Kotlin Language

Kotlin Language Developer Jobs

39 jobs found

Today

Android Developer

Peraton San Antonio, TX

San Antonio, TX

Today

$86k - $138k/yr Full time Android Android Developer Android Sdk

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Job Description

Peraton is seeking an Android Engineer to design, build, and continuously improve high-quality Android experiences. This Android-first role focuses on Kotlin and modern Android frameworks, while partnering closely with product, design, backend, quality, and iOS peers to deliver reliable customer value. You will also bring enough practical iOS experience to collaborate on platform tradeoffs and shared mobile standards.

Role Summary

In this position, you will take ownership of complex Android features across discovery, implementation, and post-release monitoring. You will help set the technical direction for Kotlin and key Android technologies, produce clear technical designs that account for risks and dependencies, and support an engineering culture centered on quality, observability, and release confidence.

Responsibilities

Own the design and implementation of complex Android features from discovery through monitoring after release.
Set and evolve technical direction for Kotlin, Jetpack Compose, app architecture, modularization, networking, persistence, and dependency management.
Write clear technical designs and surface tradeoffs, risks, dependencies, and migration plans before implementation.
Build accessible, responsive interfaces in partnership with product design and research.
Improve automated testing across unit, integration, UI, and end-to-end layers to make quality an everyday engineering practice.
Strengthen observability, performance, crash health, security, privacy, and release confidence for the Android app.
Partner with backend and platform teams on API contracts, offline behavior, authentication, experimentation, and analytics.
Collaborate with iOS engineers on shared product behavior and mobile standards while respecting platform-native conventions.
Review code thoughtfully and mentor engineers, improving technical decisions without creating delivery bottlenecks.
Participate in planning, estimation, incident response, and continuous improvement of the mobile delivery process.

Requirements

5 years with a BS/BA; or 9 years with a high school diploma.
Advanced Kotlin skills and strong knowledge of Android SDK fundamentals, Jetpack libraries, coroutines, and reactive state management.
Production experience with Jetpack Compose, including state, navigation, performance, testing, and interoperability with Views.
Demonstrated ability to make sound architecture decisions and safely evolve a mature codebase over time.
Experience with REST or GraphQL, local persistence, background work, authentication, analytics, and push notifications.
Strong testing and debugging habits, using crash, performance, and product telemetry to guide decisions.
Experience shipping through Google Play, managing staged rollouts, and responding to production issues.
Clear written and verbal communication with engineering and non-engineering partners.
Record of mentoring others and improving team practices through influence and example.
Must be a U.S. Citizen.
Ability to obtain a Public Trust clearance.

Required/Relevant Technologies

Kotlin, Jetpack Compose, Android SDK, Jetpack libraries
Coroutines, reactive state management, REST, GraphQL
Views, Google Play
Swift, SwiftUI, UIKit, Xcode

iOS Experience Expected

Hands-on experience reading and making scoped changes in Swift, SwiftUI, and/or UIKit.
Familiarity with Xcode, iOS app lifecycle, navigation, concurrency, testing, code signing, and App Store release workflows.
Ability to compare Android and iOS implementation tradeoffs without forcing identical architecture or user-interface patterns.
Experience contributing to shared mobile conventions, API contracts, design systems, analytics taxonomies, or cross-platform feature parity.

Preferred Qualifications

6+ years of professional software engineering experience, including substantial ownership of production Android applications (equivalent depth of experience is welcome).
Experience in a consumer, subscription, healthcare, fintech, marketplace, or other reliability-sensitive mobile product.
Knowledge of Kotlin Multiplatform or another selective code-sharing approach, with pragmatic judgment about where sharing helps.
Experience with mobile CI/CD, build performance, feature flags, experimentation, and automated release tooling.
Familiarity with mobile security, privacy, accessibility standards, and threat modeling.
Experience leading migrations such as Views to Compose, monolith to modules, or legacy asynchronous code to coroutines.

Compensation & Location

Location: San Antonio, TX (onsite)
Target Salary Range: USD 86,000 - 138,000 per yearly
Employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay.

Benefits

Medical, dental, vision
Life, Health savings account
Short/long term disability
EAP
Parental leave
401(k)
Paid time off (PTO) for vacation
Company paid holidays

Application & Interview Notes

The application period is estimated to be 30 days from the job posting date.
By applying, you are expressing interest in the role and the Company.
During application review, candidates may be required to participate in an on-camera interview and an identity verification process.
Use of artificial intelligence (AI) tools during Peraton interviews is strictly prohibited unless the candidate has obtained prior written authorization.
All interview responses must be the candidate’s own.

Education: BS/BA

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Today

Android Developer

Adidev Technologies Inc Westlake, TX

Westlake, TX

Today

$30 - $40/hr Full time Backend Developer Android Android Developer

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Job Description

Adidev Technologies Inc is building and supporting large-scale applications for prominent clients, and the Android Developer role sits at the center of that delivery. This onsite position focuses on designing, developing, and maintaining mobile features for real-world products, with client assignments that may require relocation for extended project timelines.

Based in Westlake, TX (onsite), the role is full-time and can be offered as W2 or Contract 1099, with a 40 hours per week schedule. Assignments typically run 6 to 18 months, and relocation is mandatory for client coverage.

Role Overview

Design, develop, and enhance applications for the Android platform (iOS or Android experience is used depending on project needs).
Contribute to the definition, design, and implementation of new features alongside a team.
Maintain and improve existing apps by suggesting improvements and addressing issues that impact performance.
Ensure strong application performance, quality, and responsiveness.
Identify bottlenecks, fix bugs, and maintain code quality.

Delivery and Communication

Establish effective communication with clients.
Provide accurate project milestones and timelines, including gathering requirements and translating them into realistic plans.
Deliver projects on time and communicate changes promptly.
Maintain consistent communication through phone, text, and email.
Complete coding tests or challenges as required.
Maintain positive rapport with all clients.

Required Skills and Qualifications

Strong understanding of MVC / MVVM software architectural patterns.
Proficiency in Java and Kotlin with at least 1 year of experience.
At least one published application on the Play Store.
Familiarity with the Android SDK, various Android versions, and adapting to different screen sizes.
Experience with testing frameworks such as Espresso and JUnit.
Knowledge of mobile data storage using SQLite and Room.
Familiarity with RESTful APIs for back-end integration.
Comfortable with source control tools including GIT and SVN.
Excellent communication skills (written and verbal), along with self-leadership and a strong work ethic.
A portfolio featuring impactful application releases is a significant advantage.

Technologies

Android, iOS
Java, Kotlin
Android SDK, MVC, MVVM
Espresso, JUnit
SQLite, Room
RESTful APIs
GIT, SVN

Compensation and Benefits

Salary: USD 30 - 40 per hour (or $60k to $85k depending on experience).
Paid relocation is provided.
Remote assistance support is available.
Regular salary reviews are mentioned.

Adidev Technologies Inc provides ongoing guidance to support growth, including teaching and development, custom support from dedicated teams, market-expertise project placement, and career growth through industry experience. The company’s workforce spans four continents, serving hundreds of Fortune 1000 and innovative startup clients across the USA with thousands of successful projects.

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Today

Mid Level Android Developer

Adidev Technologies Inc San Jose, CA

San Jose, CA

Today

$30 - $40/hr Full time Android Android Developer Android Development

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Job Description

Design, build, and support mobile applications for high-profile clients in a San Jose onsite role with relocation for multi-month assignments.

Responsibilities

Design, develop, and improve applications for either iOS or Android
Maintain performance, quality, and responsiveness across the app experience
Work with a team to define, design, and implement new features
Monitor and resolve bottlenecks, bugs, and code quality issues
Identify areas for improvement and suggest enhancements to existing apps
Capture requirements and provide accurate, realistic project milestones and timelines
Deliver projects on schedule and communicate changes promptly
Share progress and milestones using consistent communication via phone, text, and email
Maintain positive client rapport and manage client expectations
Complete coding tests or challenges as required

Requirements

Strong understanding of MVC / MVVM software architectural patterns
Proficiency in Java and Kotlin with at least 1 year of experience
At least 1 published application on the Google Play Store
Familiarity with the Android SDK, multiple Android versions, and responsive layouts for different screen sizes
Experience with testing frameworks including Espresso and JUnit
Knowledge of mobile data storage with SQLite and Room
Familiarity with RESTful APIs for back-end integration
Comfortable working with source control using GIT and SVN
Strong written and verbal communication skills
Self-leadership and a strong work ethic
Portfolio with impactful application releases is a plus

Technologies

Android, iOS
MVC, MVVM
Java, Kotlin
Android SDK
Espresso, JUnit
SQLite, Room
RESTful APIs
GIT, SVN
Google Play Store

Benefits

Competitive compensation: $60k to $85k or $30/hr to $40/hr (depending on experience)
Paid relocation
Support available remotely
Regular salary reviews

Role Details

Position: Mid Level Android Developers
Location: Onsite in San Jose, CA
Remote: No remote positions available
Relocation: Mandatory for assignments lasting 6 to 18 months, with possible extensions
Compensation: Commensurate with expertise
Type: Full-time (W2 or Contract 1099)
Schedule: 40 hours per week

How You’ll Be Supported

Teaching and development to build consulting capability for end clients
Multiple support teams, including Development Managers and Tech Subject Matter Experts
Project placement support through a market-expertise team
Career growth through industry experience

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Today

Mobile Application Developer

Adidev Technologies Inc Plano, TX

Plano, TX

Today

$30 - $40/hr Full time Android Development APIs Ios Development

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Job Description

Adidev Technologies Inc is hiring an entry to mid-level Mobile Application Developer to enhance and debug large-scale mobile applications for a well-known client. The role supports both iOS and Android development, and it includes client-based assignments that may require relocation.

Location

Plano, TX (onsite)

Compensation

USD 30 to 40 per hourly

Role Responsibilities

Enhance and debug large-scale mobile applications for one of the company’s well-known clients.

Required Experience

The position requires at least 1 years of experience. iOS and Android experience expectations are split as follows.

Android: Java (1-2 years), Kotlin (1 year), Android SDK, Play Store.
iOS: Swift (1-2 years), Objective-C (1-2 years), iOS SDK, App Store.

Android Qualifications and Skills

At least 1 years of experience with Java and Kotlin.
At least 1 application published to the Play Store, demonstrating familiarity with the release process.
Strong knowledge of the Android SDK, differences across Android versions, and supporting different screen sizes.
Experience with offline storage, threading, and performance tuning.
Knowledge of the open-source Android ecosystem and libraries commonly used for standard tasks.
Familiarity with RESTful APIs to connect Android apps to back-end services.
Comfortable with Git and source control.
Strong self-management and time management, supported by a solid work ethic.
Excellent communication skills, both written and verbal.

iOS Qualifications and Skills

Proficiency with Swift and Objective-C (knowledge and hands-on), plus Cocoa Touch.
Experience with iOS frameworks such as Core Data and Core Animation.
Experience implementing design patterns such as MVC and Singleton.
Experience with offline storage, threading, and performance tuning.
Familiarity with RESTful APIs for connecting iOS applications to back-end services.
Familiarity with third-party API integrations, including Facebook, Dropbox, Instagram, Twitter, GoogleDrive, Bluetooth, and Keychain.
Knowledge of other web technologies and UI/UX standards.
Understanding of Apple design principles and interface guidelines.
Knowledge of low-level C-based libraries is preferred.
Experience with performance and memory tuning using tools such as Instruments and Shark (depending on project needs).
Familiarity with cloud message APIs and push notifications.
A knack for benchmarking and optimization.
Proficient understanding of code versioning tools, such as Git, Mercurial, or SVN.
Familiarity with continuous integration.

Benefits

Competitive salary.
Paid relocation.
Remote support.
Guaranteed regular salary reviews.
Job type: W2 or Contract 1099 (full time, 40 hours).
Salary range: $60k to $85k or $30/hr to $40/hr depending on experience.

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1d ago

Mobile Application Developer III

Love's Travel Stops Oklahoma City, OK 🇺🇸 Remote

Oklahoma City, OK

1d ago

Full time Android Android Developer APIs

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Job Description

Love’s Travel Stops is hiring a Remote Application Developer III to design, build, and enhance Android mobile applications with a focus on customer experience, system reliability, and faster delivery. This fully proficient individual contributor role blends hands-on Android development with strong quality, CI/CD, DevOps, and AI-assisted tooling to help teams ship with confidence. The position is based in Oklahoma City, OK (remote) and requires 5+ years of experience.

What you’ll do

Design, develop, and enhance Android mobile applications running in cloud-based and distributed environments
Deliver scalable, maintainable, high-quality code aligned with enterprise engineering standards
Integrate mobile apps with backend services and RESTful APIs
Troubleshoot and resolve complex defects, performance issues, and production incidents
Build and maintain automated test suites across unit, integration, and UI testing
Increase release quality and confidence using automation and continuous testing practices
Partner with QA to strengthen test coverage and support defect prevention strategies
Contribute to CI/CD pipelines, including build automation, testing, and deployment
Support monitoring, observability, and production stability for mobile applications
Apply secure coding practices and data protection standards
Translate business requirements into technical solutions and implementation plans
Participate in architecture discussions and contribute to team design decisions
Collaborate cross-functionally in Agile/Scrum ceremonies such as estimation and sprint planning
Provide informal guidance and support to less experienced developers
Use AI-assisted development tools to improve code quality, testing efficiency, and delivery speed
Identify and implement opportunities to improve development processes and engineering practices
Stay current with mobile technologies, frameworks, and industry trends
Support broader team and enterprise goals by proactively contributing to initiatives beyond core responsibilities

What you bring

Strong proficiency in Android development using Kotlin and/or Java
Experience with mobile test automation frameworks
Experience delivering and supporting customer-facing mobile applications
Experience integrating mobile apps with RESTful APIs and backend services
Experience with CI/CD pipelines, automated testing, and DevOps practices
Strong understanding of software design patterns and engineering best practices
Ability to collaborate effectively within Agile/Scrum teams
Familiarity with AI-powered developer tools such as GitHub Copilot, Claude Code, Tabnine, or similar
Experience using AI-assisted coding tools to improve developer efficiency and code quality
5+ years of relevant experience

Benefits

Fuel Your Growth with Love’s - company funded tuition assistance
Paid Time Off
401(k) – 100% match up to 5%
Medical/Dental/Vision Insurance after 30 days
Competitive Pay
Career Development

Core technologies you’ll work with

Android, Kotlin, Java, RESTful APIs, CI/CD, unit testing, integration testing, UI testing, DevOps, GitHub Copilot, Claude Code, Tabnine, Agile/Scrum.

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1d ago

Android Developer

IDR Inc. Bellevue, WA

Bellevue, WA

1d ago

$53 - $68/hr Full time Android Android Applications Android Developer

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Job Description

IDR, Inc. is hiring an Android Developer in Bellevue, WA (onsite) to help build and modernize large-scale consumer retail and e-commerce applications.

Responsibilities

Support development and modernization of Android mobile applications in a fast-paced Agile environment
Collaborate on API and backend service integrations to support seamless user experiences
Contribute to delivery success for large-scale consumer-facing retail and e-commerce platforms
Use Kotlin and React Native to build and enhance mobile application functionality
Participate in app migration efforts to improve framework support and platform capabilities

Requirements

Professional experience developing native Android mobile applications
Strong hands-on development experience with Kotlin
Experience with React Native
Strong understanding of Android application architecture and mobile development best practices
Experience integrating mobile applications with APIs and backend services

Technologies

Android
Kotlin
React Native
Agile
APIs
Backend services

Compensation

USD 53 - 68 per hour

Benefits

Competitive compensation package
Full Benefits: Medical, Vision, Dental, and more
Opportunity to join an industry leading organization
Employee Stock Ownership Program
Medical, Dental, Vision, and Life Insurance

More about IDR

25+ Years of proven industry experience in 4 major markets
Employee Stock Ownership Program
Dedicated Engagement Manager committed to your success
Medical, Dental, Vision, and Life Insurance
ClearlyRated's Best of Staffing & Talent Award winner 12 years in a row
#LI-ONSITE

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1d ago

iOS & Android Mobile App Developer

Adidev Technologies Inc Denver, CO

Denver, CO

1d ago

$30 - $40/hr Full time Backend Developer Android Android Sdk

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Job Description

Join Adidev Technologies Inc to build and improve large-scale mobile apps for prominent clients. This is a hands-on onsite role based in Denver, CO, with mandatory relocation for client assignments that typically run 6 to 18 months (with extensions). You will work in a team environment that supports your growth, keeps you connected to delivery leadership, and helps you secure strong project placements.

What you’ll do

Design, develop, and enhance applications for either iOS or Android.
Drive performance, quality, and responsiveness across releases.
Collaborate with the team to define, design, and implement new features.
Identify bottlenecks, fix bugs, and maintain strong code quality.
Support delivery by providing accurate project milestones and timelines.
Maintain effective client communication and positive client rapport.
Gather requirements and translate them into realistic timelines for completion.
Complete any requested coding tests or challenges.
Suggest improvements to existing applications.
Maintain consistent communication via phone, text, and email, and deliver projects on time while promptly communicating changes.

What you bring

Minimum 1 to 2 years of experience.
Open to relocating to new cities or states based on client assignments.
Strong understanding of MVC / MVVM architectural patterns.
Proficiency in Java and Kotlin (at least 1 year experience).
Published at least 1 application on the Play Store.
Familiarity with the Android SDK, Android versions, and adapting to different screen sizes.
Experience with Espresso and JUnit testing frameworks.
Knowledge of mobile data storage using SQLite and Room.
Familiarity with RESTful APIs for back-end integration.
Comfortable with GIT, SVN, and source control.
Excellent written and verbal communication skills and self-leadership work ethic.
A portfolio featuring impactful application releases is a significant advantage.
Proficiency in Swift and Objective-C (at least 1 year experience).
Experience with iOS frameworks such as Core Data, Coco touch, Combine, and Core Animation.
Familiarity with design patterns including MVC and Singleton.
Thorough understanding of offline storage, threading, and performance optimization.
Knowledge of RESTful APIs connecting iOS apps to back-end services.
Experience with 3rd party API integrations such as Facebook and Dropbox.
Familiarity with UI/UX standards and Apple’s design principles.
Knowledge of C-based libraries preferred.
Experience with performance and memory tuning tools.
Proficient in code versioning tools such as Git.

Compensation and role details

Salary range: $60k to $85k or $30/hr to $40/hr (depending on experience)
Employment type: Full-time (W2 or Contract 1099)
Schedule: 40 hours per week
Location: Onsite only (no remote positions available)

Benefits and support

Paid relocation (on us) for client assignments
Support, even from afar, with remote assistance
Regular salary reviews? Included

How we’ll guide you

Teaching and Development: We help nurture your growth into an exceptional consultant delivering top-tier solutions to end clients.
Custom Support: Development Managers and Tech Subject Matter Experts support you across engagements.
Project Placement: A market-expertise team works to help you secure and thrive in client projects.
Career Growth: We facilitate industry experience to support your technical journey.

Global presence and a proven track record: our diverse workforce spans four continents, and we support hundreds of Fortune 1000 clients and innovative startups with thousands of successful projects across the USA.