downloads in less than a year – before it was acquired. What I Offer --------------- - Extensive experience in the iOS app space, including feature ideation, software development, app launch and marketing knowledge, and everything in between. - Perfectionist mindset – I pride myself in exceeding expectations and delivering an excellent product. That means delivering on time, on budget, and with code quality at the forefront. - Fast development – I obsess over your project from start to finish, and can deliver your app in weeks, not months. - Communicative availability – I almost always have my phone on me, so message me anytime! Technical Skills ------------------- • Swift • Xcode • Storyboard and/or UIKit (No SwiftUI) • All Apple Frameworks • Any 3rd-party framework • Firebase Master • UI/UX Design w/ Figma (if needed) Conclusion -------------- Thanks for considering me for your project. If you think we could be a good fit, or even if you just have a couple questions, feel free to reach out. At the very least, I can give you some answers and point you in the right direction. I look forward to speaking with you, - Eric

I’m a Senior iOS Developer with 10+ years of professional experience and an MS in Computer Science. I help companies design, build, and scale high-quality iOS applications that are reliable, intuitive, and crash-free. 🚀 What I Bring Proven iOS Expertise – Swift, SwiftUI, Objective-C, and cross-platform (React Native, Kotlin). BLE Mesh & Firmware Communication – Experience developing apps that integrate with BLE Mesh lighting systems and embedded firmware, including device provisioning, node status monitoring, and OTA updates. End-to-End Delivery – From architecture & development to App Store release & maintenance. Payments & Fintech – Integrated Apple Pay, Revolut Pay, VISA SDKs and built secure banking solutions. Performance & Testing – Increased code coverage from 20% → 75% and delivered 99% crash-free user rate. Agile Collaboration – Worked with international teams in Agile/Scrum, mentored juniors, and led technical interviews. 🏆 Highlights Travel & Flight Booking App – migrated core pages from Objective-C to SwiftUI, integrated payment SDKs. Firebase integration, Remote Config & Analytics & Crashlytics. iOS Banking App – led full rebuild with modular architecture, achieving 80%+ test coverage. Indoor AR Navigation App – developed custom pedometer & beacon-based positioning system for a large hospital. BLE Mesh Lighting Control App – built iOS app for provisioning, controlling, and monitoring BLE Mesh devices with firmware-level communication. 🔧 Tech Stack iOS: Swift, SwiftUI, Objective-C, XCTest, XCUITest, Snapshot Testing Connectivity: BLE Mesh, Bluetooth Low Energy, Firmware Communication, OTA updates Backend & Cloud: Node.js, Flask, FastAPI, AWS, Azure, Docker, Kubernetes ML/AI: TensorFlow, PyTorch, Generative AI, Computer Vision, Medical Imaging ✅ If you need a reliable senior engineer who can deliver production-ready, scalable apps, let’s connect. I can help with new builds, app modernization, bug fixing, and advanced features like BLE Mesh integrations, payments, AI, or cloud backends. Below I am sharing a few categories of apps that I have developed from scratch. *Flight Booking Application * Online Payment Application * Banking Application * Fintech Application * Navigation and Indoor Navigation Application * Image processing *Bluetooth Mesh *Bluetooth - BLE * Document Management && E-sign Application * E-commerce Application * Beacon Based Application * Photo Editing Application

🧠 I don’t just code — I lead builds to launch. 🔧 Complex apps. Clean handoffs. No noise. 💼 Apple-level quality, on your team. *** About Me *** I've worked as a senior iOS developer and technical lead for the last 14 years including working on an internal project at Apple. Previously I've worked on mobile apps across a number of different sectors with clients such as RBS, Sage, McDonalds, WIlliam Hill, and Roche / Genentech in the pharmaceutical space. More recently I've become specialised in Open AI (ChatGPT) having created the CodeBrain for Mac based on Open AI / Chat GPT. I'd be happy to look at taking on your mobile projects. Worked on projects for: Bacardi McDonalds Diageo Drinks Roche William Hill UBS Resmed AA Genentech Medex Media Secret Escapes Abelson Taylor Channel 4 Homebase Sequence Addison Lee Institute of Physics Perfect Day Story Works Digital Argos E Med Fusion Iris Digital Towers Watson AXA UK Ericsson King of Shaves RBS AXA DE Flix Premiere Knowledgepoint 360 Group Sage

I've been working as an iOS Developer for 14 years. Experienced in both Swift and Objective-C, I have developed apps for the iPhone, iPad, Apple Watch and Apple TV. I've worked on Android too, both Java and Kotlin. I have submitted many apps to the App Store, with complex interfaces, extensive web service communication, and multimedia content. Some of these apps got good references in the press, and one of them, Back in Time, was selected by The New York Times as one of the Top 10 iPad apps of the year.

I build iOS apps that make money. If yours doesn't, we should talk. Most iOS developers ship features. I ship revenue. In the last 8 years, apps I've built have generated $500K+ for my clients, not because I write "clean code" (everyone claims that), but because I obsess over the 3 things 90% of developers ignore: conversion, retention, and App Store ranking. What I actually do: Build native iOS apps in Swift/SwiftUI that get featured, ranked, and downloaded. Then I make sure they don't leak users through a bad onboarding, broken paywall, or App Store listing nobody clicks. A few receipts: - Telehealth app → 10K patients, $500K seed round (HIPAA-compliant, Core Data, CloudKit sync) - DTC e-commerce app → 312% mobile revenue lift (Apple Pay, custom checkout that doesn't suck) - EdTech app → 4.9★, featured in "Apps We Love" (SwiftUI, built in 7 weeks) - Social app → 50K DAU, 1M+ messages/day (Firebase, real-time, zero downtime in 18 months) How I work: I don't take every project. I take 2 per quarter. If we're a fit, you get: - A working TestFlight build in week 2, not week 8 - Direct access to me, not an account manager - An opinionated partner who'll push back when your idea is wrong (and tell you why) - A 99.8% crash-free app, or I fix it on my dime I'm probably not for you if: - You want the cheapest developer on Upwork (I'm not) - You need someone to just "code what I tell them" (I'll ask why first) - You don't have a clear sense of who your user is (I'll help, but you have to care) I'm exactly right for you if: You've got a real product, a real budget, and you want it built by someone who's shipped apps that people actually use and pay for, not someone padding a portfolio.

🚀 Top-Rated and Expert-Vetted Senior iOS Developer with 10 Years of Mobile Expertise 📱 Are you in need of a seasoned iOS developer with a wealth of experience and a proven track record in building top-notch mobile apps? Look no further! I'm here to enhance your projects and take them to new heights. ✨ Why You Should Collaborate with Me: 📚 Master's Degree in Computer Science: My deep academic background ensures a strong foundation in software engineering principles, empowering me to craft efficient, high-quality code. 🤝 Proactive and Detail-Oriented: I bring a proactive mindset and keen attention to detail to every project, delivering not just solutions but polished products that shine. 🌍 Global Experience: I've partnered with startups worldwide, from the USA and UK to The Netherlands. This international exposure has enriched my skill set and allows me to bring diverse perspectives to your projects. 📱 Full-Stack Expertise: I specialize in developing native iOS apps using Swift, creating elegant and intuitive user interfaces and experiences. From ground-up builds to enhancing existing apps, I do it all. 🤖 Collaborative Cross-Functional Work: I thrive in cross-functional teams, collaborating seamlessly with product owners, designers, mobile developers, and backend experts to create holistic solutions. 🧩 Strong Problem-Solving Skills: Complex challenges don't deter me; I embrace them with analytical prowess and innovative thinking. 🏆 Recent Achievements: 🌟 I spearheaded the development of an e-commerce app for an Amsterdam startup that raised a staggering $120 million. 🌟 Another success story is a second phone number app, delivering calls and messaging features. Ready to take your projects to the next level, I'm excited to work with you and your team. Let's build the future together! 📈💼📱 ⚙️ Tools and Skills: 🛠️ Development Tools: Xcode Swift SwiftUI RxSwift Combine Apollo GraphQL Jira Confluence Git SwiftLint SwiftGen Dependency Injection 🎨 UI/UX Design: Figma Sketch Interface Builder Storyboards SwiftUI Preview Lottie 🧩 Frameworks and Libraries: Alamofire Moya Facebook SDK Algolia Iterable RevenueCat Twilio Stripe Realm Stream Chat One Signal Kingfisher 📱UI: UIKit Foundation SnapKit 📊 Analytics: Segment Firebase Google Analytics Mixpanel Amplitude Rollbar Crashlytics 🐞 Debugging and Testing: XCTest XCUITest Quick Nimble SwiftyMocky Embassy EnvoyAmbassador RxBlocking 🏛️ Architecture: Multi-modular, MV MVC MVP MVVM VIPER 📋 Methodologies: Agile Scrum Kanban 🚀 CI: Bitrise Jenkins

🚀 Staff iOS Engineer (10+ yrs) — Real-time Video/VoIP & AI Integration I build and fix iOS/macOS apps fast—clean, stable, and ready to ship. Previously at Fanatics (Live & Collect), Agora (macOS Tech Lead), and RingCentral (Staff Engineer). I specialize in two high-value areas: real-time audio/video systems and production AI integration. ✅ Selected impact • Reduced crash rate 10x through systematic stability work (crash/ANR triage, threading, memory) • Improved user NPS +40% via closed-loop quality optimization • Evolved a live platform from viewer-only → full broadcaster (streaming + interactions) • Built ANR monitoring (main-thread blocking detection) → 3x faster issue resolution • Experience shipping for massive-scale consumer products (e.g., bilibili-level traffic) 🎥 Real-time audio/video & streaming (production) • Live streaming & video conferencing: LiveKit / Agora SDK / Amazon IVS • AVFoundation capture/render pipelines, recording/upload, performance tuning • CallKit + PushKit VoIP calling (background, reconnect, audio routes, reliability) • Real-time interactions: auctions, voting, chat (WebSocket / GraphQL Subscriptions) • Screen sharing: iOS App Extension + macOS plugins • Socket/IM architecture experience; solid networking fundamentals (TCP/UDP) 🤖 AI integration • OpenAI / Claude API integration for user-facing features • HealthKit + Apple Watch data pipelines (sleep/HR/activity/workouts) • Prompt & context management, on-device + cloud orchestration for personalized insights 🏗️ Architecture & engineering • Clean Architecture / SOLID, protocol-oriented DI, modular design • TCA & MVVM (migration and coexistence), Swift Concurrency (async/await, Actors) • Swift + Objective-C, pragmatic refactors, long-term maintainability 🧪 Quality & delivery • Tests: XCTest/XCUITest, snapshot tests; TDD when valuable (Quick/Nimble) • CI/CD: Fastlane, Jenkins/GitHub Actions/Xcode Cloud, TestFlight/App Store release • Logging/analytics (e.g., Firebase/Crashlytics) to locate root causes quickly 🛠️ How I work • Start with a short paid assessment → confirm scope, estimate, and risks • Milestones with demos + clear acceptance criteria • Strong communication, pragmatic testing, and maintainable Swift • Available 40 hrs/week, fluent in English, timezone-friendly and responsive 💻 Equipment: Mac Studio (M1 Max, 32GB), dual 28” 4K monitors, 1Gbps fiber. If you’re building live video/VoIP features, integrating AI into an app, or need to stabilize and scale an existing codebase, feel free to message me—happy to review your scope and propose a plan.