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Hi, I’m Sultan, an iOS developer with 7+ years of experience building and maintaining production iOS apps in distributed teams. I specialize in full-cycle development—from collecting product requirements to automated releases with strong test coverage and analytics. I focus on codebase modernization, app stability, and delivering features with modern iOS tech. I mentor juniors through code reviews and knowledge-sharing, and I thrive in multicultural teams. I’m passionate about building independent iOS products and launching startup projects for the Global App Store.…Hi, I’m Sultan, an iOS developer with 7+ years of experience building and maintaining production iOS apps in distributed teams. I specialize in full-cycle development—from collecting product requirements to automated releases with strong test coverage and analytics. I focus on codebase modernization, app stability, and delivering features with modern iOS tech. I mentor juniors through code reviews and knowledge-sharing, and I thrive in multicultural teams. I’m passionate about building independent iOS products and launching startup projects for the Global App Store.

Sultan Almukhan

App Developer, Developer, Programmer, +5

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Hi, I’m Sultan, an iOS developer with 7+ years of experience building and maintaining production iOS apps in distributed teams. I specialize in full-cycle development—from collecting product requirements to automated releases with strong test coverage and analytics. I focus on codebase modernization, app stability, and delivering features with modern iOS tech. I mentor juniors through code reviews and knowledge-sharing, and I thrive in multicultural teams. I’m passionate about building independent iOS products and launching startup projects for the Global App Store.…Hi, I’m Sultan, an iOS developer with 7+ years of experience building and maintaining production iOS apps in distributed teams. I specialize in full-cycle development—from collecting product requirements to automated releases with strong test coverage and analytics. I focus on codebase modernization, app stability, and delivering features with modern iOS tech. I mentor juniors through code reviews and knowledge-sharing, and I thrive in multicultural teams. I’m passionate about building independent iOS products and launching startup projects for the Global App Store.

Available to hire

Hi, I’m Sultan, an iOS developer with 7+ years of experience building and maintaining production iOS apps in distributed teams. I specialize in full-cycle development—from collecting product requirements to automated releases with strong test coverage and analytics.

I focus on codebase modernization, app stability, and delivering features with modern iOS tech. I mentor juniors through code reviews and knowledge-sharing, and I thrive in multicultural teams. I’m passionate about building independent iOS products and launching startup projects for the Global App Store.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Language

Kazakh

Fluent

English

Fluent

Russian

Fluent

Turkish

Advanced

Work Experience

iOS Developer at Tele2

August 1, 2024 - Present

Designed and developed key modules in the Tele2 and Altel apps, including a full-featured 'Ringtones' music platform, 'Call Record' module with audio player and transcription, and 'Credits' module for loan applications. Optimized the project's largest Swift Package Manager module by migrating to Swift 6, replacing legacy tests, and refactoring async logic to improve performance.

iOS Developer at DAR

August 31, 2024 - July 21, 2025

Redesigned the Meetings module independently, implementing advanced features like recurring events, custom calendar and timeline views, and meeting notes with approval and sharing capabilities. Created a new Swift Package with a WYSIWYG editor for rich-text customization. Centralized URL configuration to simplify environment management and significantly reduced build times and app launch duration.

iOS Developer at Halyk Bank

March 31, 2023 - July 21, 2025

Led a complete redesign of the 'Acquiring' module, focusing on reusability and scalability. Collaborated with backend teams to integrate new APIs and delivered over 15 responsive pages under tight deadlines. Conducted training workshops for junior developers to improve team skills.

iOS Developer at Tredo

March 31, 2022 - July 21, 2025

Enhanced the 'BCC Business' app by adding deposits and transport tax functionalities and refactoring bank transfer and notification systems. Developed the 'Intebix' cryptocurrency trading app from scratch and implemented a full registration flow with identity verification and real-time price updates for the 'Biteeu' app.

iOS Developer at Halyk Bank

January 31, 2021 - July 21, 2025

Contributed to feature development, bug fixing, and maintenance of the 'Onlinebank' app, serving business clients.

iOS Developer at Tele2 / Altel

August 1, 2024 - Present

Implemented a full-featured 'Ringtones' media platform with advanced browsing and system-level ringtone installation; developed a 'Call Recording' module with an audio player and time-synced transcription; integrated an end-to-end loan application flow with partner banks, boosting issued loans by 34.6% within two months; modernized the largest module by migrating to Swift 6, replacing legacy XCTest with Swift Testing, and refactoring async logic to async/await, improving crash-free rate and performance.

iOS Developer at Darlean

May 1, 2023 - August 1, 2024

Implemented advanced meeting creation and editing features, including recurring events and a custom calendar with Google Calendar-inspired timeline views; developed a Swift Package with a WYSIWYG editor enabling rich-text HTML customization; centralized environment-based URL configuration across modules; reduced SPM build times from 20 to 4 minutes and improved app launch time by 10 seconds.

iOS Developer at Halyk Bank

January 1, 2022 - May 1, 2023

Redesigned and re-architected the most-used 'Acquiring' module, delivering 15+ production screens with scalability and backend integration; increased App Store rating from 4.4 to 4.6 within one month; raised crash-free user rate from 87.6% to 94.2%; mentored junior iOS developers via weekly training sessions and code reviews.

iOS Developer at Tredo

February 1, 2020 - January 1, 2022

Developed the BCC Business app end-to-end, delivering core features for business users and achieving 500K+ downloads.

iOS Engineer at DAR

May 1, 2023 - August 1, 2024

Designed and introduced advanced meeting creation and editing features, including recurring events and a custom calendar with timeline views inspired by Google Calendar. Created a new Swift Package with a WYSIWYG editor enabling rich-text customization with HTML tags. Centralized environment-based URL configuration across modules, simplifying deployment and maintenance. Reduced SPM build times from 20 to 4 minutes and improved app launch time by 10 seconds.

iOS Developer at Tredo

February 1, 2019 - January 1, 2022

Solo iOS developer for crypto app; built and released end-to-end from scratch. Implemented registration and identity verification flow for centralized identity operations. Integrated real-time price updates via WebSocket. Introduced 'Deposit' and 'Transport tax' features for business users; Refactored internal bank transfer and notification systems for reliability and maintainability.