Synthio is looking for a hands-on Software Engineer who enjoys building end-to-end systems and shipping production-grade products. This role sits at the intersection of backend engineering, AI systems, and infrastructure. You’ll work on LLM-powered and voice-enabled applications, integrate external APIs, and own services from design through deployment and operation.

You’ll join a small, fast-moving team building real-world software for healthcare and pharma, where reliability, performance, and correctness are non-negotiable. We value engineers who take ownership, move quickly, and are comfortable operating across the stack.

What You’ll Do

Build and maintain backend services that power AI- and LLM-driven products
Design and implement APIs, data flows, and service integrations
Productionize LLM-based workflows (prompting, retrieval, orchestration, evaluations)
Deploy and operate services with a focus on low latency, high availability, and robustness
Design and manage infrastructure (containerization, cloud services, CI/CD)
Work on voice-enabled systems (STT/TTS, streaming APIs) as part of end-user experiences
Monitor, debug, and optimize systems for performance, reliability, and cost
Collaborate closely with founders and product stakeholders to turn ambiguous requirements into scalable software
Own features and services end-to-end, from initial design to production support

What We’re Looking For

1–3+ years of experience in software engineering or backend-focused roles
Strong proficiency in Python
Experience designing and building APIs and backend systems
Hands-on experience working with LLM APIs (OpenAI, Anthropic, or similar)
Comfort with cloud infrastructure and DevOps fundamentals (Docker, AWS ECS/EKS/Lambda, observability, basic security)
Interest in AI-powered systems, including voice and conversational interfaces
Solid systems and architecture thinking, with a pragmatic approach to tradeoffs
Ability to work with incomplete specs and make sound engineering decisions independently

Why This Role Matters

At Synthio, we build software that directly supports patients, physicians, and pharma teams. This is production software, not prototypes or demos. The systems you build will be used in real workflows, under real constraints, and at real scale. You’ll have meaningful ownership and a clear line of sight from your code to real-world impact.

Perks

Competitive salary
Remote-friendly
Team offsites in San Francisco