Sufyan is available for hire

Sufyan Anees

Verified Expert in Engineering

Mobile Software Engineer and Developer

Islamabad, Pakistan

Toptal member since July 15, 2026

Expertise

iOS Objective-C Git Swift Kotlin Dart REST API GitHub SQL Firebase Flutter Software Development Agile Development .NET

Bio

Sufyan has spent 16 years building mobile solutions across enterprise mobility and cloud-connected applications. His toolkit centers on Flutter, Swift, and Kotlin. While at InterServer USA, Sufyan led the end-to-end development of a cross-platform mobile application.

Portfolio

InterServer USA

Flutter, Objective-C, Dart, REST APIs, GitHub

Exceed Gulf (StemeXe)

Objective-C, Swift, Flutter, Dart, REST APIs, Kotlin, Figma, iOS...

TEO International

Objective-C, Swift, Core Data, REST APIs, iOS, Apple Push Notifications...

Experience

REST APIs - 16 years
iOS - 16 years
Objective-C - 16 years
Swift - 8 years
SwiftUI - 6 years
Kotlin - 4 years
Dart - 3 years
Flutter - 3 years

Preferred Environment

Agile, CI/CD Pipelines, Git

The most amazing...

...application I've built is the InterServer Mobile application, which I led from architecture to deployment for both iOS and Android platforms.

Work Experience

Lead Mobile Software Engineer

2025 - 2026

InterServer USA

Spearheaded the end-to-end development of the InterServer Mobile application using Flutter.
Defined application architecture, coding standards, and development roadmap.
Implemented UI/UX, back-end integrations, testing, deployment, and optimization.
Published and maintained applications on the App Store and Google Play.
Collaborated with cross-functional teams to achieve business goals.

Technologies: Flutter, Objective-C, Dart, REST APIs, GitHub

Principal iOS Software Engineer

2015 - 2025

Exceed Gulf (StemeXe)

Managed and mentored mobile development teams who work under me.
Conducted requirement gathering and technical analysis.
Prepared estimations and resource allocation plans.
Guided client meetings online and Agile project execution.
Managed multiple project streams, ensuring successful delivery.

Technologies: Objective-C, Swift, Flutter, Dart, REST APIs, Kotlin, Figma, iOS, Apple Push Notifications, Geolocation, Maps, Mobile App Development, Payment APIs, TestFlight

Principal Software Engineer

2011 - 2015

TEO International

Gathered and analyzed requirements shared by clients.
Prepared project estimates and sprint plans for development.
Led junior developers and mentored team members to improve productivity.
Managed Agile development lifecycle in my team and conducted stand-up meetings.
Delivered solutions for international clients as per the requirements.

Technologies: Objective-C, Swift, Core Data, REST APIs, iOS, Apple Push Notifications, Geolocation, Maps, SQL, Payment APIs, Subscriptions, TestFlight, User Experience (UX)

Mobile and Web Architect

2008 - 2011

Axact Pvt Ltd

Designed SaaS architectures and enterprise systems.
Conducted performance evaluations and appraisals of peer members.
Oversaw implementation and product delivery for better results.
Managed customer feedback, enhancements, and delivery changes on time.

Technologies: ASP.NET, Objective-C, Core Data, REST APIs, SQL

Software Engineer

2007 - 2008

Mechatronix

Developed software solutions and enterprise applications.
Participated in design, coding, testing, and deployment.
Provided support and performance optimization of systems.

Technologies: C#.NET, Databases, SDKs, Desktop App

Experience

StemeXe App

https://apps.apple.com/us/app/stemexe-app/id1502529266

StemeXe is a solution that can be customized for any organization that requires a beautiful, usable mobile app in record time. Besides being easy to use and beautiful to look at, StemeXe has the following features: private announcements, request approval, a knowledge base, a team member chat, and activity management.

InterServer Mobile Application

https://apps.apple.com/us/app/interserver-mobile/id992766525

InterServer Mobile, available for free, allows you to quickly provision and manage our cloud VPS hosting service. You can provision new instances on the fly right off your mobile device. In addition, the application allows you to check the status, reboot, start, and stop your VPS instances. It is developed in Flutter (Dart) and consumes REST APIs to communicate with the server.

LedgersApp

https://play.google.com/store/apps/details?id=com.gbs.ledgersapp

LedgersApp is a simple and powerful business ledger application designed to help businesses manage customer and vendor accounts with ease. Whether you run a small shop, trading business, service company, or growing enterprise, LedgersApp helps you keep your financial records organized and accessible anytime, anywhere.

Education

2009 - 2011

Master's Degree in Software Engineering

Bahria University - Islamabad, Pakistan

2003 - 2007

Bachelor's Degree in Software Engineering

Bahria University - Islamabad, Pakistan

Skills

Libraries/APIs

REST APIs

Tools

Git, TestFlight, Apple Push Notifications, GitHub, Figma

Languages

Swift, Objective-C, Kotlin, Dart, SQL, C#.NET, PHP

Frameworks

SwiftUI, Core Data, Flutter, ASP.NET

Paradigms

Real-time Systems, Agile

Platforms

iOS, Mobile, Firebase

Storage

SQLite, Databases, MySQL

Other

Maps, Mobile App Development, API Integration, App Store, Geolocation, Payment APIs, Payments, Subscriptions, User Interface (UI), User Experience (UX), CI/CD Pipelines, Software Development, Data Structures, Software Engineering, Programming, Mathematical Logic, SDKs, Desktop App

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