AI Engineer – Backend

WBS

. Develop and implement maintainable, thoroughly tested backend services and full-stack applications, with a focus on Clean Code, TDD, and sound architecture .

Posted 9/19/2026full-timeRemote • Germany, Austria, SpainMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates advanced proficiency in Python for backend development and data engineering, with a strong foundation in Clean Code and Test-Driven Development. Capable of integrating AI applications and optimizing business processes through effective collaboration and communication with diverse teams.

Highest-signal resume keywords

Python DevelopmentClean Code PracticesTest-Driven DevelopmentRAG PipelinesAI Application Integration

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Backend DevelopmentData EngineeringAPI DesignAutomated TestingCI/CD PipelinesFrontend KnowledgeVector DatabasesLLM-Based ApplicationsTypeScriptC#

Soft Skills

Task ManagementCommunication SkillsCollaboration

Tools & Technologies

GitHub CopilotClaude Code

Industry Keywords

AI ApplicationsClean ArchitectureBusiness Process OptimizationTechnical DocumentationGerman Language Skills

Tech Stack

Tools & technologies

PythonReactTypeScript

About the role

Key responsibilities & impact

Develop and implement maintainable, thoroughly tested backend services and full-stack applications, with a focus on Clean Code, TDD, and sound architecture
Develop business-specific AI applications such as RAG systems, assistants, and generative text processing based on existing Large Language Models
Use modern AI tools such as GitHub Copilot and Claude Code to increase development speed and quality
Integrate AI models and services into existing systems and workflows
Develop data integration solutions for continuous, automated data flows
Prepare and process data for AI applications
Design, document, and deploy clean APIs
Build automated tests and CI/CD pipelines
Continuously evaluate and improve software components and RAG pipelines
Contribute to optimizing business processes and achieving strategic company objectives

Requirements

What you’ll need

5+ years of professional software development experience, ideally in a senior role
Advanced knowledge of Python for backend development, data engineering, and prototyping, or a comparable language
TypeScript and/or C# is a plus
Practical experience with Clean Code, Test-Driven Development, automated testing, and code reviews
In-depth knowledge of RAG pipelines and vector databases
Practical experience with LLM-based applications
Strong backend foundation combined with frontend knowledge, such as TypeScript/React
Ability to manage multiple tasks, set priorities, and focus solutions on tangible value
Ability to communicate technical concepts to non-technical stakeholders and collaborate with diverse teams
German language skills at least at C1 level, both written and spoken
Residence in Germany, Austria, or Spain
Experience with AI tools such as GitHub Copilot or Claude Code, or with agentic development, is desirable
Ability to plan and execute development projects is desirable
Clear and precise technical documentation skills are desirable
Willingness to develop creative ideas and experiment with new approaches is desirable

Benefits

Comp & perks

30 days of annual leave
Home office options
Sabbatical
Up to 180 days of working abroad
Vacation and workations at our seminar houses in Berlin and Pommritz
Numerous offers and discounts through Corporate Benefits
Company running events
Sports and relaxation programs with Voiio
JobRad bicycle leasing
Corporate fitness with EGYM Wellpass
Yoga retreats
Dietary supplements
Ergonomic workplace equipment
Coaching and consulting services
Various training opportunities
Three professional development days
Individual professional and personal development opportunities
LinkedIn Learning
Team development programs
Leadership Management Program
Microsoft 365 with Copilot
Excellent compatibility between career and family life
Paid leave to care for sick children
Family vacations at our seminar houses
Paid special leave for caring for relatives
Digital childcare and tutoring with Voiio
Annual celebrations
Mindful meeting culture
Onboarding seminars and onboarding buddies
Open culture of learning from mistakes and giving and receiving feedback
Autonomous work
Meaningful work with positive social impact
Commitment to the common good with a focus on sustainability
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