Sergey Koval

Rising Codementor

US$20.00

For every 15 mins

ABOUT ME

iOS/macOS Tech Lead, Swift language teacher

I’m a seasoned Engineering Manager with 15+ years of wrangling mobile apps and outsmarting hackers. I’ve led teams through digital makeovers in banking, built AI-boosted iOS/macOS products that actually delight users, and even authored the go-to guide “Secure Development of iOS and macOS Applications.” When I’m not corralling SwiftUI or teaching CoreML new tricks, you’ll find me sharpening Threat Explorer, my privately-held penetration-testing sidekick.

What I bring to the table
• Leadership with a security lens: Ran digital-transformation projects in FinTech and healthcare, aligning roadmaps with compliance (ISO, NIST, FDA, MDR, GDPR, HIPAA, etc).
• AI-powered products: Integrated CoreML, OpenAI, Anthropic Claude, Google Gemini and co. into mobile experiences that users actually love.
• Cross-functional glue: Speak fluent Swift, Obj-C, Python - and five human languages - so I bridge gaps between designers, data scientists, and auditors without breaking a sweat.
• Hands-on pedigree: From MetalKit graphics to ARKit demos to threat modeling, I still dive into code reviews and pen-test reports.

worked with Apple’s Screen Time API to build features like app usage tracking, setting limits, and managing downtime. I used it in a parental control and productivity context, focusing on user privacy and a smooth experience across different iOS versions. I’m comfortable handling the permissions and settings required to make Screen Time features work reliably, like Managed Settings and the Communication Limits API.

If you need a leader who can balance strategic vision, bullet-proof architecture, and the occasional dad joke about semicolons, let’s connect.

Amsterdam (+02:00)

Joined June 2020

EXPERTISE

iOS

10 years experience

Swift Objective-C

Swift

8 years experience

macOS iOS

Android

3 years experience

2 years experience

CI/CD

8 years experience

Cybersecurity

5 years experience

3 years experience

REVIEWS FROM CLIENTS

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SOCIAL PRESENCE

GitHub

femspace

Project for women

Objective-C

kovallux

My personal repository.

EMPLOYMENTS

Information Technology Consultant

GlobalLogic Ukraine

2021-12-01-2025-03-01

‣ Cybersecurity Architect and Lead iOS engineer for HCSS https://www.hcss.com -- maintained and bugfixed a production construction softwa...

‣ Cybersecurity Architect and Lead iOS engineer for HCSS https://www.hcss.com -- maintained and bugfixed a production construction software with many corporate users -- implemented security practices and 360 vulnerability assessments and games -- added sophisticated CI/CD secure workflows with Xcode Cloud and additional Bash scripts -- added advanced handling of SonarQube and Github Actions (e.g. code coverage reporting from Xcode) ‣ Lead macOS Engineer for Dolby Labs https://www.dolby.com -- delivered 3 prototype apps as R&D projects for photo and video media handling -- invented an innovative methods of 3D camera shooting and multiplanar images fusing using CoreML -- wrote 3D rendering software using Metal and wrote shaders using Metal Shading Language ‣ Trusted Interviewer on-demand for iOS and macOS positions in GlobalLogic. I lead technical interviews and technical screenings and help decide if a candidate can be shown to a client. ‣ Cyber security lead for both projects. -- Designed, implemented and governed cyber security architecture, while leveraging industry standard threat modeling and risk management frameworks. -- Coordinated security assessments, risk analysis, and threat modeling to identify vulnerabilities. -- Managed penetration testing engagements with third party organization. -- Experience working with standards such as ISO 13485, ISO 14971, IEC 62304, NIST 800-30, NIST 800-53, AAMI TIR 57, UL 2900-2-1, IEC 62443. -- Ensuring compliance with FDA, MDR, IVDR, GDPR, HIPAA.

Machine learning

Continuous Integration

Swift

Machine learning

Continuous Integration

Swift

Ethical Hacking

Cybersecurity

Vulnerability Assessment

Cryptocurrency

Cloud Services

iOS

FinTech

Mobile App Development

Information technology

System security

DevOps

Penetration test

Business transformation

Security and compliance management

Owner

Bro Lab IT School

2021-09-01-2024-05-01

• Teaching courses, e.g. “iOS development in Swift”, etc. https://www.bro-lab.it • Workshops on iOS engineering and Secure Mobile App Dev...

• Teaching courses, e.g. “iOS development in Swift”, etc. https://www.bro-lab.it • Workshops on iOS engineering and Secure Mobile App Development • Coaching sessions • Mentoring students

Product launch

Technical Product Management

Product launch

Technical Product Management

Head of Digital Transformation Department

Credit Dnepr Bank

2020-09-01-2021-11-01

Leading the digital transformation of banking mobile apps. - Built and described the architecture of the mobile services system. - Lever...

Leading the digital transformation of banking mobile apps. - Built and described the architecture of the mobile services system. - Leveraged and validated external API integrations, e.g. selfy liveness, and business intelligence services. - Hired and managed a team of mobile developers (iOS/Android) for two simultaneous projects. - Managed transformation of UI/UX/CX to a new level (total redesign of the app). - Promoted practices of agile workflow across the bank. - Implemented integrations with middleware, credit factory, Apple Pay, Google Pay, Huawei Pay, Payoneer, Wise, and updated cards transaction bus. - Created full digital onboarding workflow (user forms, uploading and recognizing documents, ordering a bank card, and delivering it to the customer). - Built modules for cash credits, mortgage loans, and deposits in the app with fully automatic scoring, decision making, and document signing flows. - Helped to integrate innovative P2P payment methods, e.g. Pay to phone number, Pay to any credit card in any country. - Participated in launching 3DS payment confirmations via mobile app. - Consulted bank departments on various digital aspects. - Designed, implemented and governed cyber security architecture, while leveraging industry standard threat modeling and risk management frameworks. - Coordinated security assessments, risk analysis, and threat modeling to identify vulnerabilities. - Managed penetration testing engagements with third party organization. Technical stack: • Swift, Obj-C • UIKit, CoreAnimation • CoreLocation, MapKit • CommonCrypto, Security • MobileServices • REST API • Realm • RxSwift • Core ML

PROJECTS

Threat Explorer macOS application

2022

Discover the eye-opening truth about iOS and macOS app security with our powerful risk analysis and threat assessment described in this b...

Discover the eye-opening truth about iOS and macOS app security with our powerful risk analysis and threat assessment described in this book. Uncover the hidden vulnerabilities lurking within apps on the AppStore that even average hackers can exploit. Many app owners and developers don’t realize that their apps may be full of threats. Those vulnerabilities are waiting for an average hacker right in the AppStore. Let’s explore together what we can harvest from the app bundle after downloading IPA file from the AppStore.

Video Upscaler 16K & Converter

2020

Upscale your videos to 4K, 8K or 16K with the best quality possible, accepted by most social media apps, with crisp picture details and s...

Upscale your videos to 4K, 8K or 16K with the best quality possible, accepted by most social media apps, with crisp picture details and smooth motion. We experimented a lot with conversion settings and found the best combination of video settings for social media videos with a focus on video quality.