Ruby on Rails Developer

**Senior Software Engineer I, L3 Messaging Team (Remote)** We're recruiting a Senior Software Engineer I to own the technical direction of a mission\-critical messaging platform serving hundreds of healthcare organizations across the United States. **THE ROLE** Our client is a fast\-growing, mission\-driven organization transforming patient engagement at scale. They've built the leading platform powering communications for underserved populations, with proven impact reaching millions. Now they're looking for a seasoned backend engineer to lead their Messaging Team technical direction and mentor the next generation of engineering talent. You'll own complex features end\-to\-end, drive architectural decisions that shape how millions of patient communications are delivered, and share team lead responsibilities with your peers. This is a highly visible, technically autonomous role with direct impact on health equity outcomes. **WHO WE'RE LOOKING FOR** * 5\+ years hands\-on backend engineering with Ruby on Rails at scale * Deep experience building, maintaining, and scaling APIs and distributed systems * Advanced SQL skills and comfort working with large, complex datasets * Proven ability to independently own complex projects end\-to\-end and mentor junior engineers * Data\-driven mindset you rely on evidence, not intuition * Excellent communicator (especially in fully remote environments) * Passionate about mission\-driven work and advancing health equity **BONUS POINTS** * Experience with Twilio, RCS, or MMS messaging platforms * Familiarity with healthcare compliance (TCPA, consent workflows, carrier regulations) * Tech stack: React, PostgreSQL, Google Cloud, Sidekiq * Event\-driven architecture or high\-throughput message delivery pipelines **WHAT YOU'LL DO** * Own and drive the technical direction of key messaging platform features * Design and build backend messaging systems (delivery pipelines, consent management, scheduling orchestration, API integrations) * Mentor L2 engineers, lead technical design discussions, and set engineering standards * Contribute to architectural decisions that shape messaging infrastructure at scale * Participate in on\-call rotations (PagerDuty) and help improve team processes * Work cross\-functionally with Product, Customer Success, and Data teams **YOUR IMPACT** * Month 1: Master the platform architecture and contribute to technical design discussions * Month 3: Independently deliver complex features with meaningful impact on patient outcomes * Month 6: Be recognized as a technical leader driving strategic initiatives across the engineering department