Senior Software Engineer (Audio & DSP) - Drive Through AI

Checkmate is the leading platform that connects restaurant POS systems with online ordering channels, automating workflows and enabling seamless order flow. We are now expanding into voice-driven ordering experiences through our Drive Through AI (DTAI) product line, which brings advanced AI and speech technologies to drive-thru lanes and phone ordering systems.

As a Senior Software Engineer (Audio & DSP), you will play a critical role in shaping the real-time speech processing stack for DTAI. This includes developing algorithms and systems that can perform reliably in noisy, multi-speaker, real-world environments. You will work at the intersection of digital signal processing, conversational AI, and restaurant operations, directly influencing technical architecture, prototyping, and product direction. Your contributions will impact how millions of customers interact with AI-powered voice systems in fast-paced restaurant environments.

Essential Job Functions

Algorithm Development & Optimization :

• Design, implement, and optimize real-time DSP algorithms for speech enhancement, noise reduction, echo cancellation, and beamforming.
• Improve multi-speaker handling with techniques such as VAD, source separation, and speaker diarization.
• Contribute to low-latency, multi-channel audio pipelines that can scale across thousands of drive-thru and phone channels.

AI & Speech Integration :

Engineering & Product Collaboration :

Code & Process Quality :

Requirements

Must-Have

Nice-to-Have

Working Terms