Software Engineer (AI Training)

August 31, 2026

Remote

Junior

Barcelona, Spain

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English is required

Description

Alignerr is hiring a Software Engineer for AI Training to help train AI systems by writing, reviewing, and evaluating AI-generated code. The role involves providing expert feedback to make AI coding assistants smarter, safer, and more reliable. It is a fully remote, flexible contract position with 10–40 hours per week.

Responsibilities

Write, debug, and optimize code in various languages and frameworks
Review AI-generated code for correctness, efficiency, and best practices
Identify bugs, security issues, and performance bottlenecks in AI outputs
Provide detailed feedback on why code works or doesn't work
Design coding prompts and edge-case scenarios to test AI capabilities
Compare and rank AI-generated solutions based on quality
Work independently and asynchronously on own schedule

Requirements

Proficient in multiple programming languages such as Python, JavaScript, Java, C++, Go, TypeScript
Solid understanding of data structures, algorithms, and software design principles
Able to read, write, and reason about code with clarity and precision
Strong problem-solving skills and systematic debugging approach
Clear written communication to explain technical decisions
Self-motivated and reliable for independent work
Bachelor's degree in Computer Science or equivalent practical experience

Conditions

Fully remote work with flexible hours from anywhere
Freelance autonomy with intellectually stimulating and high-impact tasks
Work on cutting-edge AI projects with leading research labs
Potential for ongoing work and contract extensions
Hourly contract with 10 to 40 hours per week commitment

PythonJavaScriptJavaC++GoTypeScriptaiAI/MLLLMsPrompt Engineering

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