Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

I am a staff-level C++ engineer with 20+ years of experience building high-reliability, cross-platform systems across Linux, Android devices, embedded and WebAssembly. I’ve led large migrations and platform modernization for a global payments company, and I design robust data/telemetry pipelines and shared libraries used by dozens of teams. I enjoy hands-on delivery, architecture work, and strong team leadership, and I thrive in challenging, performance-driven environments. I’ve driven architecture decisions, led cross-team initiatives, and collaborated with security/compliance and product teams to deliver scalable, observable platforms. I’m comfortable operating at both the code and the program level, mentoring engineers and shaping long-term maintainability.…I am a staff-level C++ engineer with 20+ years of experience building high-reliability, cross-platform systems across Linux, Android devices, embedded and WebAssembly. I’ve led large migrations and platform modernization for a global payments company, and I design robust data/telemetry pipelines and shared libraries used by dozens of teams. I enjoy hands-on delivery, architecture work, and strong team leadership, and I thrive in challenging, performance-driven environments. I’ve driven architecture decisions, led cross-team initiatives, and collaborated with security/compliance and product teams to deliver scalable, observable platforms. I’m comfortable operating at both the code and the program level, mentoring engineers and shaping long-term maintainability.

Oleksandr Movchan

App Developer, Architect, Back-End Developer, +7





I am a staff-level C++ engineer with 20+ years of experience building high-reliability, cross-platform systems across Linux, Android devices, embedded and WebAssembly. I’ve led large migrations and platform modernization for a global payments company, and I design robust data/telemetry pipelines and shared libraries used by dozens of teams. I enjoy hands-on delivery, architecture work, and strong team leadership, and I thrive in challenging, performance-driven environments. I’ve driven architecture decisions, led cross-team initiatives, and collaborated with security/compliance and product teams to deliver scalable, observable platforms. I’m comfortable operating at both the code and the program level, mentoring engineers and shaping long-term maintainability.…I am a staff-level C++ engineer with 20+ years of experience building high-reliability, cross-platform systems across Linux, Android devices, embedded and WebAssembly. I’ve led large migrations and platform modernization for a global payments company, and I design robust data/telemetry pipelines and shared libraries used by dozens of teams. I enjoy hands-on delivery, architecture work, and strong team leadership, and I thrive in challenging, performance-driven environments. I’ve driven architecture decisions, led cross-team initiatives, and collaborated with security/compliance and product teams to deliver scalable, observable platforms. I’m comfortable operating at both the code and the program level, mentoring engineers and shaping long-term maintainability.

Available to hire

I am a staff-level C++ engineer with 20+ years of experience building high-reliability, cross-platform systems across Linux, Android devices, embedded and WebAssembly. I’ve led large migrations and platform modernization for a global payments company, and I design robust data/telemetry pipelines and shared libraries used by dozens of teams. I enjoy hands-on delivery, architecture work, and strong team leadership, and I thrive in challenging, performance-driven environments.

I’ve driven architecture decisions, led cross-team initiatives, and collaborated with security/compliance and product teams to deliver scalable, observable platforms. I’m comfortable operating at both the code and the program level, mentoring engineers and shaping long-term maintainability.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Intermediate

Intermediate

Language

English

Fluent

Ukrainian

Fluent

Dutch

Beginner

German

Beginner

Work Experience

CO-FOUNDER/CTO at STAR MILL B.V.

January 1, 2023 - November 21, 2025

Designed and implemented a high-performance C++20/23 cross-platform engine (Android/iOS/Windows/macOS/Linux/WebAssembly), with custom ECS, rendering, audio, asset pipelines, and real-time systems. Built latency-sensitive subsystems including custom IO layers, memory/resource managers, event systems, threading primitives, and optimized math/geometry routines. Integrated analytics pipelines (PostgreSQL), telemetry ingestion, custom serialization formats, real-time event queues, and platform SDKs. Architected CI/CD and multi-target build systems using CMake, clang/LLVM, Android NDK, and automated packaging pipelines. Led code quality, testing, debugging, and profiling across platforms. Owned full technical lifecycle.

STAFF ENGINEER at ADYEN N.V.

January 1, 2024 - January 1, 2024

Led migration from a multiprocess legacy stack to an Android-native, service-based architecture for payment terminals; defined IPC contracts and shared libraries enabling independent deployment by multiple teams. Designed and delivered a fault-tolerant analytics/telemetry pipeline (offline ingestion, back-pressure control, retries, batching) to improve observability and incident response. Drove cross-team alignment; mentored engineers and reviewed critical path changes. Collaborated with security/compliance and product to integrate device services with backend APIs and merchant apps.

C++ DEVELOPER at ADYEN N.V.

January 1, 2021 - January 1, 2021

Modernized core device components from C to modern C++ and Kotlin/NDK bridges; introduced reusable libraries and test harnesses. Implemented performance and stability improvements across IO, threading, and storage layers. Shipped features for Android-based payment terminals in coordination with firmware and backend teams.

CO-FOUNDER & CTO (PART-TIME, REMOTE) at NOTUS GAMES LTD

January 1, 2024 - January 1, 2024

Built and maintained a cross-platform C++ engine (Android/iOS/Windows/macOS/WebAssembly) for casual titles. Implemented cross-platform architecture, asset pipelines, and CI for automated level/content testing. Designed and operated backend & analytics infrastructure for live-ops (event ingestion APIs, storage/ETL, cohort & retention dashboards, A/B testing support, alerting). Integrated ads/IAPs/analytics SDKs; optimized rendering and loading performance.

CONSULTANT at LOQED B.V.

January 1, 2022 - January 1, 2022

Developed firmware for a bridge for smart lock systems: ESP32/ESP-IDF, BLE, Wi-Fi, MQTT/HTTPS, OTA. Implemented secure provisioning, connection reliability, OTA updates for both bridge and smart-lock.

SOFTWARE DEVELOPER at VANTACT COMMUNICATION SYSTEMS

January 1, 2021 - January 1, 2021

Built embedded server and secure multi-endpoint communications for Nurse Call devices; implemented indoor location (filtering/estimation) and deep-sleep power management.

ADDITIONAL ENGINEERING (SELECTED) at ControlledCare B.V. / Claricom / Freelance

January 1, 2018 - January 1, 2018

Windows services and web backend for healthcare monitoring; Android/iOS SDKs and server components for messaging/VoIP; Embedded systems (STM32/ESP32/TI), instrumentation, and integrations.

FOUNDER & CEO/CTO at STAR MILL B.V. (PART TIME)

January 1, 2023 - November 21, 2025

Built C++ engine and live-ops/analytics stack targeting Android/iOS/WebGL; engine architecture, performance tuning, CI, SDK integrations, crash/retention analytics.