Viacheslav Klymenko

Experience

1. Founder / Principal Engineer · GamePrompt

   2026 - Present

   Built and launched a generative-AI product that takes a game from a conversational description to a complete, playable Godot build. Live in production.

   • —Built the agentic harness the product runs on: multi-model LLM routing across Anthropic and OpenAI by task and cost, an MCP server driving a headless Godot build toolchain, and prompt and context pipelines held in git and deployed through CI, so a prompt change is reviewed and versioned like any other commit.
   • —Built the evaluation layer: every generated project must compile and run before it ships, so correctness is verified automatically rather than reviewed by hand.
   • —Instrumented per-model token spend and metered it into customer billing.
   • —Own the full stack and its operation: TypeScript/Next.js services on Firebase, Cloudflare R2 and Workers, Stripe webhooks with idempotent retry handling, authenticated access using HMAC-signed session cookies, and per-tenant authorization rules covered by automated tests.

   TypeScript · Next.js · Godot · MCP · Firebase · Cloudflare Workers · Stripe

2. Principal Game Developer · Originator Inc (Spin Master Inc)

   2023 - Jul 2026

   Technical escalation point for the studio; reviewed and mentored other engineers. Studio closed July 2026.

   • —Engineered an AI-driven story experience in which children create, narrate and illustrate personalized stories using LLM integration and ElevenLabs generative voice.
   • —Built the content-safety guardrails constraining model output for a child audience, validated by two independent red teams that were unable to elicit inappropriate content.
   • —Owned architecture and implementation of the Coloring activity in PAW Patrol: The Game, from design through worldwide iOS and Android release in July 2026.

   Unity · C# · LLM integration · ElevenLabs · iOS · Android

3. Senior Game Developer · Originator Inc (Spin Master Inc)

   2021 - 2023
   • —Shipped Cubric, a 3D voxel world with procedural terrain generation and real-time multiplayer collaboration.

   Unity · C# · Procedural generation · Multiplayer

4. Senior Unity Developer · MaxSpot Media

   2018 - 2021

   Led client architecture and wrote most of the code for a cross-platform casino suite (poker, blackjack, slots).

   • —Built turn resolution, hand state and server-authoritative rules across iOS, Android and WebGL.
   • —Integrated WebSocket and REST services, Photon multiplayer, microservices and third-party plugins.
   • —Led code review and delivery coordination across engineering, QA and production, and owned the multi-platform build and release pipeline.

   Unity · C# · WebSockets · Photon · WebGL

5. Unity Developer · Velocity Airport Solutions

   2015 - 2018
   • —Architected a full-stack VR training platform for airport ground personnel: instructor station, hardware-in-the-loop integration and a synchronized mobile companion app over Photon Realtime.
   • —Built for non-engineer operators to run unaided.

   Unity · C# · VR · Photon Realtime

6. Game Developer and Publisher · Independent Developer & Freelance

   2008 - 2015
   • —Designed, built and published up to 100 original mobile games end to end, covering gameplay, systems, release and live support, totalling 20M+ downloads.
   • —Necronomicon reached Top 100 Games on both app stores.

   ShiVa3D · iOS · Android

7. Programmer, C++ · TikGames LLC

   2006 - 2008
   • —C++ development on AquaSphere and County Fair, both published by Big Fish Games.

   C++ · Nebula engine

Skills

Agentic AI

Claude Code as a daily primary engineering tool, Multi-model LLM orchestration across Anthropic and OpenAI, routed by task and cost, Model Context Protocol (MCP) server in production against a headless build toolchain, Tool and function calling, Prompt and context pipelines versioned in git, deployed through CI, Per-model token and cost instrumentation metered into billing

Evaluation

Deterministic compile-and-run gate on every generated project, blocking release on failure, Correctness measured rather than reviewed, Automated regression and policy testing in CI

Backend & platform

C#, TypeScript / Node, REST and WebSocket services, Webhook handling with idempotent retries, Microservice and third-party integration, Firebase / Firestore, Cloudflare Workers and R2, Stripe billing

Generative media

Three years on the ElevenLabs voice APIs across two shipped products, Automated pipelines producing 3D assets, audio, imagery and code from a text description, Import, validation, versioning, packaging, deployment

Game systems

3Cs: character, camera, control, Combat and interaction systems, Inventory, progression, save systems, HUD and UI integration, multiple game modes, 3D math, procedural generation, physics-driven movement, Photon PUN, Realtime and Fusion, Profiling and memory optimisation across mobile, VR and WebGL

Engines

Unity and C# (expert), Godot (production), Babylon.js with custom shaders (production), ShiVa3D (production, 20M+ downloads), C++ on the Nebula engine, Unreal (working knowledge)

Operations

GitHub Actions CI/CD, Automated regression and policy testing, Structured logging and cost telemetry, Production incident response on a live system

Education

1. M.S., Computer Science / Computer Intelligence · Vinnytsia National Technical University