Software Engineer AI/RAG (m/w/x)

AI that makes complex B2B sales simple. With FoxBase’s AI Sales Advisor platform, companies can set up their own AI Product Expert, built for the real world of enterprise and “Mittelstand” companies. We help companies turn complex product portfolios and consultation-heavy sales into fully digital, AI-powered experiences — without compromising on quality, compliance, or control. Our platform combines retrieval-augmented generation (RAG) with proven selection, configuration, and calculation technology to deliver precise, explainable, and compliant answers — across websites, chatbots, and digital channels. Unlike most AI tools built for big tech budgets, FoxBase empowers every company to deploy high-impact, trustworthy AI that meets GDPR and ISO 27001 standards from day one. We make cutting-edge AI accessible, secure, and enterprise-ready — strengthening the competitiveness of Germany and Europe in the new AI era. Who we are Founded in Düsseldorf, we’ve grown into a fast-moving team of engineers, product minds, and builders driven by curiosity and precision. We value speed, ownership, and quality, but also team spirit, flexibility, and foresight — our five FoxBase core values that shape how we build, ship, and grow. Our customers include some of Europe’s most innovative industrial and technology leaders. Together, we’re redefining what “AI-driven sales” means in highly regulated environments — combining enterprise-grade security with modern AI orchestration. Who are we looking forWe’re looking for a Software Engineer AI/RAG, who’s passionate about building production-grade AI systems. Someone who thrives on solving complex technical problems, thinks in systems, and ships solutions that are both elegant and efficient. This isn’t just about writing code. It’s about designing the backbone of AI systems that European enterprises can trust. What you’ll do Own and evolve our Retrieval-Augmented Generation (RAG) stack – from data ingestion and indexing to LLM integration and feedback loops.Build and optimize pipelines that combine vector databases, embeddings, and re-ranking models for reliable, explainable outputs.Design monitoring and quality assurance frameworks to ensure consistent, measurable AI performance.Collaborate closely with product and development teams to translate business complexity into scalable, maintainable architectures.Manage AWS infrastructure using Terraform and ensure cost-efficient, secure, and highly available deployments.Support our continuous improvement process by experimenting with new models, frameworks, and architectural patterns.Mentor junior engineers and contribute to a culture of learning, responsibility, and craftsmanship What you’ll bring 5+ years of experience in software engineering — ideally in Python-based SaaS or AI systems.Deep knowledge of LLM and RAG concepts (retrieval pipelines, embeddings, prompt orchestration, evaluation).Solid understanding of PostgreSQL and data modeling; experience with Qdrant is a plus.Hands-on experience with AWS (RDS, S3, Lambda) and Infrastructure as Code (Terraform).Strong debugging and observability mindset, you care about uptime, latency, and real-world performance.Familiarity secure architectures and GDPR-compliant environments.Curiosity and initiative, you love learning, sharing, and applying new concepts to improve our platform.Fluent in English (German is a plus, but not required). Nice to have Experience building enterprise AI applications (RAG, knowledge bases, LLM integrations).Background in cloud cost optimization, observability (Prometheus, Grafana), or performance engineering.Contributions to open-source AI tools or frameworks.Interest in explainable AI, evaluation pipelines, or model observability tooling. Our tech stack Backend Framework: FastAPI for high-performance APIs and servicesData Modelling & Validation: Pydantic and Pydantic-AI for structured LLM interactions and schema enforcementCloud & Infrastructure: AWS Lambda (serverless microservices) integrated with API Gateway, Terraform for infrastructure provisioning and deployment automationData & Workflow Orchestration: Apache Airflow for managing and scheduling data pipelinesDatabases: Qdrant (vector database) for semantic search and RAG systems, PostgreSQL for structured relational dataLarge Language Models: Integration with multiple LLM providers (OpenAI, Bedrock, etc.) for retrieval-augmented and agentic applications - model-agnostic and vendor-flexibleVisualisation & Monitoring: Plotly Dash for interactive dashboards and data visualizations, Grafana for system telemetry, metrics, and performance monitoring Why you’ll love working here Real impact: Your work powers AI systems used by leading European enterprises in chemicals, construction, and machinery.End-to-end ownership: you’ll design, build, and ship your own features, from concept to production.AI that matters: We don’t build hype demos; we build trusted, explainable AI that improves real business decisions.Freedom & flexibility: Work remotely or from our Düsseldorf HQ, we trust you to manage your time.Learning culture: Dedicated budget for conferences, courses, and coaching.Strong team spirit: We meet on a weekly or monthly basis in our Düsseldorf HQ for creative exchange and to stay connected. We take work seriously, but not ourselves — think quiz nights, good music, GeoGuessr, and darts.Compliance & security mindset: Build with peace of mind — in a GDPR and ISO 27001-certified environment. How we work At FoxBase, engineers are problem-solvers, not just coders. We build with purpose — connecting data, AI, and people to deliver measurable results. We move fast, stay curious, and design with compliance and performance in mind. We keep things pragmatic — shipping high-quality, cost-efficient, and scalable solutions while continuously improving the product with measurable increments. Our journey so far Built one of the first enterprise-ready RAG frameworks tailored for regulated B2B environmentsDelivered AI Product Experts for industry leaders in telecomunications, chemicals, and constructionIntegrated AI quality assurance and feedback loops that keep models explainable and auditableEstablished a fully GDPR-compliant infrastructure, hosted in the EU and certified to ISO 27001 standardsAnd built a team culture that loves solving hard problems — with good music, quiz nights, and the occasional game of darts. The next chapter We’re in a defining moment for AI in B2B sales. Now we’re looking for builders, engineers, and creators who want to shape how businesses sell and support their customers with intelligent, transparent, and controllable AI. If you’re ready to build the most reliable AI Sales Platform in Europe, come join us. Let’s make complex sales simple together, apply here: https://foxbase-gmbh.jobs.personio.de/job/2409443?_pc=315585&display=en&language=en