Remote Senior Ruby Engineer - Authorization Platform

JobCubby; Northern (KY); Hybrid; USD 139,000 - 235,000; Full time

Benefits offered by this job

Fully remote work in US

Equity compensation

Employee Stock Purchase Plan

PTO and parental leave

Growth and Development Fund

Diversity and inclusion groups

Asynchronous global team

Job summary

JobCubby in the United States seeks a Senior Software Engineer (Ruby) to lead authorization efforts within a large Rails application. You will design, implement, and operate fine-grained permissions and robust authorization checks across REST and GraphQL services as part of a modern security platform.

You will contribute to a migration toward a shared authorization platform using Rust, gRPC, and policy languages, collaborating with authentication, platform, and AI teams across a global

Qualifications

• Significant professional experience building and operating production Ruby on Rails applications.
• Demonstrated experience designing or implementing authorization systems, including role-based access control and fine-grained permissions.
• Strong security mindset with attention to blast radius when making decisions.
• Experience working safely within large, long-lived codebases with migrations and feature flags.
• Knowledge of GraphQL and API authorization patterns.

Responsibilities

• Design, implement, and operate authorization capabilities within a large Ruby on Rails application, including permission checks that may execute hundreds of times within a single request.
• Own technical workstreams end to end from problem definition through deployment and cleanup.
• Develop and expand fine-grained permissions for tokens and roles.
• Strengthen authorization enforcement across GraphQL and REST APIs and improve security, reliability, and performance.
• Refactor policy code to support new policy engine without changing customer behavior.
• Contribute to migration toward a shared authorization platform using Rust, gRPC, and policy languages.
• Partner with authentication, platform, AI, and modular-service teams to define interfaces and adoption plans.
• Address technical debt while preserving backward compatibility and safety.
• Document architectural decisions and design tradeoffs.

Skills

Ruby on Rails

Security engineering

API design

Performance at scale

Tools

Ruby on Rails

GraphQL

Go

gRPC

Protocol Buffers

Rust

Cedar

Job description

JobCubby in the United States seeks a Senior Software Engineer (Ruby) to lead authorization efforts within a large Rails application. You will design, implement, and operate fine-grained permissions and robust authorization checks across REST and GraphQL services as part of a modern security platform.

You will contribute to a migration toward a shared authorization platform using Rust, gRPC, and policy languages, collaborating with authentication, platform, and AI teams across a global