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Clera

Senior Full Stack Developer (AI SaaS)

Cologne

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hirly's read of this role

Role family
Engineering
Seniority
Senior
Country
DE
Work mode
On-site / unstated
First seen by hirly
18 Oct 2026

Derived automatically from the posting. Upload your resume above to see how the role scores against it.

the posting

About the Role

Join a European AI-powered B2B SaaS team building chat and voice agents that help customers navigate complex product ranges online and in stores. You will develop the platform and integrations behind these customer-facing experiences.

What You'll Do

Build and maintain full-stack features for an AI SaaS platform using TypeScript and NestJS.

Integrate current LLM APIs into chat and voice agent experiences.

Develop and support backend services and data workflows using MongoDB.

Contribute to product features that help customers search and make decisions across complex product catalogs.

What We're Looking For

Several years of professional experience with NestJS.

Very strong TypeScript skills and solid MongoDB experience.

Hands-on experience using current LLM APIs.

Based in Europe, or able to work in a hybrid arrangement from Cologne or Hamburg.

Compensation & Benefits

Visa sponsorship is not available.

Location

Remote across Europe, with hybrid options in Cologne or Hamburg. Primary location: Cologne, Germany.

Original posting on Clera's site ↗

Listed on hirly, a job board. hirly is not the employer: Clera is hiring for this role.

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