Senior AI Fullstack Engineer – HealthTech & Impact

Flinn; Wien; Hybrid; EUR 110,000 - 140,000; Full time

Job summary

Flinn is seeking a product-minded Fullstack Engineer with a strong AI focus to build AI-native products that improve safety of medical devices. You will own end-to-end features across frontend (React) and backend (Node.js) and work closely with product to translate feedback into roadmaps.

You’ll join a fast-growing European startup with flexible hours, remote options, and equity. The role demands hands-on experience with AI tooling, scalable architectures, and a proactive, cross-functional

Qualifications

• Proven track record designing, building, and maintaining complex, production web applications as a senior engineer.
• Hands-on experience building with AI tooling, or building AI-powered product features.
• Strong backend experience (Node.js) and frontend experience (React).
• Solid understanding of relational and non-relational databases.
• Experience working closely with product in a cross-functional, product-led environment.
• Comfortable operating with ambiguity and building infrastructure and processes as you go.

Responsibilities

• Own a piece of our product end-to-end - either building a new module 0→1 with real autonomy over technical design, or strengthening an existing team already shipping in production.
• Work hands-on across the full stack: frontend (React), backend (Node.js), and the relational/non-relational databases underneath.
• Partner directly with product - understand why a feature matters to a customer, not just what to build; help turn customer feedback into roadmap decisions.
• Use AI tooling as part of your day-to-day build process, and in some cases help us ship AI-powered features into the product itself.
• Help shape our architecture, engineering standards, and hiring as we grow the team.

Skills

AI tooling

Node.js

React

Databases

Cross-functional

Product-led

Ambiguity handling

0→1

Engineering leadership

Tools

AI tooling

Job description

Flinn is seeking a product-minded Fullstack Engineer with a strong AI focus to build AI-native products that improve safety of medical devices. You will own end-to-end features across frontend (React) and backend (Node.js) and work closely with product to translate feedback into roadmaps.

You’ll join a fast-growing European startup with flexible hours, remote options, and equity. The role demands hands-on experience with AI tooling, scalable architectures, and a proactive, cross-functional