Senior Full‑Stack Developer (Next.js 15 & React Server Components)

Aiomics; Berlin; Vor Ort; EUR 60.000 - 80.000; Vollzeit

Zusammenfassung

A cutting-edge health technology startup in Berlin is seeking a skilled Next.js Developer to enhance their web platform for clinicians. You will leverage a sophisticated tech stack to optimize performance and facilitate seamless user experiences. This role involves collaboration with design teams, establishing robust testing frameworks, and optimizing caching strategies. Ideal candidates possess deep experience with Vercel and Next.js, ensuring fast and quality deployments. Join a diverse team to make a real impact in patient care.

Leistungen

Early shares participation

Immediate impact on patient care

Access to the latest technologies

Qualifikationen

• Experience architecting production Next.js applications.
• Hands-on with Vercel's platform for optimization.
• Implementing and maintaining design systems in collaboration with designers.

Aufgaben

• Ship a performant web platform for users.
• Translate designs into scalable themes using Tailwind CSS.
• Establish E2E testing strategy and optimize build performance.

Kenntnisse

Architecting Next.js applications

Experience with Vercel platform

Next.js Middleware usage

Understanding of caching strategies

Building automated testing suites

Monorepo tooling expertise

Tools

Next.js

Vercel

Tailwind CSS

Playwright

Cypress

Turborepo

Jobbeschreibung

The challenge you’ll own

Ship a world‑class, performant, and intuitive web platform for patients and practitioners, leveraging a cutting‑edge stack to deliver a seamless user experience, even on constrained networks.

Translate Figma designs and Vercel v0 prototypes into polished, production-ready components. Architect a sophisticated rendering strategy, choosing the right tool for each view: SSG for static content, ISR for dashboards, SSR for session-aware pages, and PPR for dynamic-static composites. Own our Next.js Middleware for authentication, routing, and feature flagging. Implement fine-grained caching strategies across the stack, from the client (Tanstack Query) to the server (Data Cache) and the edge (Full Route Cache). Master Vercel’s platform, optimizing build outputs, managing environment variables, configuring caching headers, and deploying to Edge Functions where it provides a clear performance win.

Collaborate directly with our new designer to translate brand guidelines and design tokens into a scalable theme within our Tailwind CSS configuration. Establish our E2E testing strategy from the ground up, writing robust tests and integrating them into the Vercel CI/CD pipeline. Optimize our Turborepo monorepo, managing shared packages and improving build performance across the board.

What success looks like (outcomes only)

By month 3

• The new brand guidelines and design tokens from our incoming designer are fully implemented across the platform, likely via an extended Tailwind CSS configuration, resulting in a polished and consistent UI.
• A robust end-to-end (E2E) testing suite (e.g., using Playwright or Cypress) is established from scratch, providing reliable test coverage for all critical patient and practitioner workflows.
• The E2E test suite automatically runs against every Vercel Preview Deployment, blocking merges on failure and providing a high-confidence quality gate before shipping to production.
• Our Turborepo monorepo is optimized, with clear package boundaries, efficient build caching, and a streamlined process for sharing components and utilities.

By month 6

• Test coverage is expanded beyond E2E to include unit and integration tests for key business logic and components, leading to a measurable decrease in regressions.
• p95 initial load is under 1.5 seconds, achieved through a strategic mix of rendering modes like Partial Prerendering (PPR) and Incremental Static Regeneration (ISR).
• Data-heavy practitioner dashboards feel instantaneous due to a sophisticated caching strategy that balances data freshness and performance (e.g., revalidateTag, Data Cache).

What you’ll bring

• You have architected and scaled production Next.js applications, making expert trade-off decisions between different rendering modes (SSR, SSG, ISR, PPR) to optimize for performance, cost, and UX.
• You possess deep, hands-on experience with the Vercel platform beyond vercel deploy, including optimizing its build pipeline, managing complex environments, and troubleshooting serverless function behavior.
• You have used Next.js Middleware for more than just authentication, such as for localization, A/B testing, or advanced routing logic.
• You have a nuanced understanding of caching in the Next.js ecosystem, from client-side state to server-side data revalidation and Vercel's edge network.
• You have hands-on experience building and maintaining automated testing suites, especially E2E testing with frameworks like Playwright or Cypress in a CI/CD environment.
• You are proficient with monorepo tooling (preferably Turborepo) and understand the principles of building scalable frontend architectures with shared packages.
• You have experience working closely with designers to implement and maintain design systems.

What makes this a great opportunity

• Upside participation: Opportunity to receive early shares in a venture-funded AI start-up with the ambition to grow very big.
• Immediate, real‑world impact: You’ll see your work used by clinicians within weeks, not years, directly influencing patient care.
• A cutting-edge stack: Go deep on the latest technologies—Next.js 15, React 19, Server Components—and build a greenfield product the right way.
• Build it right, then fast: We obsess over taste and whole‑journey quality, and we keep our hands in the medium—clickable prototypes, ship small, review carefully.
• Diverse and seasoned team: You’ll work directly with a physician‑CEO (deep user‑research mindset), a lawyer‑COO (operations and hospitality rigor), and a CTO with a decade in full‑stack data science.