Senior Full-Stack AI Engineer for Enterprise SaaS Products

MULTIPLAI GmbH

Contact person: niklas koch
Germany
100% remoteFreelanceasap100% workload

Description

We are looking for an experienced Senior Full-Stack AI Engineer to help build and operate a portfolio of enterprise SaaS products and bring agentic, LLM-driven features into production. The role requires end-to-end full-stack expertise combined with hands-on experience embedding AI into real-world web applications.

YOUR RESPONSIBILITIES

- Build and operate modern web applications across the product suite, moving fluidly between client, server and infrastructure
- Develop AI-native and agentic capabilities using LLMs, retrieval, tool use and structured workflows to deliver tangible user value
- Design, run and improve cloud-native services with reliability, security and developer experience front of mind
- Grow the shared tooling (agents, skills, pipelines, harnesses) the wider engineering team relies on
- Partner closely with product, UX, architecture and fellow engineers, raising both the engineering and AI-engineering bar
- Approach feature delivery with an entrepreneurial, outcome-driven mindset

YOUR PROFILE

- Multiple years of senior full-stack experience on modern web applications, with genuine depth in at least one frontend (React or Angular) and one backend stack (Java/Spring Boot or Python)
- Practical familiarity with React/Angular, Java Spring Boot, Python, C#, Kafka and Terraform, plus surrounding cloud and DevOps tooling (Kubernetes, Helm, ArgoCD)
- Hands-on exposure to LLM tooling such as Azure OpenAI, the Anthropic SDK or MCP is a strong advantage
- Demonstrated effective use of AI in software engineering; experience with Claude Code or similar (building agents, skills and workflows) is preferred, AI pipelines, harnesses and context engineering a strong plus
- Completed degree in computer science, software engineering or a comparable technical field
- Strong problem-solving instincts, initiative and a bias toward innovation; understanding of product-management processes is a plus
- Fluent English; German is a plus

Please note: we are looking to connect directly with candidates and are hesitant to work with agencies.

Application form