Software Engineer, Microfrontends

Vercel

Location: Germany, Netherlands, United Kingdom
Job Type: full-time
Salary: Unknown
Posted: August 16, 2025

Job Description

About Vercel:

Vercel gives developers the tools and cloud infrastructure to build, scale, and secure a faster, more personalized web. As the team behind v0, Next.js, and AI SDK, Vercel helps customers like Ramp, Supreme, PayPal, and Under Armour build for the AI-native web.

Our mission is to enable the world to ship the best products. That starts with creating a place where everyone can do their best work. Whether you're building on our platform, supporting our customers, or shaping our story: You can just ship things

About the role:

We are looking for a Software Engineer to join our Microfrontends team. In this role, you will create solutions to break apart large applications into smaller ones that function cohesively as a whole. The role will work with multiple frameworks and solve challenges with how code from different applications interact with each other, solving problems such as CSS isolation, sharing data, and performance optimizations. You will play a critical role to improve developer velocity for organizations and make it easier to incrementally migrate to new technologies.

If you’re based within a pre-determined commuting distance of one of our offices (SF, NY, London, or Berlin), the role includes in-office anchor days on Monday, Tuesday, and Friday. If you're located beyond that distance, the role is fully remote. For location-specific details, please connect with our recruiting team.

What you will do:

Improve the developer velocity of web applications by providing solutions to split web applications.
Simplify incremental migrations to update to new technology stack by using microfrontends.
Work in multiple codebases including Next.js, API services, and the CDN.
Engage with customers and the open source community on features and issues.
Stay abreast of industry trends in microfrontends.

About you:

You have at least 5+ years working with web applications including React, React Server Components, and Next.js.
You have strong proficiency in JavaScript/TypeScript and experience with modern frontend development tools.
You enjoy working as a full stack engineer on multiple parts of the stack.
You have worked with microfrontends before, such as Module Federation, Single SPA, or Multi-Zones.

Bonus if you:

Have experience contributing to, or participating in open source projects.
Have worked in an organization that has had to scale to a large number of developers and/or performed large scale web application migration.
Have worked to develop a CI/CD platform for other developers to use.

Benefits:

Competitive compensation package, including equity.
Inclusive Healthcare Package.
Learn and Grow - we provide mentorship and send you to events that help you build your network and skills.
Flexible Time Off.
We will provide you the gear you need to do your role, and a WFH budget for you to outfit your space as needed.

Vercel is committed to fostering and empowering an inclusive community within our organization. We do not discriminate on the basis of race, religion, color, gender expression or identity, sexual orientation, national origin, citizenship, age, marital status, veteran status, disability status, or any other characteristic protected by law. Vercel encourages everyone to apply for our available positions, even if they don't necessarily check every box on the job description.

🎯 Who is this job for?

This role is best suited for a Senior Software Engineer with 5+ years of experience in building web applications using React, Next.js, JavaScript/TypeScript. The candidate should be skilled in microfrontends (Module Federation, Single SPA, Multi-Zones) and comfortable working across the full stack, including APIs and CDNs. It’s ideal for someone who has tackled large-scale migrations, performance optimizations, and enjoys contributing to open source and developer tooling.

💬 Potential Interview Questions

What are microfrontends and why are they beneficial in large-scale applications?
Microfrontends break down a frontend monolith into smaller, independently deployable pieces. This improves scalability, enables team autonomy, and simplifies incremental tech migrations.
Can you explain how Module Federation works in Webpack?
Module Federation allows multiple Webpack builds to dynamically share code at runtime, enabling microfrontends to load remote components without bundling them locally.
How would you ensure CSS isolation between microfrontends?
Use CSS Modules, Shadow DOM, or CSS-in-JS libraries like styled-components to scope styles and prevent leakage between microfrontends.
How do you manage shared state between microfrontends?
Shared state can be managed using global state management solutions (e.g., Redux with a shared store), custom events, or shared context via remote components.
What are the main performance concerns with microfrontends and how can they be addressed?
Concerns include increased JavaScript payload, redundant libraries, and network latency. These can be mitigated with shared dependencies, lazy loading, and caching strategies.
What are the trade-offs between using Single SPA and Module Federation for microfrontends?
Single SPA provides strong app orchestration but can add runtime overhead, while Module Federation offers better performance and simplicity at the cost of reduced isolation.
How would you approach migrating a monolithic Next.js app to a microfrontend architecture?
Identify clear domain boundaries, extract features into standalone apps using Module Federation or subdomains, and incrementally migrate routes.
What strategies do you use to ensure a seamless user experience across microfrontends?
Maintain a consistent design system, synchronize navigation and routing, and manage shared states and loading transitions efficiently.
How do React Server Components fit into a microfrontend architecture?
They allow for server-side rendering of isolated UI components, improving performance and enabling integration of microfrontends with minimal client-side overhead.
Describe a CI/CD strategy for managing multiple microfrontend apps.
Use independent pipelines per app, version control with semantic releases, automated tests, and a central orchestrator to deploy and validate changes in a staging environment.

📋 Job Summary

Vercel, the team behind Next.js and v0, is hiring a Software Engineer for their Microfrontends team to build scalable, modular web solutions used by leading companies like PayPal and Under Armour. You'll work with React, Next.js, and modern tooling to solve complex challenges like CSS isolation, performance optimization, and incremental migrations. This is a full-time remote role (UK, Germany, Netherlands), with optional office days in Berlin or London. The stack includes JavaScript/TypeScript, React Server Components, and CDN/API services. Join Vercel to shape the future of the AI-native web while enjoying top-tier compensation, equity, and a flexible remote setup.