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I'm a senior front-end software engineer with 13 years of experience delivering high-performance, privacy-focused web applications across healthcare and consulting. I specialize in React and TypeScript, with hands-on Web3 integrations and Ethereum smart contract interactions. I thrive on building real-time, responsive user experiences, collaborating across frontend, backend, and blockchain teams, and delivering secure, production-ready platforms at scale while ensuring accessibility and UX quality.…I'm a senior front-end software engineer with 13 years of experience delivering high-performance, privacy-focused web applications across healthcare and consulting. I specialize in React and TypeScript, with hands-on Web3 integrations and Ethereum smart contract interactions. I thrive on building real-time, responsive user experiences, collaborating across frontend, backend, and blockchain teams, and delivering secure, production-ready platforms at scale while ensuring accessibility and UX quality.

David Walton

Front-End Developer, Back-End Developer, Web Developer, +2

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I'm a senior front-end software engineer with 13 years of experience delivering high-performance, privacy-focused web applications across healthcare and consulting. I specialize in React and TypeScript, with hands-on Web3 integrations and Ethereum smart contract interactions. I thrive on building real-time, responsive user experiences, collaborating across frontend, backend, and blockchain teams, and delivering secure, production-ready platforms at scale while ensuring accessibility and UX quality.…I'm a senior front-end software engineer with 13 years of experience delivering high-performance, privacy-focused web applications across healthcare and consulting. I specialize in React and TypeScript, with hands-on Web3 integrations and Ethereum smart contract interactions. I thrive on building real-time, responsive user experiences, collaborating across frontend, backend, and blockchain teams, and delivering secure, production-ready platforms at scale while ensuring accessibility and UX quality.

Available to hire

I’m a senior front-end software engineer with 13 years of experience delivering high-performance, privacy-focused web applications across healthcare and consulting. I specialize in React and TypeScript, with hands-on Web3 integrations and Ethereum smart contract interactions.

I thrive on building real-time, responsive user experiences, collaborating across frontend, backend, and blockchain teams, and delivering secure, production-ready platforms at scale while ensuring accessibility and UX quality.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Intermediate

Language

English

Fluent

Work Experience

Senior Front End Software Engineer at CVS Health

November 1, 2019 - Present

Architected scalable React and TypeScript interfaces powering authentication workflows for millions of privacy-sensitive healthcare users. Implemented secure authentication and session management, reducing unauthorized access incidents by 38% YoY. Delivered real-time UI updates via event-driven patterns, boosting task completion speed by 27%. Optimized frontend performance with code splitting and memoization, cutting mobile load times by 42%. Integrated complex backend REST APIs into frontend with data synchronization across distributed systems. Led cross-functional collaboration with backend and platform teams to deliver cohesive, end-to-end experiences. Built reusable UI components and shared libraries, accelerating feature delivery across teams by 30%. Strengthened accessibility and error handling, and guided frontend security best practices. Implemented real-time notifications with sub-second latency. Adapted layouts for desktop, tablet, and mobile. Mentored junior engineers and st

Software Engineer at OnyxTec

August 1, 2015 - September 1, 2019

Delivered production-grade React-based applications for multiple clients in high-availability environments. Integrated frontend with RESTful backend services, ensuring reliable data exchange and error resilience. Built real-time dashboards using polling and push updates to visualize live system activity. Improved frontend responsiveness through targeted performance profiling and optimization. Implemented secure login and role-based access controls across client-facing apps. Collaborated with UX designers to translate wireframes into intuitive interfaces. Automated frontend testing workflows, increasing release confidence and reducing regressions. Supported blockchain-adjacent proof-of-concept projects, integrating early Web3 interaction layers. Enhanced cross-browser compatibility and participated in Agile planning to meet tight deadlines. Documented frontend architectures to support long-term maintainability.

Software Developer at Gigster

July 1, 2013 - June 1, 2015

Delivered production-ready frontend code for multiple startups and enterprise clients, building modular components for rapid iteration and scalable UI. Integrated frontend with evolving backend APIs, ensuring reliable data exchange and error resilience. Built real-time dashboards using polling and push updates to visualize live system activity. Improved application responsiveness through targeted performance profiling and optimization. Implemented secure login and role-based access controls across client-facing applications. Collaborated with UX designers to translate wireframes into polished, interactive interfaces. Automated frontend testing workflows, increasing release confidence and reducing regressions. Supported early Web3 interaction layers in blockchain-adjacent PoC projects. Enhanced cross-browser compatibility and contributed to Agile planning to deliver features on schedule.