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Sandy Twix

@sandytwix

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Experienced iOS developer with a strong focus on performance improvement.

United Arab Emirates

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What I'm looking for

I am looking for a role that fosters innovation, encourages continuous learning, and offers opportunities for mentorship and leadership.

I am an iOS developer with over 6 years of commercial experience, adept at working in diverse team environments ranging from small groups to large teams of 36 members. My expertise encompasses the full development cycle, from gathering requirements to establishing automated release processes with high test coverage. I have successfully migrated numerous projects to SwiftUI and implemented Structured Concurrency and UDF architectures, significantly improving crash-free rates and performance metrics.

In my role as a tech lead, I have mentored specialists at various levels, developed individual growth plans, and created backlogs to streamline project workflows. My commitment to continuous learning is reflected in my active participation in the tech community, where I share insights through my blog and presentations at conferences. Additionally, I have taught an online course on iOS development, contributing to the education of future developers.

Experience

Work history, roles, and key accomplishments

Current

iOS Developer

Current

MTS

Nov 2023 - Present (1 year 7 months)

As an iOS Developer at MTS, I increased the crash-free user rate from 71.3% to 91.6% and configured CI/CD with Jira and Slack synchronization. Developed a design system and a new UDF-based architecture, improving the app's performance and marketplace score significantly.

UIKit SwiftUI Combine Fastlane XCTest CI CD Jira Slack

iOS Developer

GLOVO

Jun 2021 - Jul 2023 (2 years 1 month)

At GLOVO, I reduced application build speed by 28% and led initiatives to streamline the order process, resulting in a 3.2% increase in monthly orders. I also increased UI tests significantly, enhancing the delivery of UI bug fixes.

UIKit SwiftUI MVVM XCTest Performance Optimization Agile

iOS Developer

YANDEX

Oct 2019 - Jun 2021 (1 year 8 months)

At YANDEX, I transitioned a significant portion of the codebase from Objective-C to Swift, enhancing code quality. I also improved algorithms for pricing based on various factors, which increased company profits by 12%.

UIKit VIPER Alamofire XCTest

iOS Developer

ACCENTURE

Feb 2019 - Oct 2019 (8 months)

During my time at ACCENTURE, I contributed to various iOS projects, enhancing my skills in mobile development and collaborating with diverse teams to deliver high-quality applications.

iOS Development Team Collaboration Agile Methodologies Mobile Application Design Software Development