Senior Software Engineer, Backend (Node.js, TypeScript, Rust) —

AuraOne; United States; Remote; USD 69,000 - 110,000; Full time

Job summary

AuraOne is seeking a Senior Software Engineer, Backend, to work on AI Code Review tasks in a remote US-eligible contractor role. You will reproduce TypeScript code outputs in a sandbox, run tests, and provide clear rationales.

You will grade solutions for correctness, write minimal failing tests, and document recurring failures to guide model improvements. Strong TypeScript, Node.js, and Rust skills plus testing experience are required.

Qualifications

• Proficient in TypeScript and Node.js with strong backend experience.
• Experience writing concise unit tests that cover edge cases.
• Familiarity with multiple testing frameworks (Jest, pytest, JUnit).

Responsibilities

• Run and reproduce TypeScript code outputs in a sandboxed environment for AI Code Review tasks.
• Grade TypeScript solutions for correctness, style, and edge-case handling.
• Write minimal failing tests demonstrating a model's bug.
• Compare paired solutions and rank them with rubric-based rationale.
• Tag failure modes with severity scores.
• Document recurring code-generation failures for model improvements.
• Calibrate against gold-standard reviews to maintain inter-rater agreement.

Skills

TypeScript

Node.js

Rust

Unit testing

Code review

Debugging

Tools

Jest

pytest

JUnit

Job description

Category: Coding, SWE & Agent Evaluation · Pay: $50–$80 / hr · Location: Remote — US-eligible · Contractor

Senior Software Engineer, Backend (Node.js, TypeScript, Rust) — AI Code Review is a remote engineering review track for evaluating TypeScript 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.

Why this role matters

TypeScript 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.

Responsibilities

• Run and reproduce TypeScript code outputs in a sandboxed environment for Senior Software Engineer, Backend (Node.js, TypeScript, Rust) — AI Code Review assignments.
• Grade typescript 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.
• Document recurring code-generation failures so the modeling team can target them.
• Calibrate against gold-standard reviews to keep inter-rater agreement above target.

Qualifications

• Strong day-job TypeScript experience — you can read, run, and debug unfamiliar code for Senior Software Engineer, Backend (Node.js, TypeScript, Rust) — AI Code Review 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.

Example tasks

• Reproduce a generated TypeScript 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.

Nice to have

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

Skills

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

Work model

Remote — US-eligible. Remote · Independent specialist contractor. Employment type: CONTRACTOR. Applicants must be authorized to work from US.

Compensation

$50–$80 / hr