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Rostyslav L.
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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.

🇺🇦Lviv, Ukraine$20/hr100% JSS5.00 (3)Since Feb 2023

Earnings and projects

MRR
$468

Last 6 months ÷ 4.7 months active (since Jun 2026)

World#80,766 / 412k
🇺🇦Country#3,170 / 14.3k
Revenue, last 30 days
$1.1k

Last 6 months: $2.2k

World#40,155 / 412k
🇺🇦Country#1,722 / 14.3k
Total earnings
$2.2k

Billed in all: $2.3k

World#324,326 / 412k
🇺🇦Country#12,178 / 14.3k
Per project
$446

$551 in the last 6 months

World#193,576 / 412k
🇺🇦Country#8,084 / 14.3k
Projects, last 6 months
4

Across 6 contracts

50% fixed50% hourly
World#51,815 / 412k
🇺🇦Country#2,156 / 14.3k
Projects in all
5

Across 7 contracts

43% fixed57% hourly
World#266,044 / 412k
🇺🇦Country#10,266 / 14.3k

Earnings, last 30 days

$2.3k+$1.1k earned in the last 30 daysBilled in all, before Upwork's fee · drag across the chart to see what was earned in any stretch
$1k$2k$3kOct 9Oct 24Nov 8

Skill rankings: Top 16% in C++

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  7. #145Virtual Reality785 freelancers · 🇺🇦 #14Top 18%
  8. #149Embedded C658 freelancers · 🇺🇦 #11Top 23%