Senior Backend Engineer (Python)

AI Trainer Jobs; United States; Remote; USD 152,000 - 207,000; Full time

Job summary

AI Trainer Jobs seeks a Senior Backend Engineer (Python) for a remote engineering review track. You will evaluate Python code, debug traces, and assess developer-facing AI outputs against correctness standards.

You will reproduce failures, write the unit tests the model should have written, and explain fixes so the modeling team can target the gap. This is an hourly contract, US-eligible, remote work.

Qualifications

• Strong day-job Python experience and debugging unfamiliar code.
• Ability to write concise unit tests for a single failure mode.
• Familiarity with testing frameworks (pytest, Jest, or JUnit).
• Clear written reasoning to persuade another senior engineer.
• Available for at least 10 hours per week.
• Prior code-review or technical interview grading experience is a plus.

Responsibilities

• Run and reproduce Python code outputs in a sandboxed environment.
• Grade Python solutions for correctness, style, and edge-case handling.
• Write minimal failing tests that demonstrate bugs.
• Compare paired solutions with a written rationale tied to the rubric.
• Tag failure modes with severity scores.

Skills

Python

Unit testing

Code review

Testing frameworks

Technical interviewing

Debugging

Tools

pytest

Job description

Senior Backend Engineer (Python) is a remote engineering review track for evaluating Python code, debugging traces, and developer-facing AI outputs against real-world correctness standards. Reviewers reproduce failures, write the unit test the model should have written, and explain the fix so the modeling team can target the gap.

Category: Coding, SWE & Agent Evaluation · Pay: $130 / hr · Location: Remote — US-eligible · Contractor

Senior Backend Engineer (Python) is a remote engineering review track for evaluating Python code, debugging traces, and developer-facing AI outputs against real-world correctness standards.

About the role

Senior Backend Engineer (Python) is a remote engineering review track for evaluating Python code, debugging traces, and developer-facing AI outputs against real-world correctness standards. Reviewers reproduce failures, write the unit test the model should have written, and explain the fix so the modeling team can target the gap.
Python model quality lives or dies on whether the generated code actually compiles, passes tests, and handles edge cases. AuraOne pairs experienced engineers with the modeling team to grade outputs the way a code reviewer would.
Judge generated code and software engineering agents. Read their debugging traces.

Responsibilities

• Run and reproduce Python code outputs in a sandboxed environment for Senior Backend Engineer (Python) assignments.
• Grade python engineering solutions for correctness, style, and edge-case handling.
• Write minimal failing tests that demonstrate the bug a model output missed.
• Compare paired solutions and rank them with a written rationale tied to the rubric.
• Tag failure modes (compile error, runtime crash, off-by-one, security issue) with severity scores.

Role details

Track Code review & evaluation Work model Remote · Independent specialist contractor Compensation Hourly rate confirmed after the interview process. Eligible from US

What you should bring

• Strong day-job Python experience — you can read, run, and debug unfamiliar code for Senior Backend Engineer (Python) work.
• Comfort writing concise unit tests that capture a single failure mode.
• Familiarity with a testing framework. pytest, Jest, or JUnit. Go test, RSpec, or whatever you use.
• Clear written reasoning — your review note has to convince another senior engineer.
• Reliable async availability for at least 10 hours per week.
• Prior code-review or technical-interview-grading experience is a plus.

Role signals

Example tasks

• Reproduce a generated Python solution to a coding task, run the test suite, and grade it.
• Write the smallest failing test that demonstrates a model's edge-case bug.
• Compare two paired solutions and rank them with a written rationale tied to the rubric.
• Triage a security issue surfaced by a model and document the patch the model should have produced.

Useful experience

• Open-source contributions or a public portfolio that demonstrates production-quality code.
• Experience with Python's standard tooling, linters, and idiomatic style guides.
• Familiarity with security-review checklists (OWASP, CWE) and AppSec patterns.

Compensation and schedule

Hourly rate confirmed after the interview process.
Expected arrangement: contractor , with program-defined task volume and review pacing. Placement depends on current program demand and reviewer confirmation.

Skills used in matching

• Code review
• Debugging
• Unit testing
• Software engineering judgment
• Python engineering
• Software engineering

Application boundary

Creating a specialist profile records your experience and preferences. Starting role intake is a separate action that attaches this role to your candidate record.

Specialist intake

The intake preserves your chosen role, the visible terms, and source attribution for reviewer context.

• 01 Confirm profile and eligibility details.
• 02 Attach this role deliberately.
• 03 Receive a human review decision or follow-up.

Placement timing depends on program demand and reviewer confirmation.