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Full Stack Developer (AI SaaS)

CleraCologne🇩🇪GermanyPosted 25 Oct 2026

Why this role stands out

Accelerate your career at the forefront of AI innovation by building cutting-edge voice and chat agents within Clera’s collaborative, high-impact development team. This role is perfect for a skilled engineer who thrives on mastering LLM integrations and seeks the flexibility of hybrid or remote work across Europe. Apply today to help shape the future of customer-facing AI technology.

Quick overview

SeniorityMid Senior
Employment typeFull Time
Work modeOn Site
LocationCologne, Germany
Posted1 hour ago
MongoDBNestJSLLMTypeScript

Job 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.

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ApplyOr apply on Clera's site