Principal Software Engineer
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Job Description
Principal Software Engineer responsible for architecting patient-facing mental healthcare tools for Rula. Bridging application architecture and AI implementation to scale mental health services.
Responsibilities:
- We are seeking a Principal Software Engineer (L6) to architect Rula’s next generation of patient-facing mental healthcare tools.
- This person will be the technical anchor for the Patients Group, owning the systems that power the entire patient lifecycle—from initial signup, registration, and intelligent appointment scheduling, all the way through to pre- and post-visit experiences.
- You will bridge the gap between robust, high-traffic consumer application architecture and advanced "Applied AI" implementation.
- You will own the design of resilient full-stack systems alongside autonomous agentic workflows and RAG pipelines that help us scale our mission to millions of patients.
- If you are passionate about building highly reliable consumer funnels, moving beyond simple AI prompting to build observable, cost-efficient systems, and elevating the engineering culture at a staff/principal level, this is the role for you.
Requirements:
- 10+ years of professional software engineering experience, with a strong focus on consumer-facing full-stack application development and distributed systems.
- Expert-level experience integrating AI into user experiences, including designing RAG pipelines, vector orchestration, and agentic loops.
- Proven track record of architecting full-stack AI systems that survive production-grade traffic (expertly managing UI latency, API costs, and system reliability).
- Deep foundational knowledge bridging modern frontend/backend ecosystems (e.g., React, Node/Python) with LLM infrastructure (e.g., tokenization, MLOps observability).
- Demonstrated technical leadership in driving complex consumer product initiatives from conception to launch, mentoring cross-functional engineering teams.
- Familiarity with UX/UI best practices for AI interfaces (e.g., streaming responses, optimistic UI, and managing AI hallucinations gracefully in the frontend).
- Advanced expertise in modern full-stack architectural patterns (e.g., event-driven systems, microservices, edge computing) for scaling resilient and low-latency consumer applications.
- Hands-on experience implementing security and privacy measures for user data in LLM contexts (e.g., PII redaction, prompt injection defense).
- Previous experience navigating ambiguity and scaling architecture at a high-growth startup.
- Experience in consumer marketplace or digital health businesses.
Benefits:
- 100% remote work environment: Working hours to support a healthy work-life balance, ensuring you can meet both professional and personal commitments (must be based in United States, currently not hiring in Hawaii)
- Attractive pay and benefits: Full transparency of pay ranges regardless of where you live in the United States
- Comprehensive health benefits: Medical, dental, vision, life, disability, and FSA/HSA
- 401(k) plan access: Start saving for your future
- Generous time-off policies: Including 2 company-wide shutdown weeks each year for self-care (for most employees)
- Paid parental leave: Available for all parents, including birthing, non-birthing, adopting, and fostering
- Employee Assistance Program (EAP): Support for your mental and physical health
- New hire home office stipend: Set up your workspace for success
- Quarterly department stipend: Fund team-building activities or in-person gatherings
- Wellness events and lunch & learns: Explore a variety of engaging topics
- Community and employee resource groups: Participate in groups that celebrate employee identity and lived experiences, fostering a sense of community and belonging for all
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