Founding Backend Engineer (AI Focus) - Atrix
New York City • FullTime
Posted 1y ago
Job Location
New York City
Tech Stack
Remote Work Policy
On-site
Employment Type
FullTime
Categories
LLM Engineer
About the job
Atrix is building purpose-built AI for life sciences, designed for the accuracy and rigor biopharma requires. We are live with top-10 pharmaceutical companies and scaling fast, focused on helping the right treatments reach the right patients, sooner. The core of our platform involves AI-native workflows that ingest unstructured data, structure it with AI, and deliver insights instantly and reliably. This role will be a core builder of our backend infrastructure, working on scalable data pipelines, robust APIs, and real-time inference systems. You will be instrumental in building a modular, agentic platform that connects to customer-approved data sources, transforms unstructured data using LLM-based agents, and delivers decision-ready intelligence to regulated teams.
Responsibilities
- Design and own major modules of our backend architecture, including APIs, workers, and orchestration.
- Optimize the performance and reliability of data processing and AI inference systems.
- Build and maintain LLM-powered backend features and multi-step workflows.
- Collaborate with product and AI teams to launch performant, production-grade AI features.
- Improve the observability, traceability, and modularity of backend systems.
- Lead customer-focused feature delivery with a high attention to security and compliance.
Requirements
- 5+ years of backend engineering experience in fast-paced product teams.
- 2+ years of Python experience, including async programming.
- Expertise with one or more frameworks: FastAPI, Flask, or Django.
- Strong experience with SQL (PostgreSQL) and ORMs (SQLAlchemy or equivalent).
- Experience building APIs, background workers, and distributed systems.
- Understanding of how LLMs, embeddings, or RAG workflows function.
- Startup experience or demonstrated ownership in complex backend projects.
Benefits
- Competitive salary
- Equity package
- Health and wellness support (stipend + medical, vision, dental insurance coverage)
- Unlimited PTO