Svetlozar Valchev

Prompt-first authoring platform for responsive engine audio.

• Built a portable C++ simulation and audio core with a strict JSON authoring contract, deterministic native and WebAssembly execution, and native/WASM parity testing.
• Built an LLM feedback loop that authors engine-audio behaviour, runs the simulator, evaluates results, and iterates from structured feedback.
• Delivered real-time browser audition, telemetry, revisioned React authoring, and AWS infrastructure covering identity, billing, build processing, and operations.

Stack: C++, WebAssembly, Web Audio, TypeScript, React, LLM tooling, AWS

Cross-platform C++ engine spanning runtime, tooling, multiplayer, assets, rendering, and cloud delivery.

• Built major parts of the asset path from texture and mesh ingestion through cooking, cloud infrastructure, and user delivery.
• Implemented ECS-based replicated state for built-in multiplayer and V8 TypeScript scripting with hot reload.
• Built a native, authenticated MCP subsystem exposing projects, assets, ECS state, play mode, screenshots, networking, and runtime commands to AI agents, with MCP-driven end-to-end testing.

Stack: C++, CMake, V8, TypeScript, MCP, Vulkan, Metal

• Productised LoRA-based ecommerce model generation through job, asset, product, billing, and application integrations.
• Built the Unity editor integration for text-to-3D, image-to-3D, texturing, asset libraries, and import workflows; contributed to the corresponding Unreal integration.
• Contributed to dataset, training, and inference tooling, then integrated a custom terrain model into an Unreal Engine heightmap and material workflow.

Stack: Python, TensorFlow, LoRA, Unity, Unreal Engine 5, React, Node.js, Azure

• Built and maintained FHIR-based clinical systems covering care planning, medications, therapies, patient observations, device data, bed management, and operational dashboards.
• Developed a Three.js clinical body-mapping system with anatomical selection, markers, lasso tools, local caching, and FHIR integration.

Stack: Vue, Aurelia, Three.js, Node.js, Smile CDR, WebGL

• Architected a high-performance IPTV interface and custom memory-conscious MVVM framework for resource-constrained set-top boxes.
• Led a multi-client white-label television platform and its automated interface testing infrastructure.

Stack: JavaScript, WebSocket, custom MVVM

• Built a mobile dress-up game in React Native and led its transition to Unity.
• Delivered the shared backend and internal tools for clothing assets, colours, textures, recipes, blueprints, shopping, authentication, and analytics.

Stack: Unity, React Native, Vue, Node.js, PostgreSQL, Firebase

• Architected multiplayer client/server gameplay systems for instances supporting up to 24 players, including combat, inventory, abilities, match state, NPCs, and replicated interactions.
• Led a multidisciplinary team across engineering, art, and community.

Stack: Core / Manticore, Lua, multiplayer systems

• Built a visual template editor and server-side Canvas/FFmpeg rendering pipeline for personalised digital athlete cards.
• Delivered browser-based 3D previews and AWS rendering infrastructure using Lambda, S3, and queues.

Stack: React, Node.js, AWS Lambda, S3, Canvas, FFmpeg, Three.js