Senior AI Software Engineer (f/m/d)

About this role

The Finanzen.net Group is a fintech company that supports retail and professional investors in making investment decisions through three core brands:

• **finanzen.net** - one of the leading financial information portals in the DACH region
• **Finanzen invest** - a broker offering low-cost securities trading
• **TraderFox** - a provider of financial information and trading tools for semi-professional investors and those who aspire to become one

Since early 2025, the Group has been part of Inflexion, a European private equity firm that is strategically bringing together the previously independent business units. This realignment, combined with the Group’s strong innovative capabilities, creates new growth opportunities to further strengthen its position as a leading investment platform.

To execute this growth strategy, we are looking for motivated talents who want to actively shape this transformation.

*Flexibility meets team spirit. Several times a year, we meet in person in Karlsruhe for workshops, team events, and more.*

We’re building a product that helps investors make better decisions by combining real-time market data, news and GenAI into a product used daily by investors.

We’re looking for a Senior AI Software Engineer with strong Python and AWS experience who enjoys taking ownership and shipping products end-to-end. You’ll work primarily with Python, FastAPI, GenAI and AWS, building scalable backend services, AI-powered features and data pipelines. You'll make real architectural decisions, like knowing when an LLM beats a well-tuned ML model or a simple heuristic, and own features from idea through production. We move fast, keep things pragmatic and give engineers a lot of ownership.

Responsibilities

• Build and ship AI-powered, full-stack products from idea to production.
• Develop scalable backend services with Python & FastAPI.
• Design, deploy and operate production systems on AWS.
• Drive architecture and technical decisions a...