Senior Software Engineer - Backend

Backend Engineer

You will design and build the backend systems powering the Quadrivia clinical AI platform—including high-availability services, event-driven architectures, data pipelines, and the orchestration layers used by our clinical AI agents.

This role is deeply hands-on, technical, and foundational to our reliability, safety, and performance.

Key Responsibilities

• Implement and maintain backend service (not tiny microservices—well-designed domain-driven boundaries).
• Build scalable systems for supporting customer features and operational platform.
• Implement resilient, high-throughput data pipelines.
• Ensure accuracy, safety, and compliance in all system interactions with clinical data.
• Own reliability: observability, fallback strategies.
• Collaborate closely with AI, Clinical, QA, and Security teams.
• Write clean, test-driven, maintainable code.
• Validate and own all AI-generated code contributions.

Required Experience

• Healthcare related experience working under SOC2/ISO27001, HIPAA/GDPR, or medical device regulatory requirements.
• 10+ years in backend engineering with high-scale distributed systems.
• Expert in Python, FastAPI, async systems, and event-driven architectures.
• Strong knowledge of object and relational database, caching, message stream, message queues.
• Engineering standards: DDD, CQRS, Design Patterns, SOLIP Principles, DRY, KISS, TDD.
• Cloud & DevOps literacy: GCP, Kubernetes, Docker, Terraform.
• Deep understanding of resilient systems, fault tolerance, and high availability.
• Excellent communicator—clear, structured, concise, preferably following S.T.A.R/S.A.R or related.
• Culture fit: kind, exceptionally smart, mission-driven, field expert.

Nice to Have

• Knowledge of Hexagonal Architecture, CQRS.
• Experience with ML Ops, RAG, LLM workflows, voice agents, STT/TTS diarization.
• Exposure to telephony/VoIP infrastructure.

What Success Looks Like

• Quadrivia's backend systems become a global reference for reliability, safety, and performance.
• Your services operate with >99.99% availability under strict regulatory constraints.
• Engineers can build new clinical workflows and agent capabilities rapidly and safely.
• AI-generated code is consistently elevated, corrected, and owned by you.