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.
Describe your need, get a tailored program and a pre-filled quote in 3 min. A 100% free call with an advisor.
1 seat held for the next session
Request a call back and an advisor reaches you within 24 business hours, Monday to Saturday.

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.
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
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.
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.
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.
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.
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.
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.
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.
For the smooth delivery of the Intermediate Kotlin Training - Develop High-Performance Apps program, the following equipment is required:
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.
Assessment of skills acquired during the Intermediate Kotlin Training - Develop High-Performance Apps program is performed through:
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.
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.
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.
Each trainer is validated on three criteria: hands-on field expertise, proven pedagogy and alignment with your industry.
30-minute video call between you and the selected trainer to validate the fit, adjust content and clear any final doubts.
No recycled slides. The syllabus is reworked from your real cases: tools, constraints, vocabulary, ongoing projects.
Live evaluations, 30/90/180-day check-ins and a consolidation plan. If the impact misses the mark, we rework it.
A simple promise: you don't pay to discover the trainer on day one. Everything is validated upfront, by you.
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Graphic DesignIndustry-certifiedAvailable on-site and remotely. Pick your city to see the local training center.
30 minutes with a learning advisor. No commitment. No sales pitch dressed up as a demo.