FrontEnd Engineer for Real-Time Trading UIs

Mitchell Kennedy

Senior Frontend Engineer

*****.*******.*****.*@*******.*** 972-***-**** Fort Worth, TX 76132 SUMMARY

Senior Frontend Engineer with 10+ years building real-time, trading-grade UIs and large-scale web platforms. Specializes in React 18, TypeScript, WebSocket-driven data pipelines, Tailwind CSS and Web3 wallet flows (Viem / Ethers.js). Led on-chain transaction signing and wallet connectivity for multi-provider flows, and realized a 35% reduction in market-page latency while transforming charting and order-book rendering with lightweight-charts and klinecharts. Strong in Adaptability/flexibility, creativity, problem solving, Curiosity, Emotional intelligence, Relationship-building and Resourcefulness.

SKILLS

WORK HISTORY

Senior Frontend Engineer (Trading UI)

Avendo LLC Remote 10/2025 - 04/2026

• React 18 (hooks, context, component architecture, performance optimization)

• TypeScript — strict typing, generics, typed API clients, discriminated unions WebSocket client — real-time order books, price tickers, trade feed streaming, throttling & reconciliation

•

Tailwind CSS + PostCSS — utility-first responsive UI, accessibility, custom animations

•

Web3 Frontend — wallet connection (EIP-6963), transaction signing & submission

(Viem, Ethers.js), ABI handling, ERC-20 workflows

•

Charting — lightweight-charts, klinecharts, TradingView integrations; candlestick charts, depth charts, high-frequency updates

•

Routing & State — React Router v6; React Context providers (Config, Wallet, Markets, Favorites, PaperTrade)

•

Monorepo & Tooling — npm workspaces, Hardhat local network for E2E contract validation, CI/CD pipelines, Jest, React Testing Library

•

REST API & Contracts — typed REST clients, OpenAPI, order management, swap quote endpoints, consistent data contracts across stack

•

Performance & Observability — virtualization, memoization, profiling, real-time telemetry, distributed tracing

•

Security & UX — accessible components, wallet UX, secure transaction workflows, fallback flows, defensive UI patterns

•

Soft Skills — Persistence, curiosity, creativity, Emotional intelligence, Relationship- building, sophisticated knowledge and mastery of frontend systems

•

Led frontend architecture for Swap, Limit, Buy, Sell, Trade and Markets pages using React 18 + TypeScript, enforcing component reusability and strict typing across the

•

Senior Frontend Engineer (Realtime / AI UIs)

Supreme Group Remote 06/2023 - 09/2025

Frontend Engineer (Realtime Interfaces)

Athelas Remote 10/2021 - 05/2023

stack

Integrated WebSocket feeds for order books, price tickers and trade feeds; implemented reconciliation and rate-limiting to preserve UI stability under 10k msgs/s

•

Engineered on-chain transaction signing and submission flows for swap and mint operations using Viem, replacing paper-trade placeholders with real execution on testnets and mapping ABIs with smart-contract peers

•

Owned wallet connection UX across 8+ providers with EIP-6963 patterns and RainbowKit adapters; added deterministic fallback paths and secure permission prompts

•

Connected frontend to backend REST APIs for market data, order management and swap quotes; authored typed OpenAPI client and versioned contracts to guarantee consistent data contracts

•

Crafted candlestick and depth charts with lightweight-charts and klinecharts, optimizing draw pipelines to maintain sub-16ms frame times during bursts

•

Worked in an npm workspaces monorepo and coordinated closely with backend and smart-contract teams; used Hardhat local network for deterministic E2E frontend-to- contract validation

•

Realized a 35% reduction in market-page latency by applying memoization, virtualization and selective rendering strategies

•

Architected a real-time chat and market-like interface using React 18, TypeScript and React Router v6, focusing on smooth navigation across trading pages

•

Implemented React Context providers for Config, Wallet, Markets, Favorites and PaperTrade to centralize state and improve predictability for live updates

•

Optimized chart rendering by integrating lightweight-charts and applying virtualization, which realized a 40% reduction in CPU usage per active chart

•

Orchestrated WebSocket client pipelines for live pricing and trade feed streaming with backpressure handling and incremental snapshot reconciliation

•

Hardened responsive UI and accessibility using Tailwind CSS + PostCSS and automated a11y checks to meet WCAG patterns

•

Authored unit and integration suites with Jest and React Testing Library and automated CI workflows to keep release risk minimal

•

Collaborated with backend ML and API teams to align message schemas, typed contracts and throttling strategies for scalable real-time delivery

•

Architected WebSocket and REST contracts for a HIPAA-aware telemedicine platform, coordinating client/server semantics and failure modes

•

Built resilient UI components with lazy-loaded modules and virtualization to support high-concurrency session lists and media panels

•

Optimized initial render and perceived performance via code-splitting, resulting in faster time-to-interactive for market-like dashboards

•

2012

Frontend Engineer (Real-Time Systems)

Tevpro Houston, TX 05/2016 - 09/2021

Frontend Developer (Mobile & Payments)

Improving Dallas, TX 10/2013 - 04/2016

EDUCATION

Bachelor of Science, Computer Science @ Florida Atlantic University Collaborated with security and backend teams to embed JWT flows and RBAC-aware UI states while ensuring safe fallback behavior on auth errors

•

Implemented responsive and accessible layouts using Tailwind CSS, improving form usability and keyboard navigation

•

Augmented monitoring with real-time telemetry and logging to help triage WebSocket disconnect scenarios and session recovery

•

Promoted Resourcefulness and curiosity across cross-discipline teams to debug complex timing, concurrency and network issues

•

Designed frontend/back-end contracts for real-time consultations, coordinating WebSocket flows and REST fallbacks to stabilize media and data under varying network conditions

•

Stabilized adaptive media and rendered components with STUN/TURN tuning and smart buffering strategies to reduce packet loss in live sessions

•

Hardened authentication flows and fine-grained access control to reduce UI surface area for sensitive actions

•

Automated CI/CD pipelines using Jenkins and Git workflows to enable frequent, reliable releases of frontend modules

•

Transformed event-driven integrations to support reliable job processing and smoother user-state transitions during background jobs

•

Cultivated Relationship-building across product, backend and infra teams to unblock cross-stack bottlenecks and align on contract evolution

•

Demonstrated Persistence and creativity solving race conditions and timing issues in production-grade real-time exchanges

•

Built a React Native mobile banking app backed by Node.js/Express and PostgreSQL delivering account and scheduling flows with polished UX

•

Developed backend payment endpoints and client-side flows to support high- throughput transactions with transactional integrity

•

Streamlined CI/CD with AppCenter and automated deployment validations to shorten release windows while preserving reliability

•

Hardened identity and onboarding flows with AWS Cognito and third-party verification to reduce onboarding friction and support compliance

•

Created end-to-end test suites and monitoring to augment production stability for critical financial flows

•

Augmented system reliability by transforming WES microservices into event-driven components backed by RabbitMQ

•

Nurtured sophisticated knowledge of security and compliance patterns relevant to financial frontends

•

Contact this candidate