Pear VC
Atrix Ai
At Atrix AI, we believe life sciences teams deserve more than just datathey deserve answers. Medical affairs and commercial teams sit on mountains of messy, unstructured information that could impact patient outcomes, if only they could make sense of it. Atrix is helping the world's most innovative companies in pharma and medtech turn AI into a trusted ally for clinical decision-making. We're on a mission to make AI-native workflows that are fast, intuitive, and impactfulwithout compromising on compliance, privacy, elegance, or trust. We're a small, focused team working fast, listening to customers, and shipping quickly. If you love building beautiful products, translating real-world complexity into intuitive UX, and want your code to power decisions that improve lives, you'll thrive here. The Role Description
You'll be a core builder of Atrix's backend infrastructure, powering AI-native workflows that ingest unstructured data, structure it with AI, and deliver insights that matterinstantly and reliably. You'll work on scalable data pipelines, robust APIs, and real-time inference systems, supporting everything from complex agent workflows to customer-facing dashboards. Whether it's building retrieval pipelines, optimizing async background workers, or designing clean, secure APIs, your work will be foundational to how our platform works and scales. We're 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. You'll tackle rich backend engineering challenges like: System Design & Reliability Scale to handle massive amounts of records with fast response times
LLM Ops Make AI outputs explainable, auditable, and efficient
Multi-Tenant Infra Isolate customer data across parallelized pipelines
AI Performance Tuning Optimize inference cost, caching, and latency
RAG Pipelines & Contextual Workflows Connect structured + unstructured data for real-world usage
You'll work closely with the Engineering Lead and CEO, and collaborate across product, AI, and GTM. As one of our earliest backend engineers, you'll influence everything from our architecture to hiring bar. This is an in-person role based in NYC, with flexibility for remote work on some days as needed. Responsibilities
This role is perfect for someone who thrives on solving deep technical problems, loves optimizing systems for speed and scale, and gets energized by seeing their work used in real-world, high-stakes environments. If you're excited about powering AI workflows behind the scenesand building infrastructure that's as elegant as it is reliablewe'd love to talk. In this role, you will: Design and own major modules of our backend architecture (APIs, workers, orchestration)
Optimize 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 observability, traceability, and modularity of backend systems
Lead customer-focused feature delivery with high attention to security and compliance
Must haves: 5+ years backend engineering experience in fast-paced product teams
2+ years of Python experience, including async programming
Expertise with one or more frameworks: FastAPI, Flask, 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
Nice to haves: Familiarity with Celery, LangChain, LlamaIndex, or other LLM orchestration tools
Exposure to RAG or context injection workflows
Experience with AWS, Terraform, Kafka, or PyTorch
Background in healthcare, data security, or regulated environments
Why Join Atrix As A Backend Engineer?
Mission-Driven Impact Your code will help life sciences teams deliver better treatmentsfaster. Every system you build supports real-world clinical outcomes. Real AI, Real Stakes This isn't research tooling. You'll make AI work for real customersensuring reliability, explainability, and speed in high-stakes environments. Deep Backend Ownership Shape architecture, modular services, and engineering culture from day one. Scale + Complexity You'll design systems that operate on thousands of records, across multi-client, multi-agent environmentswith LLMs at the core. Early Team, High Growth Be part of a tight-knit, mission-oriented team, and grow into our Backend Lead Engineer as we scale. What We Offer
Compensation: Competitive salary + equity package
Health & wellness support Stipend + medical (vision, dental, health) insurance coverage
Unlimited PTO Recharge when you need to
High learning velocity Get exposed to AI, infra, GTM, and real customers daily
At Atrix AI, we believe life sciences teams deserve more than just datathey deserve answers. Medical affairs and commercial teams sit on mountains of messy, unstructured information that could impact patient outcomes, if only they could make sense of it. Atrix is helping the world's most innovative companies in pharma and medtech turn AI into a trusted ally for clinical decision-making. We're on a mission to make AI-native workflows that are fast, intuitive, and impactfulwithout compromising on compliance, privacy, elegance, or trust. We're a small, focused team working fast, listening to customers, and shipping quickly. If you love building beautiful products, translating real-world complexity into intuitive UX, and want your code to power decisions that improve lives, you'll thrive here. The Role Description
You'll be a core builder of Atrix's backend infrastructure, powering AI-native workflows that ingest unstructured data, structure it with AI, and deliver insights that matterinstantly and reliably. You'll work on scalable data pipelines, robust APIs, and real-time inference systems, supporting everything from complex agent workflows to customer-facing dashboards. Whether it's building retrieval pipelines, optimizing async background workers, or designing clean, secure APIs, your work will be foundational to how our platform works and scales. We're 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. You'll tackle rich backend engineering challenges like: System Design & Reliability Scale to handle massive amounts of records with fast response times
LLM Ops Make AI outputs explainable, auditable, and efficient
Multi-Tenant Infra Isolate customer data across parallelized pipelines
AI Performance Tuning Optimize inference cost, caching, and latency
RAG Pipelines & Contextual Workflows Connect structured + unstructured data for real-world usage
You'll work closely with the Engineering Lead and CEO, and collaborate across product, AI, and GTM. As one of our earliest backend engineers, you'll influence everything from our architecture to hiring bar. This is an in-person role based in NYC, with flexibility for remote work on some days as needed. Responsibilities
This role is perfect for someone who thrives on solving deep technical problems, loves optimizing systems for speed and scale, and gets energized by seeing their work used in real-world, high-stakes environments. If you're excited about powering AI workflows behind the scenesand building infrastructure that's as elegant as it is reliablewe'd love to talk. In this role, you will: Design and own major modules of our backend architecture (APIs, workers, orchestration)
Optimize 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 observability, traceability, and modularity of backend systems
Lead customer-focused feature delivery with high attention to security and compliance
Must haves: 5+ years backend engineering experience in fast-paced product teams
2+ years of Python experience, including async programming
Expertise with one or more frameworks: FastAPI, Flask, 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
Nice to haves: Familiarity with Celery, LangChain, LlamaIndex, or other LLM orchestration tools
Exposure to RAG or context injection workflows
Experience with AWS, Terraform, Kafka, or PyTorch
Background in healthcare, data security, or regulated environments
Why Join Atrix As A Backend Engineer?
Mission-Driven Impact Your code will help life sciences teams deliver better treatmentsfaster. Every system you build supports real-world clinical outcomes. Real AI, Real Stakes This isn't research tooling. You'll make AI work for real customersensuring reliability, explainability, and speed in high-stakes environments. Deep Backend Ownership Shape architecture, modular services, and engineering culture from day one. Scale + Complexity You'll design systems that operate on thousands of records, across multi-client, multi-agent environmentswith LLMs at the core. Early Team, High Growth Be part of a tight-knit, mission-oriented team, and grow into our Backend Lead Engineer as we scale. What We Offer
Compensation: Competitive salary + equity package
Health & wellness support Stipend + medical (vision, dental, health) insurance coverage
Unlimited PTO Recharge when you need to
High learning velocity Get exposed to AI, infra, GTM, and real customers daily