AI training contract
Backend Java Developer
Software Engineering · USD 60-110 an hour. · 50 openings
Backend Java Developer is contract work for micro1, reviewing and correcting what AI models produce in software engineering. The output of the job is expert judgement written down: a model gives an answer, someone who knows the subject decides whether it is right and explains why.
What it requires. No credential is stated on this listing beyond experience in the field.
What it pays. USD 60 to USD 110 an hour, as published by micro1. Rates in this category track how rare the credential is rather than how hard the work is.
Where. The listing says this role is remote and names no country. micro1 says it hires talent from around the world, except people who reside in Afghanistan, Belarus, China, Cuba, Democratic Republic of the Congo, Hong Kong, Iran, Iraq, Libya, Macao, Myanmar, North Korea, Russian Federation, Somalia, South Sudan, Sudan, Syria, Venezuela, Ukraine, and Yemen. So this page lists every other country as eligible, on the strength of that rule and not of anything this listing says. Requirements can still differ by role, so check the application page on micro1 before you apply.
micro1 lists 50 openings on this role.
Skills named: JAVA, Spring Boot, Microservices.
Applications are made on micro1, not here. WFA Digital is independent of micro1 and may receive a referral fee if you are hired, at no cost to you.
Full listing, as published by micro1
Job Title: Backend Java Developer Job Type: Contractor Location: Remote As a Backend Java Developer, you'll apply your expertise to help train next-generation AI systems. Your work will shape how models learn, reason, and perform through high-quality, real-world input. No prior experience in AI is required — your domain knowledge is what matters. Key Responsibilities Design, develop, and maintain scalable backend systems using Java and Spring Boot. Architect robust microservices solutions to support complex application requirements. Collaborate with the customer's team to review technical specifications and deliver high-quality code. Contribute expert insights to improve application performance, reliability, and security. Participate in code reviews and provide constructive feedback to peers. Document technical processes and solutions with clear, concise written communication. Troubleshoot, debug, and optimize backend systems as needed. Required Skills and Qualifications Expert proficiency in Java programming language. Hands-on experience with Spring Boot framework for backend development. Strong knowledge of microservices architecture and design principles. Demonstrated ability to write clean, maintainable, and efficient code. Exceptional written and verbal communication skills, with a keen attention to detail. Experience collaborating with remote teams in a fast-paced environment. Solid understanding of REST APIs, data structures, and backend best practices. Preferred Qualifications Exposure to cloud platforms such as AWS, Azure, or Google Cloud. Prior experience working on AI-driven or data-intensive projects. Background in high-availability or distributed systems.
All AI training roles we track · Every micro1 opportunity with filters
Rate, openings and requirements checked 2026-09-25 against micro1's own public postings.