# Shuhao Ruan

> Senior Full Stack Engineer @ HelloFresh / Ex-Fullstack Developer @ Datavant

Location: United States, United States
Profile: https://flows.cv/shuhao

Frontend Developer with over 5 years of experience in designing, developing, and deploying high-performance web applications. Proficient in creating dynamic user interfaces, managing state with Redux, and building comprehensive component libraries. Skilled in both frontend and backend integration, with a strong background in Agile methodologies and a commitment to delivering scalable and maintainable code.
●5+ years of professional experience as a Frontend Engineer, specializing in developing scalable web applications and enterprise solutions across e-commerce and healthcare platforms.
●Proficient in JavaScript, TypeScript, React.js, Next.js and modern UI libraries for building responsive, high-performance and accessible user interfaces.
●Skilled in integrating GraphQL with Apollo Client for efficient data fetching and managing state with Redux Toolkit
and React Hooks.
●Experienced in building and maintaining reusable UI component libraries using Storybook, promoting rapid development and consistent design systems.
●Improved frontend performance through code-splitting, lazy loading and image optimization, resulting in faster load times and enhanced user engagement.
●Collaborated on backend API development using Node.js and Express.js and Python Flask to deliver secure, full-stack solutions.
●Hands-on deployment experience with AWS EC2, S3, Amplify and ECS and building CI/CD pipelines using GitHub Actions for automated zero-downtime deployments.
●Advocates for Test-Driven Development with expertise in Cypress, Jest and React Testing Library to ensure code quality and stability.
●Familiar with Agile methodologies, actively participating in sprint planning, code reviews and cross-functional collaboration using Jira and Confluence.
●Committed to delivering high-impact business-driven solutions with a focus on improving user experience and driving product innovation.

## Work Experience
### Senior Frontend Engineer @ Walmart
Jan 2025 – Jan 2026

### Senior Software Development Engineer @ HelloFresh
Jan 2023 – Jan 2025 | New York, New York, United States
Project Description
At HelloFresh, I led initiatives to modernize the customer meal selection experience on both desktop and mobile browsers. The project focused on delivering high performance, accessibility, and personalization. I worked with cross-functional teams to implement a modular frontend architecture, streamline API consumption, and improve key business metrics such as user engagement, retention, and cart conversion rates.

Responsibilities
●Developed and maintained dynamic frontend features using React.js, TypeScript, and Tailwind CSS, including customizable menus, allergy filters, and delivery preference selectors.
●Leveraged GraphQL and Apollo Client for efficient data fetching and caching, improving page responsiveness and reducing backend load.
●Migrated legacy codebases to modern Next.js architecture with server-side rendering and static site generation, enhancing SEO and load performance.
●Collaborated with UX/UI designers to implement responsive layouts, focusing on mobile-first design and accessibility compliance
●Integrated Stripe and PayPal SDKs for secure, flexible checkout options with real-time pricing and promo adjustments.
●Utilized Cypress and Jest for comprehensive testing coverage, including end-to-end and integration tests across subscription flows.
●Built reusable design components documented in Storybook to promote consistency and enable rapid A/B test rollouts.
●Participated in Agile ceremonies, code reviews, and design critiques using Jira, GitHub, and Figma.
●Worked with DevOps to improve CI/CD pipelines using GitHub Actions and AWS Amplify for rapid, zero-downtime deployment.
●Led cross-functional initiatives to reduce page load time by 35%, resulting in improved conversion rates.
●Mentored junior engineers in best practices for Next.js architecture and component design.
●Partnered with analytics team to implement event tracking and measure user engagement impact post-release.

### Software Engineer @ Blue Apron
Jan 2022 – Jan 2023 | New York, New York, United States
Project Description
At Blue Apron, I worked on the revamp of the e-commerce meal subscription platform, focusing on improving customer interaction with weekly menus, recipe customization, and checkout workflows. The initiative aimed to increase user retention and conversion by delivering a smoother, more personalized experience on both web and mobile browsers. I collaborated closely with designers, product managers, and backend engineers to launch modular, accessible UI features that scaled across multiple product offerings.

Responsibilities
●Rebuilt key parts of the user dashboard and checkout experience using React.js and Next.js, focusing on performance and accessibility for both desktop and mobile devices.
●Designed and implemented responsive components with Styled Components and Tailwind CSS, including the menu selector, ingredient swapper, and delivery calendar.
●Integrated GraphQL APIs using Apollo Client to fetch personalized meal data, dietary preferences, and dynamic pricing, significantly reducing over-fetching and response time.
●Used React Hook Form and Yup for form validation and state management in checkout and payment screens, improving form reliability and user feedback.
●Enhanced frontend performance with code-splitting, lazy loading, and image optimization strategies, decreasing initial load time by over 30%.
●Led accessibility improvements across the site by implementing WCAG 2.1 guidelines, including keyboard navigation, ARIA roles, and screen reader compatibility.
●Created reusable UI modules documented in Storybook, allowing for cross-team collaboration and rapid feature iteration.
●Worked with QA to automate Cypress end-to-end tests and maintain a robust test suite with Jest and React Testing Library for unit and integration coverage.
●Contributed to build pipeline optimization using Webpack custom loaders and analyzed bundle size with Source Map Explorer to eliminate dead code.

### Full Stack Developer @ Datavant
Jan 2020 – Jan 2022 | New York, New York, United States
Project Description
At Datavant, I contributed to the development of a healthcare data connectivity platform that helps organizations securely exchange patient-level data. The platform allowed hospitals, insurers, and research institutions to tokenize, match, and link healthcare records without compromising patient privacy. I was responsible for implementing secure and scalable features across both frontend and backend, playing a central role in architecting user-facing dashboards, API integrations, and performance enhancements.
Responsibilities
●Designed and developed complex user dashboards using React.js, TypeScript, and Ant Design, visualizing data linkage stats, tokenization accuracy, and patient matching reports.
●Implemented reusable React Hooks and utility components to standardize frontend logic across the application.
●Integrated Redux Toolkit for global state management across workflows including data imports, API responses, and user authentication.
●Built secure backend APIs using Node.js and Express, enabling role-based access, audit logging, and bulk dataset processing.
●Developed data tokenization microservices in Python Flask, which utilized salted hashing and encryption algorithms to pseudonymised sensitive health data.
●Orchestrated complex data workflows and asynchronous background jobs with Celery and Redis, managing long-running operations like data validation and export.
●Stored structured metadata in PostgreSQL and used AWS S3 for encrypted blob storage of healthcare datasets, ensuring secure access through signed URLs.
●Monitored application performance and uptime using Datadog and Sentry, and implemented alerting rules for API latency and tokenization failures.
●Collaborated with product managers and healthcare compliance officers to ensure features met HIPAA and HITECH regulations.
●Automated builds, testing, and deployment pipelines using GitHub Actions, with multi-environment deployments to AWS ECS.


## Education
### Bachelor's degree in Computer Science, 
New York University
Jan 2015 – Jan 2018

### Master's degree in Computer Science
New York University
Jan 2018 – Jan 2020


## Contact & Social
- LinkedIn: https://linkedin.com/in/shuhao-ruan

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Source: https://flows.cv/shuhao
JSON Resume: https://flows.cv/shuhao/resume.json
Last updated: 2026-03-22