Senior Software Engineer, Backend
Coinbase
GoPythonTypeScriptWeb3
Senior Python Developer, Voice AI
Checkmate
full-time
Posted on:
Location Type: Remote
Location: Remote • 🇺🇸 United States
Visit company websiteSalary
💰 $150,000 - $230,000 per year
Job Level
Senior
Tech Stack
PythonSQL
About the role
- Architect and build the conversation orchestration service: ASR → LLM inference → TTS streaming in real time
- Write robust, asynchronous Python code designed to handle high concurrency without deadlocks, race conditions, or memory leaks
- Design and maintain clean, well-structured APIs for future scalability and ease of debugging
- Manage interaction data using SQL Alchemy (or equivalent) with efficient schema design and safe migrations
- Implement observability: structured logging, metrics, and tracing across the system for instant issue diagnosis
- Partner with ML and Product teams to rapidly iterate on conversation flow and user experience
- Enforce a strong testing culture: automated unit tests, E2E flows, and load testing
- Build resilient systems capable of handling real-world edge cases like noisy audio, unreliable APIs, and flaky networks
- Continuously profile, optimize, and reduce latency and response times**
Requirements
- Deep Python expertise: 5+ years in Python, production systems experience required, context managers, generators, event loops, GIL, and effective use of asyncio
- Database fundamentals: data modeling, efficient queries, ORM best practices
- Networking & I/O: streaming, backpressure, and resilient design for unreliable networks
- Testing discipline: delivering production-ready, validated code
- Observability mindset: metrics, logs, and traces are integral to your coding process
- Production readiness: You’ve built and supported systems running live at scale.
Benefits
- Health Care Plan (Medical, Dental & Vision)
- Retirement Plan (401k)
- Life Insurance (Basic, Voluntary & AD&D)
- Flexible Paid Time Off
- Family Leave (Maternity, Paternity)
- Short Term & Long Term Disability
- Training & Development
- Work From Home
- Stock Option Plan
Applicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard skills
Pythonasynchronous programmingSQL AlchemyAPI designautomated testingE2E testingload testingdata modelingORM best practicesprofiling and optimization
Soft skills
collaborationproblem-solvingattention to detailtesting disciplineobservability mindset
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