Software Engineer | AI Training Data & Evals Lab

Xapply; Northern (KY); Hybrid; USD 90,000 - 130,000; Full time

Job summary

Xapply is seeking a Software Engineer for its AI Training Data & Evals Lab in the United States. You will build and operate production systems that researchers rely on to develop and assess frontier AI capabilities.

The role spans evaluation harnesses, backend services, data pipelines, training environments, and tools to make experimentation reliable and repeatable. You will own core systems from day one in a lean, async-first, highly collaborative environment.

Job description

Description:

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Software Engineer | AI Training Data & Evals Lab based in United States.

This is a broad engineering role at the intersection of platform development, AI evaluation, and experimentation infrastructure.
You will build and operate production systems that researchers and operators rely on to develop and assess frontier AI capabilities.
Your work will include evaluation harnesses, backend services, data pipelines, training environments, and tools that make experimentation more reliable and repeatable.
You will have meaningful ownership from the start, with an expectation of delivering production improvements and becoming a trusted owner of core systems.
The environment is lean, async-first, and highly collaborative, with an emphasis on clear communication, sound technical judgment, and dependable execution.
You will work on practical engineering challenges closely connected to AI research while helping transform expert work into high-quality training and evaluation data.
This opportunity is well suited to a strong builder who enjoys autonomy, distributed systems, and working on infrastructure that directly influences how AI systems are evaluated and improved.