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.
Describe your need, get a tailored program and a pre-filled quote in 3 min. A 100% free call with an advisor.
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Discover Express.js by installing Node.js and npm, create your first functional HTTP server, test simple GET routes with Postman, complete exercises on JSON responses, and produce a ready-to-use basic server, while gaining immediate confidence to code your own backend apps.
Dive into Express routing, define parameterized routes for a REST API, handle 404 errors with built-in middleware, practice on real cases like user CRUD, test with Thunder Client, and deliver a modular router that accelerates your future developments.
Master Express middlewares to parse JSON, secure with Helmet against XSS, manage CORS for frontend integration, code custom middlewares for logs and basic auth, apply to a simulated e-commerce project, and obtain a production-ready, team-secure server.
Connect Express to MongoDB via Mongoose, model schemas for products and users, implement persistent CRUD operations, manage validations and advanced queries, test on real data from a blog API, and deploy a fully operational full-stack backend that impresses recruiters.
Finalize your complete REST API, optimize performance with PM2, deploy live on Heroku or Vercel, debug common errors, integrate unit tests with Jest, present your portfolio-ready deliverable, and leave with a professional project to showcase on LinkedIn tomorrow.
The Training Express - Create High-Performing REST APIs in 5 Days 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 Express - Create High-Performing REST APIs in 5 Days program, the following equipment is required:
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.
Skills assessment methods
Assessment of skills acquired during the Training Express - Create High-Performing REST APIs in 5 Days program is performed through:
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.
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.
Rigorous trainer selection
Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.
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.
Content tailored to your context
No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.
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.
A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.

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.
30 minutes with a learning advisor. No commitment. No sales pitch dressed up as a demo.
Programming LanguagesIndustry-certified
Backend & APIsIndustry-certified
Backend & APIsIndustry-certified
Backend & APIsIndustry-certified
Backend & APIsIndustry-certified
Backend & APIsIndustry-certified
JavaScript & TypeScriptIndustry-certified
JavaScript & TypeScriptIndustry-certified
JavaScript & TypeScriptIndustry-certified
Programming LanguagesIndustry-certified
Programming LanguagesIndustry-certified
Programming LanguagesIndustry-certified
Web developmentIndustry-certified
Web developmentIndustry-certified
Web developmentIndustry-certifiedAvailable on-site and remotely. Pick your city to see the local training center.
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