Freelance AI Full Stack Engineer – Application Backfill (f/m/d) | Freelance | Start: asap | Duration: 9 months + | Industry: Chemical

About the Project

Our client, a leading company in the chemical industry, is seeking an experienced AI Full Stack Engineer to drive innovative development initiatives and support their digital transformation journey. This project focuses on developing new initiative activities while maintaining critical application infrastructure in a complex international environment.

The role combines strategic development work (70%) with operational support (30%), requiring expertise in AI integration, full-stack development, and application landscape management across Microsoft and Google environments.

Your Responsibilities

Take ownership of developing new initiative activities (70%) and NCE (North-Central-Europe) applications (Design, Build, Run)
Support application landscape transformation programs including MS Office Decomm, ADAPT, and ALign
Contribute to prompt engineering and practical AI enablement in internal applications
Support the internal AI community by sharing best practices or supporting vibe coding efforts
Integrate AI services into applications, particularly with Google Gemini / Gemini API
Handle incident management (ticketing) (30%) and troubleshooting in mixed Google/Microsoft environments
Work with ServiceNow for IT Service Management including Demands, Incidents, and Application Portfolio Management

Your Profile

Englisch must-have
Minimum 5 years of relevant experience in application development or support with senior-level expertise
Strong understanding of frontend, backend, and database interactions in web/mobile applications
Hands-on experience with AI services integration, ideally Google Gemini/Gemini API
Experience working with customized internal applications built on various technologies in a complex business environment
Solid knowledge of Microsoft-based applications, servers, and databases (MS SQL, .NET Framework)
Programming expertise in Java, .NET, Python, or Google Script
Experience with GitHub repositories, Power BI, and Google Workspace administration
Good working knowledge of Google Workspace / Google Suite
Strong skills in IT change management, incident management, troubleshooting, and ticket handling
Experience with one or more relevant programming languages (Java, .NET, Python, Google Script)
Familiarity with Vibe Coding based on Firebase or Codex
Experience with prompt engineering or practical AI enablement
Knowledgeable and experienced with Code Repositories based on GitHub
Comfortable working in an international environment with stakeholders across several countries
Ability to quickly understand non-standard, business-specific application landscapes

Project Details

Project start: asap
Project duration: 9 months + (until 31.12.2026) + extension
Location: remote
Workload: Full-time 100% - 40h per week
International environment with stakeholders across multiple countries in Europe
Technologies: Microsoft Stack, Google Workspace, Firebase, ServiceNow, AI/ML frameworks

Additional context

The application team consists of around 5 people
The broader team size is around 40 people