Open to opportunities

Danny Lee

@dannylee

Message

Senior frontend engineer building React/TypeScript/Next.js apps for fintech, regtech, and Web3 workflows.

Italy

Message

What I'm looking for

I’m looking for a Senior Frontend role where I can build React/TypeScript experiences for high-stakes fintech or Web3 products—owning AI-assisted risk workflows, real-time dashboards, thorough testing, and performance-focused engineering.

I’m a Senior Frontend Engineer with 7+ years building React, TypeScript, and Next.js applications for fintech, regtech, and Web3 platforms. I focus on AI-assisted risk workflows, real-time dashboards, testing, and performance optimization—turning complex operational data into clear, reliable user experiences.

At Conio, I developed React and TypeScript interfaces for wallet activity review, custody workflows, transaction history, and audit-log screens. I integrated risk and compliance APIs with TanStack Query and GraphQL, helping analysts prioritize high-risk alerts and reduce manual review effort by 30%, and I migrated data-heavy pages to Next.js to reduce dashboard load time by 35% using virtualization, memoization, and route-level code splitting.

Experience

Work history, roles, and key accomplishments

Current

Senior Frontend Engineer

Current

Conio

Jan 2023 - Present (3 years 6 months)

Developed React and TypeScript interfaces for digital-asset operations tools, including wallet activity review, custody workflows, transaction history, and audit-log screens. Integrated risk and compliance APIs, migrated reporting pages to Next.js with performance optimizations, implemented role-based access controls and audit-friendly UI states, and added Vitest/RTL/Playwright coverage for audit-

React TypeScript Next.js Tanstack Query GraphQL Virtualization Memoization Route Level Code Splitting Role Based Access Control (RBAC)Audit UI States Vitest React Testing Library Playwright Testing Performance Optimization

Frontend Engineer

CoinsPaid

Jun 2020 - Dec 2022 (2 years 6 months)

Built React and TypeScript dashboards for crypto payment processing, including merchant onboarding, transaction status, settlement history, refunds, and payout configuration. Designed Web3 transaction views with Ethers.js/Viem, connected REST and WebSocket APIs for real-time updates, migrated Redux patterns to Redux Toolkit and RTK Query, and implemented Remix-based merchant settings and settlemen

React TypeScript Redux toolkit Redux RTK Query Tanstack Query Viem Web3 Transaction Views REST APIs WebSockets Remix Dashboards Validation Server Side Form Handling

Frontend Developer

Form3

Aug 2018 - May 2020 (1 year 9 months)

Implemented frontend features for payment operations tools, including payment search, account lookup, transaction detail pages, and exception-management workflows. Maintained legacy Vue/Nuxt admin screens for payment exceptions and expanded Jest and React Testing Library coverage for payment search, filtering, and transaction detail flows.