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# Senior Fullstack Engineer

- **Company:** Clera
- **Location:** Wien, Austria (Remote available)
- **Experience:** Expert
- **Salary:** €80,000.0 - €120,000.0
- **Contract:** Permanent contract
- **Skills:** Artificial Intelligence, Microsoft Azure, Node.Js, Software Product Management, Release Management, Systems Integration, TypeScript, ReactJS, Large Language Models, AI Platforms, NestJS
- **Published:** May 24, 2026
- **Apply:** https://at.indeed.com/viewjob?jk=8fb8256442d3c8d4

## About the Role

Must-haves (dealbreakers):

 * 5+ years of Fullstack Engineering experience delivering end-to-end web features.
 * Strong hands-on experience with Node.js, TypeScript, NestJS, and React.
 * Native-level German proficiency - essential for working with a German-language AI product and German-speaking customers.

Required:

 * Experience with product discovery: forming hypotheses and validating them through rapid experiments.
 * Comfortable identifying, collecting, and leveraging metrics to inform product decisions.
 * Proven ability to collaborate with customers, partners, and sales teams to understand pain points.
 * Track record of delivering customer-facing applications end-to-end, including architecture decisions and release.

Nice to have:

 * Experience integrating LLMs (e.g., OpenAI) into production software applications.
 * Experience deploying AI-enabled services on Microsoft Azure in a European context.
 * Familiarity with GDPR and EU AI Act considerations for AI services.
 * Background in high-growth startup environments.

## Description

We are a seed/early-stage B2B SaaS company building an AI-powered phone assistant for the German-speaking market. Serving thousands of SMEs across the DACH region, our platform automates customer communication - handling inbound calls, scheduling appointments, transcribing conversations, and integrating with CRMs and calendar tools. We are a remote-first, high-growth team based in Vienna, Austria, and we are looking for a Senior Fullstack Engineer who takes genuine end-to-end ownership of the features they ship., * Own features from initial idea and prototype through architecture, implementation, and production release.

 * Engage continuously with customers, partners, and the Sales team to surface real pain points and define meaningful value.
 * Run product discovery: form hypotheses and validate them quickly with lightweight experiments before committing to large builds.
 * Instrument your area of the product and gather the metrics needed to support data-driven decisions.
 * Build pragmatic, scalable software that balances immediate customer value with long-term maintainability.
 * Communicate asynchronously and prioritize shipping over excessive meetings.
 * Act with radical ownership - push initiatives forward without waiting for permission.


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