Bayarbileg Sainbayar

Product Designer · Design Engineer

About

Product Designer & Design Engineer with 5+ years shipping consumer products end to end — ride-hailing, event ticketing across web and native apps, Web3 identity on Base. Being the only designer on the product is how I ended up building the infrastructure too: a multi-brand design system across five products, and two Figma plugins I wrote from scratch to sync and audit it.

Experience

Product Designer & Design Engineer

MEZORN LLC

Mar 2025 - Present

Owned the driver-side scheduled ride feature end to end — airport and festival dispatch zones, eligibility gating at the job card, a three-stage reminder system with defined response windows, and a seven-state job history — plus the loyalty system and the Dynamic Island experience, pixel-level on both. Built Grid, the multi-brand design system underneath it: 1,248 tokens and 700+ components across UBCab, UBExpress, UBEats, and payment products, usable in four months and now the source of truth for every designer on the team. Its three-tier token architecture lets designers and engineers keep separate vocabularies while engineering stays on Material 3. I also wrote and shipped the two Figma plugins that maintain it: Token Updater, which commits tokens to GitHub as a single atomic change with a diff preview, and Token Checker, which audits files against 280+ valid tokens and rebinds violations in one click — 1,000+ runs in daily team use.

Lead Product Designer

Portal.mn, MEP LLC

Nov 2023 - Mar 2025

Designed Mongolia's event ticketing platform across responsive web, iOS, and Android — discovery, event pages, seat selection, checkout, ticket wallet, organiser tools, and resale — working with one to three engineers and making product calls jointly. Designed the seat map as composable primitives (sections, rows, seats) rather than per-venue drawings, so a new venue is configured instead of designed and the platform can onboard a client without a designer in the loop. Built the in-platform resale marketplace end to end — listing, pricing, discovery alongside primary inventory, and ownership transfer — so a resold ticket stays verifiable at the door. Shipped checkout across 15+ payment providers; peak event sold 25,000+ tickets. Built the design system, brand, and event artwork alongside the product.

Product Designer

BASE NAME SERVICE, MEP LLC

Dec 2022 - Nov 2023

Designed a Web3 naming service on Coinbase's Base network, backed by Orange DAO — name search, registration and minting, wallet onboarding, identity management, and resale, plus the design system underneath, working with an international dev team and DAO contributors. Put name search ahead of wallet connection, inverting the category default so users reached the highest-friction step already motivated rather than being asked to commit first. Built the mint flow around an operation that is slow, irreversible, and unverifiable, where most of the design work is telling people what state they're in. 4,133 names minted by 1,202 holders; won the Thank APE Builders Contest, 2023. Wound down in August 2024 when Coinbase launched Basenames and honoured every BNS holder with a free Basename.

UX/UI Designer

MongolNFT, MEP LLC

Mar 2022 - Dec 2022

Design across MongolNFT's Web3 and SaaS portfolio — marketplaces, NFT platforms, and digital services — establishing shared systems and flows across 10+ projects, and working with cross-functional teams to align design decisions with product goals.

UX/UI Intern

Infinite Solutions LLC

Aug 2021 - Mar 2022

Designed and shipped the interface for a supply chain traceability application at one of Mongolia's fintech infrastructure companies, implementing it in Flutter with a focus on real-time data visualisation and usability. Also contributed to a blockchain project whitepaper, bridging design and technical communication.

Education

Bachelor of Science (B.S.)

The University of Michigan

2021 - 2022

Studied computer science fundamentals at the University of Michigan. Transitioned into product design, applying systems thinking and technical problem-solving to UX.

General Studies STEM (ASGSMS)

Washtenaw College

2019-2021

Completed a STEM-focused associate program covering mathematics, computing, and analytical problem solving. The coursework developed a strong foundation for computer science and digital product development.

Certifications

Product Designer, UX Researcher, Product Manager

UXCEL

2026

Product Designer, UX Researcher, Product Manager

UXCEL

2026

Google UX Design

Coursera

2023

Google UX Design

Coursera

2023

Awards

Thank APE Builders Contest

Winner · Base Name Service | ApeCoin Integration

2023

Winner of the Thank APE Builders Contest for developing Base Name Service, a Web3 identity solution integrated with the ApeCoin ecosystem. The project focused on decentralized identity and Web3 infrastructure.

Thank APE Builders Contest

Winner · Base Name Service

2023

Thank APE Builders Contest

Winner · Base Name Service | ApeCoin Integration

2023

Thank APE Merchant Contest

Winner · WOON | Web3 Name ID

2023

Recognized as a winner for WOON, a Web3 naming and identity project designed to simplify digital identity and wallet interactions within decentralized platforms.

Thank APE Merchant Contest

Winner · WOON | Web3 Name ID

2023

Recognized as a winner for WOON, a Web3 naming and identity project designed to simplify digital identity and wallet interactions within decentralized platforms.