← All 186 courses
DEV-211 Development

MERN Stack Development

Deliver a complete MongoDB, Express, React and Node application independently, from document schema to authenticated UI. Learners model data for real access patterns, build a service layer with proper validation and error handling, and wire a React client to it with sessions that survive refresh and revocation.

B3Practitioner
6modules
42skill atoms
2role journeys
Curriculum

What this course covers.

6 modules, 42 named skill atoms. Expand any module to see them.

1MongoDB Data Modelling7 skill atoms
document vs relational shapeembedding vs referencingmongoose schemascompound indexesaggregation pipeline stagesunbounded array anti-patternschema validation rules
2Express Routing & Middleware7 skill atoms
route params and query parsingmiddleware orderingerror-handling middlewarerequest validation with zodcors configurationrate limitingasync error propagation
3React Components & Hooks7 skill atoms
jsx and propsusestate and useeffectlifting statecontrolled inputsusereducercontext for cross-cutting statekey prop and list identity
4Node Service Layer7 skill atoms
controller and service splitconfig and env loadingstructured logging with pinoconnection reuse to mongopagination and filtering contractserror taxonomy and status mappingrequest tracing ids
5Authentication & Sessions7 skill atoms
jwt signing and verificationaccess vs refresh tokenshttponly cookiessession store in redispassword hashing with bcryptcsrf protectiontoken revocation on logout
6AI Assistants Across the MERN Stack7 skill atoms
generated schemas that ignore query patternsplausible but wrong useeffect dependency arraysoutdated Express and Mongoose APIsinvented middleware packagesreviewing generated auth flowssecrets pasted into promptsengineer owns the data model
Where it fits

DEV-211 in the role journeys.

This course appears in 2 of our 45 role journeys. Here is what a learner takes immediately before and after it in each.

Full-Stack Developer

Practitioner stage
DEV-111DEV-211DEV-212

Frontend Engineer

Practitioner stage
DEV-111DEV-211DEV-301

Roles this course serves

The capability ladder

This course is authored to band B3.

Every course we run is written to one rung of the CASI ladder, so a plan can be assembled to take a team from where they are to where they need to be.

What do B1–B6 mean?The CASI Capability Ladder — click to expand

Every course targets a band on the CASI Capability Ladder — our six-band proficiency scale, anchored to open standards (O*NET, ESCO, NICE, NIST AI RMF, Bloom's). A band tells you how deep a course goes, and what evidence proves it.

What the learner can doTypical evidence
B1
AwareUnderstands concepts and vocabulary; uses tools with guidance
Knowledge checks
B2
FoundationPerforms standard tasks correctly in familiar contexts
Guided labs, autograded exercises
B3
PractitionerDelivers complete pieces of work independently
Scenario labs, proctored hands-on exams
B4
ProfessionalHandles production-grade complexity, trade-offs and failure modes
Break-fix drills, design defenses
B5
AdvancedEngineers systems end-to-end under constraints; leads others
Rubric-scored capstones, vivas
B6
ExpertSets direction; recognised authority across teams
Portfolio + panel evaluation

A note on B6. Courses in this catalog target B1–B5. B6 is not taught — it is recognised, through a portfolio and a panel, once someone is setting direction for others. Every journey here is built to land a learner at B5.

Next step

Run DEV-211 for your team.

This course runs at several lengths depending on how deep you need to go and how much of it your people already have. Tell us who is being trained and we will scope it.

Add it to a training plan Talk to our team Check your team’s level free