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Staff Backend Engineer, Applied AI - Detect

Sage

$190,000 - $245,000
Oct 6, 2025
New York, NY, US
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Sage is looking to improve care and quality of life for older adults, starting with those residing in senior living facilities, by creating a modern fall prevention and emergency response system.

Requirements

  • 3+ years of professional backend development experience
  • Strong proficiency in Kotlin, Java, or similar JVM languages
  • Experience building and maintaining distributed systems and RESTful APIs
  • Demonstrated ability to debug complex production issues and optimize system performance
  • Experience with cloud platforms (AWS or GCP) and containerized deployments
  • Experience with video processing, streaming protocols (RTSP/RTMP), or FFmpeg
  • Hands-on experience with prompt engineering, multi-modal foundational models, and LLM/VLM optimization techniques

Responsibilities

  • Design, build, and optimize real-time video processing pipelines that handle hundreds of concurrent streams, implementing fault tolerance and auto-recovery mechanisms
  • Debug and resolve complex distributed systems challenges including VPN connectivity, memory optimization, concurrency issues, and stream processing failures across multiple facilities
  • Improve system scalability and stability by architecting service separations, implementing proper monitoring and alerting, and ensuring 99.9% uptime
  • Experiment with AI model integration, including prompt engineering for multi-modal models and implementing cost-optimization strategies like intelligent gating and caching
  • Develop features and tools that surface actionable insights about resident activities, helping caregivers provide more timely and effective care
  • Architect privacy-preserving video storage and replay systems, including de-identification pipelines for building long-term datasets
  • Work cross-functionally with product and engineering teams to expand the platform's capabilities from acute event detection to long-term health insights

Other

  • 3+ years of professional experience
  • Competitive base compensation along with stock options
  • Fully-paid health and dental insurance coverage for all employees
  • Take as you need time off policy, in addition to 7 paid holidays and a company wide winter break during the holidays
  • Background check may be required