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~/seif-kobrosly$whoami

Seif
Kobrosly

Lead iOS engineer with 10+ years building and scaling mobile apps for millions of users. Clients include the NBA, CDC, U.S. Naval Research Laboratory, CareCredit, Publix Super Markets and the U.S. State Department. Specialized in Swift concurrency, modular architecture, and modernizing legacy codebases, with Python/FastAPI backends to support mobile platforms.

Lead iOS Engineer

West Palm Beach, FL

Available for work

GitHubLinkedIn
10M+
Users served
NBA · CareCredit · CDC
10+
Years experience
Swift · SwiftUI · UIKit
5+
Federal clients
CDC · NRL · State Dept
5+
Languages
Swift · Python · ObjC · JS

02Experience

05/2026 – Present

Publix Super Markets

Contract · Remote

Lead iOS Engineer

SwiftSwiftUIUIKitMVVMasync/await
  • Contracted as a Lead iOS Engineer, contributing to mobile initiatives at one of the largest employee-owned supermarket chains in the U.S.

07/2018 – Present

Apptitude Labs

West Palm Beach, FL

Founder

SwiftSwiftUIFastAPIPythonPostgreSQLBLECore Data
  • Leverages Claude Code as a core part of the development workflow for rapid prototyping, code review, and architectural decision-making across client engagements

Centers for Disease Control and Prevention — Contract

  • Developing the public-facing STI Tx Guide iOS app, improving accessibility, usability, and clarity for clinicians and public health professionals
  • Modernized legacy codebase, implementing Swift best practices, modular architecture, and improved maintainability
  • Delivered UI/UX enhancements to streamline navigation, reduce cognitive load, and align the app with CDC design standards
  • Collaborated with medical experts, product teams, and QA to ensure clinical accuracy and regulatory compliance
  • Implemented secure data handling and local Core Data storage for offline access, aligned with federal privacy requirements
  • Led transition toward scalable, testable code, improving the velocity of future updates and long-term sustainability

U.S. Naval Research Laboratory — Contract

  • OTTAR Mobile App: Led development of a native iOS app enabling soldiers to capture and annotate munition images; integrated Swift async/await for performant asynchronous operations
  • Designed FastAPI/PostgreSQL backend for secure, scalable storage of images, metadata, and ML-based identification results
  • NeMo Mobile App: Developed a cloud-based iOS platform for observational data capture within aviation safety programs (LOSA)

Deed Ring

  • Developed a BLE-enabled iOS app for the QB708/QB806 Tasbeeh devices, enabling real-time tracking and syncing of user inputs from hardware to app
  • Implemented Bluetooth connectivity and communication protocols, handling device pairing, data streaming, and edge cases for reliable operation

01/2024 – 11/2025

National Basketball Association

Contract · Remote

Senior iOS Engineer

SwiftSwiftUIasync/awaitMVVMURLSessionAdobe AnalyticsAmplitude
  • Architected scalable iOS systems using Swift, SwiftUI, and async/await for millions of users; implemented modern concurrency patterns improving app stability and developer velocity
  • Redesigned Games feature with MVVM architecture using SwiftUI, reducing code complexity by 40% and enabling faster feature development while maintaining backward compatibility
  • Built GamesLibrary, a modular Swift Package standardizing REST networking and API response handling across teams
  • Refactored Apple Watch syncing via WatchSessionBridge, a reactive Swift Package using Combine and WCSession for automatic real-time preference updates with offline support
  • Improved WebView load times by 30% through advanced HTTP caching and optimized URLSession configuration
  • Refactored analytics integration across five providers including Adobe Analytics, Amplitude, and Kochava
  • Integrated complex entitlement checks — TV provider authentication, League Pass, Amazon Prime Video, and regional blackout enforcement

10/2022 – 01/2024

Method

Remote

Lead iOS Engineer

SwiftUIObservationLive ActivitiesSwift Package Managerasync/awaitApple Pay
  • Developed a reusable SwiftUI component library to accelerate delivery of future iOS apps
  • Built modular frameworks and proof-of-concept features to modernize internal architecture
  • Evaluated new Apple frameworks (SwiftUI, Observation, Live Activities) for potential adoption

CareCredit

  • Delivered features for an app serving over 1M users, improving usability, performance, and scalability
  • Spearheaded a full app re-architecture introducing Apple Pay for seamless transactions and leading a coordinator refactor that migrated complex UIKit flows to SwiftUI
  • Modernized the network layer with async/await, a custom retry mechanism, and improved error handling — increasing reliability and reducing failure surface
  • Enhanced app structure through dependency injection, improving code reusability and reducing coupling across modules
  • Improved the push notification system for timely delivery and better user targeting, integrating it cleanly into the overall app architecture

02/2021 – 09/2022

Mobomo

McLean, VA

Senior iOS Engineer

SwiftCore DataCI/CDOffline SyncUIKit
  • Embedded as Mobile Lead Architect with the U.S. State Department, driving mobile development initiatives and ensuring successful delivery
  • Spearheaded CI/CD automation, modernizing mobile development processes and establishing reliable, error-free deployment workflows
  • Collaborated with the CDC to develop a native iOS app supporting real-time data updates, offline storage, and concurrent functionality for a seamless field experience
  • Successfully launched the CDC STI Guidelines iOS app on the App Store, maintaining high standards for performance, data integrity, and user satisfaction

02/2015 – 02/2021

PRA Health Sciences

San Diego, CA (Remote)

iOS Engineer

Objective-CSwiftC#SDK DevelopmentSalesforce
  • Joined as the sole offsite engineer at Parallel 6, building the foundation before PRA Health Sciences acquired the company in 2017
  • Delivered multiple production apps for Sanofi, DHS, Pfizer, and San Diego Gas & Electric on the CaptiveReach (now Clinical6) platform
  • Built a Salesforce-connected iOS tool for internal clinical researchers, significantly improving collaboration and team productivity
  • Maintained and enhanced the CaptiveReach/Clinical6 SDK across Objective-C, Swift, and C# platforms
  • Mentored engineers and led App Store submission processes across multiple client releases

11/2013 – 01/2015

Booz Allen Hamilton

McLean, VA

Senior Consultant

iOSObjective-CiPadGoogle Glass
  • Worked within the Strategic Innovation Group (SIG), driving mobile solutions with lasting organizational impact
  • Developed an iOS prototype for the Defense Suicide Prevention Office (DSPO) that directly secured a significant government contract
  • Built a marketing iPad app showcasing the SIG group's capabilities and innovations to stakeholders and leadership
  • Led development of MemJog, a Google Glass app designed to assist individuals with Alzheimer's disease
  • First-place finish at a Department of Energy hackathon

03Skills

iOS & Apple
Swift/SwiftUI/UIKit/Combine/async/await/Core Data/WatchKit/Objective-C/App Extensions/Live Activities
Architecture
MVVM/Clean Architecture/TCA/Swift Package Manager/Modular Frameworks/Dependency Injection
Backend
Python/FastAPI/PostgreSQL/REST/GraphQL/WebSockets/Docker
Networking
URLSession/HTTP Caching/Alamofire/OAuth/BLE / CoreBluetooth
Analytics & Payments
Adobe Analytics/Amplitude/Kochava/Firebase/Apple Pay/StoreKit
Tooling
Xcode/Git/CI/CD/Tuist/Figma/Claude Code

Education

B.Sc Information Technology / Applied Computer Science

May 2012

George Mason University — Fairfax, VA

04Projects

iOS App

Athany

A beautifully designed Islamic prayer companion with location-based prayer times, silent-mode alarms, Live Activity countdowns, and a Qibla compass.

SwiftSwiftUIWidgetKitLive ActivitiesiOS 17+
App Store
iOS App

Deed Ring

Companion app for the Deed smart ring, a wearable tasbeeh counter that syncs dhikr counts over Bluetooth with prayer reminder notifications.

SwiftSwiftUICoreBluetoothBLEiOS 17+
App Store

Open source

  • XZap

    A disk cleanup utility for macOS developers that manages Xcode simulators, runtimes, and build caches through an interactive terminal UI.

    GoTUImacOSCLIDeveloper Tools
    GitHub

  • macOS Dot Files

    An opinionated macOS terminal setup with Zsh, Starship, Ghostty, and Neovim, swapping in modern CLI tools like eza, bat, and ripgrep.

    ZshStarshipNeovimDotfilesmacOS
    GitHub

  • Linux Dot Files

    chezmoi-managed dotfiles for Ubuntu servers (Raspberry Pi 5 and Beelink SER9 MAX), sharing configs with the macOS setup.

    chezmoiUbuntuZshDotfilesRaspberry Pi
    GitHub

  • Arch Desktop Dot Files

    A Catppuccin Frappé desktop for an Arch box: Hyprland with a Lua config, Plasma shortcuts, rofi, waybar, SDDM and Plymouth.

    Arch LinuxHyprlandWaybarCatppuccinShell
    GitHub

  • Pi-hole Macvlan RPi

    Self-contained Docker setup for Pi-hole and Unbound on a Raspberry Pi, using macvlan networking so each container gets a real LAN IP.

    DockerPi-holeRaspberry PiNetworkingDNS
    GitHub

05Writing

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