Hire the best Kotlin Developers in Novi Sad, RS

Check out Kotlin Developers in Novi Sad, RS with the skills you need for your next job.
  • $50 hourly
    I am a highly skilled Android Mobile, Android TV and AOSP expert with a strong background in leading teams, managing projects, and delivering high-performance Android solutions. With 12+ years of experience, I specialize in: ✅ Android App & System Development – Building and optimizing apps for mobile devices, Android TV and embedded Android solutions. ✅ AOSP Development – Customizing and optimizing Android source code, modifying system components, and integrating new features into Android frameworks. ✅ Team Leadership & Management – Leading Android teams, setting goals, managing sprints, and ensuring timely project delivery. ✅ Android System Customization – Modifying system UI, freeform windows, boot processes, and security mechanisms. ✅ Platform Development (AmLogic, Rockchip, Qualcomm, etc.) – Working on embedded Android platforms, STBs, and custom ROMs. ✅ CI/CD & Automation – Setting up build pipelines, automated testing, and release workflows for smooth deployments. 💡 Why Work With Me? 🔹 Proven track record of leading teams and delivering high-quality Android projects. 🔹 Strong problem-solving skills in debugging, performance optimization, and low-level Android development. 🔹 Experience in managing cross-functional teams, collaborating with designers, and aligning development with business goals. 🔹 Passionate about innovation, efficiency, and creating scalable Android solutions. 📩 Let’s build the future of Android together! Contact me to discuss your project.
    Featured Skill Kotlin
    Android App Development
    AOSP
    Bash
    Unity
    Java
    Unix
    Android
    C++
    C#
    Python
    Windows Forms
    Android SDK
    Android NDK
    C
  • $115 hourly
    With three decades of experience in IT systems - including 20 years focused on backend engineering for high-availability, high-load applications - I specialize in designing, implementing and optimizing scalable, fault-tolerant architectures. My work spans real-time data processing, microservices modernization, and cloud-based distributed systems, with an emphasis on clean, maintainable, and rigorously tested solutions. Core Technical Expertise: Languages & Frameworks: - Java, Kotlin, Groovy - Spring Boot, Dropwizard, Micronaut, Quarkus Databases & Storage: - Relational: PostgreSQL, MySQL - NoSQL: MongoDB, DynamoDB - In-Memory/Caching: Redis, Hazelcast Cloud & Infrastructure: - AWS (EC2, S3, RDS, EKS, ECS, Lambda, SQS, SNS) - Containerization & Orchestration: Docker, Kubernetes, Istio Messaging & Event-Driven Systems: Kafka, RabbitMQ, AWS SQS/SNS Testing & Reliability: - Test-Driven Development (TDD) - Unit, Integration, Performance, and Stress Testing (JMeter, Gatling, custom tooling) Selected Career Highlights: Real-Time Social Media Analytics Platform (2016 US Election): Designed and implemented an AWS-based system processing 10M+ tweets/day with sub-second latency, handling bursts of 1,000+ events/sec without data loss. Upwork Core Services Modernization: Led migration from a monolithic legacy system to set of microservices, reducing offer creation time from 10-15s to less than 1s. Improved system throughput 10x while reducing maintenance overhead. Implemented comprehensive test suites (unit, integration, load) to ensure stability. Development Philosophy: Strong emphasis on testing and maintainability: Every system I build incorporates TDD, performance benchmarking, and failure simulation to ensure robustness.
    Featured Skill Kotlin
    MongoDB
    Amazon DynamoDB
    Apache Kafka
    MySQL
    PostgreSQL
    Micronaut
    Dropwizard
    Spring Boot
    Amazon Web Services
    NoSQL Database
    Relational Database
    RESTful Architecture
    Apache Groovy
    Java
  • $50 hourly
    Experienced technical lead and solutions architect with a diverse skill set in developing and delivering innovative software solutions. Demonstrated proficiency in designing and developing applications, automating tests, and implementing architecture design for software systems. Strong technical and leadership abilities, including team mentoring, resource management, and stakeholder communication. Proficient in Java, Kotlin, Python and blockchain technologies, and has experience in managing development teams and improving technological processes. Consistently delivering results and achieving SLAs, with a focus on efficiency and quality.
    Featured Skill Kotlin
    Node.js
    Python Numpy FastAI
    PostgreSQL Programming
    API Development
    Spring Boot
    pandas
    Django
    API
    TypeScript
    Python
    Java
    Scala
    MongoDB
  • $59 hourly
    I'm a mobile (React Native) developer. I've been working with JavaScript/TypeScript more than 3 years. I have strong knowledge of React Native, TypeScript, JavaScript and good knowledge of Kotlin. * Strong knowledge of React Native, React, TypeScript, JavaScript, CSS, HTML * Good knowledge of Kotlin, Jetpack Compose, Android API * Worked with all major libraries such as Redux, MobX, React Navigation, Styled components, etc * Experience in integrating external tools and sdk like Analytics, Maps, etc
    Featured Skill Kotlin
    HTML
    Redux
    Mobile App
    CSS
    Mobx
    React
    React Native
    TypeScript
    JavaScript
  • $30 hourly
    Experienced Android Developer with over 10 years of expertise in building high-quality mobile applications. Skilled in Kotlin and Java, I have successfully completed 6+ projects, leveraging my strong knowledge of Android SDK, Android Studio, and various architectural patterns like MVP and MVVM. I am currently expanding my horizons by diving into Flutter and Dart, exploring the realm of cross-platform app development. Proficient in working with SQLite and Room for database integration, I also possess hands-on experience with Firebase, including Crashlytics and App Distribution. With a solid understanding of REST API integration and data formats like JSON, I excel in creating robust mobile solutions. Additionally, I have leveraged RxJava, Dagger, and Git to enhance application performance and maintain version control. My goal is to deliver exceptional user experiences through intuitive interfaces and efficient code. Let's collaborate to transform your ideas into innovative Android applications.
    Featured Skill Kotlin
    RxJava
    Model View ViewModel
    Model View Presenter
    JSON
    Git
    Room
    RESTful API
    Dagger 2
    Dart
    SQLite
    Flutter
    Java
    Android App Development
    Firebase
  • $40 hourly
    Highly skilled Android developer with 11+ years of experience building native apps. I'm a strong communicator who listens closely to client needs and adapts seamlessly to project requirements. I leverage both Java and Kotlin, utilizing Jetpack Compose for modern UIs and libraries like Room, Retrofit, Dagger, Coil, Glide for efficient development. I also work with Java and XML layout based projects. My expertise extends to Clean Architecture and design patterns like MVVM and MVI. I'm a dedicated team player, seeing projects through from start to finish and ensuring client satisfaction.
    Featured Skill Kotlin
    Figma
    Android
    Android Studio
    Google APIs
    Google Maps
    Retrofit
    Android Debug Bridge
    Android SDK
    Dependency Injection Framework
    Android Room Persistence
    Android UI Design
    Clean Architecture
    JetPack
    Android App Development
  • $12 hourly
    I easily find common ground with people and avoid conflicts. Team leads give high ratings to my hard skills and learning ability, and very high ratings to my soft skills. I'm an advocate for code testing. In the projects where tests were written, the average crash-free users rate is 98.1%. Outside of my professional activities, I'm passionate about music and sports, interested in history, and constantly working on self-improvement. I'm focused on continuous professional growth. I'm also working on improving my English from B2 to C1 and learning Serbian. Technology stack: - Kotlin - Coroutines + Flow - Rx - MVVM, MVI, MVC, MVP - Hilt, Dagger2 - Multi-module - Retrofit, GraphQL, WebSockets - Proto + GRPC - Paging - Room, SQLite - Data Store, Shared Prefs - Nav component, Cicerone - Motion layout - Shimmer - ExoPlayer - View binding - Compose - Tests(Mockito, JUnit, Robolectric, Espresso) - Google play(Ads, Billing, Maps) - Firebase (Crashlytics, Cloud Messaging) - CI/CD (GitHub, GitLab, Fastlane, App distribution) - Amplitude analytics - Git lab - Git hub - Bit bucket - Jira - Trello - Miro - Bordio - Confluense Books: - Kotlin, android - Head first - Android Programming - Big Nerd Ranch - Clean arch, Clean code, Perfect Programmer(in process) - Uncle Bob - The joy of kotlin - Pierre-Yves Saumont - Kotlin in action - Svetlana Isakova, Dmitry Jemerov - Code complete - Macconel
    Featured Skill Kotlin
    Android SDK
    Android App Development
    Dependency Injection Framework
    Material UI
    Coroutine
    Room
    Android
  • $25 hourly
    I'm a versatile developer with extensive experience in process automation, solution management, and cutting-edge AI/ML applications. My expertise spans from traditional DevOps to state-of-the-art neural network implementations. Key Skills and Experience: • DevOps & Automation: - TeamCity Kotlin DSL - Bash, PowerShell - Cross-platform: Windows, Linux, Mac, Android, iOS • Programming: - Python (Django, REST API) - AI/ML libraries and frameworks • AI/ML Projects: - Natural Language Processing (NLP): • Intelligent email management using local LLaMA models and few-shot prompting • Text summarization and contextual example generation for language learning - Speech & Text: • Text-to-Speech (TTS) via OpenAI API • Speech-to-Text (STT) using Whisper/Faster-Whisper - Computer Vision: • Image-to-Text conversion using local LLAVA models and APIs - Video Processing: • Video generation and dubbing • Advanced AI Implementations: - GPU instance management for fine-tuned model deployment - Exploring Retrieval-Augmented Generation (RAG) and vector databases Ready to bring my expertise to your project.
    Featured Skill Kotlin
    Documentum
    API Integration
    LLM Prompt Engineering
    Prompt Engineering
    Gradle
    CMake
    Git
    JetBrains TeamCity
    Bash
    Scripting
    Python
  • $16 hourly
    I am an Android developer with seven years of experience working for both outsourcing companies as well as companies with their own, successful, world-wide projects. Used to working in multinational teams. Feel free to ping me and talk about potential projects. - Knows Java, Kotlin, RX, Android SDK - Communicates well and responds quickly
    Featured Skill Kotlin
    AI Text-to-Speech
    Bluetooth LE
    Android SDK
    Android
    Room
    SQL
    Unit Testing
    Retrofit
    Java
    RxJava
    MQTT
    App Development
    Mobile App Development
    Android App Development
  • Want to browse more freelancers?
    Sign up

How hiring on Upwork works

1. Post a job

Tell us what you need. Provide as many details as possible, but don’t worry about getting it perfect.

2. Talent comes to you

Get qualified proposals within 24 hours, and meet the candidates you’re excited about. Hire as soon as you’re ready.

3. Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

4. Payment simplified

Receive invoices and make payments through Upwork. Only pay for work you authorize.

Trusted by

How do I hire a Kotlin Developer near Novi Sad, on Upwork?

You can hire a Kotlin Developer near Novi Sad, on Upwork in four simple steps:

  • Create a job post tailored to your Kotlin Developer project scope. We’ll walk you through the process step by step.
  • Browse top Kotlin Developer talent on Upwork and invite them to your project.
  • Once the proposals start flowing in, create a shortlist of top Kotlin Developer profiles and interview.
  • Hire the right Kotlin Developer for your project from Upwork, the world’s largest work marketplace.

At Upwork, we believe talent staffing should be easy.

How much does it cost to hire a Kotlin Developer?

Rates charged by Kotlin Developers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.

Why hire a Kotlin Developer near Novi Sad, on Upwork?

As the world’s work marketplace, we connect highly-skilled freelance Kotlin Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream Kotlin Developer team you need to succeed.

Can I hire a Kotlin Developer near Novi Sad, within 24 hours on Upwork?

Depending on availability and the quality of your job post, it’s entirely possible to sign up for Upwork and receive Kotlin Developer proposals within 24 hours of posting a job description.