PayPal Sr Software Engineer Ruby Rails 

United States, Illinois, Chicago 

680941890

In your day-to-day role you will work ondesigning and building solutions for enterprise merchants with the objective of helping streamline onboarding, increase authorization rates, reduce costs, reduce fraud, and drive conversion.

We practice test-driven development and strongly encourage a culture of pair programming. Developers test, release, and monitor their own code.

We value unique perspectives brought by diverse backgrounds and experiences. A broad range of ideas and perspectives help us to create the best possible product.

What we look for in you:

• Minimum of 3 years of relevant work experience and abachelor's degree or equivalent experience.

• Track recordin designing and writing understandable, testable, and easy-to-maintain software.

• Ability and desire to work in our collaborative environment: open team room, pair programming and fluid interactions with all products and operations teams.

• High interest in Test Driven Development and specific experiences using a test heavy approach to solve problems and create solutions.

Platform Reliability & Observability

• Implement and enhance observability frameworks including logging, tracing, metrics, and alerting using Splunk, Datadog,Sentry, and PagerDuty.

• maintainhigh-availability architecturesacross AWS and GCP.

• Lead Incident and Problem Management practices — ensuring rapid detection, efficient triage, root cause analysis, and long-term remediation.

• Define and maintain SLIs/SLOs, build dashboards, and automate monitoring and alerting workflows.

• Contribute to on-call rotations and ensure incident response readiness across critical systems.

Core Development & Feature Delivery

• Design, build, andoptimize backend services and APIs usingRuby on Railsand PostgreSQL data systems.

• GCP BigQueryfor performance tuning, analytics, and data consistency across transactional systems.

• Collaborate with cross-functional teams to deliver secure, scalable, and reliable payment solutions.

• Participate in code reviews, design discussions, and technical planning to drive excellence in system architecture and development.

• Build automation, integration pipelines, and scalable componentsleveragingAWS/GCP cloud services.

Required Skills

• backend or platform engineering experiencein high-availability, transaction-heavy, or FinTech environments.

• Experience with Ruby on Rails for building backend APIs and services.

• Solid SQL development skills with PostgreSQL and GCP

• proficiency withAWS and GCP Cloudinfrastructure and services.

• expertise inobservability tools:Splunk, DataDog, PagerDuty.

• Proven experience in Incident Management and Problem Management from detection to post-incident review.

• Excellent troubleshooting, analytical, and collaboration skills across distributed systems.

Bonus / Preferred Skills

• Understanding of Network OSI model, SQS, Kafka, Data Replication, and API integrations.

• Experience designing scalable architectures in AWS.

• Exposure to AI/ML, particularly LLM (Large Language Model) integrations.

• ITIL v4 Certification ordemonstrated familiarity with IT service management best practices.

• teammodernizing and scaling a critical FinTech platform.

• Shape the future of our observability and reliability ecosystem, setting standards across the organization.

• Work in a culture that values technical excellence, ownership,pair programming, and continuous improvement.

• Competitive compensation, flexible hybrid workmodel, and real opportunities for career growth across platform and product domains.