
Khaled El-Fakharany
Verified Expert in Engineering
Full-stack Mobile Developer
Manchester, United Kingdom
Toptal member since May 4, 2020
Khaled solves hard technical problems and delivers. He has architected multi-platform systems as CTO, built full-stack solutions solo, and led an 18-person development team as founder. He takes ownership of outcomes, not just code. Clients get a technical partner who understands their business, makes sound decisions under uncertainty, and stays accountable until the job is done.
Portfolio
Experience
- Swift - 9 years
- iOS - 9 years
- Mobile App Development - 9 years
- MacOS - 7 years
- Technical Consulting - 4 years
- CTO - 3 years
- FlutterFlow - 2 years
- Thunkable - 1 year
Preferred Environment
MacOS, Firebase, ARKit, Swift, TypeScript, React, Unity, CTO, Infrastructure
The most amazing...
...project is a media management platform used by NBC, CNN, BBC, and The Times—rebuilt from scratch to achieve 15-20x performance improvement in 6 months.
Work Experience
Senior Swift Developer
Honestum LLC
- Shipped an AI-powered lifestyle application across all 7 Apple platforms (iOS, iPadOS, macOS, watchOS, tvOS, visionOS, CarPlay) in 4 months with a unified codebase architecture.
- Implemented privacy-first architecture with all data processing on-device via CoreML, eliminating cloud dependencies and ensuring user data never leaves their devices.
- Architected a unified codebase maximizing code sharing while delivering native-quality experiences optimized for each platform's unique interaction patterns.
- Enabled the founder to pursue Series A funding with a functional cross-platform product demonstrating technical feasibility and market differentiation.
- Integrated SwiftData for seamless data persistence across all platforms with automatic iCloud synchronization for user convenience.
CTO
CanterVR
- Architected a four-component distributed system spanning Swift macOS server, Unity VR apps, React web portal, and Firebase back end serving as the technical foundation for the entire product.
- Pioneered ARKit spatial tracking in VR, achieving sub-10ms latency for natural head movement—a capability no competitor in the market has matched, creating a primary competitive differentiator.
- Led technical teams of up to 20 developers, including full-time employees and rotating freelancers, establishing documentation systems with 46 UML diagrams, enabling effective onboarding.
- Built a central operation manager (COM) system treating Unity as an enterprise platform rather than a game engine, enabling reliable business-critical VR operations.
- Promoted from senior macOS developer to CTO within four months based on demonstrated technical leadership and ability to architect complex systems.
- Designed a thermal management solution enabling sustained VR sessions by monitoring device temperature and dynamically adjusting performance to prevent overheating.
- Achieved pre-launch acquisition offers for the platform, validating its technical architecture and market positioning.
MacOS Developer
Quill Notes LLC
- Optimized audio transcription pipeline delivering measurable performance improvements by restructuring AVFoundation audio processing architecture.
- Implemented GCD background parallel queues enabling non-blocking audio processing during user interaction, maximizing multi-core CPU utilization.
- Applied media processing expertise from Axle Media projects to rapidly diagnose and resolve performance bottlenecks in the audio pipeline.
- Completed specialist engagement within a one-month timeframe with all performance objectives met, demonstrating deep macOS audio expertise.
MacOS Developer
B&S Collective Pty Ltd
- Built embedded macOS software serving as the brain of physical photobooth hardware, controlling payment terminals, printers, and cameras through a unified system.
- Implemented intelligent power management, achieving millisecond wake-up from deep sleep, enabling cost-effective 24/7 unattended kiosk operation in shopping malls.
- Designed a hybrid IPC architecture using XPC for secure process isolation and command-line interfaces for third-party manufacturer software integration.
- Deployed software powering photobooths at weddings, media events, conferences, and retail mall installations worldwide.
- Solved real-world constraints, including power consumption and heat management, for 24/7 unattended retail deployments.
Technical Project Manager
Seidr, Ltd.
- Delivered a comprehensive product requirements document enabling the client to engage the development team with clear technical direction for the military training platform.
- Designed AI-integrated technical architecture for real-time training simulation capabilities, specifying system components and integration points.
- Created a phased implementation roadmap with technology stack recommendations meeting military-grade reliability and security requirements.
- Conducted knowledge transfer session with development company, ensuring smooth handoff of technical specifications and architectural decisions.
- Enabled the client to transition from static PowerPoint-based training to planning an interactive AI-powered simulation platform.
MacOS Developer
Mainsail Holding LLC
- Maintained a 30-year-old marine navigation codebase that most developers would consider unmaintainable, keeping it functional for ongoing commercial maritime use.
- Implemented C-to-Objective-C-to-Swift bridging patterns, enabling new feature development without destabilizing decades-old legacy core algorithms.
- Integrated Python libraries into a macOS application to extend functionality while preserving the original architecture and avoiding rewrites.
- Performed code archaeology on an undocumented 1990s codebase, documenting functionality before modifications to prevent breaking proven navigation algorithms.
- Updated dependency trees and third-party libraries across a multi-decade codebase without introducing breaking changes to safety-critical navigation functions.
iOS Developer
Airmee
- Delivered a complete offline-first logistics system in six weeks, enabling couriers to complete deliveries inside buildings without network connectivity.
- Designed a sophisticated offline architecture with OS-level background services that survive app backgrounding and phone lock states for uninterrupted operations.
- Implemented a zero back-end modifications approach, solving the critical business problem entirely through the iOS client-side architecture.
- Built an intelligent sync mechanism that queued operations offline and synchronized automatically when connectivity was restored, maintaining data integrity.
- Enabled delivery operations in previously unreachable areas where network loss had blocked courier workflows.
Senior MacOS Developer
Axle.ai
- Achieved 15-20x performance improvement by rebuilding browser-based media management solution as native macOS application, transforming hours-long processing into minutes.
- Delivered a complete platform rebuild in 6 months against a 5-year legacy codebase, becoming the primary competitive differentiator for the enterprise media market.
- Enabled NBC, CNN, BBC, and The Times to dramatically accelerate media cataloging workflows through native performance optimization.
- Implemented enterprise-scale core data architecture handling 10,000+ media assets with FTS5 full-text search, reducing complex queries from seconds to milliseconds.
- Built Ascribe transcription SDK that was acquired by Dropbox and integrated directly into their macOS application, demonstrating both technical excellence and business impact.
- Integrated FFMPEG 4.1 with custom Objective-C wrapper and hardware-accelerated encoding using VideoToolbox for professional video formats (ProRes, DNxHD, XDCAM).
- Implemented on-device machine learning using Core ML for intelligent scene detection, object recognition, and face detection while maintaining enterprise privacy requirements.
- Promoted from macOS developer to senior developer within six months based on exceptional performance and delivery.
Mobile Developer
CatchSmart
- Built an indoor localization system tracking 5,000+ workers and 1,000+ spare parts daily across industrial facilities using 3,000 BLE beacons—Rolls-Royce Finland CTO pursued licensing.
- Delivered CatchPay marketplace from scratch, achieving 20 shops and 500 users in the first week of launch; the platform was later acquired by another company.
- Pioneered Latvia's first ARKit application during the framework's first month of availability, building a gamified Christmas marketing experience with 50 face filter masks.
- Built custom native iOS camera and barcode modules, replacing unstable React Native libraries, eliminating crashes and memory leaks in a factory quality tracking system.
- Developed factory quality tracking system deployed across three plants supporting 5,000+ workers logging 1,000-2,000 inspections daily.
- Progressed from junior developer to direct CEO reporting in 14 months based on demonstrated technical ownership and delivery.
- Solved multi-million euro timber tracking problem through custom signal processing algorithms, overcoming hostile RF environments in metal-heavy factories.
R&D Engineer
Adam.ai
- Benchmarked multiple NLP and computer vision ML models, providing research-backed recommendations that informed the product's technical direction.
- Contributed to SDK integration testing, enabling the platform to leverage best-in-class ML capabilities for meeting transcription and participant recognition.
- Conducted product-market fit research, distinguishing essential features from nice-to-haves, shaping product roadmap priorities.
- Delivered a sophisticated user experience, meticulously implementing a complex and user-centric interface to ensure users have an optimal and engaging interaction with the meeting assistant robot.
- Designed and manufactured Adam's first physical 3D robot body using an innovative sliced MDF technique, presented to Yuoxel CEO as the first embodiment of an AI system.
Software Developer
Qafeer Makerspace
- Pioneered the construction of a charitable vending machine, enabling users to contribute old books, gadgets, and electronic devices to benefit those in need, fostering a culture of giving and support.
- Established a highly secure system for the vending machine, safeguarding donated items and transactions, ensuring the integrity of the charitable process.
- Engineered a mobile application tailored for painters, offering control over an 8-degrees-of-freedom robotic arm, enhancing their capabilities and precision in the art of painting.
- Served as a mentor and trainer, imparting knowledge and expertise to new developers across various domains, nurturing their growth and skill development.
- Enhanced the design and functionality of the Google Cardboard virtual reality kit, elevating its quality to rival that of the Oculus Rift, providing an immersive virtual reality experience that met high standards.
Experience
BConfident – AI-powered Video Interview Analysis
Key achievements:
• Built an iOS prototype integrating emotion detection ML for real-time video interview analysis.
• Secured €200,000 funding offer from German research center with VC connections.
• Implemented real-time detection of confidence and engagement during candidate video responses.
• Partnered with an Egyptian MIT scholar for emotion detection SDK integration.
• Gained year-long fundraising experience presenting to Egyptian angels, European VCs, and research institutions.
Ascribe – Professional Transcription SDK (Acquired by Dropbox)
Key achievements:
• Successfully acquired by Dropbox and integrated directly into their macOS application.
• Built as a reusable .framework SDK enabling Dropbox integration without modifying the core codebase.
• Integrated Deepgram speech-to-text API for professional-grade transcription accuracy.
• Achieved native macOS performance with efficient memory management for large audio files.
• Opened content creator market (podcasters, YouTubers) beyond enterprise media clients.
• Created an additional revenue stream that helped Axle survive financially during the company transition.
• Supported WAV, MP3, M4A, AAC audio formats plus video audio extraction from MOV, MP4.
Findor – University Campus Navigation App
Key achievements:
• Built a functional campus navigation app within the hackathon timeframe.
• Successfully applied Flutter for rapid cross-platform development.
• Created student-focused UX for campus orientation.
• Integrated campus mapping and location services.
• Demonstrated hackathon-speed development and prioritization skills.
CatchPay Platform
Key achievements:
• Built a complete iOS marketplace from scratch as a sole developer in just three months.
• Achieved strong early traction: 20 shops and 500 users in the first week of launch.
• Implemented smart offline-first caching, solving the problem of poor in-store internet coverage.
• Created a dynamic, modular home screen with Auto Layout, adapting to order status and promotions.
• Stress tested with 500,000 products (1,000 shops x 500 each), ensuring scalability.
• Implemented hybrid background location using silent push and background tasks for pickup notifications.
• Platform later acquired by another company (successful exit).
Hypermarket Chain ERP System
Key Achievements:
• Delivered full ERP system for 7-8 branch hypermarket chain.
• Replaced expensive German ERP vendor quote with significant cost savings.
• Transformed pen-and-paper operations to a fully digital system.
• Implemented offline-first architecture, ensuring operations during connectivity issues.
• Integrated POS systems, payment machines, and CCTV across all branches.
• Built a mobile manager app providing real-time visibility into operations.
• Created innovative AR marketing character driving customer engagement and social sharing.
Factory ERP and Manufacturing System
Key achievements:
• Delivered full factory ERP covering all departments from client acquisition to delivery.
• Built on Odoo Community Edition with extensive custom Python plugins.
• Conducted multi-day on-site consulting in a desert factory location to understand operations.
• Integrated HR, accounting, supply chain, and purchasing into a unified system.
• Created factory-specific modules for wood manufacturing workflows.
• Designed an integrated workflow system where actions trigger cross-department responses.
InstaPrint – Print-on-demand Service Platform
Key achievements:
• Delivered cross-platform solution: React Native mobile, React web, JavaScript desktop.
• Implemented PWA with offline support, enabling quick orders without app installation.
• Created an innovative, dynamic QR code system linking phone uploads to web order sessions.
• Integrated secure payment processing for a seamless checkout experience.
• Designed cloud infrastructure with strong data privacy for sensitive documents.
• Built a desktop application for printing facility workers to manage order queues.
la7ma.com – Egypt's First Online Fresh Meat eCommerce
Key achievements:
• Launched Egypt's first fresh meat eCommerce platform (first-to-market).
• Successfully targeted 30-35+ demographic who traditionally buy from local butchers.
• Implemented full RTL Arabic support with bilingual (Arabic/English) interface.
• Created an interactive meat cuts display to build visual trust with customers.
• Enabled custom order capabilities for specific cuts and preferences.
• Capitalized on the post-COVID-19 eCommerce boom in Egypt.
P&G Warehouse Automation Robot (AGV System)
Key achievements:
• Led a 4-person university team to design a complete AGV system for the P&G warehouse.
• Won funding approval from a major multinational corporation.
• Implemented WiFi RSSI indoor localization, achieving reliable position tracking using 4-beacon triangulation.
• Developed Hadlock/Soukup path planning algorithm with 50cm grid resolution, optimizing for the shortest path with minimum rotations
• Created three solution scenarios with detailed cost estimates ($19,000-$20,000 per unit).
• Delivered 18-page technical proposal with CAD models and demo video.
AskDucks – International Student Consultation Marketplace
Key achievements:
• Built a complete two-sided marketplace MVP connecting international students across iOS and Android.
• Created an intelligent matching system pairing students by city, university, nationality, field, and lifestyle.
• Implemented full consultation workflow: profiles, booking, messaging, and payments.
• Enabled students abroad to monetize their knowledge and experience.
• Designed tiered services from consultation calls to full-service apartment hunting.
• Validated problem through personal experience—both co-founders lived the pain point for years.
Education
Master's Degree in Computer Systems and Networks
Riga Technical University - Riga, Latvia
Bachelor's Degree in Mechatronics Engineering
Nile Unversity - Cairo, Egypt
Skills
Libraries/APIs
CocoaPods, REST APIs, Node.js, Core Image, React, OpenAI API, PyQt 5, Liquid
Tools
Xcode, Postman, Git, IntelliJ IDEA, WebStorm, Adobe, Sketch, Figma, Slack, Amazon Cognito, SendGrid, AutoCAD, SOLIDWORKS, GitHub, Jira, Adobe CC, Blender, Odoo
Languages
Python, Swift, JavaScript, HTML, SQL, Objective-C, C++, Dart, Java, Swift 5, TypeScript, C, Embedded C
Frameworks
ARKit, React Native, UIKit, Electron, Unity3D, Flutter, Core Data, Core ML, SwiftUI, Cocoa, Unity, .NET, QWeb
Paradigms
Mobile App Design, Agile, Desktop App Development, Agile Software Development, Cross-platform, Requirements Analysis, Mechanical Design, API Architecture, Web Architecture, Microservices, Database Design, Mobile Development, Scrum, Automation
Platforms
Google VR, iOS, MacOS, Mobile, Bluetooth Low Energy (LE), Firebase, ARCore, FlutterFlow, Visual Studio Code (VS Code), Thunkable, Android, Amazon Web Services (AWS), AWS Lambda, WatchOS, iCloud, Linux, Desktop, Shopify
Storage
Database Architecture, SQLite, MongoDB, Amazon DynamoDB, PostgreSQL
Other
Algorithms, Mobile App Development, Project Design & Management, Architecture, Technical Hiring, Source Code Review, Task Analysis, Interviewing, Code Review, Full-stack, Video Streaming, Audio, Mobile Architecture, Technical Leadership, Accessibility, Location Services, Leadership, Software Design, Native Mobile Apps, Startups, Software Architecture, VNC, Technical Consulting, APIs, Minimum Viable Product (MVP), User Experience (UX), Mobile Applications, API Integration, System Architecture, System Integration, Back-end Development, Mobile Apps, Full-stack Development, Image Manipulation, Video Editing, AVFoundation, CTO, eCommerce, Cloud Infrastructure, Wearables, Software Development, Machine Learning, Networking, Computer Engineering, Artificial Intelligence (AI), Robotics, Computer Vision, Circuit Design, Board Development, UX Architecture, IT Project Management, R&D, Amazon API Gateway, ML Kit, Cloud Architecture, Internet Protocols, Remote Desktop, Audio Streaming, Virtual Reality (VR), CI/CD Pipelines, Siri, Print, Debugging, Email Design, PCB Design, Tutoring, CNC, Scripting, Simulations, Rendering, 3D Modeling, SDKs, Solution Architecture, Infrastructure, iOS App Development, Audio Engines, POS, Payment APIs, Enterprise Resource Planning (ERP), PWA, QR Codes, WiFi, Pathing, Sensor Data, AI Algorithms, Firebase Cloud Functions, AGV, Industrial Automation, Integration, WiFi RSSI
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