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Software Engineer
Supersonik Ai
BarcelonaOn-site10mo ago
- Employment
- Full-time
About the role
What You’ll Work On
- Scale a real-time, event-driven backend architecture where milliseconds matter
- Design and implement low-latency APIs using FastAPI and Asyncio
- Solve engineering challenges in performance optimization, observability, and resilience
- End to end contributions from frontend to infrastructure.
- Collaborate on prompt engineering, LLM behaviors, LLM fine-tuning and UX
- Build and maintain infrastructure-as-code with Terraform and AWS
- Contribute to 0→1 product development with a small, fast-moving team
Our Stack
- Backend: Python, FastAPI, Asyncio, Redis, PostgreSQL
- Infra: AWS, Terraform, CI/CD
- Frontend: React
- Tooling: GitHub, Datadog, Linear
Bonus Points
- Experience with LLMs (prompting, training, alignment)
- Experience with TTS, STT and real-time voice
- Experience with browser automations
- Deep knowledge of AWS, Terraform, and distributed systems
- Experience shipping 0→1 products in a startup
What You’ll Get
- Significant equity in a company backed by A16z
- Full ownership, real impact, and fast learning cycles
- A tight-knit team that values clarity, speed, and smart execution
Perks & benefits
- Equity Compensation
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