Software Developer - Fully Remote | Upto $65/hr

mercor; United States; Remote; USD 69,000 - 90,000; Full time

Job summary

Mercor is seeking a Software Engineer, Full Stack (Python, Java, Rust, C#, C++) for contract work. The role is remote, with a 40-hour week, and involves building end-to-end full-stack applications, APIs, and tools to advance frontier model capabilities.

Requirements include 3+ years in production software, proficiency in at least one listed language plus a second language, and strong written communication to document decisions and progress.

Qualifications

• 3+ years of dedicated professional experience building and shipping production software at a recognized, top-tier organization.
• Experience in Python, Java, Rust, C#, or C++, plus working proficiency in a second language.
• Hands-on experience across the stack: backend services and APIs, a modern front-end framework (React or equivalent), databases, and cloud deployment.
• Demonstrated ability to onboard onto an unfamiliar codebase and deliver working code quickly with minimal ramp-up.
• Ability to engage reliably for at least 40 hours/week during weekdays.

Responsibilities

• Build and ship full-stack applications, services, and internal tools using Python, Java, Rust, C#, C++, or TypeScript.
• Integrate pre-release model APIs into working software, including tool interfaces, evaluation harnesses, and telemetry.
• Diagnose and document model and integration failure modes, translating engineering observations into clear written feedback for the research team.
• Prototype quickly against shifting requirements, delivering working increments with limited up-front specification.
• Collaborate with the engineering manager and other engineers to maintain consistency in code quality, architecture, and technical documentation.

Skills

3+ years experience

Backend services

Frontend frameworks

Onboard quickly

Strong written communication

Tools

React

Databases

Cloud deployment

Job description

About the job Mercor connects elite creative and technical talent with leading AI research labs. Headquartered in San Francisco, our investors include Benchmark , General Catalyst , Peter Thiel , Adam D'Angelo , Larry Summers , and Jack Dorsey . Position: Software Engineer, Full Stack (Python, Java, Rust, C#, C++) Type: Contract Compensation: $50–$65/hour Location: Remote Commitment: 40 hours/week

Role Responsibilities

• Build and ship full-stack applications, services, and internal tools using Python , Java , Rust , C# , C++ , or TypeScript to exercise frontier model capabilities end to end.
• Integrate pre-release model APIs into working software, including tool interfaces, evaluation harnesses, and telemetry.
• Diagnose and document model and integration failure modes, translating engineering observations into clear written feedback for the research team.
• Prototype quickly against shifting requirements, delivering working increments with limited up-front specification.
• Collaborate with the engineering manager and other engineers to maintain consistency in code quality, architecture, and technical documentation.

Qualifications

• 3+ years of dedicated professional experience building and shipping production software at a recognized, top-tier organization.
• Production experience in at least one of Python , Java , Rust , C# , or C++ , plus working proficiency in a second language.
• Hands-on experience across the stack: backend services and APIs, a modern front-end framework ( React or equivalent), relational or document databases, and cloud deployment.
• Demonstrated ability to onboard onto an unfamiliar codebase and deliver working code quickly with minimal ramp-up.
• Ability to engage reliably for at least 40 hours/week during weekdays.
• Strong written communication skills and the ability to explain complex technical decisions clearly.

Compensation & Legal

• W-2 employment with Cincinnatus LLC .
• Paid weekly via Stripe Connect .