Hire the Best iOS Developers in Toronto, ON

SENIOR iOS DEVELOPER 20+ NATIVE iOS APPS | EXPERT PROBLEM SOLVER & BUG FIXER | AGILE ENTHUSIAST SUMMARY OF QUALIFICATIONS ● Extensive experience in developing high-quality iOS applications, with expertise in Swift, SwiftUI, Objective-C, with hands-on expertise in Combine and URLSession for efficient app communication. ● Proven ability to design and build complex apps from scratch, following Apple’s Human Interface Guidelines, and successfully navigating the App Store review process. ● Strong knowledge of app architecture patterns like MVC, MVP, MVVM, and VIPER, with hands-on experience in integrating RESTful APIs, third-party libraries, and JSON parsing. ● Strong communicator skills with experience working in cross-functional teams in fast-paced environments, bringing a proactive and collaborative approach to problem-solving skills. ● Developed robust iOS applications of audio and video category and possess extensive knowledge of audio and video frameworks, including AVFoundation. ● Proficient in XCode, ensuring quality code and implementing continuous integration and continuous delivery (CI/CD) throughout the development lifecycle. ● Strong advocate for Agile methodologies, driving best practices in coding standards, code reviews, testing, and operations, ensuring high-quality and reliable code. PROFESSIONAL SKILLS ● Languages: Swift, SwiftUI, Objective-C, Java, C/C++. ● Technologies: OpenGL ES2, GLSL . ● Database: RealmSwift. ● IDE/Tools: Xcode, Android Studio, VSCode, Git/Github, Bitbucket. Jira. ● Design Patterns: MVC, MVVM, MVP, Dependency Injection, SOLID Principles, etc. ● Frameworks: Combine, AVFoundation, Core Data, Core Animation, Firebase, RESTful APIs. ● Deployment: Apple’s AppStore and Google’s PlayStore. ● Methodologies: Agile (Scrum). ● Other Skills: CI/CD, Code Review, Testing(Unit testing and UI testing), Bug Fixing. WORK EXPERIENCE iOS Developer Gemstone Lights Calgary Ltd., Alberta, Canada Dec 2022 – Present ● Develop and maintain an iOS application (GemStoneHubiOS). Fix critical issues and implement new features to enhance user experience using Objective-C and Swift. ● Fix critical issues such as SignUp and Login flow related. ● Implement various features like exporting 64 patterns data in a single Json file. ● Developed several high-performance iOS applications using SwiftUI, focusing on responsive design and user experience. ● Redesigned and developed 'GemStoneHubiOS' application with SwiftUI using various state management strategies, resulting in intuitive and maintainable code. ● Integrated ‘Combine’ with this('GemStoneHubiOS') SwiftUI app to build reactive interfaces, along with Core Data, animations, and transitions, resulting in faster load times and smoother user experiences. ● iOS App Store’s Link: Gemstone Lights Hub. Senior iOS Developer KITE GAMES STUDIO Ltd., Dhaka, Bangladesh Jan 2019 – Sep 2022 Key Responsibilities: ● Developed and maintained over 20 native iOS apps using Swift, SwiftUI, and Objective-C, adhering to Apple’s HIG and ensuring long-term project viability by converting 6 projects from Objective-C to Swift, including VideoEditor and AddMusicToVideo. ● Facilitated collaboration and code quality by establishing a robust continuous integration/continuous delivery(CI/CD) pipeline, mitigating integration issues, and catching bugs early, resulting in faster app release to AppStore. ● Enhanced user satisfaction by addressing feedback, fixing critical bugs and adding essential features, increasing user acquisition 20% during 2017 and 2019. ● Conducted competitive analysis to implement highly demanded features, improving app quality and functionality, as a result more than 15% new users were acquired. ● Developed efficient testing guidelines for QA, reducing testing cycle time and improving testing accuracy, which allowed the QA team to deliver apps faster than before. ● Researched faster mask image generation using an ML model for "AI Effect" and optimized the "Reshape" feature in BeautyEditor, competing with Facetune. ● Implemented concurrency and multithreading to manage image uploads/downloads in PhotoVolt, resolving race conditions. ● Integrated different architectures(MVC, MVP, MVVM, VIPER) architectures in key projects, ensuring scalability and maintainability. ● Led Agile Scrum practices, maintaining Jira-based sprints and retrospectives for continuous project improvement. ● Utilized CoreData, Realm, Keychain, and UserDefaults while adhering to SOLID principles for data persistence. ● Developed a custom framework CustomVideoCompositor for VideoEditor iOS app, reducing development time by 30%, which allowed other developers to focus on critical features. ● Collaborated with cross-functional teams, improving team efficiency and product outcomes. ● Delivered training on OOD principles, design patterns, and Agile methodologies, enhancing team skill sets. ● Integrated native and third-party frameworks like AVFoundation, Firebase, and Alamofire across multiple project

With 12 years of professional experience in native iOS app development and 6 years in React Native, I specialize in building high-performance, scalable mobile applications. I thrive on innovative ideas and challenging projects, leveraging my expertise in software engineering, algorithm design, analytics, and problem-solving to deliver seamless user experiences. Key Skills & Expertise: ✅ iOS Development: Swift, SwiftUI, Combine, Objective-C, XCTest ✅ Hybrid & Cross-Platform Development: React Native, React, TypeScript ✅ Architectural Patterns: MVC, MVVM ✅ Testing & Optimization: Snapshot Testing, Unit Testing, Swift Testing ✅ AI & Developer Tools: ChatGPT, Cursor, Claude, DeepSeek I am passionate about staying ahead in the ever-evolving tech landscape, constantly exploring new technologies to build cutting-edge mobile solutions.

🥇 𝐓𝐨𝐩 𝟏% 𝐓𝐚𝐥𝐞𝐧𝐭 - 𝐄𝐱𝐩𝐞𝐫𝐭 𝐕𝐞𝐭𝐭𝐞𝐝 on Upwork. I help startups and product teams build fast, clean, and scalable mobile apps. 👨‍💻 As a senior full stack developer with over 15 years of experience, I build apps that help startups and businesses grow. 🔧 𝐖𝐡𝐚𝐭 𝐈 𝐃𝐨 - Mobile Apps (iOS + Android): 40+ apps delivered. 25+ published to the App Store (⭐ 4.7 avg). Performance optimized, CI/CD deployed, built to scale. - IoT & BLE: Deep expertise with ESP32, custom firmware, Bluetooth, and AWS IoT. Smart devices, real-time sync, low-latency control. - AI/ML Integration: ChatGPT, ML models, and automation embedded into mobile/web apps. 5+ AI chatbots, 4 ML features built. - Web Backend + Frontend: Full-stack engineer using Node.js, React, Laravel, MySQL. Solid APIs, fast UIs, maintainable code. 📱 𝐑𝐞𝐜𝐞𝐧𝐭 𝐖𝐨𝐫𝐤 - BLE-based TV Lift Controller: IoT app + firmware. 99.9% uptime. Reduced support tickets by 85%. - Fitness Social Platform (Flutter): Scaled to 50K+ users. 40% MoM growth. - QSR Ops Platform: Internal tool for 200+ fast food locations (Taco Bell, KFC, etc). Saved $1.2M/yr in ops cost. - Sports Team App: Booking, scheduling, payments. Now used by 15K+ hockey players. 🧰 𝐒𝐭𝐚𝐜𝐤 Mobile: Flutter, Dart, React Native, Swift Web: React.js, Node.js, Laravel IoT: BLE, ESP32, Arduino, AWS IoT AI: Python, OpenAI API, TensorFlow DevOps: CI/CD, GitHub Actions, Docker Tools: Figma, Postman, Firebase, MySQL ✅ 𝐖𝐡𝐲 𝐌𝐞? - Built MVPs and scaled platforms — not just code, real products - Own the process — architecture to deployment - Communicate clearly - Proactive - Detail-oriented

Results-oriented iOS Application Developer with a goal of creating applications to facilitate the users and provide them the best user interface experience. I also understand the importance of creating highly readable and easily maintainable code. I deliver quality results to tight timelines. I can create RESTful applications and work through different third party libraries. I have the skills of creating beautiful animations and can apply every type of CRUD operations. I have full command on creating native iOS apps.

"I have so much confidence in Varun’s skill levels and trust in his ability he is a joy to work with. If you choose Varun you will not be disappointed and I am more than happy to personally recommend him." - Jeremy R., FaceCrypt Pro "Varun is an outstanding IOS Developer & Very Professional. He quickly understands the requirements, and expectations and delivers as per the schedule. He handled our Project very smoothly. He is one of the top developers I worked with in my career. Looking forward to hiring him for my future projects.." - Naresh Ranga, Gokar "Varun is extremely knowledgeable and could complete his project in record time. He collaborates well with the team and takes ownership." - Smita, Houm Technologies Top Rated Plus iOS Developer with 10+ yrs of full-time work experience developing apps for iPhone, iPad, iPod, Apple Watch, and Mac. I am proficient in Swift and Objective C, and use Xcode, SwiftUI, UIKit, Cocoa libraries, and other third-party libraries to develop apps. - Consistently delivered projects on time and with great success resulting in happy clients and over 90% repeat business. - Received glowing reviews from various clients praising timely deliveries, efficiency, communication, and professionalism. - Trained engineers on various Apple technologies and have led development teams on many projects receiving accolades and awards I pride myself on creating fast, memory-efficient, well-thought-out apps that are a joy for users to use. I am self-motivated, target-oriented, and determined, with great love for building software. I love challenges and focusing on user experience and, keep learning about upcoming technologies and trends to suggest the best solutions to my clients. I have excellent communication skills and am a reliable, prompt, quick learner who loves to pay attention to detail. Do let me know in case of any questions. I am happy to assist. Multilingual - English, Hindi, Punjabi

• 7+ years of IT Experience in Analysis, Architecture, App Design, Testing & Implementation of various Client / Server, Development of iOS Applications that are scalable using Swift, SwiftUI,X Code, and Cocoa Touch framework. • Skilled in scoping iOS development projects, defining project goals, and identifying deliverables, and timelines. • Proficient in implementing OOPs, MVVM Architecture and MVC. • Experience in working with repositories in GIT for issues, code reviews and versioning • Experience in writing Unit Testing cases using XCTest to validate code. • Experience with the iOS SDK performance tools and optimisation techniques. • Knowledge of Mobile Apps distribution and provisioning on Apple developer Portal, Enterprise app Distribution. • Understanding of User Experience (UX) design principles. Designing and building advanced applications for the iOS platform. • Proficient in requirements gathering and analysis. Collaborating with cross-functional teams to define, design, and ship new features. • Unit-testing code for robustness, including edge cases, usability, and general reliability. • Experience in bug fixing/debugging and improving application performance • Strong fundamental understanding of algorithms, data structures. • Fast learner and proactive individual with excellent verbal and written communication skills, strong analytical and organizational skills.