Sign up to access all features of our service.
  • Job search
  • Favorites
  • Create a CV
    New
  • Salaries
  • Subscriptions

Kotlin Coding Specialist - Freelance AI Trainer Project

$35 per hour
Part-time

Invisible Technologies

Job Application for Kotlin Coding Specialist - Freelance AI Trainer Project at Meridial
Back to jobs
Kotlin Coding Specialist - Freelance AI Trainer Project
World Wide - Remote
Are you a Kotlin expert eager to shape the future of AI? Large-scale language models are evolving from chatbots into powerful developer assistants capable of reasoning about complex software systems. With high-quality engineering data, tomorrow’s AI can support developers in solving real-world problems faster and more accurately. That training data begins with you—your coding expertise will help power the next generation of AI.
We’re looking for Kotlin specialists who can take real-world engineering scenarios—such as bug reports or feature requests in a Git repository—and produce clean, efficient, and idiomatic solutions using the Kotlin programming language. You’ll create high-quality code patches that reflect modern Android development practices and ensure technical correctness, maintainability, and clarity.
You should have hands-on experience with modern Android and Kotlin development, including Jetpack Compose, Kotlin Coroutines, and Jetpack libraries such as Room, WorkManager, Datastore, ViewModel, and Hilt. Familiarity with build.gradle configuration, dependency management, and networking libraries such as Ok Retrofit, and Coil is also important. Experience with Android multimedia tools (CameraX, ExoPlayer, Media3) is a plus.
On a typical day, you’ll evaluate AI-generated code, correct errors, implement optimized Kotlin solutions, and document best practices that demonstrate modern Android design patterns and coding conventions.
A strong background in Android software development is required, with demonstrable experience building and maintaining production-level Kotlin applications. Clear, structured communication and the ability to explain technical decisions are essential.
We offer a pay range of $35+ per hour, with the exact rate determined after evaluating your experience, expertise, and geographic location. Final offer amounts may vary from the pay range listed above. As a contractor, you’ll supply a secure computer and high-speed internet; company-sponsored benefits such as health insurance and PTO do not apply.
Job title: Master - Kotlin Coding Specialist – AI Trainer
Employment type: Contract
Workplace type: Remote
Seniority level: Mid - Senior Level
Apply for this job
*
indicates a required field
First Name
*
Last Name
*
Email
*
Phone
Country
*
Phone
*
Location (City)
*
Locate me
Resume/CV
*
Attach
Attach
Dropbox
Google Drive
Enter manually
Enter manually
Accepted file types: pdf, doc, docx, txt, rtf
Education
School
Select...
Degree
*
Select...
Discipline
*
Select...
Start date year
*
End date year
*
Add another
What country are you currently a resident of?
*
Select...
If you are currently based in United States, please confirm your current state of residence. If you are based outside of the United States, select "I am not located in the United States".
*
Select...
LinkedIn Profile
*
Please acknowledge that you have read and agree to our Privacy Policy.
*
Yes
By clicking "Submit Application", you agree to Invisible's
Privacy Policy
.
Submit application
Powered by
Greenhouse

Vacancy posted 12 days ago
Similar jobs that could be interesting for youBased on the Kotlin Coding Specialist - Freelance AI Trainer Project in San Francisco, CA vacancy
  • $8 - $65 per hour

     ...Job Application for STEM Specialist (Fluent in Dutch) - Freelance AI Trainer Project at Meridial Back to jobs STEM Specialist (Fluent in Dutch) - Freelance...  ...design experience, data analysis projects, or coding portfolios signal fit. Clear, metacognitive communication... 
    Freelance
    Project
    Hourly pay
    Contract work
    Part time
    For contractors
    Immediate start
    Remote work

    Invisible Technologies

    San Francisco, CA
    12 days ago
  •  ...Job Application for PHP Coding Specialist - Freelance AI Trainer Project at Meridial Back to jobs PHP Coding Specialist - Freelance AI Trainer Project United States of America a Are you a coding expert fluent in PHP eager to shape the future of AI? Large... 
    Freelance
    Project
    Hourly pay
    Contract work
    Part time
    For contractors
    Immediate start
    Remote work

    Invisible Technologies

    San Francisco, CA
    12 days ago
  • $250k - $280k

     ...Staff Software Engineer, AI Data Platform Shape the Future...  ...used to source and match freelance workers to projects. Infrastructure that scales...  .... ~ You ship production code with coding agents daily. You...  ...TypeScript, Python, some Java & Kotlin APIs: GraphQL Cloud &... 
    Freelance
    Project
    Kotlin
    Work at office
    Flexible hours
    3 days per week

    WeHireYou

    San Francisco, CA
    3 days ago
  • $10 - $30 per hour

     ...Job Application for Government Specialist - Freelance AI Trainer Project at Meridial Back to jobs Government Specialist - Freelance AI Trainer Project United States of America Project Overview We are sourcing independent Government Specialists to provide... 
    Freelance
    Project
    Hourly pay
    Part time
    For contractors
    Remote work

    Invisible Technologies

    San Francisco, CA
    12 days ago
  •  ...Job Application for Vocal Audio Specialist - Freelance AI Trainer Project at Meridial Back to jobs Vocal Audio Specialist - Freelance AI Trainer Project World Wide - Remote Project Overview We are sourcing independent Vocal Audio Specialists to provide their... 
    Freelance
    Project
    Hourly pay
    Part time
    For contractors
    Remote work

    Invisible Technologies

    San Francisco, CA
    12 days ago
  • $8 - $65 per hour

     ...Job Application for Thai Voice Acting Specialist - Freelance AI Trainer Project at Meridial Back to jobs Thai Voice Acting Specialist - Freelance AI Trainer Project World Wide - Remote Target Profile: Near-Native Proficiency in Thai Project Overview:... 
    Freelance
    Project
    Hourly pay
    Contract work
    Part time
    For contractors
    Remote work

    Invisible Technologies

    San Francisco, CA
    12 days ago
  • $8 - $30 per hour

     ...Job Application for LaTeX Specialist - Freelance AI Trainer Project at Meridial Back to jobs LaTeX Specialist - Freelance AI Trainer Project World...  ...Fixing broken markdown elements, including unclosed code blocks, inaccurate language tags, headers, and list numbering... 
    Freelance
    Project
    Hourly pay
    Part time
    For contractors
    Remote work

    Invisible Technologies

    San Francisco, CA
    12 days ago
  • $11 - $30.65 per hour

    Responsibilities Create and execute role-play–based evaluation scenarios that simulate realistic customer service interactions across multiple domains, including: Flight bookings and travel support Financial services Telecommunications and technical support...
    Freelance
    Project
    Hourly pay
    Contract work
    Part time
    For contractors
    Remote work

    Invisible Technologies

    San Francisco, CA
    12 days ago
  •  ...Job Application for Welsh Audio Specialist - Freelance AI Trainer Project at Meridial Back to jobs Welsh Audio Specialist - Freelance AI Trainer Project World Wide - Remote Project Overview We are sourcing independent Audio Evaluation Specialists for an... 
    Freelance
    Project
    Hourly pay
    Part time
    For contractors
    Remote work

    Invisible Technologies

    San Francisco, CA
    12 days ago
  • $8 - $65 per hour

     ...Job Application for Korean-Japanese Bilingual Specialist - Freelance AI Trainer Project at Meridial Back to jobs Korean-Japanese Bilingual Specialist - Freelance AI Trainer Project World Wide - Remote Are you a bilingual professional fluent in Korean and Japanese... 
    Freelance
    Project
    Hourly pay
    Contract work
    Part time
    For contractors
    Remote work
    Worldwide

    Invisible Technologies

    San Francisco, CA
    12 days ago
  •  ...Job Application for Literature Specialist – Freelance AI Trainer Project at Meridial Back to jobs Literature Specialist – Freelance AI Trainer Project World Wide - Remote Are you a literature expert eager to shape the future of AI? Large-scale language models... 
    Freelance
    Project
    Hourly pay
    Contract work
    Part time
    For contractors
    Remote work

    Invisible Technologies

    San Francisco, CA
    12 days ago
  •  ...Job Application for Microbiology Specialist - Freelance AI Trainer Project at Meridial Back to jobs Microbiology Specialist - Freelance AI Trainer Project United States of America Are you a microbiology expert eager to shape the future of AI? Large‑scale language... 
    Freelance
    Project
    Hourly pay
    Contract work
    Part time
    For contractors
    Immediate start
    Remote work

    Invisible Technologies

    San Francisco, CA
    12 days ago
  •  ...Job Application for Drone Systems Specialist – Freelance AI Trainer Project at Meridial Back to jobs Drone Systems Specialist – Freelance AI Trainer Project United States of America We are seeking a highly skilled specialist with deep experience in drone systems... 
    Freelance
    Project
    Hourly pay
    Contract work
    Part time
    For contractors
    Remote work

    Invisible Technologies

    San Francisco, CA
    12 days ago
  • $50 - $75 per hour

     ...Job Application for Legal Counsel Specialist - Freelance AI Trainer Project at Meridial Back to jobs Legal Counsel Specialist - Freelance AI Trainer Project United States of America Are you a seasoned attorney eager to shape the future of AI? Large-scale language... 
    Freelance
    Project
    Hourly pay
    Contract work
    Part time
    For contractors
    Remote work

    Invisible Technologies

    San Francisco, CA
    12 days ago
  • $60 per hour

     ...Application for CVE & Application Security AI Task Auditor - Freelance AI Trainer Project at Meridial Back to jobs CVE...  ...sourcing experienced technical specialists in CVE and Application Security to...  ...vulnerability assessment, secure coding practices, and threat modeling).... 
    Freelance
    Project
    Hourly pay
    Contract work
    Part time
    For contractors
    Remote work

    Invisible Technologies

    San Francisco, CA
    12 days ago
  •  ...of the world’s fastest-growing AI companies accelerating the...  ...capabilities in thinking, reasoning, coding, agentic behavior,...  ...Business Analyst to support a project involving the evaluation of multiple...  ...is an advantage. Perks of Freelancing With Turing: Work at the forefront... 
    Freelance
    Project
    Remote work
    Flexible hours
    Weekday work

    Braintrust

    San Francisco, CA
    2 days ago
  •  ...experienced scientists and engineers to evaluate how frontier AI models handle real technical work: analyzing test,...  ...models so only genuinely hard tasks make it through. Some projects are authored and verified in code, so coding / scientific computing is a strong plus and... 
    Project
    Remote work
    Flexible hours

    Planet Pharma

    San Francisco, CA
    2 days ago
  • $90 per hour

     ...creative and technical talent with leading AI research labs. Headquartered in San...  ...labeling, model-evaluation, or structured code-review work. Pixel-perfect design-to-code...  ...background. More than one completed Mercor project and availability in contiguous multi-hour... 
    Project
    Contract work
    Summer work
    Local area
    Remote work

    Mercor

    San Francisco, CA
    15 days ago
  • $30 per hour

     ...to $30/hour ## About SME Careers As AI systems become more sophisticated, they rely...  ...hold for the model produced. - Work to project quality standards: Keep recordings free...  ...role (contract, studio, in-house, or freelance). - Genuine FreeCAD proficiency, not just... 
    Freelance
    Project
    Hourly pay
    Full time
    Contract work
    Local area
    Remote work
    Flexible hours

    SuperAnnotate

    San Francisco, CA
    1 day ago
  • $55 - $65 per hour

     ...technical talent with leading AI research labs. Headquartered in...  ...- Android Studio on macOS - Code Type: Contract Compensation...  ...Android applications using Kotlin and Java . Capture and...  ...and asynchronously to meet project deadlines. Collaborate with... 
    Project
    Kotlin
    Contract work
    Summer work
    Remote work

    Mercor

    San Francisco, CA
    5 days ago
  •  ...office. About Limrun Limrun gives cloud coding agents access to remote Xcode and iOS and...  ...discover Limrun and use it in their own projects. You'll build working examples,...  ...mobile development stack, such as Swift, Kotlin, React Native, or Flutter. You explain... 
    Project
    Kotlin
    Work at office
    Remote work
    3 days per week

    Limrun (YC P26)

    San Francisco, CA
    1 day ago
  • $96.5k - $201.7k

    Full rank (Specialist) - Wei Lab University of California, San Francisco Department of DermatologyDESCRIPTIONThis...  ...develop, guide, and complete research projects and manage and train lab personnel....  ...in biomarker discovery. 3 year coding experience in machine learning with... 
    Project
    Immediate start

    University of California, San Francisco

    San Francisco, CA
    4 days ago
  • $500 per unit

     ...creative and technical talent with leading AI research labs. Headquartered in San...  ...Position: Software Developers: Share Your AI Coding Sessions Type: Contract Compensation...  ...Build features on your own real project using the open-weight and Gemini models we... 
    Project
    Contract work
    Summer work
    Immediate start
    Remote work
    Flexible hours

    Mercor

    San Francisco, CA
    6 days ago
  • $55k - $58.6k

     ...Junior Specialist - Department of NeurologyJunior Specialist Department of Neurology University...  ....Under the supervision of the project manager and the Principal Investigator,...  ...(CSF). Core responsibilities include re-coding and processing of samples; preparation of... 
    Project

    UCSF

    San Francisco, CA
    3 days ago
  • $180k - $240k

     ...Focus: Full-Stack Engineering, AI Healthcare, Patient Experience...  ...features across the stack. A project may include a patient workflow...  ...The team works AI-natively. Coding agents are part of daily delivery...  ...TypeScript Swift Kotlin Python FastAPI MariaDB... 
    Project
    Kotlin
    Full time
    3 days per week

    NxT Level

    San Francisco, CA
    2 days ago
  • $130.6k - $192k

     ...engineer and technical leader leading multiple projects ~6+ years experience working in data...  ...role ~ You have proficiency in using AI coding tools (e.g., Claude Code, Codex, Cursor)...  ...in programming languages such as Python/Kotlin/Scala ~4+ years of experience in ETL... 
    Project
    Kotlin
    Hourly pay
    Work at office
    Local area
    Remote work
    Flexible hours

    DoorDash USA

    San Francisco, CA
    2 days ago
  •  ...groundbreaking platform that offers AI powered aviation training. About...  ...(Python, TypeScript, Golang, Kotlin, Scala, Rust, C++, etc.) Excellent engineering and coding skills. Solid understanding of...  ...the confidential nature of our projects, additional details about our company... 
    Project
    Kotlin
    Full time
    Work at office

    Stealth Aviation AI

    San Francisco, CA
    3 days ago
  • $130.6k - $192k

     ...features and bug fixes to upstream open-source projects.Mentor and educate your peers.Lead the...  ...with React on the frontend with Java, Kotlin, Python or Go backend experience.You...  ...communicator.You have proficiency in using AI coding tools (e.g., Claude Code, Codex, Cursor)... 
    Project
    Kotlin
    Hourly pay
    Work at office
    Local area
    Remote work
    Flexible hours

    Doordash

    San Francisco, CA
    3 days ago
  • $159.8k - $235k

     ...scale.You are proficient in Go, or Java/Kotlin with deep expertise in concurrency, distributed...  ...to end.You have proficiency in using AI coding tools (e.g., Claude Code, Codex, Cursor)...  ..., storage, or distributed systems projects.CompensationThe successful candidate’s starting... 
    Project
    Kotlin
    Hourly pay
    Full time
    Work at office
    Local area
    Remote work
    Flexible hours

    Doordash

    San Francisco, CA
    4 days ago
  • $176k - $242k

     ...marketing. You will write production code across Faire’s codebase, own...  ...with the right message.Other projects on our radar: a learning loop...  ...codebase. Faire’s stack is Kotlin, Java, JUnit, Hibernate, Guice...  ...ad platform API.Daily use of AI coding agents, plus experience... 
    Project
    Kotlin
    Contract work
    Temporary work
    Work experience placement
    Work at office
    Local area
    Remote work
    Monday to Friday
    Flexible hours
    3 days per week

    Faire

    San Francisco, CA
    6 days ago

Do you want to receive more vacancies?

Subscribe and receive similar vacancies to Kotlin Coding Specialist - Freelance AI Trainer Project. Be the first to apply!