Hire the best Kotlin Developers in Colorado

Check out Kotlin Developers in Colorado with the skills you need for your next job.

Get started

$150 hourly
Bradley P.
- 4.9/5
- (18 jobs)
I am a highly skilled and experienced web and mobile full stack developer with a passion for creating innovative and user-friendly applications. With over 10 years of industry experience, I have successfully delivered a wide range of projects, from simple websites to complex web and mobile applications. Mobile Development: - Experience in building native mobile applications for iOS and Android using technologies like Swift, Kotlin, or React Native. - Knowledge of mobile app development frameworks, libraries, and tools, including Xcode and Android Studio. Frontend Development: - Proficient in HTML5, CSS3, JavaScript, and modern frontend frameworks such as React and Angular. - Experience in developing responsive web applications that work seamlessly across different devices and browsers. - Strong understanding of UI/UX principles to create visually appealing and intuitive user interfaces. Backend Development: - Expertise in server-side programming languages like Node.js, Python, or Ruby. - Familiarity with backend frameworks such as Express, Django, or Ruby on Rails. - Database design and implementation using SQL (e.g., MySQL, PostgreSQL) or NoSQL (e.g., MongoDB, Firebase). Additional Skills: - RESTful API development and integration. - Version control systems (e.g., Git) and collaborative development workflows. - Knowledge of cloud platforms like AWS, Azure, or Google Cloud for deploying and scaling applications. - Testing and debugging techniques to ensure high-quality code and robust applications. - Familiarity with Agile methodologies and project management tools. Throughout my career, I have been recognized for my strong problem-solving abilities, attention to detail, and commitment to delivering projects on time and within budget. I thrive in collaborative environments and enjoy working closely with cross-functional teams to translate business requirements into technical solutions. If you're looking for a dedicated and versatile full stack developer who can bring your ideas to life, I would love to discuss how I can contribute to your project. Feel free to reach out to me to discuss your requirements in detail.

Kotlin
Mobile App Design
iOS Development
Svelte
Java
React Native
Flutter
Mobile App Development
AWS Cloud9
Push Notifications
Android App Development
Swift
MongoDB
Objective-C
AWS Lambda
Node.js
$100 hourly
Tyler K.
- 5.0/5
- (1 job)
Engineering leader and architect with 14+ years of experience specializing in distributed systems, platform engineering, and technical leadership. I help organizations modernize their infrastructure, implement microservices architectures, and build high-performing engineering teams. Published author on microservices and contract testing. Key Expertise: - Platform Engineering & Developer Experience - Microservices Architecture & Implementation - Cloud-Native Technologies (AWS, Kubernetes, Docker) - Engineering Team Leadership & Culture Building - Distributed Systems Design - API Design & Contract Testing - Legacy System Modernization - Technical Strategy & Architecture Planning What I Can Do For You: - Technical Advisory & Architecture Review - Platform Engineering Strategy - Microservices Migration Planning - Developer Experience Optimization - Engineering Process Improvement - Team Structure & Organization Design - Technical Documentation & Training - Contract Testing Implementation Professional Background: Currently serving as Director of Engineering, where I established and lead the Platform Engineering department comprising five specialized teams. Previously held senior roles in Biotech, Industrial Robotics, and National Defense, giving me diverse industry experience. Notable Achievements - Author of "Microservices In Real Life: Contract Testing" - Built and scaled Platform Engineering teams from scratch - Successfully led multiple organizations through monolith-to-microservices transitions - Implemented enterprise-wide observability solutions - Patent co-inventor for augmented welding vision system - M.S. in Systems Engineering & B.S. in Computer Engineering from Colorado State University

Kotlin
AI Development
Software Architecture
Microservice
.NET Framework
C#
Java
Python
$30 hourly
Marc N.
- 5.0/5
- (6 jobs)
Zazen Technologies specializes in developing highly sophisticated Mobile applications and Websites for Entrepreneurs and Small to Mid size companies. Our offices are in San Francisco and Denver! We also work with Angel Investors and VCs, along with offering our clients mentoring on how to develop and support a Technology Startup!! We have extensive experience with: Native iOS & Android app development Backend Development & architecture Crypto Currencies NFTs Blockchain Responsive web design & development Cross-platform development using frameworks like Phonegap and Xamarin eCommerce / FinTech Food Delivery Service Delivery Dating and Event Planning Social Media Health and Fitness Product design involves a UI/ UX designer laying out all the screens required for the platform with wireframes. Once those wireframes’ flows are approved, the app’s screens are designed, in part by taking the visual identity established in Platform Branding and using it as a jumping off point to establish the app’s look and feel. High-fidelity mocks are passed from our designers to engineers who code these frontend screens into existence. At the same time, backend engineers are building the behind-the-scenes pipes and engines that make your platform tick and operate effectively. Testing is heavily integrated into our Product Development process. We test the stability of the code as well as its ability to scale with platform growth. Testing is also incorporated to account for various phone devices and environments. Support and maintenance help is also available for clients once products are released. Clients owned 100% of the code once the product is completed. Read more about our engineering process iOS App Development Our rich technical expertise across different industry verticals helps you develop business-centric iOS apps that match your vision and engage your end-users. Our iOS application team is also specialized with the latest and most intuitive language SwiftUI to create interactive and scalable apps across all Apple devices (iPhone, iPad, macOS, WearableOS & others). Android App Development Unlock the potential of your business with our best-in-class Android app development services and advanced solutions. We are an award-winning mobile app development company that helps thriving enterprises bridge the gap between ideas and reality through custom and cloud-ready mobility solutions.At Zazen Technologies, we develop distinctive mobile apps that ensure a smooth and user-friendly interface for the end-users.

Kotlin
Blockchain Development
LAMP Stack
Blockchain
Cryptocurrency
WordPress
AWS Cloud9
MEAN Stack
iOS Development
Android
PHP
Java
iOS
MySQL
Swift
$60 hourly
Clayton J.
- 0.0/5
- (0 jobs)
I’m a developer experienced in building Android and iOS apps for small and medium-sized businesses. Whether you’re trying to win work, list your services, or create a new online store, I can help. Knows Swift, Kotlin, JavaScript and Firebase. Full project management from start to finish Regular communication is important to me, so let’s keep in touch.

Kotlin
API
Google Play
App Store
App Design
REST API
JSON
SwiftUI
Swift
Web Application
iOS Development
App Development
Android App Development
Mobile App
Artificial Intelligence
$150 hourly
Michael L.
- 5.0/5
- (23 jobs)
Need a high-level software architect who can build it, fix it, scale it; and make it beautiful? That’s what I do. I'm a senior full-stack developer and systems architect with 15+ years of experience leading projects from idea to deployment. I’ve helped startups launch, enterprises scale, and legacy platforms evolve, with code that lasts and UX that feels good to use. 💡 Past Projects Include: - A $500M real-time fintech trading system (web + mobile) - A $100M real estate CRM platform from scratch - AI-integrated cybersecurity systems for live threat response - High-performance cross-platform mobile apps using Flutter, React Native, Swift, Kotlin 🛠 What I Bring: - Architecture & full-stack development (Ruby, Node.js, Python, Rails, React, Vue, Swift, etc.) - Mobile-first and cloud-native builds (AWS, GCP, Heroku, Docker/K8s) - API design, DevOps pipelines, performance tuning, and scaling - Excellent communication, weekly deliverables, zero micromanagement needed ✅ Clients hire me when: - They need to launch something ambitious - Their legacy codebase is a mess and they need a lifeline - They want someone who thinks like an engineer, a strategist, and a founder If you're looking for top-tier technical leadership, hands-on build support, and someone you can trust to handle the whole stack, let’s talk. → Message me and tell me what you're building. I’ll tell you how I’d make it better.

Kotlin
UX & UI
CI/CD
MVC Framework
API
Software Architecture & Design
Software Testing
Database Development
jQuery
Mobile App Development
Ruby
Swift
PHP
JavaScript
$150 hourly
Jonathan M.
- 4.8/5
- (3 jobs)
Hey there, I’m Jonathan. I’m a software engineer on a high-performing tech team at one of America’s largest communication companies, building digital experiences for tens of millions of consumers. Our customers rate our app at 4.5 stars (approaching 200,000 reviews), higher than any of our competitors. Our team is leading the charge to turn an old corporate company into a modern tech powerhouse. Revolutionizing a 100,000 person organization is no small task and can’t be accomplished overnight, but we’re confident that it can be done, and that we’re the team to do it. I have experience in Business Intelligence, creating custom analytics solutions to collect billions of events to power strategic reports and insight to my enterprise’s executive team, including the C suite. My specialty is C# and Xamarin, with a strong iOS streak. I’ve built backend web services in ASP.NET, and first wet my feet in tech building WordPress and Angular websites when I was in high school. I have experience in Angular, Node, and vanilla JS development. I’m an architectural purist, I believe in doing things right the first time. I don’t take the cheap route. I’m strong in theoretical and practical object orientation. Separation of concerns, inversion of control, a single source of truth, abstraction, and a clean service stack are very important to me. I’m vocal about the way I think a solution should be built. I’m always interested in hearing about new projects, so please hit me up if you think we might be able to work together. My LinkedIn URL is jmccormick583.

Kotlin
.NET Core
WordPress
Android App Development
iOS Development
Swift
iOS
Xamarin
C#
JavaScript
Android
$50 hourly
Jordan D.
- 0.0/5
- (0 jobs)
I've worked for major brands including Turo, Chick-fil-A, and IHG. I have over 8 years of professional Android development, using both Java and Kotlin. I have experience in Android, Kotlin, MVVM, Kotlin Multiplatform, Flutter, Spring. I've built full stack applications using Kotlin, Spring and Flutter.

Kotlin
Unity
C#
Dart
Swift
Flutter
Android
Java
$55 hourly
Joris R.
- 0.0/5
- (0 jobs)
I am Software Engineer with 9 years professional experience in Mobile Development with a wide range of skills making me a versatile professional and source of ideas, and methodologies to solve problems in a quick and efficient way. I started my career as a Web Developer(ASP.NET, C#), but quite quickly I decided to learn mobile app development to rapidly growing mobile marketing. I have experience in developing and designing software for both platforms(Android and iOS) using Swift, Java, React Native, Flutter Ionic, Xamarin. My main goal always being to code with efficiency and meet high standards, while taking in consideration the user experience and ergonomics. Mobile App Development ✔ Native Swift, Java/Kotlin, Xcode, Android Studio ✔ Cross-platform: React Native, Flutter, Xamarin ✔ Backend Dev: .NET.core/ASP.NET, Java, Python ✔ Jira, Asana, Trello, Github I'm well-organized, responsible and enthusiastic person. Plus I am a good team player and this skill helps me to cope up with new environment and technology quickly. I give my best in everything that I do. Looking forward to hearing from you. Thank you!

Kotlin
React Native
Firebase
Dart
Objective-C
Java
Swift
Flutter
SQLite
$43 hourly
Saul Bernardo P.
- 0.0/5
- (0 jobs)
As a Web and Mobile developer, I design and deploy scalable applications using Android Studio and xCode, and IDEs for web applications. I enjoy architecting efficient and resilient projects for web and mobile applications.

Kotlin
Next.js
React
Node.js
SwiftUI
Swift
Coroutine
iOS
Android
$200 hourly
Connor V.
- 0.0/5
- (0 jobs)
5 years of Software Engineering experience in Big Tech. Specializing in building Big Data Processing (ETL) systems and high performance APIs.

Kotlin
Amazon Web Services
Big Data
Scala
Data Warehousing & ETL Software
Apache Spark
Java
Artificial Intelligence
Want to browse more freelancers?
Sign up