Intermediate Kotlin Training - Develop High-Performance Apps

$5,775

  • 5 days
  • Onsite
  • 10 people max.
Ref: FWN188
10 people max.
$5,775
In-company rate: from $10,395 for the whole team
On-site and certification exam on quote
5 days
Onsite

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, Learni trainer · Development expert
Imed BEN AMOR

Learni trainer · Development expert

73%productivity gap
×3cost of inaction
Flag of the United StatesBuilt for US teams
Payment by wire transferEnhanced confidentialityPerfect for companies with 50 to 500 employeesScheduling to fit any time zone

Trusted by — schools, companies and industrial groups

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  • Microsoft

Every program built with a dedicated engineer

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Companies: Aptar, ArcelorMittal, Equans, EDF, Ubisoft and Microsoft.

Intermediate Kotlin training 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

Intermediate Kotlin curriculum: 5 modules over 5 days

Module 1 : Null 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 2 : Higher-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 3 : Kotlin 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 4 : Extensions 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 5 : Kotlin 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.

How Intermediate Kotlin skills are assessed

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

How the Intermediate Kotlin course is taught

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

Intermediate Kotlin training: access and practical arrangements

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.

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.

Our method

How Learni guarantees the quality of your Intermediate Kotlin training

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.

A child walking to school with a backpack
Our social commitment

A school kit donated to a child for every training booked

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
Enroll and offer a kit
FAQ

Intermediate Kotlin: frequently asked questions

What can participants do after Intermediate Kotlin Training training?+
They can master coroutines to handle asynchronous operations effectively, implement extensions and DSLs for concise code and optimize collections and performance with advanced lambdas. Those are the stated objectives of the Intermediate Kotlin Training program at Intermediate level, checked by the end-of-session assessment.
What does the Intermediate Kotlin Training program cover, day by day?+
Day 1: Null Safety and Smart Casts in Kotlin: IntelliJ tools, practical exercises. Day 2: Higher-Order Functions and Lambdas in Kotlin: functional methods, real-world cases. Day 3: Kotlin Coroutines: async/await, flow management, asynchronous deliverables. Day 4: Extensions and DSLs in Kotlin: custom builders, design tools. Day 5: Kotlin Multiplatform Projects: Android/iOS, MVVM integration, certification. The Intermediate Kotlin Training program runs over 5 days, delivered on site.
How is Intermediate Kotlin Training training assessed?+
Assessment relies on daily interactive quizzes on IntelliJ, evaluated final multiplatform project and qualiopi certificate with validated skills. Learni issues a completion certificate together with the individual assessment report at the end of the Intermediate Kotlin Training program, which an L&D team can file as evidence.
How much does Intermediate Kotlin Training training cost per participant?+
Intermediate Kotlin Training training costs $5,775 per participant. For an in-company team, the flat rate starts at $10,395 for the whole group, up to 8 people. The detailed quote, sent within one business day, adjusts the amount to the format and how far the syllabus is tailored to your team.
How long does Intermediate Kotlin Training training take?+
5 days, available live online (US time zones) or on-site at your offices. Half-day tracks spread over several weeks are possible so the team stays operational.
Who pays for Intermediate Kotlin Training training?+
Most US teams pay directly through their company L&D or training budget. Learni invoices in US dollars and accepts bank transfer (ACH/wire) or card, with volume pricing for teams. A purchase order is welcome.
What do participants need to know before Intermediate Kotlin Training training?+
Basics in Kotlin or Java, object-oriented programming, use of IDEs like IntelliJ.
Is a certificate issued after Intermediate Kotlin Training training?+
Yes. A Learni completion certificate is issued, along with the individual evaluation report. Learni is a certified training provider and prepares for third-party certifications, but does not award them itself.
Does Learni provide the equipment for Intermediate Kotlin Training training?+
No. A computer and a stable internet connection are required for each participant. Learni provides the learning platform, the trainer and all course materials.
Your professional training, anywhere

Let's build your Intermediate Kotlin learning path.

30 minutes with a learning advisor. No commitment. No sales pitch dressed up as a demo.

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