Senior Software Engineer (Ruby), Security Platform: Authorization

Triwill Group; Northern (KY); Hybrid; USD 120,000 - 180,000; Full time

Job summary

Triwill Group is partnering with a global organization to hire a Senior Software Engineer (Ruby) for Security Platform: Authorization based in the United States. You will work on distributed authorization systems, primarily in Ruby on Rails, evolving toward a Rust-based policy engine and RBAC.

Join a mature codebase, own design through rollout, collaborate with auth, AI, platform teams, and contribute to secure, scalable access control.

Responsibilities

• Own significant technical workstreams from design through rollout, verification, and cleanup.
• Collaborate asynchronously with authentication, AI, platform, and modular-service teams.
• Build secure, scalable authorization mechanisms and contribute to modernization of the security platform.

Job description

Description:

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Software Engineer (Ruby), Security Platform: Authorization based in United States.

Join a highly distributed security engineering team responsible for the authorization systems that determine what users, tokens, and automated agents can access across a large-scale software platform. You’ll work primarily in Ruby on Rails while contributing to the evolution toward a modern authorization architecture built around a Rust policy engine, relationship-based authorization, and policy languages. This role combines hands‑on software engineering with security‑focused system design and long‑term platform modernization. You’ll own significant technical workstreams from design through rollout, verification, and cleanup. Your work will directly strengthen the security, reliability, and performance of authorization at scale. You’ll collaborate asynchronously with authentication, AI, platform, and modular‑service teams across a global organization. It’s an opportunity to shape foundational security infrastructure while solving complex problems in a mature, evolving codebase.