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Igor Cheliadinski

Principal engineer with frontend roots and a systems mindset, building for the web since 2014 and now for iPhone too.

Based in Seattle, WA

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Selected Work

Projects spanning product engineering, frontend architecture, and systems thinking. Previews are illustrative sketches, not production code.

Loremark — Collect Your Life

Building a web and iPhone product that turns lived experiences into collectibles: work through a Collection, like every US National Park or the IMDb Top 250, and each completed item is revealed as a Mark that keeps its memories and people. A full-stack TypeScript monorepo with a three.js reveal stage, a typed API, and an admin app where an AI chat drafts catalog entries and image briefs for approval before any image is generated.

  • TypeScript
  • React
  • Three.js
  • Hono

Temper — iOS Training Timer

A personal training app for iPhone and Apple Watch that runs intervals, a stopwatch, or open rounds, announces each phase change aloud, and saves workouts with heart rate to Apple Health. Timing and phase logic live in a Swift package tested on macOS without a simulator. The app ships a Live Activity, App Intents, and a Watch companion that shows heart rate zones and taps the wrist on each cue.

  • Swift
  • SwiftUI
  • watchOS
  • HealthKit

Electives AI Simulations

Built AI-powered workplace simulations that let learners practice realistic conversations, get live coaching, and repeat tailored scenarios for stronger on-the-job performance.

  • React
  • TypeScript
  • Product Engineering
  • Voice AI

AR Virtual Try-On (Web)

Preview a lipstick shade (illustrative, no camera)

Built web-based AR try-on experiences for a global beauty brand, including eyeshadow and lipstick features that used the device camera for responsive, realistic cosmetic previews.

  • Three.js
  • TensorFlow.js
  • MediaPipe
  • WebAssembly

Enterprise Web Platforms

Built and optimized large-scale web platforms for Fortune 500 teams in finance and e-commerce, while leading distributed engineering teams and partnering with stakeholders to deliver reliable production systems.

  • React
  • Angular
  • Node.js
  • Performance Optimization

Accessible E-Commerce Checkout

Demo fields · Tab through, nothing is sent

Built advanced accessibility improvements for a high-traffic e-commerce checkout, targeting WCAG AAA with robust external keyboard support on mobile and tablet devices, screen reader compatibility, and accessible validation.

  • React
  • TypeScript
  • Web Accessibility
  • Semantic HTML

Career Journey

Building digital products and engineering systems since 2014

  1. 2023

    Principal Engineer

    Contributing to a membership and learning platform by shipping product improvements with strong maintainability and delivery quality, while driving company-wide AI adoption across engineering, sales, and customer success.

  2. 2021

    Lead Software Engineer

    Delivered frontend and full-stack solutions for Fortune 500 clients, with emphasis on architecture decisions and long-term product stability.

  3. 2017

    Senior Software Engineer

    Worked on user-facing web products in a high-scale digital entertainment context with focus on responsiveness and UX quality.

  4. 2014

    Software Engineer

    Started engineering career building robust web interfaces and learning how to balance product goals with technical constraints.

Get in Touch

Open to Principal and Staff roles and contract work in AI product engineering, frontend architecture, and accessibility.

I focus on outcomes, not stacks: turning constraints, context, and intent into software that is maintainable, predictable, and useful.