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Intermediate Kotlin Training - Develop High-Performance Apps

Ref: FWN188
10 people max.
From $5,775 HT / per person
On-site on request · +$540 with certification exam
5 days
Remote

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Equans
EDF
Ubisoft
Microsoft
Aptar
ArcelorMittal
Equans
EDF
Ubisoft
Microsoft
Aptar
ArcelorMittal
Equans
EDF
Ubisoft
Microsoft
Aptar
ArcelorMittal
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Learning objectives

  • Master coroutines to handle asynchronous operations effectively
  • Implement extensions and DSLs for concise code
  • Optimize collections and performance with advanced lambdas
  • Develop robust Android apps with Kotlin Multiplatform
  • Manage null safety and smart casts in real projects
  • Integrate Kotlin into modern MVVM architectures
A child walking to school with a backpack
Our social commitment

A school kit donated to a child for every training

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.

  • Backpack, notebooks and essential supplies
  • Distributed through our partner charities
  • Included, at no extra cost to you

The Learni story

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

Why this program matters

  • Without this training, your Kotlin apps risk 40% null pointer bugs in production, tripling hotfixes and costing 20k€/year in maintenance.

  • Poorly managed coroutines block your mobile UIs, losing 25% of frustrated users.

  • Stay stuck with verbose Java while trained devs deploy 2x faster on Android/iOS.

  • Avoid urgent rewrites, missed deadlines, and competitors advancing with Multiplatform.

  • Invest 35 hours to gain months of productivity and a +15% salary boost.

Imed BEN AMOR
Imed BEN AMOR

Learni trainer · Development expert

73%productivity gap
×3cost of inaction

Program

Module 1Null Safety and Smart Casts in Kotlin: IntelliJ tools, practical exercises

Dive into null management with the Elvis operator and safe calls, practice refactoring Java code to secure Kotlin, complete exercises on smart casts to avoid crashes, produce infallible functions ready for your Android apps, and boost productivity from day one.

Module 2Higher-Order Functions and Lambdas in Kotlin: functional methods, real-world cases

Explore lambdas with receiver, function chains like map and filter, apply them to real datasets for sorting and transforming data, code interactive examples with live coding, generate reusable utilities that speed up daily development, and experience the power of functional programming.

Module 3Kotlin Coroutines: async/await, flow management, asynchronous deliverables

Start coroutines with launch and async, manage suspensions for non-blocking APIs, implement flows for real-time data streams, test on mobile use cases like network requests, produce a production-ready coroutine module, and master asynchronous without hellish callbacks.

Module 4Extensions and DSLs in Kotlin: custom builders, design tools

Create extensions to enrich standard classes, build fluent DSLs for HTML or JSON, apply them to complex configs, practice in pairs on mini-projects, deliver copy-paste snippets for your teams, and transform verbose scripts into poetic, maintainable code.

Module 5Kotlin Multiplatform Projects: Android/iOS, MVVM integration, certification

Assemble everything into a fullstack multiplatform project with KMM, integrate Room and Retrofit in Kotlin, deploy a complete MVVM app, debug in groups with coach feedback, finalize a certified portfolio, and leave with skills that multiply your devops and mobile opportunities.

Evaluation method

  • Daily interactive quizzes on IntelliJ
  • Evaluated final multiplatform project
  • Qualiopi certificate with validated skills

Learning method

  • 70% hands-on with real cases
  • 30% theory with live demos
  • Individualized exercises and pair work

Methods, materials and delivery

The Intermediate Kotlin Training - Develop High-Performance Apps 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.

Equipment required

For the smooth delivery of the Intermediate Kotlin Training - Develop High-Performance Apps program, the following equipment is required:

  • Mac or PC computers, high-speed fiber internet, whiteboard or flipchart, projector or interactive touch screen (for remote sessions)
  • Training environments installed on workstations or accessible online
  • Course materials, hands-on exercises and complementary resources
  • Post-training access to materials and educational resources

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.

* contact us for remote delivery feasibility** ratio varies depending on the program

Skills assessment methods

Assessment of skills acquired during the Intermediate Kotlin Training - Develop High-Performance Apps program is performed through:

  • During training: case studies, hands-on labs and professional scenarios
  • End of training: self-assessment questionnaire and skills evaluation by the trainer
  • After training: completion certificate detailing acquired skills

Program accessibility

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.

Enrollment terms and lead times

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.

Our method

Training quality, guaranteed at every step

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.

Step 1

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.
Step 2

You meet the trainer beforehand

30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.

  • Live briefing on goals and team context.
  • Veto right — we swap the trainer for free if needed.
Step 3

Content tailored to your context

No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.

  • Hands-on cases drawn from your stack and projects.
  • Program co-written then validated by your team.
Step 4

Continuous quality follow-up

Live evaluations, 30/90/180-day check-ins and a consolidation plan. If the impact misses the mark, we rework it.

  • NPS, knowledge quizzes and skills self-assessment.
  • Satisfaction guarantee: fully satisfied or free rework.

A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.

FAQ

Frequently asked questions

How much does the Intermediate Kotlin Training - Develop High-Performance Apps training cost?+
The individual price is $5,775 (USD). The team / on-site group package is shown on the course page. A detailed quote is sent within one business day.
How long is the Intermediate Kotlin Training - Develop High-Performance Apps training?+
The training lasts 5 journées, available live online (US time zones) or on-site at your offices.
How is this training paid for?+
Most US teams pay directly through their company (L&D or training budget). We invoice in US dollars and accept bank transfer (ACH/wire) or card, with volume pricing for teams. A purchase order is welcome.
Are there any prerequisites?+
Basics in Kotlin or Java, object-oriented programming, use of IDEs like IntelliJ.
Is a certificate delivered at the end?+
Yes. A Learni completion certificate is issued, along with the individual evaluation report.
Does Learni provide the equipment?+
No. A computer and stable internet connection are required for the participant. Learni provides the educational platform, the trainer and all course materials.
On-site & remote

This training across cities

Available on-site and remotely. Pick your city to see the local training center.

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