12/05/2025 updated

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Senior iOS/macOS Developer & Mobile Security Architect

Luxembourg, Luxembourg
Worldwide
Master of Business Administration - MBA
Luxembourg, Luxembourg
Worldwide
Master of Business Administration - MBA

Profile attachments

Sergii.Koval.Senior.iOS.macOS.pdf

About me

Senior iOS/macOS Developer with 15+ years of experience, specializing in AI integration, secure architecture, and advanced mobile technologies. Creator of Threat Explorer for penetration testing on Apple platforms, with 100+ commercial apps done for clients like Dolby, HCSS, Emtec, GlobalLogic.

InnovationJavaScriptArtificial IntelligenceApple IOSApple Mac SystemsApple XcodePenetration TestingArchitectureArchitectural DesignAutomationBash ShellCascading Style Sheets (CSS)Cloud ComputingContinuous IntegrationCryptographyDevOpsPayment SystemsGitHubMobile Application SoftwareObjective-C (Programming Language)PhotographyMobile SecuritySQLiteTypeScriptWebRTCWorkflowsCircleCIReact.jsGitLabCore DataFull Stack DevelopmentData ManagementWeb TechnologiesDatabase AdministrationJenkinsVulnerability AnalysisGoogle Pay
iOS/macOS Development
Expert iOS and macOS development with 15+ years of experience, specializing in Swift, Objective-C, and cross-platform solutions with 100+ commercial apps and 20+ personal projects

Mobile Security & Architecture
Advanced mobile security implementation including secure architecture design, penetration testing, and vulnerability assessment with expertise in CI/CD encryption

AI Integration & CoreML
Specialized AI integration and CoreML implementation for innovative mobile solutions including 3D photo shooting and multiplanar image fusing technologies

Cloud Technologies
Xcode Cloud and Bash scripts implementation for automated development workflows

Payment Systems
Comprehensive payment integration including Apple Pay, Google Pay, Huawei Pay, and various P2P payment methods

Database Management
SQLite and CoreData expertise for mobile application data management

Web Technologies
Full-stack development capabilities with JavaScript, React, HTML/CSS, TypeScript, and WebRTC

DevOps & CI/CD
Jenkins, Bitrise, GitHub, GitLab, and Fastlane implementation for continuous integration and deployment

Languages

GermanBasic knowledgeEnglishFluentFrenchGoodDutchBasic knowledgePolishBasic knowledgeRussianNative speakerUkrainianNative speaker

Project history

Senior Software Engineer

GlobalLogic Ukraine
Trusted Interviewer on-demand for iOS and macOS positions, leading technical interviews and advanced technologies implementation including CoreML, ARKit, and MetalKit

Head of Digital Transformation Department

Credit Dnipro Bank
Leading digital transformation of mobile apps, building mobile services architecture, managing iOS/Android development teams, and implementing banking solutions with payment integrations

Senior IT Consultant

TMC
iOS/Android/Xamarin/macOS development consulting for Victana in Edegem and Zapware in Hasselt, managing mobile developers

Senior IT Consultant

Proximus
Development of Proximus TV iOS application, managing iOS development team, implementing Objective-C code migration to Xamarin and Swift UI modules

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