1 – What you must require from a Next.js developer in 2025
Next.js is no longer a simple React framework with SSR. Since version 13, the architecture has changed profoundly. A developer who knows React doesn't necessarily know Next.js. Here are the non-negotiable skills.
1.1: App Router, Server Components and the new mental model
The App Router introduced since Next.js 13 breaks the habits of developers used to the Pages Router. Server Components become the default. That means the developer must understand when a component runs server-side, when it switches client-side with "use client", and above all why. A profile that puts "use client" at the top of every file because they don't understand the distinction is a classic React profile, not a Next.js developer. At Taram, the technical test starts there. The candidate receives an exercise that mixes Server Components and Client Components on the same page. They must justify every choice. If they can't explain streaming with Suspense, passing server data to a client component without manual serialization, or how nested layouts work, they don't pass. This isn't theory: it's what separates a performant build from a build that re-renders the entire page on every navigation.
1.2: SSR, SSG, ISR: knowing how to choose the right rendering strategy
Next.js offers several rendering strategies and most projects use several simultaneously. A dedicated Next.js developer must know when to generate a page at build time (SSG), when to render it on demand (SSR), and when to use incremental revalidation (ISR). A product catalog with thousands of pages is not managed the same way as an internal dashboard. The choice impacts load time, hosting costs, and SEO indexing. The classic trap: putting everything in SSR "to be safe". The result: Time to First Byte climbs, the server absorbs unnecessary requests, and Vercel or AWS costs explode. Your developer must make trade-offs, not apply a single recipe. In our technical tests, we present a concrete scenario: an e-commerce site with product pages, category pages, and a customer area. The candidate must propose a page-by-page rendering strategy and justify each decision. That's where senior profiles distinguish themselves from profiles who followed a tutorial.
1.3: API Routes, Server Actions and the data layer
Next.js is absorbing more and more back-end responsibilities. API Routes allow creating endpoints without a separate server. Server Actions, introduced with Next.js 14, allow executing server-side mutations directly from a form or a component. A Next.js developer who only masters the front-end doesn't cover your needs. They must know how to connect Prisma or Drizzle to a PostgreSQL database, manage authentication with NextAuth (now Auth.js), validate data with Zod server-side, and structure the cache with revalidation tags. If your stack includes an existing Node.js back-end, the developer must also know how to interface Next.js with your APIs without creating a unnecessary proxy layer. It's a hybrid profile, at the boundary of front-end and back-end. Exactly the type of profile that Taram recruits and tests: not a "React developer doing Next", but a Next.js developer who understands the complete ecosystem. If you're looking for a complementary profile on the API layer, check out our article on the développeur Node.js à distance.
2 – How Taram tests and recruits a dedicated Next.js developer
You will never see a CV before we have validated the profile ourselves. The Taram recruitment process filters upstream so that every candidate presented is ready to code in your codebase, not just "talk tech" in an interview.
2.1: Written technical test on App Router, cache and performance
The first filter is an asynchronous technical test of two to three hours. The candidate receives a realistic brief: a Next.js application with App Router, a database, public pages and protected pages. They must implement a complete feature, from the data model to the rendering. We evaluate the file structure (compliance with app/ conventions), the correct use of Server and Client Components, cache management (revalidatePath, revalidateTag), error handling (error.tsx, not-found.tsx) and TypeScript code quality. Strict typing is not optional. If the candidate uses "any" as an escape hatch, it's eliminatory. To go deeper on this point, our article on développeur TypeScript à distance details the typing criteria we enforce. Every submission is reviewed by a lead developer from the Taram team before any presentation to the client.
2.2: Live coding in front of the client on a concrete Next.js case
The written test eliminates weak profiles. Live coding reveals solid profiles. We organize a 45-minute to one-hour session, by video call, with you. The candidate shares their screen and codes live on an exercise calibrated to your stack. If you use Next.js with Prisma and PostgreSQL, the exercise covers that. If your project uses the Pages Router and you're planning a migration to the App Router, the exercise simulates that migration. You see how the developer thinks, how they search the documentation, how they handle an unexpected error. No PowerPoint presentation, no pitch: code, decisions, communication. You ask your questions live. If something concerns you (English level, mastery of a specific tool, ability to work independently), this is the moment to verify it. No candidate joins your team without this step. It's your developer: you validate.
2.3: Integration into your tools from day one
A developer who takes three weeks to understand your Git, your CI/CD and your code conventions costs you three weeks of productivity. At Taram, technical integration begins before the first sprint. We provide the developer with a Ryzen 7 machine with fiber plus a 5G backup connection. They join your Git repository, your Jira or Linear board, your Slack or Teams channel. Access is configured according to your security rules. If you have naming conventions, a configured linter, specific deployment pipelines, the developer assimilates them during the first week. Their first commit arrives within the first five days. To structure this phase, notre guide sur le management d'un développeur à distance details the rituals that accelerate onboarding without micro-management. The goal: after two weeks, the difference between your Taram Next.js developer and a remote employee is invisible.
3 – Concrete cases where a dedicated Next.js developer changes your ability to deliver
Next.js covers a broad spectrum. Your need doesn't look like your neighbor's. Here are the three most common scenarios among our clients, and what a dedicated developer brings to each.
3.1: Migration of a React application (CRA or Vite) to Next.js
Your React application works, but SEO is non-existent, routing is a patchwork of libraries, and every page loads the entire JavaScript bundle. You know you need to migrate to Next.js, but nobody on your current team has the time or expertise to lead this transition without breaking production. A dedicated Next.js developer takes charge of the migration page by page. They start with the critical pages (landing pages, product pages, conversion pages), move them to App Router with the right rendering mode, then advance incrementally without blocking other developers. The migration doesn't happen as a big bang. It happens in parallel with feature delivery. This is exactly the type of mission that requires a full-time developer, integrated into your codebase, not a freelancer spending ten hours a week between two other projects. If your roadmap is accumulating delays, the situation will only get worse: voici comment rattraper.
3.2: Development of a SaaS product on Next.js from scratch
You're launching a product. You've validated the market, the mockups are ready, and you need a developer capable of laying the technical foundations without taking six months. Next.js with App Router, strict TypeScript, Prisma, a PostgreSQL database on Supabase or Neon, authentication with Auth.js, deployment on Vercel: this stack covers the majority of needs for a B2B SaaS in launch phase. A dedicated Taram Next.js developer takes this stack in hand. They structure the project, establish conventions, implement the first features and deliver every week. You keep product control, they execute the technical side. If your project grows, you add a second developer. The first onboards the second because they know the code, the architecture choices, the technical trade-offs. That's the advantage of a full-time dedicated developer compared to a service provider who starts from scratch with every project. Code continuity is what makes the difference: notre article l'explique en détail.
3.3: Reinforcing an existing team on a Next.js project in production
Your product runs on Next.js. You have one or two developers in-house, but the workload exceeds their capacity. Tickets are piling up, production bugs come after features, and technical debt grows silently. Hiring in France takes three to six months for a confirmed Next.js profile, if you find one. A dedicated Taram developer joins your existing team. They code in your repository, participate in your sprints, pick up tickets like any other team member. The only difference: they work from Madagascar, in the same time zone (one to two hours difference from France depending on the season). They don't have ten other clients. They won't disappear next month. They build expertise in your business domain week after week. Your delivery capacity doubles without signing a French permanent contract, without managing a recruitment process, without your payroll exploding. That's exactly what Taram exists for: integrating development capacity into your company, not selling a service.
Your next Next.js feature isn't going to code itself
Every week without a dedicated Next.js developer is a week of postponed migration, degraded SEO performance, and accumulating technical debt. Your freelancer isn't coming back. Your job posting won't fill itself. And your competitor who has already chosen a dedicated offshore developer is shipping while you wait. Taram doesn't offer you a CV catalog. We recruit a Next.js developer tested on App Router, Server Components and your exact stack. We have them validated by you in live coding. We integrate them into your tools in less than two weeks. One developer, one client, zero sharing. Contact us now. We present a qualified profile within ten business days. No slide deck, no three-hour scoping meeting: a Next.js developer ready to commit to your repo.
