Staff Software Engineer, Mobile (Android, Kotlin, Full Stack)

AuraOne; United States; Remote; USD 69,000 - 124,000; Full time

Job summary

AuraOne is seeking a Staff Software Engineer, Mobile (Android, Kotlin, Full Stack) for a remote, US-eligible contractor role in evaluating Kotlin code and AI outputs. Reviewers reproduce failures, write tests, and explain fixes to guide the modeling team.

The role emphasizes code quality, edge-case handling, and clear written rationale to support senior engineering decisions. Remote work is allowed with US eligibility and async availability for 10 hours/week.

Qualifications

• Strong day-job Kotlin experience — you can read, run, and debug unfamiliar code.
• Comfort writing concise unit tests that capture a single failure mode.
• Familiarity with a testing framework (pytest, Jest, JUnit, etc.).
• 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.

Responsibilities

• Run and reproduce Kotlin code outputs in a sandboxed environment for Staff Software Engineer, Mobile (Android, Kotlin, Full Stack) assignments.
• Grade kotlin 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.

Skills

Code review

Debugging

Unit testing

Software engineering

Kotlin engineering

Job description

Category: Coding, SWE & Agent Evaluation · Pay: $50–$90 / hr · Location: Remote — US-eligible · Contractor

Staff Software Engineer, Mobile (Android, Kotlin, Full Stack) is a remote engineering review track for evaluating Kotlin 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

Kotlin 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 Kotlin code outputs in a sandboxed environment for Staff Software Engineer, Mobile (Android, Kotlin, Full Stack) assignments.
• Grade kotlin 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 Kotlin experience — you can read, run, and debug unfamiliar code for Staff Software Engineer, Mobile (Android, Kotlin, Full Stack) 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 Kotlin 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 Kotlin'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
• Kotlin engineering

Work model

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

Compensation

$50–$90 / hr