Senior Software Engineer – Ruby on Rails, Sidekiq

RELX

Senior software engineer building Ruby-based clinical data platform APIs and internal tools for Elsevier’s healthcare information products. Supporting EHR integrations across 100+ hospitals.

Posted 8/12/2026full-timePhiladelphia • New York, Pennsylvania • 🇺🇸 United StatesSenior💰 $86,600 - $144,400 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in building and maintaining platform APIs and internal tooling, with a strong focus on end-to-end ownership of production systems and a methodical approach to debugging and problem-solving.

Highest-signal resume keywords

Ruby On RailsSidekiqAWSTypeScript FrontendSQL

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

API DevelopmentData QualityRelational Data ModelingIngestion PipelinesDebuggingProduction Systems OwnershipCI ImprovementsFramework UpgradesTransaction ManagementFailure Mode Analysis

Soft Skills

Patient DebuggingMethodical Approach

Tools & Technologies

AWS ECSAurora PostgreSQLCoding AgentsSpec-Driven Development

Industry Keywords

Operational ViewsVocabulary MappingSync ReliabilityObservability

Tech Stack

Tools & technologies

AWSPostgresRubyRuby on RailsSQLTypeScript

About the role

Key responsibilities & impact

Build the platform API alongside the squad lead, owning endpoints, contracts, and extraction work
Build internal tooling and frontends for vocabulary mapping, data quality, hospital onboarding, and operational views
Own platform subsystems end to end, including ingestion pipelines, sync reliability, and normalization
Perform framework and dependency upgrades, developer tooling, and CI improvements
Diagnose loosely specified production problems and implement durable fixes
Maintain correctness and observability as the platform gains new consumers
Pair with the engineer who built the sync and normalization systems and take ownership of a production pipeline, including its on-call
Ship platform API or internal tooling work and own a platform surface used by other teams

Requirements

What you’ll need

Current development skills with Ruby on Rails and Sidekiq on AWS, including ECS and Aurora PostgreSQL, with a TypeScript frontend
Backend fundamentals including queues, retries, transactions, and related failure modes
Deep SQL and relational data modeling skills, including checking query plans
End-to-end ownership of production systems, including on-call responsibilities
Patient, methodical debugging approach and comfort working in logs
Experience using coding agents and spec-driven development as part of AI-assisted development

Benefits

Comp & perks

Annual incentive bonus
Country-specific benefits
Accommodation or adjustment support during the hiring process