Training Next.js Expert - Master Scalable and Performant Apps

On quote$4,620

  • 4 days
  • Onsite
  • 10 people max.
Ref: CHN174
10 people max.
On quote$4,620
In-company rate: on quotefrom $7,865 for the whole team
On-site and certification exam on quote
4 days
Onsite

Don't let this gap widen

Why this program matters

  • Without expert Next.js mastery, your React apps remain stuck on the obsolete Pages Router, with loading times >3s leading to 53% mobile drop-offs (source Google).

  • Develop 2x slower without Server Components, multiply cloud costs by 3 due to lack of edge caching, lose 40% of SEO leads due to slow client-only rendering.

  • Facing Vercel-native competition, your projects stagnate, auth bugs leak sensitive data (GDPR risk 4% revenue), teams frustrated by mediocre performance.

  • Invest 28h to scale to 100k users/day without rewriting everything.

Célian Lebacle, Learni trainer · Web & mobile expert
Célian Lebacle

Learni trainer · Web & mobile expert

73%productivity gap
×3cost of inaction
Flag of the United StatesBuilt for US teams
Payment by wire transferEnhanced confidentialityPerfect for companies with 50 to 500 employeesScheduling to fit any time zone

Trusted by — schools, companies and industrial groups

25,721 programs · 25 countries

  • Aptar
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  • Equans
  • EDF
  • Ubisoft
  • Microsoft

Every program built with a dedicated engineer

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Companies: Aptar, ArcelorMittal, Equans, EDF, Ubisoft and Microsoft.

Learning objectives

  • Implement the App Router for dynamic and parallel routing
  • Develop Server Components and Actions for optimized rendering
  • Optimize performance with Streaming, Suspense, and Partial Prerendering
  • Secure applications via Auth.js, middleware, and server validations
  • Deploy and scale on Vercel with advanced caching and edge functions
  • Master Turbopack and configurations for ultra-fast builds

Program

Module 1App Router and Advanced Layouts: Migration and Parallel Routing (React 19, TypeScript)

Dive into the Next.js 14 App Router, migrate existing Pages Router apps through practical exercises on a real e-commerce project, configure nested layouts, loading states, and error boundaries, generate dynamic SEO metadata, test parallel routing for multi-view dashboards, produce a scalable navigable prototype.

Module 2Server Components and Actions: Secure Hybrid Rendering (React Server Components)

Master Server Components for server-first data, implement Server Actions with revalidation and optimistic mutations in complex forms, integrate React 19 directives like use optimistic, manage fetch with granular caching, develop a full-stack CRUD on PostgreSQL database, validate all inputs server-side, leave with a robust, stateless backend.

Module 3Performance and Streaming: Partial Prerendering, Suspense (Turbopack)

Boost your apps with Streaming and Suspense for TTI under 1s, enable Partial Prerendering on dynamic pages, optimize images via advanced next/image and WebP/AVIF, profile with React DevTools and Lighthouse, integrate Turbopack for 700x faster builds, real-world media site case with infinite lazy-loading, deliver a quantified and actionable performance audit.

Module 4Auth, Deployment, and Scaling: Vercel, Edge Runtime, Best Practices (Auth.js)

Secure with Auth.js (NextAuth) and custom middleware, deploy on Vercel with monorepo and edge functions, configure hybrid ISR/SSG and international caching, scale via connection pooling and observability, group code review on your personal project, finalize a live-deployed MVP, leave certified with a post-training roadmap.

Evaluation method

  • Daily interactive quizzes, final full-stack project evaluation, Qualiopi certification

Learning method

  • 90% hands-on with real-world cases, pair programming, personalized feedback

Methods, materials and delivery

The Training Next.js Expert - Master Scalable and Performant Apps program is delivered onsite or remote (blended-learning, virtual classroom, remote presence). At Learni, an industry-certified training organization, every program is built to maximize skills acquisition regardless of the chosen format.

The trainer alternates between demonstrative, interrogative and active methods (through hands-on labs and/or scenarios). This pedagogical approach guarantees concrete learning that's immediately applicable at work.

Equipment required

For the smooth delivery of the Training Next.js Expert - Master Scalable and Performant Apps program, the following equipment is required:

  • Mac or PC computers, high-speed fiber internet, whiteboard or flipchart, projector or interactive touch screen (for remote sessions)
  • Training environments installed on workstations or accessible online
  • Course materials, hands-on exercises and complementary resources
  • Post-training access to materials and educational resources

For intra-company training on a site outside Learni, the client commits to providing all required teaching materials (computers, internet, etc.) for the smooth delivery of the program in line with the prerequisites in the communicated program.

* contact us for remote delivery feasibility** ratio varies depending on the program

Skills assessment methods

Assessment of skills acquired during the Training Next.js Expert - Master Scalable and Performant Apps program is performed through:

  • During training: case studies, hands-on labs and professional scenarios
  • End of training: self-assessment questionnaire and skills evaluation by the trainer
  • After training: completion certificate detailing acquired skills

Program accessibility

Learni is committed to making its programs accessible. All our programs are accessible to people with disabilities. Our teams are available to adapt the pedagogical methods to your specific needs. Please contact us for any adjustment request.

Enrollment terms and lead times

Registration is possible up to 48 business hours before the start of training. All our programs are built for corporate L&D budgets and delivered onsite or remotely.

The Learni story

Founded by engineers and learning experts, Learni's mission is to make high-impact tech training accessible to teams everywhere. We work remotely with organizations across the US and Canada, in your time zone, to help teams upskill fast.

Our method

Training quality, guaranteed at every step

Before, during, after: we frame the brief, introduce the trainer, tailor the content and measure impact. You stay in control from kickoff to wrap-up.

Step 1

Rigorous trainer selection

Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.

  • Triple validation: technical, pedagogical, sectoral.
  • Minimum rating 4.8/5 over the last 12 sessions.
Step 2

You meet the trainer beforehand

30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.

  • Live briefing on goals and team context.
  • Veto right — we swap the trainer for free if needed.
Step 3

Content tailored to your context

No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.

  • Hands-on cases drawn from your stack and projects.
  • Program co-written then validated by your team.
Step 4

Continuous quality follow-up

Live evaluations, 30/90/180-day check-ins and a consolidation plan. If the impact misses the mark, we rework it.

  • NPS, knowledge quizzes and skills self-assessment.
  • Satisfaction guarantee: fully satisfied or free rework.

A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.

A child walking to school with a backpack
Our social commitment

A school kit donated to a child for every training booked

To fight inequalities in access to education, Learni donates a complete school kit to a child in need for every training booked. You build your skills, a child heads back to school.

  • Backpack, notebooks and essential supplies
  • Distributed through our partner charities
  • Included, at no extra cost to you
Enroll and offer a kit
FAQ

Frequently asked questions

Which tools are used in Next.js Expert training?+
Hands-on work runs on react 19, typeScript, react Server Components, turbopack and auth.js. Those tools come from the Next.js Expert program itself, delivered on site over 4 days, so participants practise on the stack they will use at work.
What can participants do after Next.js Expert training?+
They can implement the App Router for dynamic and parallel routing, develop Server Components and Actions for optimized rendering and optimize performance with Streaming, Suspense, and Partial Prerendering. Those are the stated objectives of the Next.js Expert program at Expert level, checked by the end-of-session assessment.
What does the Next.js Expert program cover, day by day?+
Day 1: App Router and Advanced Layouts: Migration and Parallel Routing (React 19, TypeScript). Day 2: Server Components and Actions: Secure Hybrid Rendering (React Server Components). Day 3: Performance and Streaming: Partial Prerendering, Suspense (Turbopack). Day 4: Auth, Deployment, and Scaling: Vercel, Edge Runtime, Best Practices (Auth.js). The Next.js Expert program runs over 4 days, delivered on site.
How is Next.js Expert training assessed?+
Assessment relies on daily interactive quizzes, final full-stack project evaluation, Qualiopi certification. Learni issues a completion certificate together with the individual assessment report at the end of the Next.js Expert program, which an L&D team can file as evidence.
How much does Next.js Expert training cost per participant?+
Next.js Expert training is priced on quote. The amount depends on headcount, format and how far the syllabus is tailored to your team. A detailed quote is sent within one business day, and team pricing covers the whole group from the second participant.
How long does Next.js Expert training take?+
4 days, available live online (US time zones) or on-site at your offices. Half-day tracks spread over several weeks are possible so the team stays operational.
Who pays for Next.js Expert training?+
Most US teams pay directly through their company L&D or training budget. Learni invoices in US dollars and accepts bank transfer (ACH/wire) or card, with volume pricing for teams. A purchase order is welcome.
What do participants need to know before Next.js Expert training?+
Advanced mastery of React (hooks, context, custom hooks), TypeScript, Node.js, Next.js basics (Pages Router, API Routes).
Is a certificate issued after Next.js Expert training?+
Yes. A Learni completion certificate is issued, along with the individual evaluation report. Learni is a certified training provider and prepares for third-party certifications, but does not award them itself.
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