Senior Real-Time A/V Engineer — WebRTC & Low-Latency

Knightscope, Inc.; Sunnyvale (CA); On-site; USD 155,000 - 210,000; Full time

Benefits offered by this job

Stock options

Medical insurance

Dental insurance

Vision insurance

401(k) plan

Paid time off

Job summary

Knightscope, Inc. in Sunnyvale, CA is seeking two Senior Audio/Video Engineers to own the real-time A/V stack across the ICM and Signals platforms. You will handle WebRTC ingest, GStreamer pipelines, and low-latency audio processing for distributed robot video feeds.

Responsibilities include designing end-to-end video pipelines, SIP/VoIP integration, and making architectural decisions while mentoring junior engineers. On-site role with strong emphasis on performance and reliability.

Qualifications

• 7–10 years of software engineering experience specializing in real-time audio and video systems in production environments.
• Deep expertise in WebRTC — signaling, ICE/STUN/TURN, DTLS-SRTP, RTP/RTCP, and media server architecture (Janus, mediasoup, or equivalent).
• GStreamer development and debugging of multi-branch media pipelines; plugins and elements.
• C/C++ (C++11/14/17) for performance-critical media code; Python for tooling.
• SIP/VoIP protocols and stacks (pjsip, Asterisk, or equivalent) and low-latency audio processing.
• Video codecs (H.264/H.265, VP9, AAC, Opus) and streaming protocols (RTSP, RTMP, HLS, RTP).
• Experience with AWS media services (S3, Kinesis, Polly) and cloud-based media architectures.
• Familiarity with hardware-accelerated video processing (NVIDIA NVENC/NVDEC, V4L2).
• BS in Computer Science, Electrical Engineering, or equivalent.

Responsibilities

• Design, build, and maintain the end-to-end real-time video pipeline: WebRTC/RTSP/RTMP ingest, transcoding, multi-stream rendering for up to 10 feeds.
• Architect and optimize GStreamer-based pipelines for capture, processing, recording, and cloud upload (S3).
• Own the full audio subsystem: real-time two-way audio, SIP/VoIP integration, text-to-speech, and sub-200ms latency target.
• Implement and optimize WebRTC signaling, ICE, DTLS-SRTP, and media server components for distributed deployments.
• Profile, debug, and tune A/V pipeline performance under multi-robot load and variable networks.
• Build Make-a-Clip functionality to extract, annotate, and store video segments.
• Define and maintain A/V API contracts; participate in code reviews and docs.
• Mentor junior engineers and contribute to architectural decisions across the A/V stack.

Skills

Real-time audio/video systems

WebRTC

GStreamer

C/C++

Python

SIP/VoIP

Video codecs

Streaming protocols

AWS media services

NVENC/NVDEC

Education

BS in Computer Science or Electrical Engineering

Tools

Janus

mediasoup

Job description

Knightscope, Inc. in Sunnyvale, CA is seeking two Senior Audio/Video Engineers to own the real-time A/V stack across the ICM and Signals platforms. You will handle WebRTC ingest, GStreamer pipelines, and low-latency audio processing for distributed robot video feeds.

Responsibilities include designing end-to-end video pipelines, SIP/VoIP integration, and making architectural decisions while mentoring junior engineers. On-site role with strong emphasis on performance and reliability.