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# Senior+ Backend Engineer

- **Company:** HAPIKO INC.
- **Location:** New York, NY, United States (Remote available)
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** DevOps, Distributed Systems, Monitoring of Systems, Python (Programming Language), PostgreSQL, Redis, Azure Machine Learning, Large Language Models, Caching, Audio Streaming, Backend, Fastapi, Machine Learning Operations, Api Design, Restful APIs, Data Pipelines, Elixir, User Administration
- **Published:** October 20, 2026
- **Apply:** https://www.juju.com/job/23_ECDD26C676518AF75AA3DC645A163A4E

## About the Role

5+ years building and shipping backend systems in Python Deep experience with FastAPI and asyncio patterns Strong PostgreSQL skills, including schema design Hands-on experience with Redis (caching, queues, pub/sub) Track record of designing reliable distributed systems A DevOps mindset, comfortable deploying, monitoring, and scaling Experience with GenAI/LLM pipelines deployed in production Clear communication skills; can translate technical tradeoffs for the team

## Description

bringing imagination to life for kids nationwide! The technical challenge is real. We're running real-time streaming, processing thousands of concurrent connections from IoT devices, and orchestrating ML pipelines that return magical responses in seconds or less. Our hybrid Python-Elixir architecture handles everything from device authentication to job queuing to image delivery, all with the reliability parents expect and the speed kids demand. We need a Backend Engineer to own and evolve this infrastructure. You'll architect and maintain the systems that connect thousands of devices, manage real-time audio pipelines, and power the experiences that make everything just work. This is a foundational role where your decisions will shape how we grow from thousands to millions of users. Real-Time Infrastructure

IoT w/ audio streaming that handles tens of thousands (on our way to millions) of concurrent device connections Distributed job systems with Redis queues and pub/sub Optimized pipelines for GenAI at high RPM with sub-second latency Monitoring and observability to keep our infrastructure healthy

APIs & Services

FastAPI services for device auth, user management, and webhook integrations Secure RESTful APIs that are a joy to work with Reliable integrations with external ML services Data pipelines that feed our evaluation systems