Frontend Engineer (Next.js & React, AI-Native) – Remote

LumiMeds

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Location: LATAM
Job Type: full-time
Work Format: 🌍 Remote LATAM
Salary: Not specified
Posted: October 13, 2026

Job Description

About LumiMeds

LumiMeds is a fast-growing U.S.-based telehealth startup focused on weight management and long-term metabolic health. We are building the next generation of e-commerce and clinical infrastructure from the ground up.

As an early-stage company, we move quickly, operate with limited layers, and expect high ownership from every team member. There is no bureaucracy here — decisions happen fast, priorities evolve, and builders thrive.

We are a remote-first, globally distributed team that values clarity, accountability, and people who take initiative rather than wait for direction.

Frontend Engineer (Next.js & React, AI-Native) – Remote

LATAM / South America

About LumiMeds

As an early-stage company, we move quickly, operate with limited layers, and expect high ownership from every team member. There is no bureaucracy here—decisions happen fast, priorities evolve, and builders thrive.

We are a remote-first, globally distributed team that values clarity, accountability, and people who take initiative rather than wait for direction.

Platform & Product Engineering — LumiMeds

Location: Remote
Seniority: Frontend Engineer (Mid-Level / Individual Contributor)

Role Overview

LumiMeds is building the next generation of virtual healthcare infrastructure, and we're looking for an AI-First Frontend Engineer who enjoys creating beautiful, fast, and reliable user experiences using modern frontend technologies.

You'll work across our consumer storefronts and internal clinical platform, translating product designs into polished interfaces while leveraging AI development tools to increase productivity and code quality.

This role is ideal for someone with solid frontend fundamentals who enjoys learning, takes ownership of their work, and thrives in a fast-moving startup environment. You'll collaborate closely with product, design, backend engineers, and senior frontend engineers to deliver exceptional user experiences.

What You'll Build

You'll contribute across multiple areas of our platform, including:

Marketing & E-commerce

Responsive landing pages
High-performing storefront experiences
SEO-friendly Next.js applications
Core Web Vitals optimization

Clinical Platform

Provider dashboards
Patient portals
Complex forms and workflows
Secure healthcare interfaces

AI-Powered Experiences

Chat interfaces
Streaming AI responses
AI-assisted clinical workflows
Conversational UI components

Design System

Shared component library
Reusable UI patterns
Responsive layouts
Accessible interfaces and animations

Key Responsibilities

Frontend Development

Build responsive applications using Next.js, React, and TypeScript.
Translate Figma designs into clean, reusable, and pixel-accurate components.
Deliver production-ready features with strong attention to quality and usability.

AI-Augmented Development

Use AI tools such as Cursor, GitHub Copilot, or similar to accelerate development.
Leverage LLMs to generate boilerplate, improve code quality, write tests, and speed up iteration.
Continuously improve your AI-assisted engineering workflow.

UI & Performance

Build fast, responsive interfaces optimized for Core Web Vitals.
Improve page performance, bundle size, and loading experience.
Ensure consistent experiences across browsers and devices.

State & Data Management

Build maintainable client-side state using modern React patterns.
Integrate frontend applications with REST APIs and real-time services.
Create reliable user experiences for complex forms and asynchronous workflows.

Quality & Collaboration

Write maintainable, testable code.
Participate in code reviews and technical discussions.
Collaborate closely with product managers, designers, backend engineers, and QA.
Continuously improve frontend architecture and engineering practices.

Security & Compliance

Follow secure development practices.
Help build interfaces that meet HIPAA and SOC2 requirements.
Ensure proper handling of sensitive patient information.

Required Technical Skills

Frontend

2–4 years of professional frontend development experience.
Strong experience with React and Next.js.
Good understanding of TypeScript.
Solid knowledge of HTML5, CSS3, and modern JavaScript (ES6+).

UI Development

Experience with Tailwind CSS.
Ability to build responsive, accessible interfaces.
Experience implementing designs from Figma.

State Management

Experience with one or more modern state management libraries, such as:

TanStack Query
Zustand
Redux Toolkit

Performance

Understanding of:

Core Web Vitals
Lazy loading
Image optimization
Rendering fundamentals
Basic caching strategies

AI Development Tools

Regular experience using tools such as:

Cursor
GitHub Copilot
Claude
ChatGPT

You should be comfortable using AI to improve productivity while maintaining high engineering standards.

Bonus Experience

Nice to have:

Framer Motion
AI-powered UI features (chat, streaming responses)
OpenAI or Anthropic APIs
WebRTC
Healthcare or HIPAA-regulated applications

How to Apply

If this role sounds like a fit, we’d love to hear from you. Please submit your application in English and ensure your resume reflects relevant experience for the role.

This position is open to candidates based in approved locations, depending on the role and business needs. Qualified applicants will be contacted for next steps.

LumiMeds is an equal opportunity employer. We hire based on skills, experience, and alignment with our values.

Please note: This role requires professional-level English communication and availability to work U.S. business hours.

🎯 Who is this job for?

This role is suitable for a Middle-level Frontend Engineer with 2–4 years of professional experience building production applications with React, Next.js, TypeScript, JavaScript, HTML, CSS, and Tailwind CSS.

The candidate should be skilled in responsive and accessible UI development, Figma implementation, state and data management, REST and real-time API integration, performance optimization, testing, and secure handling of sensitive data, with practical experience using AI coding tools.

They should be familiar with creating e-commerce pages, dashboards, portals, complex forms, conversational interfaces, reusable design-system components, Core Web Vitals improvements, and asynchronous workflows in a fast-paced, collaborative startup environment.

💬 Potential Interview Questions

1. How would you structure a Next.js application that serves both a high-performing e-commerce storefront and authenticated clinical dashboards?

I would separate public and authenticated areas through clear route groups, shared layouts, and reusable domain components. I would use server rendering or static generation for SEO-sensitive storefront pages, while using protected routes and client-side data fetching for interactive clinical workflows.

2. When would you use Server Components, Client Components, SSR, SSG, or ISR in Next.js?

I would prefer Server Components and static generation for content that does not require browser interactivity, such as marketing pages. I would use Client Components for forms, chat, animations, and interactive dashboards, with SSR or ISR when data must be fresh but still benefit from server-rendered performance.

3. How would you optimize Core Web Vitals for a Next.js storefront?

I would optimize images and fonts, minimize JavaScript sent to the browser, lazy-load noncritical content, and avoid layout shifts by reserving space for dynamic elements. I would monitor LCP, CLS, and INP using Lighthouse, field data, and performance monitoring tools.

4. How would you manage server state and client state in a complex React application?

I would use TanStack Query for server state, including caching, retries, mutations, and synchronization with REST APIs. I would use Zustand or Redux Toolkit for client-only state such as UI preferences, modal state, or multi-step workflow state, avoiding unnecessary duplication of server data.

5. How would you build a reliable multi-step healthcare form with asynchronous validation?

I would use a form library with a schema validator such as Zod, validate fields both locally and on the server, and persist progress carefully when appropriate. The UI should clearly represent loading, error, success, and retry states while preventing duplicate submissions and preserving user-entered data.

6. How would you implement a streaming AI chat interface in React?

I would consume a streaming response using the Fetch API, readable streams, or a suitable AI SDK, progressively updating the assistant message as tokens arrive. I would also handle cancellation, connection failures, partial responses, loading states, and safe rendering of returned content.

7. What security practices are important when building interfaces that handle protected health information?

I would avoid storing sensitive data in local storage or exposing it in URLs and client logs, enforce secure authentication and authorization, and use HTTPS with appropriate session controls. I would also minimize data displayed in the UI, prevent XSS, validate inputs, and follow HIPAA and SOC2 policies for auditing and access control.

8. How do you translate a Figma design into a reusable and accessible component system?

I identify repeated patterns, define component APIs and design tokens, and implement responsive behavior rather than hard-coding individual screens. I also ensure semantic HTML, keyboard navigation, visible focus states, sufficient contrast, and appropriate ARIA usage through automated and manual accessibility testing.

9. How would you test a React and Next.js feature before releasing it?

I would unit-test utilities and component behavior, use integration tests for forms and API interactions, and add end-to-end tests for critical flows such as sign-up, checkout, or patient intake. I would also verify accessibility, responsive layouts, error states, performance, and behavior across supported browsers.

10. How do you use AI coding tools such as Cursor, GitHub Copilot, or Claude without reducing code quality?

I use AI tools for scaffolding, refactoring suggestions, test generation, and documentation, but I review every generated change for correctness, security, accessibility, and maintainability. I provide focused context, run tests and linters, inspect dependencies and data handling, and never treat generated code as a substitute for engineering judgment.

📋 Job Summary

LumiMeds is a fast-growing U.S.-based telehealth startup building modern e-commerce and clinical infrastructure for weight management and metabolic health. As a remote Frontend Engineer for LATAM/South America, you’ll develop responsive storefronts, patient portals, provider dashboards, complex workflows, and AI-powered interfaces using Next.js, React, TypeScript, Tailwind CSS, and modern state-management tools. This fully remote role requires professional English and U.S. business-hours availability; salary details were not disclosed. It’s an excellent opportunity to join an ownership-driven early-stage team, work with AI-native development practices, and build impactful healthcare products from the ground up.