Principal Engineer with 23+ years architecting mission-critical systems — from Yandex's core UI framework (pioneered BEM, now an industry standard) to Oracle's internal developer platform serving 50+ teams. Most recently built the Spectra v2 UI (3x faster, 99.9% SLI) and oca-proxy, an LLM orchestration platform with multi-model arbitration and MCP integration. Deep expertise in React, TypeScript, full-stack architecture, and AI/LLM tooling — including production on-device AI in the browser (WebGPU, local LLMs, RAG); led distributed teams of 15+ across three continents. Authorized to work in the U.S. · No sponsorship required.
Professional Experience
Principal Member of Technical Staff (IC-4)
- Solely architected and built the Spectra v2 UI from scratch, replacing a legacy read-only interface with a feature-rich management interface in ~3 months
- Delivered 3x faster UI performance vs v1 with optimized Core Web Vitals (LCP, CLS, INP); supporting 50+ internal engineering teams
- Maintained 99.9%+ SLI over 4 years; established code standards and performance monitoring practices; participated in on-call rotations
- Provided technical leadership as the team scaled from 2 to 7 engineers; owned frontend infrastructure and Kubernetes deployment configuration; established comprehensive Playwright E2E test coverage
- Leveraged AI-powered coding agents (Claude, GitHub Copilot) to accelerate feature delivery; achieved ~30% faster development cycles
- Developed MCP servers integrating Spectra tooling with AI/LLM workflows; built Node.js User Profile Service for server-side persistence and cross-team integration
- Architected oca-proxy — comprehensive LLM orchestration platform featuring multi-prompt execution, model arbitration across Claude/OpenAI, prompt catalog management, and flexible MCP/prompt inlining for advanced routing and decision-making
- Implemented RFC6902 JSON Patch optimization for User Settings Service; reduced network payload by 60% through delta-only transmission
Senior Frontend Engineer / Tech Lead
- Rebuilt legacy platform from scratch in React/Redux/TypeScript with WebComponents and React DnD; built accessible components following WCAG guidelines for complex report-generation UI serving VIP banking clients
- Engineered parameter UI supporting 1000+ interdependent parameters across dozens of widgets with complex validation logic, cross-widget interactions, and conflict detection; implemented nested tables with hierarchical groups and multi-select
- Managed complex state using Redux Toolkit and JsonPath for efficient querying; implemented frontend + backend validation with business logic; generated valid JSON → Server PDF with live preview
- Achieved native-app-level performance and responsiveness across browser and iPad (portrait/landscape); optimized rendering performance using DevTools profiling, lazy-loading, and code-splitting; implemented automated regression testing across browser and iPad targets
- Drove technical vision and excellence for a distributed engineering group of 15+ across the US, Europe, and India; mentored a core team of 5 engineers; established code quality standards, testing strategies, and CI/CD pipelines
Senior Frontend Engineer / Tech Lead
- Architected and solely built photographer-matching platform for VIP clients with matching algorithm and full frontend; generated tens of thousands of dollars per contract across dozens of active contracts — core revenue driver
- Refactored complex multi-subsystem media asset management platform spanning Angular 1-2; managed migration complexity with separate codebases; served as primary decision-maker for architecture and technical roadmap
- Built bulk photo upload system with intelligent retry queue, real-time progress tracking, error recovery; implemented infinite-scroll gallery with performance optimization for hundreds of images
- Led sub-team of 3 engineers; conducted interviews, established mentoring programs; relocated to Seattle to support distributed team across geographies
Senior Frontend Developer
- Improved core syntax-highlighting and text-underline engine using Mutation Observers; resolved performance hangs on long texts; implemented WebSocket-based synchronization for cross-device state management
- Ported Chrome-only rendering engine to IE, Firefox, Opera, Safari, and other contemporary browsers; extensive cross-browser optimization, testing, and performance tuning
- Optimized widget performance and user experience; automated deployment to Chrome Store, reducing manual deployment from 1-2 days to minutes; wrote comprehensive test coverage
Senior Frontend Engineer / Tech Lead
- Architected and optimized a real-time social streaming widget (live chat, group channels, emoji reactions, user profiles) for live-streaming events — scaled to 1M+ concurrent users using polling-based architecture; optimized chat performance with Canvas-based animations for active user dashboards
- Developed a cross-platform trading app for precious metals (browser & iPad): real-time D3-powered charts, buy/sell flows, portfolio management; achieved native-app-level performance across portrait/landscape modes using advanced CSS and JavaScript optimization
- Built UI for AI-powered security camera system admin dashboard — people counting, dwell time, occupancy analytics; one of the first products of its kind (~2013)
- Performed comprehensive load testing up to 1M+ RPS backend capacity using Yandex Tank; speaker on UI Performance (Odessa.js) and Performance Testing (DevChallenge.it judge & speaker)
Frontend Engineer
- Core contributor to the Lego team — Yandex's internal UI framework used by hundreds of teams and thousands of developers; helped pioneer BEM (Block-Element-Modifier) methodology, now the industry standard for CSS architecture and component design
- Optimized Yandex's ad display widget (banner network) — the company's core revenue driver — fixing cross-site integration issues and improving load speed; achieved ~2–3% CTR increase, generating millions of dollars in additional annual revenue
- Led UI/UX redesigns and new product designs across Yandex's flagship services: Ya.ru social network, Yandex Fotki photo hosting, Yandex News; delivered special-event landing pages for FIFA World Cup, Eurovision, Olympics
- Core contributor to Gemini — a visual regression testing framework with screenshot-based comparison (later succeeded by Hermione); pioneered the concept while the field was nascent, which became the industry standard for visual regression testing
- Developed Yandex's internal Wiki with custom Markdown dialect featuring user tags, task system, calendar integrations, and deep Jira/HR system integration — critical tool across the organization
- Built WYSIWYG site builder for Narod.ru (now Yandex Disk) with drag-and-drop interface; expert in frontend performance optimization (image delivery, CSS selectors, reflow/repaint cycles, network stack); load tested at 100K+ RPS; created imgo — open-source CLI tool for image optimization
Web Department Team Lead / Tech Lead
- Led front-end team; delivered 50+ corporate website redesigns for well-known brands.
- Created M5 — internal CSS framework used across all agency projects.
Web Developer
- Customized 1000+ website templates across WordPress, Joomla, OSCommerce, vBulletin, and static HTML.
AuraSR — Image Upscaler
Upscale and enhance images locally in your browser using state-of-the-art AI models (SwinIR, SPAN, Real-ESRGAN, OmniSR, DAT) accelerated by WebGPU. 100% secure and private, no uploads.
AeroCheck Spell Checker
A private, local-first spelling, grammar, and punctuation checker powered by Chrome's native Proofreader API. Secure, offline, and fast.
Local Gemini AI Sandbox
Fully client-side AI Agent sandbox running Vite+React inside a WebContainer, powered entirely by Chrome's local Gemini Nano.
FontDetect.local
Identify fonts from images by matching against your locally installed system fonts. 100% private, runs entirely in your browser without any server uploads.
Nebula Diffusion
Local client-side text-to-image generator using WebGPU and WASM fallbacks. Run Stable Diffusion and Janus Pro in browser safely.
Local Gemini AI Movie DB
Interactive dashboard containing 500 top-rated movies of all time, utilizing built-in Chrome Gemini Nano AI for instant on-device data analysis.
Local CIA Factbook RAG
100% client-side RAG application that downloads and runs an embedder model, Qwen 0.5B LLM, and a 194MB vector database (57,000+ facts) directly in your browser.
WebMCP & Chrome Prompt API
A premium client-side demonstration of the Web Model Context Protocol (WebMCP) and the Chrome AI Prompt API running on-device Gemini Nano with real-time tool calling.
AuraDepth — 3D Depth Studio
Client-side AI 3D depth studio. Click to sample depth planes, apply realistic lens bokeh, color-grade by distance, and export masks or cutouts locally using ONNX Runtime Web with WebGPU and WASM fallbacks.
AuraBG — Background Remover
100% client-side AI background removal — no server, no image upload, no data leaving the browser. Studio-quality segmentation (RMBG-1.4, MODNet, U²-Net) via Transformers.js with WebGPU acceleration and a WASM/SIMD fallback.
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