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Invisible Technologies

Backend Engineering Specialist – Freelance AI Trainer Project

Invisible Technologies

. Review and annotate AI-generated code .

Posted 10/31/2026contractRemote • United StatesMid-LevelSenior💰 $8 - $65 per hourWebsite

Core Competencies

Role fit
Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates strong backend engineering expertise with proficiency in Python, Java, Go, or C++, and experience in API design, distributed systems, and cloud services. Capable of evaluating AI-generated code for correctness and efficiency while collaborating effectively to refine engineering guidelines.

Highest-signal resume keywords
Backend Engineering ExperienceProficiency In PythonExperience With DjangoAPI Design ExperienceAttention To Detail

ATS Keywords

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Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills
Backend EngineeringPythonJavaGoC++DjangoSpringExpressSQLNoSQL
Soft Skills
Clear Communication SkillsProblem-Solving AbilityAttention To Detail
Tools & Technologies
API DesignDistributed SystemsCloud ServicesDockerKubernetes

Tech Stack

Tools & technologies
CloudDistributed SystemsDjangoDockerJavaKubernetesNoSQLPythonSpringSQLC++Go

About the role

Key responsibilities & impact
  • Review and annotate AI-generated code
  • Evaluate and refine code outputs
  • Assess correctness, efficiency, scalability, and backend engineering best practices
  • Identify and document error patterns
  • Collaborate to refine prompts, evaluation methods, and engineering guidelines
  • Contribute backend engineering expertise to AI training data

Requirements

What you’ll need
  • Strong backend engineering experience
  • Proficiency in backend languages such as Python, Java, Go, or C++
  • Experience with frameworks such as Django, Spring, or Express
  • Experience with SQL/NoSQL databases
  • Clear communication skills
  • Problem-solving ability
  • Attention to detail
  • Experience with API design, distributed systems, cloud services, or containerization (Docker/Kubernetes) is a strong plus

Benefits

Comp & perks
  • No company-sponsored health insurance or PTO apply to contractors
  • Contractor supplies a secure computer
  • Contractor supplies a stable internet connection