Java Developer

$20 - $42/hourpay

Required Skills

JAVA
Kotlin
Spring Boot
Cursor
GraphQL
REST API

Job Description

Job Title: Java Developer - AI Expert


Job Type: Part-time, Contract


Location: Remote, (United States)


Job Summary:

Join our customer's team as an experienced Backend Developer. In this high-impact, remote role, you'll design, implement, and continually improve robust backend APIs while collaborating with cutting-edge AI research. You'll help test and shape the next generation of developer tools alongside a high-caliber engineering group.


Key Responsibilities:

  1. Design, develop, and optimize REST and GraphQL endpoints for scalable APIs.
  2. Drive data validation, error handling, and security best practices within backend services.
  3. Plan and execute database migrations, optimizations, and schema changes as needed.
  4. Actively test new AI-powered models in Cursor, providing actionable feedback via incident reports, bug traces, and screenshots.
  5. Participate in 4-day intensive testing bursts, exploring how AI models impact real coding workflows.
  6. Engage thoughtfully with the research team in a dedicated Slack channel to discuss findings and propose improvements.
  7. Submit detailed post-burst surveys, delivering insights on model performance and developer experience.


Required Skills and Qualifications:

  1. 3+ years of professional experience as a backend developer, with strong expertise in Java.
  2. Proficient in building and maintaining RESTful and GraphQL APIs.
  3. Advanced understanding of backend data validation, error handling, and API security.
  4. Hands-on experience with database migrations, performance tuning, and schema design.
  5. Extensive use of AI tools for coding; familiarity with Cursor is highly desirable.
  6. Outstanding written and verbal communication skills, with a knack for clear incident and bug reporting.
  7. Proven ability to thrive in fast-paced, confidential, and collaborative remote environments.


Preferred Qualifications:

  1. Visible contributions to open source (e.g., GitHub stars or contributions).
  2. Experience designing or evaluating experimental tooling and developer workflows.
  3. Demonstrated enthusiasm for AI advancements in software development.
About micro1
micro1 is a data engine that helps AI labs train foundational models and enterprises build AI agents. We provide frontier evaluations and reinforcement learning environments used to improve LLM capabilities, as well as contextual evaluations used to monitor and improve AI agents in enterprise settings. Our data engine includes an AI recruiter agent that sources and vets domain experts, a data platform that enables rapid production of high-quality training data, and a pipeline performance system that ensures both quality and velocity.
Our goal is to have 1 billion people doing meaningful work by contributing their expertise to the development of frontier AI models. We’ve raised $40M+ in funding, and our AI recruiter has powered more than 1 million AI-led interviews as our global network of experts expands to form the human intelligence layer for AGI.

This job is currently closed and not accepting applications. Thank you for your interest!

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