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

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

Job summary

AuraOne, Inc. is seeking a Senior Software Engineer, Backend (Node.js, TypeScript, Rust) for a remote contractor track. You will evaluate TypeScript outputs, reproduce failures, and write tests to guide model improvements.

The role emphasizes concise reasoning, thorough testing, and clear documentation for the modeling team. Responsibilities include grading solutions, writing minimal failing tests, and ranking paired solutions with rationale tied to a rubric.

Qualifications

• Strong day-job TypeScript experience—read, run, and debug unfamiliar code.
• Comfort writing concise unit tests that capture a single failure mode.
• Familiarity with a testing framework (pytest, Jest, or JUnit).
• Clear written reasoning—your review note must 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.

Responsibilities

• Reproduce TypeScript code outputs in a sandboxed environment for Senior Software Engineer, Backend assignments.
• Grade TypeScript engineering solutions for correctness, style, and edge-case handling.
• Write the smallest failing test that demonstrates a model output bug.
• Compare paired solutions and rank them with a rubric-based justification.
• Tag and score failure modes (compile error, runtime crash, edge cases).
• Document recurring code-generation failures for the modeling team.
• Calibrate reviews to maintain high inter-rater agreement.

Skills

TypeScript

Node.js

Rust

Unit testing

Code review

Debugging

Software engineering judgment

Async work

Tools

Jest

pytest

JUnit

Job description

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

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