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≈ $164k – $341k per year (Estimated)
Location
In office (Seattle)

Confirmed on the employer's own hiring board on Oct 14, 2026. First seen by Alion on Oct 8, 2026. YO AI Labs scores A on the Alion truth index.

Overview
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Impact
Profile match
YO AI Labs is an artificial intelligence platform specializing in AI model training, evaluation, and data annotation services. Headquartered in San Francisco, California, United States, the company connects domain experts and remote specialists across the globe to review, test, and benchmark generative AI model outputs. Through its decentralized workforce solutions and structured evaluation workflows, it enables frontier technology developers to enhance the accuracy, safety, and reliability of next-generation artificial intelligence systems.

Backend Java Developer

Job Type: Contractor

Location: Remote

Job Overview

We are seeking experienced Backend Java Developers to support a high-impact technology and AI training project. In this role, you will apply your backend development expertise to design, develop, review, and optimize scalable systems using Java, Spring Boot, and microservices architecture.

No prior AI experience is required. Strong backend engineering expertise and the ability to deliver high-quality technical solutions are the key requirements.

Key Responsibilities

  • Design, develop, and maintain scalable backend applications using Java and Spring Boot.
  • Build and maintain robust microservices architectures.
  • Develop and integrate REST APIs and backend services.
  • Review technical requirements and deliver clean, maintainable, and efficient code.
  • Participate in code reviews and provide constructive technical feedback.
  • Troubleshoot, debug, and optimize backend systems.
  • Contribute to application performance, reliability, scalability, and security.
  • Document technical processes, solutions, and system designs.
  • Collaborate effectively with remote teams and stakeholders.

Required Qualifications

  • Strong proficiency in Java.
  • Hands-on experience with Spring Boot.
  • Strong understanding of microservices architecture and design principles.
  • Experience developing scalable and maintainable backend systems.
  • Solid knowledge of REST APIs, data structures, and backend best practices.
  • Strong problem-solving and debugging skills.
  • Excellent written and verbal communication skills.
  • Strong attention to detail and ability to work independently.

Preferred Qualifications

  • Experience with AWS, Azure, or Google Cloud.
  • Experience with high-availability or distributed systems.
  • Background in AI-driven or data-intensive applications.
  • Experience working with remote or distributed development teams.

Core Skills

Java | Spring Boot | Microservices | REST APIs | Backend Development | Distributed Systems | API Development | Cloud Platforms | Debugging | System Design | Software Architecture | Code Review

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