Yurij A.

Senior Frontend Engineer with 10+ years architecting large-scale, high-load applications — now focused on building production-grade UIs for AI products, engineering agentic coding pipelines, and pioneering Generative UI frameworks. Currently founding UI developer at Tesari.ai, building interfaces for an AI-driven intelligence platform where auditability and real-time depth are non-negotiable. I help teams ship LLM-powered interfaces, architect autonomous developer-agent ecosystems, and adopt AI-assisted development workflows (Claude Code, agentic tooling) without sacrificing architecture, performance, or quality. AI ENGINEERING, AGENTIC DEVELOPMENT & GENERATIVE UI • Building production UIs for AI/LLM products: chat & agent interfaces, streaming responses, tool-calling visualizations, human-in-the-loop review flows. • Generative UI Architecture: Designing and implementing systems for real-time, dynamic interface generation, transforming structured LLM outputs into context-aware UI components on the fly. • Agentic Coding Pipelines & Infrastructure: Engineering autonomous developer-agent environments using Claude Code; setting up project contexts, custom agent skills, and multi-agent execution workflows. • Automated Quality & Security Guardrails: Developing specialized monitoring agents dedicated to autonomous code review, continuous technical debt tracking, and security vulnerability detection. • Advanced Workflow Automation: Designing custom agentic orchestrations to automate complex refactoring, end-to-end test generation, and multi-step repository-wide development tasks. • Integrating LLM APIs (Anthropic, OpenAI): Embedding advanced capabilities into apps via high-performance streaming, structured outputs, function/tool calling, and RAG-driven UIs. • Designing UX for AI Trust: Architecting interfaces focused on source provenance, citations, deep auditability, and explainable AI outputs. • Enterprise-Grade Workflows: Establishing AI-assisted workflows that scale without sacrificing core codebase quality, performance, and maintainability. CORE EXPERTISE Frontend Architecture & Scalability • Architecting large-scale, high-performance frontend applications • Microfrontend architecture (Webpack Module Federation, Islands Architecture) • Refactoring and modernizing legacy codebases • Step-by-step migration without functionality loss • Team leadership (up to 5 persons) TECHNICAL SKILLS JavaScript / TypeScript • Modern JavaScript/TypeScript for enterprise applications • Deep OOP knowledge and SOLID principles • Advanced React Patterns: HOCs, Render Props, Compound Components • Unit testing: Jest, React Testing Library, Playwright React • Distributed, high-load applications with TypeScript • Server Components and Concurrent Features (React 18+) • Next.js, Vite, performance optimization • State management: Redux, MobX, Zustand • Bundle size optimization and code splitting Architecture & Systems • Design Systems (Figma tokens, Storybook) • Headless components architecture • Domain-Driven Design and architectural patterns • Monorepo: Nx, Lerna, Turborepo • Private npm registries and UI libraries • Auth management with Okta • GraphQL with subscriptions/real-time Node.js • Backend development with Express/NestJS • TypeORM/Prisma, MongoDB, PostgreSQL • GraphQL implementation Development & Quality • Performance profiling and Web Vitals optimization • Frontend security best practices • Accessibility compliance (WCAG) • i18n and analytics integration • Git workflows, Docker, Kubernetes • Agile methodologies, JIRA, Azure DevOps