Senior AI Developer / Fullstack Engineer

Project overview

Senior AI Developer / Fullstack Engineer

Responsibilities

MANDATORY REQUIREMENTS FOR PROFILE ADJUSTMENT

As the must-have requirements are mandatory, we kindly ask you to make the following adjustments to the consultant profile / CV for successful review and submission to the department:

Project-related evidence:

Please list the required must-have and should-have criteria directly as concrete activities in your respective project stations (e.g., "Implementation of X with Y" instead of just skill lists at the end of the profile).

Wording & Experience:

Feel free to use the exact wording from the job posting. Please ensure that the required years of experience and references are clearly evident from the project periods.

Please understand that applications without these adjustments cannot be considered in the process.

Requirements Profile

Requirements – Must Have (Mandatory)

Requirements – Should Have

I look forward to your feedback.

• Conception & Development: Modern web applications based on TypeScript, Node.js, Angular, and PostgreSQL.
• Generative AI & LLM Integration: Integration of Large Language Models (LLMs) and development of AI-powered functions (intelligent search, summaries, assistance, and analysis functions).
• Agentic Systems: Conception and implementation of AI agents, tool integrations, and Model Context Protocol (MCP) connections.
• Backend & APIs: Development, integration, and optimization of backend services, APIs, and data models.
• Architecture & Quality: Technical concept work, making architectural decisions, and quality assurance (automated tests, performance optimization, code reviews).
• DevOps & Operations: Monitoring and continuous development in a DevOps model using GitLab and Kubernetes.
• Collaboration & Consulting: Technical collaboration with POs, BAs, UX experts, and testers, as well as active consulting on new AI technologies.
• Backend Development: Minimum 3 years of experience in backend development with TypeScript & Node.js within the last 5 years.
• Frontend Development: Minimum 3 years of experience in frontend development with Angular.
• LLM Integration: Demonstrable experience in integrating a Large Language Model (LLM) into a web application (min. 1 reference project).
• RAG Systems: Demonstrable experience with Retrieval Augmented Generation (RAG) (min. 1 reference project).
• Databases: Minimum 3 years of experience in developing applications with PostgreSQL.
• Language Level: German at C2 level (fluent / near-native).
• MCP & Tool Calling: Experience with Model Context Protocol Servers (MCP Servers), Tool Calling, or comparable integration architectures (1 reference).
• Agentic AI: Experience in implementing AI agents, multi-agent systems, or agentic workflows (1 reference).
• DevOps & CI/CD: Experience with CI/CD toolchains and Kubernetes-based deployments (GitLab, K8s, Helm) (> 3 years of experience).
• Real-time Communication: Experience with WebSocket communication (<= 3 years of experience).
• UX/UI & Accessibility: Conception/implementation of user-friendly interfaces according to WCAG standard (1 reference).
• Industry Knowledge: Experience with information systems for railway transport companies (EVU) (1 reference).

Project details

Frankfurt am Main area (approx. 64 days on-site) / Remote (Total: 703 PT)

16.11.2026 – 31.12.2029

Utilization: 100% (Full-Time Equivalent / 1 FTE)

Language Skills: German (C2)

€600-€700 for partners

Salary: €90,000

IMPORTANT NOTE ON EMPLOYMENT (HR Compliance)

For this project, only consultants in permanent employment can be considered.

Due to internal regulations regarding the use of external specialists (HR Compliance), we kindly ask you to only offer resources who are directly employed by you or your subcontractors (if applicable).

• Not permitted: Independent external specialists (freelancers / one-person limited liability companies, UG, GbR etc.).
• Start: 2026-11
• Duration: 32 Monate
• Remote: hybrid
• Location: Frankfurt, Deutschland, DE
• Languages: German