Rostyslav L.
Unreal Engine 5 C++ & Multiplayer Developer | Performance Optimization
Multiplayer desyncs. Frame drops under load. Hardware that won't stay in sync. If that's the wall you've hit, you need a UE5 developer who thinks in systems, not just Blueprints. I'm a C++ engineer focused on Unreal Engine 5 performance, networking, and hardware integration, for teams that need stable frame rates and code that holds up in production. Experience: • 1+ year (NDA) writing real-time C++ for a multi-display interactive hardware device: synchronized rendering across modules, sensor input (accelerometer/gyro), tight CPU/RAM budgets • Ongoing UE5 VR contract (C++ / Blueprints) • Multiplayer networking shipped on two game projects • Custom engine-level work: UDP voice/spatial audio plugin, binary serialization for netcode, OpenCV integration Public code sample (see Portfolio): VisionStream-CPP, a C++20 multithreaded camera pipeline with frame buffer synchronization. Core focus: ✓ UE5 gameplay & network replication (C++ / Blueprints) ✓ Multiplayer debugging: desyncs, replication issues, bandwidth ✓ Profiling & optimization: Unreal Insights, memory pools, CPU/RAM budgets ✓ Custom C++ plugins & Win32 integration ✓ VR and real-time interactive applications How I work: clear written updates, profiling data before and after every optimization, and code your team can maintain after I'm gone. Based in Ukraine (Kyiv time, UTC+2/+3), with overlap with EU and US mornings. Tell me what's breaking and on what hardware, and I'll tell you where I'd start looking.
Earnings and projects
Last 6 months ÷ 4.7 months active (since Jun 2026)
Last 6 months: $2.2k
Billed in all: $2,300$2.3k
$551 in the last 6 months
Across 6 contracts
Across 7 contracts
Earnings, last 30 days
Skill rankings: Top 16% in C++
Ranked by MRR among everyone on Upwork with the skill.
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