Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

I am a Senior Frontend Engineer with 8+ years of experience building accessible, high-performance web applications using React, TypeScript, and modern frontend tooling. I design for responsive, mobile-first experiences and champion WCAG compliance to ensure inclusive product experiences.\n\nI thrive in cross-functional teams, collaborating with product managers, designers, and backend engineers to translate user needs into scalable frontend architectures. I enjoy leading code reviews, mentoring junior developers, and helping teams ship high-quality features with a focus on performance and maintainability.…I am a Senior Frontend Engineer with 8+ years of experience building accessible, high-performance web applications using React, TypeScript, and modern frontend tooling. I design for responsive, mobile-first experiences and champion WCAG compliance to ensure inclusive product experiences.\n\nI thrive in cross-functional teams, collaborating with product managers, designers, and backend engineers to translate user needs into scalable frontend architectures. I enjoy leading code reviews, mentoring junior developers, and helping teams ship high-quality features with a focus on performance and maintainability.

Joshua Wallen

Front-End Developer, Full Stack Developer, Web Developer, +3





I am a Senior Frontend Engineer with 8+ years of experience building accessible, high-performance web applications using React, TypeScript, and modern frontend tooling. I design for responsive, mobile-first experiences and champion WCAG compliance to ensure inclusive product experiences.\n\nI thrive in cross-functional teams, collaborating with product managers, designers, and backend engineers to translate user needs into scalable frontend architectures. I enjoy leading code reviews, mentoring junior developers, and helping teams ship high-quality features with a focus on performance and maintainability.…I am a Senior Frontend Engineer with 8+ years of experience building accessible, high-performance web applications using React, TypeScript, and modern frontend tooling. I design for responsive, mobile-first experiences and champion WCAG compliance to ensure inclusive product experiences.\n\nI thrive in cross-functional teams, collaborating with product managers, designers, and backend engineers to translate user needs into scalable frontend architectures. I enjoy leading code reviews, mentoring junior developers, and helping teams ship high-quality features with a focus on performance and maintainability.

Available to hire

I am a Senior Frontend Engineer with 8+ years of experience building accessible, high-performance web applications using React, TypeScript, and modern frontend tooling. I design for responsive, mobile-first experiences and champion WCAG compliance to ensure inclusive product experiences.\n\nI thrive in cross-functional teams, collaborating with product managers, designers, and backend engineers to translate user needs into scalable frontend architectures. I enjoy leading code reviews, mentoring junior developers, and helping teams ship high-quality features with a focus on performance and maintainability.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Language

English

Fluent

Work Experience

Senior Full Stack Engineer at Bynaus

June 1, 2023 - Present

Develop responsive, accessible web applications for HealthConnect patient portal using React, TypeScript, and HTML/CSS serving 50K+ daily users. Implement mobile-first development patterns and WCAG 2.1 AA accessibility. Build server-side rendering solutions with Node.js and Next.js improving initial page load and SEO. Lead web performance optimization with code splitting, lazy loading, and Core Web Vitals monitoring. Write comprehensive unit tests with Jest and automated testing with Cypress maintaining 85%+ code coverage. Collaborate with product managers, designers, and backend engineers to translate user needs into technical specifications. Participate in code reviews and pair programming, mentoring junior developers on React best practices and frontend architecture.

Senior Software Engineer at CohesionLabs LLC

September 1, 2020 - March 1, 2023

Built responsive e-commerce frontend for ShopFlow marketplace using React, TypeScript, and JavaScript with Redux state management. Implemented web accessibility standards and responsive design patterns increasing mobile conversion rates by 25%. Integrated frontend components with backend APIs and services using RESTful APIs and GraphQL. Developed automated testing suites with Jest and Selenium reducing production bugs by 35%. Used Node.js to build frontend tooling and server-side rendering for improved scalability and performance. Collaborated with cross-functional teams in Agile environment delivering features aligned with business goals.

Full Stack Engineer at Blockchain Space

May 1, 2017 - August 1, 2020

Developed responsive trading dashboard using React, JavaScript, and CSS with real-time data visualization. Built mobile-first interfaces with HTML5 and CSS3 ensuring consistent experience across devices. Implemented unit testing with Jest and React Testing Library for frontend components. Integrated frontend with RESTful APIs and Node.js backend services for portfolio management features. Optimized web performance reducing page load times from 3s to under 1s through code optimization. Collaborated with designers and product managers to deliver user-centered trading experiences.

Full Stack Developer at T-Mobile

June 1, 2014 - April 1, 2017

Built responsive customer portal interfaces using JavaScript, HTML, and CSS frameworks. Developed frontend components integrated with backend services using RESTful APIs. Implemented version control workflows with Git and deployed using CI/CD pipelines. Maintained code documentation and contributed to team knowledge base. Worked in Agile environment collaborating with cross-functional teams on feature delivery.