Java Engineer

SME Careers; Brasil; Remoto; BRL 83.000 - 165.000; Tempo parcial

Resumo da vaga

SME Careers is seeking a Senior Java Engineer to work fully remotely on an hourly basis. You will review AI-generated Java code, assess architectures, and create high-quality reference implementations and explanations.

You will evaluate solutions for accuracy, performance, and clarity, identify issues, and provide detailed feedback. This contractor role offers access to future opportunities through SME Careers' expert network.

Qualificações

• Bachelor's degree in CS or related field.
• 5+ years of professional software engineering in Java on production systems.
• Strong knowledge of Java core, concurrency, and collections.
• Extensive experience with Spring/Spring Boot, REST APIs, and microservices.
• Proficiency in system design, performance optimization, and clean code reviews.
• Fluent English, written and spoken (C1).

Responsabilidades

• Develop AI training content prompts and responses.
• Evaluate and rank AI responses for quality.
• Ensure model integrity by testing for inaccuracies or biases.

Conhecimentos

Java (5+ yrs)

Core Java

Concurrency

Java Collections

Spring/Spring Boot

REST APIs

Microservices

System design

Performance optimization

Design principles

English proficiency

Git

CI/CD

Automated testing

Containers

Code reviews

AI data training

Attention to detail

Formação

Bachelor’s degree in Computer Science or related field

Descrição da vaga

As a Senior Java Engineer, you will work remotely on an hourly paid basis to review AI-generated Java code, architectural solutions, and technical explanations, as well as generate high-quality reference implementations and reasoning steps. You will assess solutions for accuracy, clarity, and adherence to the prompt; identify errors in logic, performance, or design; fact-check technical information; write high-quality explanations and model solutions that demonstrate correct methods; and rate and compare multiple AI responses based on correctness and reasoning quality. This fully remote, hourly paid contractor role is with SME Careers, a fast-growing AI data services company and subsidiary of SuperAnnotate that provides AI training data to many of the world’s largest AI companies and foundation model labs, where your Java expertise will directly help improve the world’s premier AI models.

Important

There is no immediate project for this role; however, if qualified, you will be among the first experts we reach out to when relevant opportunities arise. This will also provide you with access to future projects available through our expert network.

Key Responsibilities

• Develop AI Training Content: Create detailed prompts in various topics and responses to guide AI learning, ensuring the models reflect a comprehensive understanding of diverse subjects.
• Optimize AI Performance: Evaluate and rank AI responses to enhance the model's accuracy, fluency, and contextual relevance.
• Ensure Model Integrity: Test AI models for potential inaccuracies or biases, validating their reliability across use cases.

Your Profile

• Bachelor’s degree or higher in Computer Science, Software Engineering, or a closely related technical field.
• 5+ years of professional software engineering experience, with significant hands-on work in Java on production systems.
• Deep understanding of core Java, concurrency primitives, and the Java Collections Framework.
• Extensive experience building and maintaining backend services using Spring or Spring Boot, REST APIs, and microservice architectures.
• Strong grasp of software design principles, system design, and performance optimization in distributed Java systems.
• Minimum C1 English proficiency (written and spoken), with the ability to write clear technical explanations and follow detailed English-language guidelines.
• Comfort working with modern engineering tooling such as Git, CI/CD pipelines, automated testing frameworks, and containerization technologies.
• Demonstrated experience conducting thorough code reviews and providing structured, constructive feedback to other engineers.
• Previous experience with AI data training, annotation, or evaluating AI-generated technical content is a strong plus.
• Highly detail-oriented and systematic, with a methodical approach to evaluating reasoning quality and identifying subtle issues in Java solutions.