Staff Engineer
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Before you apply
SalaryNo pay range posted
LocationSan Francisco
Work modeon-site
Typefull-time
SeniorityLead
DepartmentEngineering
Company size11–50 people
PostedJan 28, 2026 · 9mo ago
Verified live11h ago
May no longer be actively hiring
Posted by the company on Jan 28, 2026100% of this company's open roles have been listed for 90+ daysNo pay range listed, though California requires one
At a glanceSummarised by Seekless from the posting.
Experience building and operating systems at scale
Strong opinions about architecture, loosely held
Comfortable being the most senior technical person in the room
Able to take vague problems and ship working systems
Code that survives production
Skills
TypeScript
Python
Swift
C#
Bun
Node.js
Django
FastAPI
PyTorch
Fly.io
Terraform
AWS
RDS
Redis
gRPC
WebSocket
REST
Electron
Celery
PostgreSQL
About Us
Aqua Voice is building the voice input layer for the age of AI. We train our own models and build deep OS integrations because doing voice well requires controlling the entire stack.
The way people work is changing. IC work is over; you manage AI agents now. This type of work is wonderfully suited for voice.
We aren’t building conversational agents. We believe the most natural way to interact with your computer is voice in text out (VITO). We believe that voice belongs at a level above the application, and that a small company can win by pushing the envelope.
We are applying relentless energy to this opportunity and the results so far have been good. We hope you will join us.
The Role
You will own technical systems across the stack. We’re a small team, post-product-market-fit, and growing. We have real users and real problems.
We prefer modern tools—Bun over Node, Fly over AWS when it makes sense, PyTorch over legacy ML frameworks.
The Work
GPU inference: We run our own ASR models.
Real-time transcription: WebSocket state machines, multi-provider failover, sub-100ms latency targets. We track 30+ metrics per session.
Native apps: Swift on macOS, C# on Windows, Electron IPC. System-level programming.
Backend: Django for billing and analytics (oops). Celery for background jobs. PostgreSQL.
There are no separate infrastructure and product teams. You will work on all of it.
Stack
•
Languages: TypeScript, Python, Swift, C#
•
Runtime: Bun, Node.js, Django, FastAPI
•
ML: PyTorch
•
Infra: Fly.io, Terraform, AWS (RDS), Redis
•
Protocols: gRPC, WebSocket, REST
What We’re Looking For
•
Experience building and operating systems at scale
•
Strong opinions about architecture, loosely held
•
Comfortable being the most senior technical person in the room
•
Able to take vague problems and ship working systems
•
Code that survives production