OpenJS Node.js Services Developer (JSNSD)

Distributed web services create operational risk when teams handle requests, validation, testing, logging, and service-to-service communication inconsistently. This intermediate OpenJS Node.js Services Developer (JSNSD) course gives IT Directors and Development Team Leads a structured path for backend JavaScript teams that need common practices for building and maintaining Node.js services.

The curriculum is best fit for software developers and backend engineers with existing JavaScript or Node.js experience; catalog guidance points to developers with roughly three to five years of backend JavaScript runtime experience. The listed modules total more than 35 hours, so Training Managers should plan this as a multi-week enablement path rather than a one-day onboarding task. For change management, assign it to teams standardizing REST API design, test coverage, user input handling, streaming, middleware, service discovery, and service-to-service auth.

CBT Nuggets Virtual Labs and team Playlists help teams practice and sequence this training into role-based development plans.

IT teams complete this training to build Node.js services that are easier to test, troubleshoot, and connect across application environments. The course maps directly to real backend service work: designing REST endpoints, validating user input, testing server behavior, streaming logs, and managing communication between services.

• More consistent APIs: Teams practice request methods, route parameters, query parameters, request bodies, status codes, headers, cookies, REST basics, and update/delete/search endpoints.
• Stronger release confidence: Developers learn manual server testing, unit testing, Mocha and Chai, Jest, and endpoint testing with Supertest.
• Better operational visibility: Teams work with Node.js streams, stream operations, server-side streaming patterns, and application log streaming.
• Safer service integration: Developers cover inter-service communication, service discovery through config servers and service registries, upstream error handling, and service-to-service authentication.

Knowledge

• How Node.js services use request methods, route parameters, query parameters, request bodies, status codes, and HTTP headers.
• REST API patterns, including common endpoints plus update, delete, search, and less common endpoint designs.
• Server-side rendering concepts with templating basics and template engines such as Handlebars, EJS, and Pug.
• Testing concepts for Node.js servers, including unit tests, endpoint tests, and common JavaScript testing tools.
• Core service operations concepts: streams, middleware, plugins, input handling, service discovery, upstream errors, and service-to-service auth.

Ability

• Build Node.js services with frameworks and structure routes for practical API behavior.
• Serve static web content and create server-rendered templates.
• Validate and handle user input with approaches that include Express Validator and Fastify.
• Write and run server tests using Mocha and Chai, Jest, and Supertest.
• Use Node.js streams for server workloads and application logs.
• Connect services through discovery patterns and handle upstream service failures more effectively.