Senior Ruby on Rails Engineer — Platform API & Data

Elsevier; Philadelphia (Philadelphia County); On-site; USD 87,000 - 144,000; Full time

Job summary

Elsevier's Wellsheet team is hiring a Senior Software Engineer to own the platform API and internal tooling for a clinical data platform used across Epic, Cerner, and Athena integrations. You will build end-to-end platform subsystems and support real-time EHR synchronization and data normalization for 100+ hospitals.

Working in a senior, small-team setting, you will drive platform reliability, tooling, and observability while shipping significant production features within a rapidly evolving

Qualifications

• Current development skills with Ruby on Rails with Sidekiq on AWS (ECS, Aurora PostgreSQL), with a TypeScript frontend.
• Possess backend fundamentals: queues, retries, transactions, and the failure modes between them.
• Have real depth in SQL and relational data modeling, and the instinct to check the query plan.
• Possess End-to-end ownership of production systems, including the unglamorous parts.
• Have a debugging temperament: patient, methodical, happy in logs.
• AI-assisted development as a default: coding agents and spec-driven development are already part of how you work

Responsibilities

• Owning platform subsystems end to end: ingestion pipelines, sync reliability, normalization.
• Keeping the stack healthy: major framework and dependency upgrades, developer tooling, and the CI that keeps a small team fast.
• Taking loosely specified problems through diagnosis, design, and durable fixes.
• Keeping correctness and observability strong as the platform takes on new consumers.
• Pair with the engineer who built our sync and normalization systems and take ownership of one production pipeline, including its on-call.
• Your first shipped work will be a piece of the platform API or the internal tooling around it.

Skills

Ruby on Rails

Sidekiq

AWS ECS

Aurora PostgreSQL

TypeScript frontend

backend fundamentals

SQL

debugging temperament

end-to-end ownership

AI-assisted development

Tools

AWS

PostgreSQL

TypeScript

Job description

Elsevier's Wellsheet team is hiring a Senior Software Engineer to own the platform API and internal tooling for a clinical data platform used across Epic, Cerner, and Athena integrations. You will build end-to-end platform subsystems and support real-time EHR synchronization and data normalization for 100+ hospitals.

Working in a senior, small-team setting, you will drive platform reliability, tooling, and observability while shipping significant production features within a rapidly evolving