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Vladyslav Semenchenko

Hi! I'm Vladyslav - an iOS engineer with 12+ years of experience building apps people rely on every day. I currently work at TabTrader BV, where I develop a high-performance cryptocurrency trading platform used by over 500 000 people. In parallel, I serve as CTO at Your Accessible Flight, an accessibility-focused travel startup.

My core expertise spans Swift and SwiftUI, fintech charting engines (Core Graphics, Metal), BLE/IoT hardware integration, and Swift Concurrency. I care deeply about architecture - MVVM, Clean Architecture, and testable code - and I've led teams as well as shipped solo.

Outside of engineering, I'm into music, artificial intelligence, and robotics. I find that cross-disciplinary curiosity makes for better software.

Skills

Swift
Objective-C
SwiftUI / Combine
Core Graphics / Metal
Swift Concurrency
BLE / Hardware
MVVM / Clean Architecture
Python / C++
CI/CD / Fastlane

Experience

Nov 2024 — Present

CTO & R&D

Your Accessible Flight

Co-founded and lead development of an AI-powered platform for barrier-free air travel, verifying mobility aid compatibility and planning accessible journeys (iOS beta at youraccessibleflight.info). Built B2C (Swift/SwiftUI + Android) and B2B apps, owning architecture, product, and migration from Firebase to custom backend. Launched RAG-based intelligent chat assistant and exploring computer vision + autonomous agents for proactive accessibility features. Secured EU grants and multiple innovation awards.

Aug 2019 — Present

iOS Engineer

TabTrader BV

Built a high-performance custom charting engine from scratch with Core Graphics for real-time crypto visualization, outperforming competitors in speed and responsiveness. Owned the flagship real-time trading interface (orderbook, candles, positions) with zero crashes and smooth performance on legacy devices. Led migration from UIKit to SwiftUI + Combine, refactoring >50% of the app, achieving 99.8% crash-free sessions and 4.7/5 App Store rating. Owned ~50% of codebase, and drove features that boosted subscriptions.

Feb 2025 — Aug 2025

iOS Engineer

Echo Base Global

Contributed iOS engineering expertise (Swift, SwiftUI, performance optimization) to mobile product development in a collaborative team setting.

Sep 2018 — Aug 2019

Lead iOS Engineer

AURA Band

Architected and developed the full iOS + Apple Watch companion app for AURA Band wearable from scratch, with >80% unit test coverage and deep HealthKit integration. Engineered reliable BLE stack for real-time body composition data, pairing, firmware updates, and error handling. Led technical support and rapid OTA fixes during CES 2019 launch, ensuring flawless demos and early market success.

Aug 2017 — May 2018

Senior/Lead iOS Engineer

Motorsport.com

Led development of Apple TV app, flagship iOS news/results app, and native Swift rewrite of legacy React Native app for better performance and stability. Mentored mobile team (iOS + Android), guided juniors, and accelerated delivery in fast-paced environment. Established CI/CD, PR workflows, automated testing, and technical documentation from the ground up.

Sep 2014 — Aug 2017

iOS Developer

IC Realtime

Independently shipped three iOS surveillance apps: school monitoring, 360° panoramic camera companion, and unified multi-camera manager. Implemented low-latency OpenGL ES video rendering and reliable BLE device control. Improved stability through optimizations and testing; pioneered team processes including environments, workflows, and release standards.