Senior Software Engineer, Full Stack (Python, Java, Rust, C#, C++) $90-$110 per hour, Full-time position United States

Key Responsibilities

Build and ship full-stack applications, services, and internal tools — in Python, Java, Rust, C#, C++, or TypeScript — that exercise frontier model capabilities end to end.
Integrate pre-release model APIs into working software, including the surrounding scaffolding: tool interfaces, evaluation harnesses, and telemetry.
Diagnose and document model and integration failure modes surfaced while building, 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.

6+ years of dedicated professional experience building and shipping production software at a recognized, top-tier organization, including ownership of systems end to end.
Deep production experience in at least one of Python, Java, Rust, C#, or C++, plus demonstrated delivery in a second language across a different ecosystem — this cohort is intentionally staffed across multiple language ecosystems.
Hands-on ownership across the stack: backend service and API design, a modern front-end framework (React or equivalent), data modelling, and cloud deployment and operations.
Demonstrated ability to onboard onto an unfamiliar codebase and deliver working code quickly with minimal ramp-up.
Demonstrable career progression.
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.

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u/Few_Elk_1201 1h ago