Senior AI Platform Engineer — Ruby/TS

Elsevier

Philadelphia (Philadelphia County)

On-site

USD 95,000 - 159,000

Full time

11 days ago

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Job summary

Wellsheet at Elsevier is seeking a Senior Software Engineer to own agent-powered features end to end, from prompt design to UI delivery, in a platform that integrates with Epic, Cerner, and Athena. You’ll work on real-time EHR sync and AI-assisted clinical context used at the point of care.

Join a small, senior engineering team within Elsevier's Clinical Solutions group, shipping a production AI experience to hospital clients in 2027, with opportunities to shape the platform API and eval

Qualifications

Proficient in TypeScript and Ruby; treat prompts and models as system components.
End-to-end ownership from backend to UI with the judgment to keep the seams clean.
Instinct to measure: prefer small honest eval over big demos.
Comfort with ambiguity; no established playbook yet.
AI-assisted development as a default; coding agents and spec-driven development are standard.

Responsibilities

Own agent-powered features end to end: prompt and orchestration logic, backend plumbing, and the UI where the output lands.
Take loosely specified feature ideas through design, implementation, and measured rollout.
Build and extend eval coverage for the features you ship; nothing ships unmeasured.
Build new ways for agents to present their work, from richer in-chat results to interactive views.
Improve the synthetic data simulator and the tooling around it.
Work across squad boundaries with Product to land agent features in the clinical experience.
Pair with the engineer leading our agent work, ship an improvement to a production agent feature end to end, and add the eval coverage that proves it.