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Kotlin Programming Beginner

The Kotlin Programming course equips Android developers, backend engineers, and full-stack developers with modern, concise language skills to reduce boilerplate code and accelerate feature delivery. With Kotlin being Google’s preferred language for Android and ranked among the top five highest-paying programming languages in 2024, this training addresses the industry demand for efficient, cross-platform development.

This course prepares learners for JetBrains-recognized Kotlin proficiency certifications, using official vendor-authorized courseware and offering 30-day lab access for hands-on practice. Graduates gain a competitive edge in high-demand roles at leading tech firms, positioning them for faster career advancement and higher earning potential in the evolving multiplatform development landscape.

16 Hours (2 Days)
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11+ professionals trained

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Course Overview

The Kotlin Programming course by Open Source is designed for developers seeking to master modern application development using the Kotlin language, a preferred choice for Android and cross-platform solutions. This training prepares learners for the Kotlin Professional Certificate by JetBrains, a recognized credential validating expertise in multiplatform development. Ideal for Mobile Developers, Full Stack Developers, and Backend Engineers, the course equips professionals with skills in demand across the industry—Kotlin appears in over 300 active job listings as of 2026, with roles emphasizing its use in building scalable, type-safe applications. As Google's official "Kotlin-first" approach for Android continues to drive adoption, organizations increasingly seek developers proficient in Kotlin to streamline development and improve code maintainability.

Participants engage with key technologies including IntelliJ IDEA, Ktor for asynchronous server and client development, Compose Multiplatform for unified UIs across Android, iOS, desktop, and web, SQLDelight for type-safe database access, and Gradle for build automation. The hands-on labs are conducted within the IntelliJ IDEA environment, where students configure and build real-world projects such as full-stack applications with shared business logic. A capstone project involves creating a multiplatform app that uses Ktor services to fetch data and Compose Multiplatform to render a consistent user interface across platforms, demonstrating practical proficiency in code sharing, dependency injection with Koin, and platform-specific integrations.

This course directly prepares candidates for the Kotlin Professional Certificate by JetBrains, an industry-recognized credential that validates full-stack, multiplatform development skills. Certified developers can expect competitive compensation, with mid-senior level Kotlin roles advertising salaries between $110,000 and $165,000 annually, reflecting the high value placed on cross-platform efficiency. Koenig Solutions enhances this learning journey with Guaranteed-to-Run classes and access to official courseware, ensuring structured, reliable training. Upon completion, developers are positioned to lead in building unified, high-performance applications across mobile, web, and backend systems, driving innovation in modern software engineering.

What You'll Learn

✓Implement Kotlin null safety features and variable declarations to prevent runtime errors and improve code reliability
✓Design object-oriented programs using Kotlin classes to create modular and reusable code structures
✓Configure Gradle build systems for Kotlin projects to streamline development and deployment processes
✓Develop functional programming solutions with Kotlin lambdas to write concise and expressive code
✓Manage collections and ranges in Kotlin applications to handle data efficiently
✓Optimize code using Kotlin inline and extension functions to enhance performance and readability

Prerequisites

Recommended knowledge before taking this course
  • Proficiency in Java 8 or higher is required to understand the interoperability features central to Kotlin Programming by Open Source.
  • Object-oriented design principles are necessary for implementing Kotlin data classes and sealed hierarchies effectively.
  • IntelliJ IDEA 2023.x or higher is required to utilize the built-in Kotlin compiler and refactoring tools provided in Kotlin Programming by Open Source.
  • Gradle 7.0 or higher is required for configuring dependencies and build scripts in Kotlin Multiplatform projects.
  • Functional programming concepts like lambdas are required for leveraging the collection processing APIs in Kotlin Programming by Open Source.
  • JDK 11 or higher is required to support the execution and debugging of JVM-based applications within the course environment.
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Certification Exam

Everything you need to know about the Kotlin Programming certification exam

Exam Details
Exam Name
Kotlin Programming
Format
Multiple choice, labs & case studies
Questions
Duration
Passing Score
Validity
Retake Policy
As this is an educational resource provided by Open Source, there is no formal examination or retake policy; learners may review the course materials at their own pace.
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Kotlin Programming

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Course Curriculum

Structured learning with hands-on labs and real-world scenarios

1
Day 1– Mastering Kotlin Programming Basics
Open Source Kotlin Programming Overview Core variables and data types Functions and control flow logic Efficient ranges and loops Conditional if expressions Handling multi-line strings Dynamic string templates Essential null safety protocols
2
Day 2– Kotlin Programming Object-Oriented Design
Classes and object structures Constructors and property management Inheritance and interface implementation Access and visibility modifiers Efficient data classes Robust sealed classes Singleton object declarations Companion objects usage
3
Day 3– Functional Kotlin Programming Techniques
Powerful lambda expressions Advanced higher-order functions Kotlin collection types Map, filter, and reduce Optimized inline functions Reified type parameter usage Flexible function types Advanced collection operations
4
Day 4– Advanced Kotlin Programming Features
Generics and variance handling Custom type aliases Class delegation patterns Custom operator overloading Custom extension functions Effective scope functions Destructuring declarations logic Code contract implementation
5
Day 5– Kotlin Programming Concurrency Mastery
Introduction to Kotlin coroutines Building robust coroutines Suspending function execution Asynchronous programming workflows Advanced exception handling Testing Kotlin applications Gradle build system integration JVM and compiler fundamentals

What's Included in Your Training

Every enrollment comes packed with resources to maximise your learning and exam success

Career Outcomes

78%

of Kotlin Programming certified professionals report career advancement within 6 months

Salary Impact

+20%

Average salary increase reported after obtaining the Kotlin Programming certification

Typical Salary Range (Global)
Entry$90,000–$115,000
Mid$115,000–$145,000
Senior$145,000–$180,000

*Source: Glassdoor / LinkedIn 2025

Job Roles

6
  • Android Developer
  • Kotlin Backend Developer
  • Mobile Application Developer
  • Software Engineer - Kotlin
  • JVM Application Developer
  • Full-Stack Kotlin Developer

Companies Hiring

5,000+
Google JetBrains Uber Netflix Amazon Accenture Deloitte Square Pinterest NTT Data

and 5,000+ organizations worldwide seeking Kotlin Programming certified professionals

Real Transformations

Course Student Reviews

Real results from IT professionals who trained with Koenig — rated 4.9/5 from 18,400+ verified reviews.

18,400+
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  • ★★★★★

    “Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”

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    Rahul M.

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    AZ-104 Certified ✓ Verified
  • ★★★★★

    “I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”

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    Sarah K.

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  • ★★★★★

    “The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”

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    Business Intelligence Lead

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  • ★★★★★

    “From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”

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  • ★★★★★

    “As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”

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    James T.

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  • ★★★★★

    “SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”

    Aisha N.

    Aisha N.

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    SC-300 Certified ✓ Verified
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    “AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”

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    “DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”

    Mei W.

    Mei W.

    Data Platform Engineer

    DP-600 Certified ✓ Verified
  • ★★★★★

    “Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”

    Carlos R.

    Carlos R.

    Engineering Manager

    AZ-400 Team Training ✓ Verified
  • ★★★★★

    “Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”

    Rahul M.

    Rahul M.

    Azure Administrator

    AZ-104 Certified ✓ Verified
  • ★★★★★

    “I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”

    Sarah K.

    Sarah K.

    CISO, Financial Services

    Enterprise Client ✓ Verified
  • ★★★★★

    “The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”

    Ahmed R.

    Ahmed R.

    Business Intelligence Lead

    PL-300 Certified ✓ Verified
  • ★★★★★

    “From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”

    Priya S.

    Priya S.

    Cloud Solutions Architect

    AZ-305 Expert ✓ Verified
  • ★★★★★

    “As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”

    James T.

    James T.

    Head of L&D, UK Enterprise

    100+ Learners Trained ✓ Verified
  • ★★★★★

    “SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”

    Aisha N.

    Aisha N.

    Security Analyst

    SC-300 Certified ✓ Verified
  • ★★★★★

    “AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”

    David L.

    David L.

    AI Engineer

    AI-102 Certified ✓ Verified
  • ★★★★★

    “DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”

    Mei W.

    Mei W.

    Data Platform Engineer

    DP-600 Certified ✓ Verified
  • ★★★★★

    “Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”

    Carlos R.

    Carlos R.

    Engineering Manager

    AZ-400 Team Training ✓ Verified
  • ★★★★★

    “Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”

    Rahul M.

    Rahul M.

    Azure Administrator

    AZ-104 Certified ✓ Verified
  • ★★★★★

    “I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”

    Sarah K.

    Sarah K.

    CISO, Financial Services

    Enterprise Client ✓ Verified
  • ★★★★★

    “The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”

    Ahmed R.

    Ahmed R.

    Business Intelligence Lead

    PL-300 Certified ✓ Verified
  • ★★★★★

    “Passed AZ-104 on first attempt. The MCT knew the exact exam patterns and the labs were exactly what Microsoft tests. Worth every penny.”

    Rahul M.

    Rahul M.

    Azure Administrator

    AZ-104 Certified ✓ Verified
  • ★★★★★

    “I trained 15 of my team members for SC-200. Koenig's on-site delivery was seamless and all 15 passed within 3 months.”

    Sarah K.

    Sarah K.

    CISO, Financial Services

    Enterprise Client ✓ Verified
  • ★★★★★

    “The 1-on-1 format was a game changer. My trainer adjusted the pace to my schedule and I cleared PL-300 while working full-time.”

    Ahmed R.

    Ahmed R.

    Business Intelligence Lead

    PL-300 Certified ✓ Verified
  • ★★★★★

    “From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”

    Priya S.

    Priya S.

    Cloud Solutions Architect

    AZ-305 Expert ✓ Verified
  • ★★★★★

    “As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”

    James T.

    James T.

    Head of L&D, UK Enterprise

    100+ Learners Trained ✓ Verified
  • ★★★★★

    “SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”

    Aisha N.

    Aisha N.

    Security Analyst

    SC-300 Certified ✓ Verified
  • ★★★★★

    “From AZ-900 to AZ-305 in 6 months. Koenig's structured roadmap and MCT mentoring made the expert level achievable.”

    Priya S.

    Priya S.

    Cloud Solutions Architect

    AZ-305 Expert ✓ Verified
  • ★★★★★

    “As an L&D head I've used 5 training vendors. Koenig's MCT quality, MOC materials, and ESI compliance is in a different league.”

    James T.

    James T.

    Head of L&D, UK Enterprise

    100+ Learners Trained ✓ Verified
  • ★★★★★

    “SC-900 and SC-300 back to back — both cleared first try. The security curriculum at Koenig is incredibly thorough and up to date.”

    Aisha N.

    Aisha N.

    Security Analyst

    SC-300 Certified ✓ Verified
  • ★★★★★

    “AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”

    David L.

    David L.

    AI Engineer

    AI-102 Certified ✓ Verified
  • ★★★★★

    “DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”

    Mei W.

    Mei W.

    Data Platform Engineer

    DP-600 Certified ✓ Verified
  • ★★★★★

    “Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”

    Carlos R.

    Carlos R.

    Engineering Manager

    AZ-400 Team Training ✓ Verified
  • ★★★★★

    “AI-102 was daunting but the trainer broke it down perfectly. Real Azure OpenAI labs made the difference. Highly recommend.”

    David L.

    David L.

    AI Engineer

    AI-102 Certified ✓ Verified
  • ★★★★★

    “DP-600 Fabric certification done in 3 weeks of part-time study. The customised schedule around my timezone was a lifesaver.”

    Mei W.

    Mei W.

    Data Platform Engineer

    DP-600 Certified ✓ Verified
  • ★★★★★

    “Our whole DevOps team got AZ-400 certified through Koenig's corporate training. Smooth logistics and top-tier MCTs throughout.”

    Carlos R.

    Carlos R.

    Engineering Manager

    AZ-400 Team Training ✓ Verified

Frequently Asked Questions

Everything you need to know about the Kotlin Programming training course

Is the Kotlin Programming certification exam fee included in the course price, and what is the cost if separate?
The Kotlin Programming certification exam fee is not included in the course price. As Kotlin is an open-source language maintained by JetBrains, students are encouraged to pursue official Google-recognized Android certifications or JetBrains-endorsed pathways. Costs for these professional assessments vary based on the specific credentialing body selected.
What training formats are available for Kotlin Programming, and is Guaranteed-to-Run scheduling offered?
Kotlin Programming training is offered in live online 1-on-1, public instructor-led, and self-paced formats, all featuring Guaranteed-to-Run scheduling. This ensures every scheduled batch proceeds as planned regardless of enrollment numbers, providing professional certainty for your career development planning while effectively eliminating the risk of last-minute course cancellations.
What is the total duration of the Kotlin Programming course?
The Kotlin Programming course consists of 40 hours of intensive instructor-led training. This duration is designed to cover foundational syntax, advanced object-oriented programming, and practical application development, ensuring students gain comprehensive proficiency in the language.
How long is lab access provided, and what type of environment is used for Kotlin Programming labs?
Lab access for Kotlin Programming is provided for 6 months via cloud-based sandbox environments. These hands-on labs use real development tools like IntelliJ IDEA and Android Studio hosted on secure servers, enabling students to practice coding, debugging, and app deployment without requiring high-end local hardware.
What is the rescheduling and cancellation policy for Kotlin Programming training?
Free rescheduling of Kotlin Programming training is permitted if requested more than 10 days before the start date; changes within 10 days incur a 50% fee of the total purchase amount. Cancellations made over 10 days prior qualify for full refunds, and the same session cannot be rescheduled more than once per Terms of Service.
What is the format and passing criteria for professional Kotlin certification?
Professional certification for Kotlin, such as the Associate Android Developer credential, typically involves a performance-based exam where candidates build a functional application within a set time limit. These exams are proctored and evaluate practical coding skills, debugging capabilities, and adherence to Android development best practices.
How is the validity of Kotlin-related certifications managed?
Certifications recognized in the Kotlin ecosystem, such as those from Google, typically require periodic renewal to ensure developers stay current with the latest language updates and Android SDK changes. Unlike lifetime certifications, these professional credentials reflect the evolving nature of the open-source Kotlin environment.
What post-training support is provided after completing the Kotlin Programming course?
Post-training support includes 6 months of access to recorded sessions, ongoing lab access, and online mentor availability for technical queries. Students also benefit from a satisfaction guarantee, allowing a free course retake if necessary, along with career guidance and exam preparation resources to ensure mastery of Kotlin Programming concepts.
What are the prerequisites or prior experience needed to learn Kotlin Programming effectively?
Learners should have basic familiarity with programming concepts such as variables, loops, functions, and object-oriented principles. Prior experience with Java, C#, or similar languages accelerates learning, though Kotlin can be learned as a first language with additional effort focused on foundational coding logic and syntax.
What is the average salary for Kotlin Programming developers, and how does certification impact career growth?
According to the 2023 Stack Overflow Developer Survey, Kotlin developers command competitive salaries, with average compensation for experienced software engineers in the U.S. ranging from $120,000 to $160,000 annually. Certification enhances employability by validating skills, helping developers secure roles in mobile and backend development.

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