Apply on Employer Site

D24 Search · 5 hours ago

Python Developer

San Francisco, CA

Full-time

Onsite

Mid, Senior Level

$0/yr - $220K/yr

5+ years exp

D24 Search is a Series A funded AI Start-Up leading the way in voice AI technology. They are seeking a Python Developer to build and maintain Python-based state systems for their voice AI, integrating multiple LLM providers and ensuring high performance and reliability.

Staffing & Recruiting

Hiring Manager

Toby Hill

Responsibilities

Build and maintain Python-based state systems that drive what the voice AI says and does across complex, real-time conversations

Integrate and orchestrate multiple LLM providers, including prompt design, tool/function calling, routing, and fallbacks

Write clean, maintainable, high-performance Python code, leveraging asyncio, OOP, and best practices

Write automated tests and validation suites to ensure correctness, resilience, and safe iteration of agent logic and state transitions

Monitor production systems, debug agent behavior, and continuously improve reliability and conversation quality

Implement comprehensive metrics, logging, and alerting to validate correctness, detect failures early, and maintain extremely high availability

Design database schemas, optimize queries, and operate both SQL and NoSQL databases in production

Build and operate authentication and authorization mechanisms with strong security guarantees

Design and build microservices-based architectures

Qualification

Deep Python experienceVoice AI experienceCloud infrastructure (AWS)Distributed systems understandingMicroservices architecturePerformance optimizationOOP best practicesSQLNoSQL databasesAutomated testingWorkflow builder products

Required

5+ years of experience as a software engineer with Deep Python experience, ideally with lower-level workings for performance optimization at scale (asyncio, OOP, best practices)

Startup experience (Seed - Series C) strongly preferred over enterprise (important for matching work ethic and pace expectations)

Previous work on Voice AI and LLM features or products

Working on problems of improving performance at scale

Degree from a top university for CS or similar subjects

Cloud infrastructure experience (we use AWS and Kubernetes)

Understanding of how distributed systems work together (microservices, databases, auth mechanisms)

Low ego with high belief in challenging oneself

Worked on workflow builder products before