Founding Fullstack Software Engineer (FE Focus)

The Role Description

You’ll be a core builder of the Atrix AI-native platform, designing and shipping features that turn complex healthcare and AI workflows into intuitive, elegant interfaces, trusted by scientific, medical, and commercial teams across top pharma companies.

From crafting thoughtful front-end UX to building robust backend systems, you’ll help bridge our AI core with real-world customer pain points, working on problems that genuinely move the needle in patient care.

We’re building a modular, agentic platform that connects to customer-approved data sources, transforms messy, unstructured data using advanced AI, and delivers structured, actionable insights that drive decisions in regulated environments.

You’ll see your work used daily by medical, clinical, and commercial teams making high-stakes decisions.

You’ll tackle rich engineering challenges across:

Performance — We’re processing large data sets at once

Security & Privacy — Customers trust us with sensitive data

Explainability — AI outputs must be verifiable and traceable

Composable UI/UX — Interfaces need to adapt to varied use cases, from chat to dashboards to spreadsheets

You’ll work closely with our Engineering Team and CEO, and collaborate as a peer to product, design, and GTM leadership. As one of our earliest Full Stack Engineers, you’ll help define technical architecture, influence product strategy, and set the tone for future engineering hires.

💡 This is an hybrid role based in NYC (ability to be in office is required), with flexibility for remote work on some days as needed.

Responsibilities

This role is perfect for someone who is customer-obsessed, technically fluent, and thrives in fast-moving startup environments. If you love the challenge of translating AI workflows into intuitive product experiences in a high-stakes industry, we want to talk to you.

Own and evolve our web stack (React/Next.js + Python) to support fast, reliable AI-native workflows

Collaborate directly with product and design to shape user-facing features from spec to ship

Translate complex backend data structures into intuitive, delightful interfaces

Debug and improve frontend and backend systems to increase performance and reduce latency

Attend key customer and sales meetings to understand real-world workflows and incorporate feedback into product design

Drive architectural improvements to support scale, modularity, and developer velocity

Take full ownership of core product modules across the stack.

Must haves

5+ years experience as a fullstack or frontend-focused engineer

Previous B2B and startup experience required

Expertise in React/Next.js and frontend systems architecture

Comfortable working across the stack in Python when needed

Passionate about user experience and shipping polished, performant UIs

Proven ability to own projects end-to-end, from planning to deployment

Experience with distributed systems, APIs, and performance optimization

Desire to get involved in customer meetings, hear their feedback, and help translate that to a delightful experience

Nice to haves

Background in life sciences, healthcare, or real-world data

Data science experience

Work experience at healthcare AI startups or technical consulting firms

Experience deploying AI in regulated or enterprise settings

Why Join Atrix as a Fullstack Software Engineer?

🚀 Mission-Driven Impact
Your work will help life sciences teams deliver the right treatment to the right patient—faster. Real-world clinical outcomes start with better tools, and you’ll be building them.

👨‍⚕️ Customer-Centric & High-Stakes
You won’t be building in a vacuum. You'll work directly with top-10 pharma companies to understand how AI can transform medical workflows—this is high-impact, high-visibility work.

🧱 End-to-End Ownership
Own major parts of the stack, shape technical architecture, and influence product direction from day one.

🌱 Early Stage, High Growth
We're small and moving fast. You’ll help shape both the technology and the culture as we scale.

🧠 Tech Meets Trust
Design AI-native workflows that scientific and medical teams trust and depend on daily.

📈 Clear Growth Path
Opportunity to grow into a Lead Frontend or Fullstack Tech Lead role as we expand the engineering team.

What we offer

💪 Health & wellness support – Stipend + medical (vision, dental, health) insurance coverage
🌴 Unlimited PTO – Recharge when you need to