Senior Ruby on Rails Platform Engineer with Sidekiq

RXinsider LTD.; Philadelphia, Northern (Philadelphia County, KY); Hybrid; USD 140,000 - 180,000; Full time

Job summary

Elsevier is seeking a Senior Software Engineer to build the platform API alongside the squad lead. You will own endpoints, contracts, and the extraction work that turns internal seams into a real interface.

You will also build internal tooling for managing the platform, frontends included: vocabulary mapping, data quality, hospital onboarding, and the operational views that let a small team run 100+hospitals.

Qualifications

• Must have strong Rails with Sidekiq experience on AWS (ECS) and a TypeScript frontend.
• Solid backend fundamentals: queues, retries, transactions, and failure modes.
• Deep knowledge of SQL and relational data modeling, with ability to inspect query plans.
• End-to-end ownership of production systems, including the unglamorous parts.
• Comfort debugging, logs-driven, patient and methodical.

Responsibilities

• Own platform subsystems end to end: ingestion pipelines, sync reliability, normalization.
• Keep the stack healthy with framework and dependency upgrades and robust developer tooling.
• Diagnose and fix loosely specified problems (e.g. vendor FHIR quirks) with durable solutions.
• Maintain strong correctness and observability as new consumers join the platform.
• Collaborate with the leading engineer to own a production pipeline and a platform surface used by other teams.

Skills

Ruby on Rails with Sidekiq

TypeScript frontend

Backend fundamentals

SQL and data modeling

End-to-end ownership

Debugging/log analysis

AI-assisted development

Tools

AWS (ECS)

Aurora PostgreSQL

CI/CD tooling

Job description

Elsevier is seeking a Senior Software Engineer to build the platform API alongside the squad lead. You will own endpoints, contracts, and the extraction work that turns internal seams into a real interface.

You will also build internal tooling for managing the platform, frontends included: vocabulary mapping, data quality, hospital onboarding, and the operational views that let a small team run 100+hospitals.