Kotlin Language

Kotlin Language Engineer Jobs

18 jobs found

17d ago

Android Software Engineer

Johnson Health Tech North America Inc Cottage Grove, WI

Cottage Grove, WI

17d ago

Full time Android Android Sdk C Sharp

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Job Description

Johnson Health Tech North America Inc is seeking an Android Software Engineer to contribute to fitness console software development alongside global R&D teams. This onsite role in Cottage Grove, WI focuses on defining requirements, elevating software quality, and onboarding new engineers, while leading by example to resolve engineering challenges.

Responsibilities

Fosters a constructive, engaging, and inclusive team culture
Participates in sprint ceremonies to empower the software team to contribute to the development process
Understands and helps improve Johnson Development Processes
Coaches others to help them understand these processes
Promotes quality software development practices, documentation, and testing within the team
Leads individual development initiatives as needed

Requirements

Education: Bachelor’s degree or higher in Computer Science, Computer Engineering, Electrical Engineering, or other Science / Technical Engineering field
Experience: Minimum 2 years of professional software development experience
3-5 years of Native Android development using Java or Kotlin
5 years of object-oriented programming in languages such as C++, C#, or Java
4 years of UI-based application development
2 years with built-in and integration unit testing
3 years writing or editing technical documentation
3 years sustaining or maintaining projects
Experience in project architecture
Willingness to travel internationally and domestically
Ability to communicate with overseas teams during non-business hours
Strong ability to work with diverse groups and individuals
Ability to mentor junior engineers
Excellent written and verbal communication skills

Technologies

Java
Kotlin
C++
C#
Android

Benefits

Health & Dental Insurance
Company paid Life Insurance
401(k)
Paid Time Off benefits
Product discounts
Wellness programs

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24d ago

Software Engineer - AI Trainer

DataAnnotation Ottawa, OH 🇺🇸 Remote

Ottawa, OH

24d ago

$50 - $100/hr Contract Ai Trainer Ai Training Artificial Intelligence

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Job Description

DataAnnotation is seeking a Software Engineer - AI Trainer in Ottawa, OH, with remote work options. This contract role supports training AI systems by designing and solving coding problems, delivering high quality code with explanations, and evaluating AI-generated code, all within a flexible remote schedule.

Responsibilities

Create and solve a variety of coding problems used to train AI models.
Produce clear, high quality code snippets accompanied by thorough explanations.
Evaluate AI-generated code for accuracy, performance, and readability.
Provide actionable feedback that informs the next generation of AI models.

Requirements

Fluency in English at a native or bilingual level.
Proficiency in at least one of the following languages or frameworks: JavaScript, TypeScript, Python, C, C#, C++, React, Go, Java, Kotlin, or Swift.
Excellent writing and grammar skills.
Bachelor's degree (completed or in progress).
Previous experience as a Software Developer, Coder, Software Engineer, or Programmer is preferred.

Technologies

JavaScript
TypeScript
Python
C
C#
C++
React
Go
Java
Kotlin
Swift

Benefits

Fully remote: work from anywhere in the United States, Canada, United Kingdom, Ireland, Australia, and New Zealand.
Flexible schedule: select projects and determine your own working times from your own computer at home.
Competitive pay: hourly rates of $50 to $100 USD, with potential for higher bonus rates on certain projects.
Impact: contribute to shaping the future of AI technologies.

Note

Payment is processed via PayPal. We will never ask for money from you. PayPal handles currency conversions from USD.
This position is available only to applicants located in the US, Canada, UK, Ireland, Australia, and New Zealand. Those outside these regions will not see work or assessments on our site at this time.

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28d ago

Mobile Software Engineer - Req# 606

COCC Southington, CT

Southington, CT

28d ago

Full time Android iOS Java Language

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Job Description

COCC is seeking a Mobile Software Engineer to design, develop, test, and maintain native Android and iOS banking experiences. This role combines hands-on mobile development with opportunities to influence product direction, with a focus on automation and efficient delivery in a hybrid work setup based in Southington, CT.

Responsibilities

Create, implement, and maintain native Android and iOS applications using Kotlin, Java, Swift, and Objective-C.
Partner with product managers, UX designers, architects, and fellow engineers to define and deliver new features and enhancements.
Navigate a complex mobile ecosystem that includes both internally developed and vendor-supported components, contributing to modernization and long-term maintainability.
Identify opportunities to boost development efficiency through automation, tooling, CI/CD improvements, and streamlined processes.
Troubleshoot production issues, performance bottlenecks, and technical debt while upholding high quality standards.
Engage in code reviews, technical design discussions, and architectural decisions shaping the future of the mobile platform.
Remain current with mobile development trends, frameworks, and best practices, bringing innovative ideas to the team.

Requirements

3+ years of experience delivering native mobile applications for Android and/or iOS in production environments.
Strong proficiency with Kotlin, Java, Swift, and/or Objective-C, including building, testing, and supporting customer-facing apps.
Experience in Agile settings with CI/CD pipelines, DevSecOps practices, and modern delivery methodologies.
Orientation toward automation, operational efficiency, and reducing friction across the software development lifecycle.
Excellent communication and collaboration skills, capable of working effectively with both technical and non-technical teams.

Technologies

Kotlin
Java
Swift
Objective-C
Android
iOS

Benefits

Hybrid work arrangements with generous paid time off for work-life balance and flexibility.
Customized training and onboarding to support your first year at COCC.
Comprehensive development programs aligned with career paths.
Access to advanced training resources from vendors such as SANS, Pluralsight, and CBTNuggets.
Competitive compensation with ample PTO and robust benefits.
On-site fitness centers, wellness incentives, and lifestyle spending accounts.
Tuition reimbursement.
One-on-one career coaching.
DEIB initiatives that encourage bringing your whole self to work.
Financial planning assistance from certified professionals.
Peer recognition programs.

Accessibility

If you require accessibility assistance or an accommodation to apply for this job, please contact 860-678-0444 or TalentManagement@cocc.com. Please specify the support you need, and the team will respond promptly.

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28d ago

Software Engineer - AI Trainer

DataAnnotation Stockton, CA 🇺🇸 Remote

Stockton, CA

28d ago

$50 - $100/hr Contract .NET Ai Trainer Ai Training

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Job Description

DataAnnotation, a company focused on advancing AI through careful annotation and training, is seeking a Software Engineer to contribute to AI trainer objectives from a fully remote position. The role centers on designing and solving coding problems used to train AI systems, delivering clear, well documented code snippets, and evaluating AI generated code for quality and performance. This contract opportunity offers flexible scheduling and a chance to impact how next generation AI models learn, all from Stockton, California with remote work options.

Responsibilities

Design and solve diverse coding problems used to train AI systems.
Write clear, high quality code snippets and provide detailed explanations.
Evaluate AI produced code for accuracy, performance, and clarity.
Offer feedback that directly informs the next iterations of AI models.

Requirements

Fluency in English at a native or bilingual level.
Proficiency in at least one of the following languages or frameworks: JavaScript, TypeScript, Python, C, C#, C++, React, Go, Java, Kotlin, or Swift.
Excellent writing and grammar skills.
Bachelor's degree either completed or in progress.
Previous experience as a Software Developer, Coder, Software Engineer, or Programmer is preferred.

Technologies

JavaScript
TypeScript
Python
C
C#
C++
React
Go
Java
Kotlin
Swift

Benefits

Fully remote: work from anywhere in the US, Canada, UK, Ireland, Australia, and New Zealand.
Flexible schedule: choose projects and working hours, using your own computer from home.
Competitive pay: hourly range of $50 to $100 USD, with opportunities for higher bonus rates on certain projects.
Impact: contribute to shaping the future of AI technologies.

Advantages of contracting with us

Fully remote: work from anywhere in the US, Canada, UK, Ireland, Australia, and New Zealand.
Flexible schedule: select projects and hours, on your own computer from home.
Competitive pay: hourly rates between $50 and $100 USD, with potential for higher bonuses on select projects.
Impact: help determine the trajectory of AI technologies.

Note

Payment is via PayPal. We will never request money from you. PayPal handles currency conversions from USD. This role is available to contractors in the United States, Canada, the United Kingdom, Ireland, Australia, and New Zealand. Contractors located outside these regions will not see work or assessments on our site at this time.

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1mo ago

Software Engineer I, Discovery

Twitch Interactive, Inc. San Francisco, CA

San Francisco, CA

1mo ago Closed

Full time APIs Database Full Stack

This position is no longer accepting applications (closed Aug 15, 2026).

Job Description

Twitch's Discovery team designs and operates interactive experiences that help communities form, grow, and thrive. The Software Engineer I, Discovery will primarily focus on backend systems while collaborating across the stack that includes React and Golang, with the possibility of future client-side work. This on-site role is based in San Francisco, CA.

Responsibilities

Work with product managers, technical leads, and other engineers to design, develop, launch, and operate interactive experiences
Investigate, instrument and solve performance problems
Build distributed applications at scale
Collaborate with both your team and related teams, fostering a shared understanding of how to solve common problems and deliver solutions
Work backwards from customer problems to drive business impact

Requirements

1+ years of non-internship professional software development experience
1+ years experience developing software in a professional environment
Prior experience building consumer-facing products at scale
Proficient coding skills in modern languages and frameworks such as React, Kotlin, Swift, Objective-C, etc.
Excellent verbal and written communication skills
Minimum of Bachelor's degree in Computer Science or equivalent experience

Technologies

React
Golang
Kotlin
Swift
Objective-C
Typescript
AWS ECS
DynamoDB
Lambda
SQS
Step Functions

Benefits

Medical, Dental, Vision & Disability Insurance
401(k)
Maternity & Parental Leave
Flexible PTO
Amazon Employee Discount

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1mo ago

Staff Software Engineer - AI Trainer

DataAnnotation Harrisburg, PA 🇺🇸 Remote

Harrisburg, PA

1mo ago Closed

$50 - $100/hr Contract .NET Ai Trainer Ai Training

This position is no longer accepting applications (closed Aug 15, 2026).

Job Description

DataAnnotation invites applications for a Staff Software Engineer - AI Trainer to craft and refine coding challenges used in training AI systems. This contract position supports remote collaboration with flexible project scheduling, based in Harrisburg, Pennsylvania.

Responsibilities

Develop and solve a broad set of programming problems that contribute to AI model training.
Produce clear, well-structured code samples accompanied by thorough explanations.
Assess AI-generated code for correctness, performance, and readability.
Deliver feedback that guides the evolution of next generation AI models.

Requirements

Fluent in English, with native or bilingual proficiency.
Proficiency in at least one of these languages or frameworks: JavaScript, TypeScript, Python, C, C#, C++, React, Go, Java, Kotlin, or Swift.
Strong writing and grammar skills.
Bachelor's degree (completed or in progress).
Previous experience as a Software Developer, Coder, Software Engineer, or Programmer is preferred.

Technologies

JavaScript
TypeScript
Python
C
C#
C++
React
Go
Java
Kotlin
Swift

Benefits

Fully remote work from anywhere within the US, Canada, UK, Ireland, Australia, and New Zealand.
Flexible schedule, enabling you to select projects and work times from your own computer at home.
Competitive hourly pay, up to $100+ USD per hour, with potential higher bonus rates for certain projects.
Opportunity to influence the direction of AI technologies.

Note

Payment is processed via PayPal. We will not request money from applicants, and PayPal will handle currency conversions from USD. This position is open only to residents of the US, Canada, UK, Ireland, Australia, and New Zealand. Applicants located outside these regions will not see work or assessments on our site at this time.

View full job page →

1mo ago

Senior Software Engineer, Core Experiences

Speechify Houston, TX

Houston, TX

1mo ago Closed

$140k - $200k/yr Full time Backend Developer Senior Cloud Operations

This position is no longer accepting applications (closed Aug 13, 2026).

Job Description

Speechify is hiring a Senior Software Engineer for the Core Experiences Team in Houston, TX. This onsite role focuses on building and maintaining foundational services and SDKs that power Speechify across platforms, with emphasis on APIs, infrastructure, and reliable systems.

Benefits

A fast-growing environment where you can help shape the company and product.
An entrepreneurial-minded team that supports risk-taking, intuition, and hustle.
A hands-off management approach that lets you focus and perform at your best.
The opportunity to make a meaningful impact in a transforming industry.
Competitive compensation, a friendly and laid-back culture, and a strong asynchronous work ethos.
The chance to work on a life-changing product used by millions.
The ability to build products that directly support people with learning differences such as dyslexia, ADD, low vision, concussions, autism, and more.
A position in one of the fastest growing sectors of tech, at the intersection of artificial intelligence and audio.

Responsibilities

Collaborate with Product Teams to scope initiatives, trim scope for faster customer feedback, weigh integration and UX tradeoffs across teams, and deliver solutions via the cross-platform SDK.
Improve existing functionality to enable faster loading and smarter parsing by creating efficient abstractions and refining algorithms.
Deliver cloud functions, lightweight backend services, and batch jobs using Kotlin.

Requirements

Systems thinking
Speed
Focus
Collaboration
Kotlin Multiplatform experience (Java experience is acceptable, but the role emphasizes Kotlin Multiplatform)
Prior experience with Google Cloud Platform (GCP) is a plus