Staff / Principal Software Engineer
Inworld AI is a research lab and inference provider for realtime AI at consumer scale. It provides text-to-speech, speech-to-text, speech-to-speech, and LLM routing products for developers and businesses building consumer-facing applications.
Maintainer signals as of 9/25/2026
Funding history
Projects
About Inworld AI
Inworld AI develops and operates realtime AI infrastructure, including first-party text-to-speech and speech-to-text models, a customizable speech-to-speech Realtime API, and an LLM Router that routes requests across leading model providers. Its platform supports voice agents, social and companion applications, learning and education, health and wellness, agentic workforce applications, and games and media. The company serves developers, businesses, and teams building consumer-facing applications.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
Join Inworld's platform team building systems behind products including Inworld Router, Realtime API, and custom TTS/STT services. The role focuses on multi-provider routing, failover, cost and latency optimization, real-time observability, control and optimization services, platformization, development tooling, and system-wide billing. This is an IC-focused role requiring technical autonomy and direct contribution.
Requirements
- Excellent programming skills in a statically typed backend language, preferably Go, Python, C++, or Rust
- Experience developing and deploying cloud-based services at hundreds of queries per second or more
- Experience with relational databases such as PostgreSQL or MySQL
- Hands-on experience with Redis or Memcached, pub/sub or queues, Flink or Beam data pipelines, and cloud storage
- Excellent verbal and written communication skills
- Bonus: experience building API gateways, routing or proxy layers, or multi-provider orchestration systems
- Bonus: experience with ClickHouse, Timescale, or InfluxDB
- Bonus: experience with OpenTelemetry
- Bonus: experience with C++
Responsibilities
- Own core systems for multi-provider failover, cost/latency-based routing, live A/B experimentation, and real-time observability at massive scale
- Design systems where every millisecond and every routing decision matters
- Collaborate with PMs, engineers, and leads to determine product priorities
- Operate with technical autonomy, including introducing technical dependencies or standards when appropriate
- Collaborate, execute, and deliver features while balancing speed and quality
- Advocate for and implement system improvements
- Work on control and optimization services
- Contribute to infrastructural projects including platformization, development tooling, and system-wide billing
Benefits
- Equity
- Benefits