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.
1 seat held for the next session
Request a call back and an advisor reaches you within 24 business hours, Monday to Saturday.

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.
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.
Don't let this gap widen
Without this upskilling, your team accumulates a technological gap that translates directly into productivity loss.
Organizations that don't train their talents on key topics see their competitiveness drop.
Every quarter without training is a gap widening with competitors who invest.
The cost of inaction quickly exceeds that of well-targeted training.
Introduction to Node.js and Express.js. Installation, project creation, dependency management, Express application architecture, basic routes, request and response handling, middleware concepts. First exercises on simple routes and endpoints.
RESTful structure: resources, HTTP methods, nested endpoints. Use of error-handling middleware, authentication (JWT, sessions), third-party middleware for request parsing (body-parser, helmet, cors), protection against common threats (XSS, injections), data validation (Joi, express-validator). Exercises on implementing authentication and securing APIs.
Connecting the Express application to MongoDB (Mongoose) or PostgreSQL (via Sequelize or pg). Creating models, full CRUD operations. Introduction to unit and integration testing with Mocha/Chai or Jest. Advanced logging (winston, morgan). Preparing for deployment: environments, variables, configuration management, hosting (Heroku, OVH, AWS). Q&A session and final mini-project.
The Training: Building High-Performance APIs with Express.js – Complete Course for Developers 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.
For the smooth delivery of the Training: Building High-Performance APIs with Express.js – Complete Course for Developers 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: Building High-Performance APIs with Express.js – Complete Course for Developers 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.
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.
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.
Web DevelopmentIndustry-certified
Backend DevelopmentIndustry-certified
Web DevelopmentIndustry-certified
Web DevelopmentIndustry-certified
Web DevelopmentIndustry-certified
Web DevelopmentIndustry-certified
Web DevelopmentIndustry-certified
Web DevelopmentIndustry-certified
Web DevelopmentIndustry-certified
Web DevelopmentIndustry-certified
Frameworks & LibrariesIndustry-certified
Frameworks & LibrariesIndustry-certified
Frameworks & LibrariesIndustry-certified
Frameworks & LibrariesIndustry-certified
Frameworks & LibrariesIndustry-certified
Frameworks & LibrariesIndustry-certified
Data AnalysisIndustry-certified
Data AnalysisIndustry-certified
Data AnalysisIndustry-certified
Data AnalysisIndustry-certified
Data AnalysisIndustry-certified
Data AnalysisIndustry-certified
Backend DevelopmentIndustry-certified
Backend DevelopmentIndustry-certified
Backend DevelopmentIndustry-certified
Backend DevelopmentIndustry-certified
Backend DevelopmentIndustry-certified
Backend DevelopmentIndustry-certifiedAvailable on-site and remotely. Pick your city to see the local training center.
30 minutes with a learning advisor. No commitment. No sales pitch dressed up as a demo.