Bilal Saifudeen, Developer in Almere, Netherlands
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Bilal Saifudeen

Verified Expert  in Engineering

iOS Software Engineer and Developer

Almere, Netherlands

Toptal member since April 16, 2025

Expertise
XcodeObjective-CiOSSwiftMacOSDatabaseC++JavaGit
Bio

Bilal is a senior iOS software engineer with 13+ years of experience in small service and top-tier product companies with a million-user base, such as Booking.com and Oracle. An expert in Objective-C and Swift, he works with UIKit and SwiftUI and has functional knowledge of SVN. With expertise in working with large and mixed codebases, as well as Git for version control, Bilal will be a great addition to any team.

Portfolio

Booking.com
Swift, SwiftUI, Objective-C, Architecture, Mobile, iOS, Software Architecture...
Oracle
Objective-C, Xcode, Architecture, Mobile, iOS, Software Architecture...
Solutions 4 Mobility
Objective-C, Xcode, Architecture, Mobile, iOS, Software Architecture...

Experience

  • Databases - 13 years
  • Software Engineering - 13 years
  • UIKit - 13 years
  • Xcode - 13 years
  • Objective-C - 13 years
  • Architecture - 10 years
  • Swift - 8 years
  • SwiftUI - 2 years

Availability

Full-time

Preferred Environment

Xcode, MacOS, Sublime Text, Git, Swift

The most amazing...

...thing I've conceptualized, shaped, prototyped, wireframed, and developed is my own personal finance app.

Work Experience

Senior iOS Software Engineer

2017 - PRESENT
Booking.com
  • Designed technical solutions and shaped APIs for iOS and Android mobile.
  • Mentored and led junior-mid level engineers. Onboarded new people to the team and the company.
  • Headed, architected, and built a new minimum viable product (MVP) within the Booking.com app from scratch with great coverage and the ability to develop independently of the back end.
Technologies: Swift, SwiftUI, Objective-C, Architecture, Mobile, iOS, Software Architecture, Mobile Development, UIKit, Combine, Consumer-facing Products, Online Payments, iPad

Senior Applications Engineer

2016 - 2016
Oracle
  • Built, maintained, and released updates for the Oracle sales cloud analytics iPad app.
  • Resolved production issues by collaborating with clients directly.
  • Released and monitored new version updates to the Apple App Store.
Technologies: Objective-C, Xcode, Architecture, Mobile, iOS, Software Architecture, Mobile Development, UIKit, iPad

iOS Developer

2014 - 2016
Solutions 4 Mobility
  • Built scalable and secure iOS apps and libraries for major banks.
  • Implemented touch-ID-based login solution for a major bank in Dubai.
  • Supported the migration of a mobile banking app to its redesigned version.
Technologies: Objective-C, Xcode, Architecture, Mobile, iOS, Software Architecture, Mobile Development, UIKit, Consumer-facing Products, iPad

iOS Developer

2013 - 2014
M Squared Software & Services Pvt
  • Analyzed requirements, developed iOS applications, and led and mentored a small team.
  • Ported proprietary DSS encoder in C++ to use in iOS app.
  • Built a dictation app for a major electronics brand.
Technologies: Objective-C, Mobile, iOS, Mobile Development, UIKit, Consumer-facing Products, iPad

iOS Developer

2011 - 2013
Srishti Innovative Systems
  • Analyzed software requirements and performed a technical feasibility study.
  • Developed iOS application features following the requirements.
  • Communicated and collaborated with clients to understand requirements and fix issues.
Technologies: Objective-C, Mobile, iOS, Mobile Development, UIKit, Consumer-facing Products, iPad

Experience

Booking.com

Contributed to the customer/guest-facing app for booking hotels, flights, etc. I collaborated with various teams, spanning from search to payments. Also, I built a completely new product within the app for the fintech domain.

Education

2007 - 2011

Bachelor of Technology Degree in Computer Science and Engineering

University of Kerala - Trivandrum, India

Skills

Tools

Xcode, Sublime Text, Git

Languages

Swift, Objective-C, C++, Java

Frameworks

UIKit, SwiftUI, Combine

Platforms

Mobile, iOS, MacOS

Paradigms

Mobile Development

Storage

Databases

Other

Software Engineering, Consumer-facing Products, iPad, Architecture, Software Architecture, Online Payments, Minimum Viable Product (MVP)

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