• Expertini Resume Scoring: Our Semantic Matching Algorithm evaluates your CV/Résumé before you apply for this job role.
Poland Jobs Expertini

Senior Kotlin Multiplatform Engineer (#4163) Job Opening In Poland, Poland – Now Hiring N-iX


Job description

Work type: Office/Remote Technical Level: Senior Job Category: Software Development

About the Client: 


Our customer is a leading provider of onboard retail technology and mobile solutions for the travel and retail industries.

The company designs and builds digital products that transform how airlines, trains, and retailers manage in-motion sales, inventory, and customer experiences.


We are forming a dedicated Kotlin Multiplatform (KMP) team to build a new cross-platform mobile application from the ground up — one codebase, two native experiences: iOS and Android.

You’ll join a small, highly skilled Scrum team that owns the full delivery pipeline — from architecture and development to testing, optimization, and release.


Responsibilities:

  • End-to-end development of high-performance mobile applications for both iOS and Android using Kotlin Multiplatform (KMP).

  • Design and implement shared business logic and platform-specific layers to ensure native user experience and optimal performance on each platform.

  • Architect the application using Clean Architecture / MVVM / MVI, ensuring modularity, scalability, and maintainability.

  • Experience with device-to-device communication protocols, especially Bluetooth/BLE.

  • Develop rich, responsive UI layers using Jetpack Compose (Android) and SwiftUI (iOS) where necessary, leveraging Compose Multiplatform when appropriate.

  • Integrate with backend APIs (REST / GraphQL), manage data synchronization, caching, and offline capabilities.

  • Optimize app performance, memory usage, and responsiveness for both platforms.

  • Implement comprehensive testing: unit, integration, and UI tests across platforms.

  • Configure and maintain automated build, test, and release pipelines (CI/CD) for Android and iOS using tools like GitHub Actions, Bitrise, or Fastlane.

  • Participate in code reviews, technical discussions, and agile ceremonies, ensuring continuous improvement and delivery excellence.

  • Collaborate closely with backend engineers, designers, and QA to deliver polished, high-quality user experiences.
  • Must-Have Skills:

  • 6+ years of experience in mobile application development.

  • At least 2–3 years of proven hands-on experience delivering production apps using Kotlin Multiplatform (KMP) for both Android and iOS.

  • Deep expertise in Kotlin, including coroutines, flows, multiplatform libraries, and shared data management.

  • Experience with Bluetooth/BLE.

  • Strong understanding of platform interoperability — bridging shared Kotlin code with Swift / SwiftUI on iOS and Jetpack Compose on Android.

  • Experience developing and optimizing native UI components for each platform.

  • Solid understanding of mobile performance optimization (memory management, rendering, startup time, network performance).

  • Experience integrating RESTful APIs or GraphQL using Ktor Client or Retrofit with offline caching (SQLDelight / Room).

  • Experience with CI/CD for mobile (Bitrise, GitHub Actions, Fastlane, Jenkins) and mobile release processes (Google Play, App Store).

  • Strong Git workflow and experience with agile development environments (Scrum / Kanban).

  • Fluent in English, both spoken and written.

  • Clear communication skills: being able to explain complex technical issues to non-technical stakeholders.

  • Experience in offline-first architectures, synchronization logic, and push notifications.
  • Would be a plus:

  • Experience of mesh networking protocols and device-to-device communication.

  • We offer*:

  • Flexible working format - remote, office-based or flexible

  • A competitive salary and good compensation package

  • Personalized career growth

  • Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)

  • Active tech communities with regular knowledge sharing

  • Education reimbursement

  • Memorable anniversary presents

  • Corporate events and team buildings

  • Other location-specific benefits
  • *not applicable for freelancers

    Required Skill Profession

    Computer Occupations


    • Job Details

    Related Jobs

    hmmh Poland hiring Mobile Developer (Swift + Kotlin Multiplatform) Job in Wrocław, Lower Silesian Voivodeship, Poland
    hmmh Poland
    Wrocław, Lower Silesian Voivodeship, Poland
    Mobica hiring Senior Kotlin Engineer Job in Warsaw, Masovian Voivodeship, Poland
    Mobica
    Warsaw, Masovian Voivodeship, Poland
    Antal Sp. z o.o. hiring Senior Software Engineer Kotlin Job in Wrocław, Lower Silesian Voivodeship, Poland
    Antal Sp. z o.o.
    Wrocław, Lower Silesian Voivodeship, Poland
    SCALO hiring Senior Software Engineer (Kotlin/Java) Job in Wrocław, Lower Silesian Voivodeship, Poland
    SCALO
    Wrocław, Lower Silesian Voivodeship, Poland
    Mobica hiring Senior Kotlin Developer Job in Warsaw, Masovian Voivodeship, Poland
    Mobica
    Warsaw, Masovian Voivodeship, Poland
    SCALO hiring Senior Fullstack Engineer (React & Java/Kotlin) Job in Kraków, Lesser Poland Voivodeship, Poland
    SCALO
    Kraków, Lesser Poland Voivodeship, Poland
    SEBA Bank hiring Senior Backend Engineer in Java/Kotlin Job in Wrocław, Lower Silesian Voivodeship, Poland
    SEBA Bank
    Wrocław, Lower Silesian Voivodeship, Poland
    Simple Machines hiring Senior Full Stack Engineer - JVM, Kotlin Job in Warsaw, Masovian Voivodeship, Poland
    Simple Machines
    Warsaw, Masovian Voivodeship, Poland
    EY hiring Senior Kotlin Backend Developer Job in Katowice, Silesian Voivodeship, Poland
    EY
    Katowice, Silesian Voivodeship, Poland
    SCALO hiring Kotlin Developer Job in Wrocław, Lower Silesian Voivodeship, Poland
    SCALO
    Wrocław, Lower Silesian Voivodeship, Poland
    Team Quest hiring Senior Algorithm Developer (Java/Kotlin) Job in Toruń, Kuyavian-Pomeranian Voivodeship, Poland
    Team Quest
    Toruń, Kuyavian-Pomeranian Voivodeship, Poland
    Team Quest hiring Senior Algorithm Developer (Java/Kotlin) Job in Poznań, Greater Poland Voivodeship, Poland
    Team Quest
    Poznań, Greater Poland Voivodeship, Poland
    Team Quest hiring Senior Algorithm Developer (Java/Kotlin) Job in Gdynia, Pomeranian Voivodeship, Poland
    Team Quest
    Gdynia, Pomeranian Voivodeship, Poland
    Team Quest hiring Senior Algorithm Developer (Java/Kotlin) Job in Chorzow, Silesian Voivodeship, Poland
    Team Quest
    Chorzow, Silesian Voivodeship, Poland
    Team Quest hiring Senior Algorithm Developer (Java/Kotlin) Job in Szczecin, West Pomeranian Voivodeship, Poland
    Team Quest
    Szczecin, West Pomeranian Voivodeship, Poland
    Team Quest hiring Senior Algorithm Developer (Java/Kotlin) Job in Wrocław, Lower Silesian Voivodeship, Poland
    Team Quest
    Wrocław, Lower Silesian Voivodeship, Poland
    Team Quest hiring Senior Algorithm Developer (Java/Kotlin) Job in Bydgoszcz, Kuyavian-Pomeranian Voivodeship, Poland
    Team Quest
    Bydgoszcz, Kuyavian-Pomeranian Voivodeship, Poland
    Team Quest hiring Senior Algorithm Developer (Java/Kotlin) Job in Krakow, Lesser Poland Voivodeship, Poland
    Team Quest
    Krakow, Lesser Poland Voivodeship, Poland
    Intive hiring Senior Software Developer (Java/Kotlin) Job in poland, poland, Poland
    Intive
    poland, poland, Poland
    Team Quest hiring Senior Algorithm Developer (Java/Kotlin) Job in Katowice, Silesian Voivodeship, Poland
    Team Quest
    Katowice, Silesian Voivodeship, Poland
    Team Quest hiring Senior Algorithm Developer (Java/Kotlin) Job in Zielona Gora, Lubusz Voivodeship, Poland
    Team Quest
    Zielona Gora, Lubusz Voivodeship, Poland
    Be in IT hiring Senior Android Kotlin Developer (zdalnie) Job in Warsaw, Masovian Voivodeship, Poland
    Be in IT
    Warsaw, Masovian Voivodeship, Poland
    Andersen hiring QA Automation Engineer (Kotlin+Swift) Job in Warsaw, Masovian Voivodeship, Poland
    Andersen
    Warsaw, Masovian Voivodeship, Poland
    Software Mind hiring [VLO] Senior Back-end Engineer (Java/Kotlin + AWS) Job in Kraków, Lesser Poland Voivodeship, Poland
    Software Mind
    Kraków, Lesser Poland Voivodeship, Poland
    Reply Group hiring SENIOR BACKEND DEVELOPER - KOTLIN / SPRING BOOT Job in Katowice, Silesian Voivodeship, Poland
    Reply Group
    Katowice, Silesian Voivodeship, Poland
    Groupe SII hiring Java / Kotlin Developer Job in Wrocław, Lower Silesian Voivodeship, Poland
    Groupe SII
    Wrocław, Lower Silesian Voivodeship, Poland
    IT Leasing Team Sp. z o.o. hiring Kotlin Developer (+ Python) Job in Warsaw, Masovian Voivodeship, Poland
    IT Leasing Team Sp. z o.o.
    Warsaw, Masovian Voivodeship, Poland
    SCALO Sp. z o.o. hiring Java Developer (Kotlin) Job in Kraków, Lesser Poland Voivodeship, Poland
    SCALO Sp. z o.o.
    Kraków, Lesser Poland Voivodeship, Poland
    SCALO hiring Java Developer (Kotlin) Job in Kraków, Lesser Poland Voivodeship, Poland
    SCALO
    Kraków, Lesser Poland Voivodeship, Poland

    Unlock Your Senior Kotlin Potential: Insight & Career Growth Guide


    Real-time Senior Kotlin Jobs Trends (Graphical Representation)

    Explore profound insights with Expertini's real-time, in-depth analysis, showcased through the graph here. Uncover the dynamic job market trends for Senior Kotlin in Poland, Poland, highlighting market share and opportunities for professionals in Senior Kotlin roles.

    5172 Jobs in Poland
    5172
    689 Jobs in Poland
    689
    Download Senior Kotlin Jobs Trends in Poland and Poland

    Are You Looking for Senior Kotlin Multiplatform Engineer (#4163) Job?

    Great news! is currently hiring and seeking a Senior Kotlin Multiplatform Engineer (#4163) to join their team. Feel free to download the job details.

    Wait no longer! Are you also interested in exploring similar jobs? Search now: .

    The Work Culture

    An organization's rules and standards set how people should be treated in the office and how different situations should be handled. The work culture at N-iX adheres to the cultural norms as outlined by Expertini.

    The fundamental ethical values are:

    1. Independence

    2. Loyalty

    3. Impartiapty

    4. Integrity

    5. Accountabipty

    6. Respect for human rights

    7. Obeying Poland laws and regulations

    What Is the Average Salary Range for Senior Kotlin Multiplatform Engineer (#4163) Positions?

    The average salary range for a varies, but the pay scale is rated "Standard" in Poland. Salary levels may vary depending on your industry, experience, and skills. It's essential to research and negotiate effectively. We advise reading the full job specification before proceeding with the application to understand the salary package.

    What Are the Key Qualifications for Senior Kotlin Multiplatform Engineer (#4163)?

    Key qualifications for Senior Kotlin Multiplatform Engineer (#4163) typically include Computer Occupations and a list of qualifications and expertise as mentioned in the job specification. The generic skills are mostly outlined by the . Be sure to check the specific job listing for detailed requirements and qualifications.

    How Can I Improve My Chances of Getting Hired for Senior Kotlin Multiplatform Engineer (#4163)?

    To improve your chances of getting hired for Senior Kotlin Multiplatform Engineer (#4163), consider enhancing your skills. Check your CV/Résumé Score with our free Tool. We have an in-built Resume Scoring tool that gives you the matching score for each job based on your CV/Résumé once it is uploaded. This can help you align your CV/Résumé according to the job requirements and enhance your skills if needed.

    Interview Tips for Senior Kotlin Multiplatform Engineer (#4163) Job Success

    N-iX interview tips for Senior Kotlin Multiplatform Engineer (#4163)

    Here are some tips to help you prepare for and ace your Senior Kotlin Multiplatform Engineer (#4163) job interview:

    Before the Interview:

    Research: Learn about the N-iX's mission, values, products, and the specific job requirements and get further information about

    Other Openings

    Practice: Prepare answers to common interview questions and rehearse using the STAR method (Situation, Task, Action, Result) to showcase your skills and experiences.

    Dress Professionally: Choose attire appropriate for the company culture.

    Prepare Questions: Show your interest by having thoughtful questions for the interviewer.

    Plan Your Commute: Allow ample time to arrive on time and avoid feeling rushed.

    During the Interview:

    Be Punctual: Arrive on time to demonstrate professionalism and respect.

    Make a Great First Impression: Greet the interviewer with a handshake, smile, and eye contact.

    Confidence and Enthusiasm: Project a positive attitude and show your genuine interest in the opportunity.

    Answer Thoughtfully: Listen carefully, take a moment to formulate clear and concise responses. Highlight relevant skills and experiences using the STAR method.

    Ask Prepared Questions: Demonstrate curiosity and engagement with the role and company.

    Follow Up: Send a thank-you email to the interviewer within 24 hours.

    Additional Tips:

    Be Yourself: Let your personality shine through while maintaining professionalism.

    Be Honest: Don't exaggerate your skills or experience.

    Be Positive: Focus on your strengths and accomplishments.

    Body Language: Maintain good posture, avoid fidgeting, and make eye contact.

    Turn Off Phone: Avoid distractions during the interview.

    Final Thought:

    To prepare for your Senior Kotlin Multiplatform Engineer (#4163) interview at N-iX, research the company, understand the job requirements, and practice common interview questions.

    Highlight your leadership skills, achievements, and strategic thinking abilities. Be prepared to discuss your experience with HR, including your approach to meeting targets as a team player. Additionally, review the N-iX's products or services and be prepared to discuss how you can contribute to their success.

    By following these tips, you can increase your chances of making a positive impression and landing the job!

    How to Set Up Job Alerts for Senior Kotlin Multiplatform Engineer (#4163) Positions

    Setting up job alerts for Senior Kotlin Multiplatform Engineer (#4163) is easy with Poland Jobs Expertini. Simply visit our job alerts page here, enter your preferred job title and location, and choose how often you want to receive notifications. You'll get the latest job openings sent directly to your email for FREE!