Eduardo Kegler

Professional Summary

Senior Frontend Engineer (7+ years) specializing in authentication/onboarding and real-time trading interfaces. Shipped measurable outcomes at scale (+35% signup conversion, −20% auth flow load time at Coinbase) and led Web3 wallet-connected DeFi surfaces (AMM, CLOB, perps) with latency-sensitive UIs at Liquid Labs.

Work Experience

Liquid Labs (GTE / gte.xyz)

Senior Frontend Engineer (Contract)

03/2025 - 02/2026 | Remote

Stack: React, TypeScript, Next.js, Zustand, TanStack Query, Storybook, React Hook Form, Zod, Viem, Privy, Vitest, WebSockets, Amplitude, Monorepo, pnpm

As the sole frontend engineer, built 5 core trading surfaces (AMM, CLOB, perpetuals, token launchpad, and portfolio tracking), delivering the platform frontend from zero to a public testnet used by 700k+ users in under a year.
Built and owned the internal design system with 20+ Storybook components, using Zustand for client state, TanStack Query for server cache, and React Hook Form + Zod for schema-validated forms.
Implemented wallet connectivity and authentication using Privy and Viem, supporting wallet login, session handling, and transaction flows across the trading platform.
Built real-time portfolio and trading UIs powered by WebSocket streams for balances, PnL, open positions, and order execution, improving large-dataset rendering and Core Web Vitals on live trading screens.
Used Codex and Claude Code for scaffolding, refactors, and test coverage across the monorepo, with production changes reviewed and 90%+ frontend test coverage maintained via Vitest and React Testing Library.

Coinbase

Software Engineer, Frontend

08/2021 - 03/2025 | San Francisco, CA, USA

Stack: React, TypeScript, GraphQL, OAuth/OIDC, Jest, Vite, Cypress, React Testing Library, Storybook, i18n, Feature Flags, Datadog, Amplitude, Turborepo, Monorepo

Reduced auth friction for 200,000 daily users by implementing accessible (WCAG), responsive, cross-browser sign-in flows with OAuth for Apple, Google, and Ethereum Wallet.
Shipped the App Switcher across Coinbase Help Center, Tracer, and Commerce with i18n and Amplitude analytics, increasing cross-product engagement among retail web users by 0.45%.
Led Unified Signup 2.0, A/B-testing sign-in and sign-up flows for Apple and Google behind feature flags, resulting in a 35% increase in sign-up conversion rate.
Optimized Core Web Vitals in key authentication flows, reducing load times by 20% through targeted rendering and caching improvements.
Drove quality through code review and RFC authoring across a Turborepo monorepo, and contributed to hiring through frontend engineering interviews.

Tech6

Software Engineer

06/2019 - 08/2021 | Brazil

Stack: React, TypeScript, GraphQL, JavaScript, Storybook

Improved performance and user experience for 3,000 users by developing and maintaining a real estate platform using TypeScript, React, and GraphQL.
Achieved UI consistency across 3 platforms by designing and building an internal design system with responsive design and cross-browser support, and supporting a redesign of the main website.
Increased operational efficiency by 30% by implementing an automated invoice generation system for transaction participants.

Todobit

Junior Software Engineer

08/2018 - 06/2019 | Brazil

Skills

Frontend: React, TypeScript, Next.js, JavaScript, Tailwind CSS, Redux, Zustand, TanStack Query, React Hook Form, Zod, Storybook, Vite, Webpack, HTML, CSS

API/Backend: GraphQL, Node.js, REST APIs, WebSockets

Auth/Identity: OAuth, OIDC, Wallet Connectivity

Architecture: Design Systems, Responsive Design, Accessibility (WCAG), Cross-browser Compatibility, SSR/SSG, Caching Strategies, Internationalization (i18n), Feature Flags, RFC Authoring

Quality & Observability: Jest, Vitest, Cypress, React Testing Library, Automated Testing, Code Review, Interviewing/Hiring, Core Web Vitals, Datadog, Amplitude, Analytics & Telemetry

Delivery: CI/CD, GitHub Actions, Vercel, Git, Monorepo, Turborepo, pnpm, Systems Design

AI Tools: Codex, Claude Code, Embeddings, LLM Integration, Prompt Engineering

Web3/Trading: Viem, Privy, Wagmi, DeFi, AMM, CLOB, Perpetuals, Real-time Data UIs

Education

Universidade do Vale do Itajaí

Bachelor's Degree in Computer Science

2017 - 2021 | Brazil

Languages

Portuguese (Native), English (Advanced)