Private corporate batches, live online cohorts and 1-on-1 mentoring in the JavaScript task runner in production — Gruntfile configuration, multi-tasks and targets, the asset pipeline, plugins, CI integration and a realistic migration path — taught by a practitioner who runs it in production.
20 years across DevOps, SRE and Security · 10,000+ engineers trained · Trained teams at JPMorgan Chase, Verizon, Nokia and the World Bank
Principal DevOps Engineer & Architect
Rajesh teaches Grunt as a maintenance and migration discipline, not as a greenfield choice: reading a large Gruntfile accurately, the multi-task and target model that explains why a change affects more than expected, file expansion and template references, writing custom and async tasks, and keeping a plugin set upgradable across Node versions. Sessions work on real build configurations, characterise what the current build actually produces, and then move it step by step onto modern tooling with verification at every stage.
Twenty years across DevOps, SRE and Security, in principal and architect roles at PayPay, SoftwareAG, ServiceNow, JDA Software, Intuit, Adobe and others. He has trained engineers at JPMorgan Chase, Verizon, Nokia, the World Bank, VMware, Oracle, Mercedes-Benz and Airbus — more than 10,000 people personally. He teaches what he runs, not what he reads.
You are booked with a named engineer, and that is who turns up. Marketplaces and larger providers rotate whoever is free, so the person who sold you the agenda is rarely the person teaching it.
The same trainer is available for the next engagement, which matters when a team builds on what it learned last time.
Your batch is assigned a named trainer before it starts, and that is who teaches it. See the full faculty.
Engagements are matched on the tool, not the calendar. For Grunt that means a trainer who has run it in production — the JavaScript task runner in production — Gruntfile configuration, multi-tasks and targets, the asset pipeline, plugins, CI integration and a realistic migration path — rather than whoever is free that week. You are told who is teaching before you commit, and that person is on the discovery call that shapes the agenda.
Where a batch is large enough to need a second trainer, the pairing is declared up front. The lead trainer stays accountable for the syllabus and the assessment either way.
Principal DevOps Engineer & Architect
Twenty years across DevOps, SRE and Security in principal and architect roles at PayPay, SoftwareAG, ServiceNow, JDA Software, Intuit, Adobe, IBM/Emptoris, Ness, MindTree and Accenture. He has trained more than 10,000 engineers personally, at organisations including JPMorgan Chase, Verizon, Nokia, the World Bank, VMware, Oracle, Mercedes-Benz and Airbus. He teaches what he runs, not what he reads.
Teams of 8–30
Custom agenda, your timezone, onsite or online, NDA-friendly.
Request a quoteIndividual engineers
A private instructor and a curriculum built around your goal.
₹99,999Individuals who want peers
Scheduled batch, max 8 to 10 hours of live instruction.
₹34,999A private batch starts with a discovery call. We look at the stack you actually run — the CI system, the cloud, the constraints — and map the agenda onto it, so examples use your topology rather than a generic one.
Delivery is onsite at your premises, live online, or hybrid, scheduled around your release calendar rather than ours. Batches run 8 to 30 engineers.
Every attendee leaves with recordings, slides, lab repositories and a completion certificate. You receive an attendance and assessment report. Invoicing supports PO and GST.
Talk to us about a private Grunt batchGrunt is a task runner for JavaScript projects, driven by a configuration file called a Gruntfile. Where a bundler decides how modules are resolved and combined, Grunt simply runs tasks: it reads a large configuration object, matches sets of files with source and destination patterns, and hands them to plugins that lint, concatenate, minify, compile, copy, watch or deploy. Tasks are composed into named sequences, so a single command can take a working tree to a deployable build directory.
The design is configuration over code, and understanding that is what makes a Gruntfile readable. grunt.initConfig receives one object whose top-level keys are task names; each task can define multiple named targets, each with its own options and file mappings. Files can be listed explicitly, expressed as a source-to-destination map, or expanded dynamically from glob patterns. Configuration values support template expressions, so one target can reference package metadata or another task's output path. Tasks come in two shapes: ordinary tasks that run once, and multi-tasks that iterate over every target defined for them.
Grunt's position today should be stated plainly. It is stable and widely deployed but no longer where the JavaScript ecosystem's development effort goes; new front-end projects overwhelmingly use bundler-centric tooling or plain npm scripts. That does not make Grunt knowledge unnecessary — it makes it a maintenance and migration skill. A great deal of shipping software still builds this way, and the engineers responsible for it need to keep those builds working, secure and fast, and to move off them deliberately rather than by rewrite-and-hope.
Grunt-built projects are everywhere in enterprise front ends, internal tooling, CMS themes and dashboards that were written between roughly 2012 and 2018 and are still in service. Those builds tend to fail for reasons unrelated to the application: a Node upgrade breaks a native plugin dependency, an audit flags a transitive package inside a plugin nobody has updated in years, or a watch task stops working on a new operating system.
The engineers who wrote them have usually moved on, and the ones who inherit them have never used Grunt. So the build becomes untouchable — a step in CI that nobody understands and everyone fears. That is expensive in two directions: it blocks routine dependency updates, and it makes the eventual migration far riskier than it needs to be, because nobody can state precisely what the current build produces.
The skill worth having is therefore twofold. First, competence with Grunt itself: reading a Gruntfile accurately, configuring targets, writing custom tasks, and keeping the plugin set maintained. Second, the ability to characterise an existing build's output well enough to reproduce it under different tooling, and to migrate incrementally with verification at each step rather than in a single risky cutover.
The task runner model, and an honest placement of Grunt in today's JavaScript tooling. What problems it solves well, what it was never designed to do, and how it compares with npm scripts, bundlers and newer build tools — so that a decision to keep, extend or migrate a build is made deliberately.
Topics: What is Grunt? — the task runner model and configuration over code · Why use Grunt? — the problems it was built to solve · Benefits of Grunt: declarative configuration, plugin breadth, consistency across projects · Real-world use cases in existing codebases · Task runner versus module bundler — different jobs, frequently confused · Grunt compared with npm scripts, Gulp and modern bundler tooling · Grunt's current maintenance status and what that means for a production build
Getting a working, reproducible Grunt environment. The split between the command-line interface and the local Grunt package, how project dependencies are declared and locked, and the file layout that everything else assumes.
Topics: Installation — grunt-cli globally versus grunt locally, and why the split exists · Project setup — package.json, devDependencies and lock files · Node version compatibility and managing multiple versions · The Gruntfile: location, module wrapper and structure · Loading tasks: loadNpmTasks, load-grunt-tasks and load-grunt-config · Reproducible installs with npm ci and committed lock files · Verifying the setup and reading grunt --help output
The core of Grunt and the source of most confusion in inherited projects. One large configuration object, tasks with multiple named targets, four different ways to express file mappings, and template expressions that let configuration reference itself.
Topics: Configuring tasks — grunt.initConfig and the shape of the configuration object · Tasks and targets: why a task can run several times with different settings · Options: task-level defaults and per-target overrides · File formats: compact, files object, files array and dynamic expansion · Dynamic expansion with expand, cwd, src, dest and ext · Glob patterns, negation and ordering · Template expressions and referencing package metadata or other configuration · grunt.config get and set for computed configuration
What most Grunt builds actually do. Combining and shrinking assets, preserving debuggability with source maps, compiling stylesheets and templates, and the cache-busting and reference-rewriting steps that make the output safe to serve from a CDN.
Topics: Concatenation — ordering, banners and separators · Minification of JavaScript and CSS, and what each minifier is safe to assume · Source maps through concatenation and minification · Stylesheet compilation: Sass, Less and PostCSS pipelines · Image, font and static asset copying and optimisation · Cache busting with content hashes, and rewriting references · Lab and example — building a complete pipeline against a real project · Verifying output: size budgets and comparing against the previous build
Moving beyond configuration into code. Running and composing tasks from the command line, registering alias sequences, and writing your own tasks — including multi-tasks that iterate over targets and asynchronous tasks that must signal completion correctly.
Topics: Running tasks — task:target syntax, defaults and command-line options · Creating your own tasks with grunt.registerTask · Alias tasks and composing build, test and release sequences · Multi-tasks with grunt.registerMultiTask and iterating over targets · Asynchronous tasks and this.async — and what happens when you forget it · The grunt API: file, log, template, option, fail and util · Failing correctly: warn versus fatal, and --force · Task ordering, dependencies between tasks and shared state
Grunt's real capability comes from its plugin ecosystem, and so does most of its maintenance burden. Choosing plugins, watching for rebuilds during development, running work concurrently, and auditing the dependency tree a plugin drags in behind it.
Topics: Using third-party tasks and evaluating plugin quality before adoption · External tasks and loading tasks from outside node_modules · Grunt plugins in common use: watch, newer, concurrent, connect, copy, clean · Watch and live-reload workflows for development · Running only what changed, and why full rebuilds creep back in · Auditing plugin dependency trees for vulnerabilities and abandonment · Writing and publishing your own Grunt plugin · Replacing an unmaintained plugin without changing build output
Turning tasks into a release. Separating development and production task sequences, producing a clean and verifiable build artifact, injecting environment configuration without baking secrets into it, and driving deployment from the same task graph.
Topics: Creating the build — development versus production task sequences · Clean builds, output directory hygiene and stale artifact removal · Environment-specific configuration without embedding secrets · Deployment targets: static hosting, object storage, servers and CDN invalidation · Versioning and stamping build metadata into the output · Rollback: keeping previous builds addressable · Verifying a deployment rather than assuming it
Making the build a gate rather than a formality. Linting and test tasks wired into the sequence, headless browser execution, and the CI concerns that decide whether a Grunt build is reliable on an agent — exit codes, caching, install determinism and log volume.
Topics: Testing with Grunt — unit test runners and headless browser execution · Linting and style enforcement as a failing step · Code coverage collection and thresholds · Continuous integration with Grunt — pipeline structure and stages · Exit codes, --force and why a green pipeline can hide a failed task · Caching node_modules and build output on ephemeral agents · Build time analysis and finding the slow task · Reproducibility: identical output on an agent and on a laptop
Keeping an inherited build alive, and moving off it when that is the right decision. Node upgrades, dependency remediation, developer tooling around the build, and an incremental migration strategy that verifies equivalence at each step instead of betting on a rewrite.
Topics: JavaScript resources and staying current with ecosystem changes · Development tools: debugging tasks, profiling, editor integration · Node version upgrades and native dependency rebuilds · Vulnerability remediation inside plugin dependency trees · Characterising existing output so a migration can be verified · Incremental migration to npm scripts, and what that covers · Migration to a bundler-centric toolchain, task by task · Running old and new builds side by side and comparing artifacts · Deciding to keep Grunt — the cases where migration is not worth it
We rebuild the agenda around the tools you actually run.
Request a custom agendaTake a large legacy Gruntfile, map every task and target to what it produces, and document the build's real inputs and outputs without relying on the original author.
Build a complete asset pipeline — lint, compile, concatenate, minify, source-map, hash and rewrite references — and verify the output is servable from a CDN.
Write a custom multi-task with correct asynchronous completion and failure handling, then use it to drop an abandoned plugin without changing build output.
Upgrade a legacy project across Node versions, rebuild native dependencies, remediate audit findings and prove the build still produces the same artifact.
Wire lint, test and build into a pipeline with correct exit codes and caching, then verify that a broken task stops a merge instead of passing silently.
Characterise the existing build's output, migrate tasks incrementally to modern tooling, and prove equivalence at every step with a rollback point maintained throughout.
Billed yearly at ₹9,996
Max 8 to 10 hours of live instruction
Full program, private instructor
8–30 engineers · custom agenda · onsite or online · PO and GST invoicing
Refunds. If we cancel or postpone a cohort, you get a full refund within 15 days. There is no money-back guarantee otherwise.
Terms. Course material remains licensed to the attendee. Read the terms.
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Certificate of completion
The trainer (Rajesh) provided very good sessions on SRE profession. Not only hands-on learning on the tools but also SRE mindset.
Very good training session. Well explained from the basics to the complex concepts. Also tried to cover practicals and demos within the 3 hour sessions. The learning content and videos are of a great deal of help.
Basics explanation was exemplary from Rajesh where he dealt with complicated topics to be simple. Great learning stuff personally for me.
Very detailed explanation and has lots of patience in attending the questionnaire. Thanks again for your wonderful sessions.
Good discussion, helped us to understand different tools in SRE.
Got good lab sessions which kept the new DevOps tool learnings to the point and it helped a lot in my career.
| What matters | YouTube + blogs | Generic online course | Freelance marketplace | DevOpsSchool |
|---|---|---|---|---|
| Named practitioner | No | Rarely | Varies per booking | Yes — same trainer each time |
| Production experience | Unknown | Unknown | Unverified | 20 years, named employers |
| Custom agenda | No | No | Sometimes | Built from your stack |
| Onsite delivery | No | No | Sometimes | Yes |
| Lab environment | None | Sandbox that expires | Varies | Your own cloud — skill goes with you |
| Assessment | None | Quiz | Rarely | Assignments + capstone per module |
| Per-attendee certificates | No | Sometimes | Rarely | Yes |
| Corporate invoicing | No | Limited | Varies | PO and GST |
| Post-training support | None | Forum, time-limited | None | Lifetime forum access |
Tell us the team, the stack and the timeline. You'll get a straight answer, not a sales sequence.
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