# Full Stack Developer (AI SaaS) at Clera

Full Stack Developer (AI SaaS) at Clera in Cologne. On-site, full-time. Posted October 25, 2026.

- Company: Clera
- Location: Cologne
- Workplace: On-site
- Job type: Full-time
- Experience: 3+ years
- Posted: 2026-10-25
- Apply: https://jobs.ashbyhq.com/clera/5672b63f-122b-4f8f-bb71-da25596518ea/application
- Source: https://jobmagic.ai/jobs/full-stack-developer-ai-saas-clera-r0cncs

## Requirements

- Several years of professional NestJS experience, typically within a 3 to 10+ year engineering background.
- Very strong TypeScript skills and solid MongoDB experience.
- Hands-on experience with current LLM APIs.
- Native or C2-level German proficiency.

## Description

### About the Role

Join a growing AI SaaS team building chat and voice agents that help customers navigate complex product ranges online and in stores. You'll contribute to the development of customer-facing AI products and their supporting services.

### What You'll Do

- Build and maintain application services using NestJS and TypeScript.

- Work with MongoDB to support product functionality and data needs.

- Integrate current large language model APIs into AI-powered features.

### What We're Looking For

- Several years of professional NestJS experience, typically within a 3 to 10+ year engineering background.

- Very strong TypeScript skills and solid MongoDB experience.

- Hands-on experience with current LLM APIs.

- Native or C2-level German proficiency.

### Compensation & Benefits

Visa sponsorship is not available.

### Location

Remote across Europe, or hybrid from Cologne or Hamburg, Germany. The primary location is Cologne, North Rhine-Westphalia, Germany.