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# Senior Fullstack Engineer

- **Company:** Flinn
- **Location:** Wien, Austria
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, JIRA, Node.Js, Web Applications, ReactJS, Backend, Non-relational Database, Build Process, Front End Software Development
- **Published:** September 22, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=08897e3d2572aeea

## About the Role

+ 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.
 + Solid backend experience (preferably Node.js) and frontend experience (preferably React).
 + Solid understanding of both 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.
Nice-to-have:

 + Experience in a founding engineer or 0 1 building context.
 + Background as an engineering manager who's chosen to move back into hands-on building - a profile that's worked well for us before., * You have a positive, problem-solving mindset and a clear bias for action - you bring your own ideas and solutions proactively.
 * You speak up. We're hybrid, so if you have an opinion, a concern, or a better idea, we need you to say so.
 * You have a passion for sharing knowledge and mentoring less experienced engineers, and you lead by example.
 * You're a good communicator with both technical and non-technical people, and you give and receive direct, open feedback well.
 * You're pragmatic and adaptable, comfortable reacting to new findings in a dynamic, still-maturing environment.
 * You care about the product and the problem it solves - you see technology as a tool, not an end in itself.

## Description

* Make a Meaningful Impact: Your work at Flinn contributes directly to solutions that improve people's health and lives by making high-quality health products accessible for everyone.
 * Experienced, well-funded, highly professional: As well-funded startup veterans, we know how to sustain long-term business health and success, ensuring an environment for continuous personal growth., * 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.

We are not just looking for someone to complete Jira tickets, but rather to be actively involved in decision making (product & tech) and take ownership and initiative.