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.
Founded by passionate learning and innovation experts, Learni's mission is to make professional training accessible to everyone, anywhere in the world. Our team operates in major hubs — London, New York, Boston — and internationally, to support talents and organizations in upskilling.
Don't let this gap widen
Without Express.js, your backend projects stagnate: 40% of junior devs lose 2 weeks on basic setups, exposing to security flaws (80% of breaches via unprotected routes, source OWASP).
Trained competitors deploy 3x faster, clients flee slow apps (churn rate +25%).
Unmanaged bugs cost 500€/incident in prod.
Invest 28h to avoid these pitfalls, master Express and multiply freelance opportunities tomorrow.
Discover Express.js by installing Node.js and npm, create your first HTTP server that responds to GET requests, test with Postman to validate JSON responses, complete practical exercises on ports and listening, obtain a deliverable: functional server ready to evolve, while mastering the basics for fast and reliable developments.
Dive into Express routing to define GET/POST/PUT/DELETE endpoints, integrate middlewares to log requests and validate data, practice with concrete cases like a users API, develop custom handlers, produce a deliverable: modular routing module, boost your backend productivity today.
Connect Express to MongoDB via Mongoose to persist data, implement a simple MVC pattern, generate dynamic views with EJS, practice full CRUD operations with forms and validation, create secure APIs against injections, deliverable: basic operational fullstack application, turn your ideas into concrete prototypes in a blink.
Finalize a JWT-authenticated REST API, add unit tests with Jest, optimize for production with dotenv and helmet, deploy live on Heroku or Vercel, simulate real error and scaling scenarios, obtain a deliverable: deployed and Swagger-documented API, launch your pro projects with confidence and speed.
The Training Express.js - Create High-Performance Backend APIs program is delivered onsite or remote (blended-learning, e-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.
For the smooth delivery of the Training Express.js - Create High-Performance Backend APIs 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.
Assessment of skills acquired during the Training Express.js - Create High-Performance Backend APIs program is performed through:
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.
Learni programs are available inter-company and intra-company, onsite or remote. Enrollments are possible up to 48 business hours before the program starts. Our programs are eligible for corporate funding paths. Contact us to discuss your training project and funding options.
« cool, j'ai appris des trucs »
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
« 😊👍 »
« bien 👍 »
« Allan Busi t'es au top, continue comme ça. formation géniale »
« cool, j'ai appris des trucs »
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
« 😊👍 »
« bien 👍 »
« Allan Busi t'es au top, continue comme ça. formation géniale »
« cool, j'ai appris des trucs »
« j'etais perdu au debut mais Ramy Saharaoui m'a pas laché, il a pris le temps. merci vraiment »
« la formation dev etait intense mais grave bien. merci Anthony Khelil »
« 😊👍 »
« bien 👍 »
« Allan Busi t'es au top, continue comme ça. formation géniale »
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.
Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.
30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.
No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.
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.
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Développement WebIndustry-certified
Développement WebIndustry-certified
Développement WebIndustry-certified
Développement WebIndustry-certified
Développement WebIndustry-certified
Frameworks & BibliothèquesIndustry-certified
Frameworks & BibliothèquesIndustry-certified
Frameworks & BibliothèquesIndustry-certified
Frameworks & BibliothèquesIndustry-certified
Frameworks & BibliothèquesIndustry-certified
Frameworks & BibliothèquesIndustry-certified
Analyse de DonnéesIndustry-certified
Analyse de DonnéesIndustry-certified
Analyse de DonnéesIndustry-certified
Analyse de DonnéesIndustry-certified
Analyse de DonnéesIndustry-certified
Analyse de DonnéesIndustry-certified30 minutes with a learning advisor. No commitment. No sales pitch dressed up as a demo.