Volodymyr Kartavyi

I am a full-stack software engineer with 15+ years of experience shipping web, mobile, and desktop applications from MVP to large-scale, robust systems. I focus on fast, reliable UX, simple architectures, and clear business impact, and I love working with great teams on hard problems. ► Skills: • Front-end development (React, Tailwind, Rust/WASM) • Offline-first and multi-user collaboration systems (OT, CRDT, OPFS) • Performance optimization (rendering, data flows, perceived latency) • Real-time audio/video recording and streaming (WebRTC, HLS) • Building large-scale distributed, fault-tolerant systems • Microservices architecture • Modern data architectures (durable objects, event-driven, stream processing, etc.) • AWS, GCP, Cloudflare cloud architecture • Computer graphics (WebGL, Canvas2D, Skia) • Game development (Pixi, Phaser, ECS) • Cross-platform mobile development and distribution (Swift, Kotlin, React Native) ► Preferred technologies: • Runtimes/Platforms: Node.js, Electron, Android, iOS, macOS • Languages: Javascript (Typescript), Rust, Java, Kotlin, Objective-C, Swift • Databases: PostgreSQL, SQLite, MongoDB, DynamoDB, Cassandra • Messaging: Kafka, RabbitMQ (AMQP), BullMQ (Redis) • API/Protocols: REST, gRPC, Protobuf, Bare (vbare), GraphQL • Libraries/Frameworks: NestJS, Fastify, React, React-Native, Expo, Next.js, Tanstack, Yjs • State Management: MobX, Zustand, Redux • AI: Vercel AI SDK, LangChain, Replicate, fal, transformers.js, RAG • DevOps: Nomad, Kubernetes, Terraform, ArgoCD, Docker, Fastlane, GitHub Actions • Cloud: GCP, AWS, Cloudflare, Firebase, DigitalOcean • Automation/Testing: Playwright ► Interests: • Learning new skills (currently learning guitar) • Gaming, indie game development • Traveling, mountain running, hiking, yoga, meditation • Open-source contribution • Coding competitions (not too much these days)