Company Name: Checkmate (itsacheckmate.com)

Job Details: Hiring,Remotely,in,United,States,Remote,150K-230K,Annually,Senior,level

Job Url: https://builtin.com/job/senior-python-developer-voice-ai/7318946

Job Description: DescriptionWe are developing a real-time voice AI platform that combines speech recognition, LLM-driven reasoning, and natural-sounding text-to-speech capabilities. This is production-grade software designed to run continuously, scale under heavy load, and deliver human-like conversations with minimal latency. If you are a seasoned Python engineer who thrives on building resilient systems and solving tough concurrency challenges, this is the role for you. What You’ll Do/Essential Job Functions ● 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 times100% RemoteSalary $150,000 - $230,000RequirementsDeep 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 practicesNetworking & 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