Senior Backend Developer

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the RoleA fast-growing, Series A-backed AI search analytics company in Berlin is looking for a Senior Backend Developer to architect and build the systems that power its AI-driven recommendations platform

You'll work at the intersection of scalable backend engineering and cutting-edge AI integrations, collaborating closely with product, data, and frontend teams to deliver reliable, high-performance insights for marketing teams worldwide.

Formal degrees or fixed years of experience are not required — demonstrated excellence and the ability to move fast are what matter most.

What You'll DoArchitect and build backend systems powering AI-driven recommendations.

Design, implement, and maintain scalable APIs, data pipelines, and databases delivering reliable analytics insights.

• Collaborate with product, data, and frontend teams to translate.

Requisitos

into robust technical solutions.Develop and maintain automated tests and CI/CD pipelines to ensure quality and rapid delivery.Integrate with AI model APIs (OpenAI, Claude, Perplexity, Gemini, Llama) to support real-time recommendations.Ensure security, authentication/authorization, and data privacy across backend services.Implement end-to-end changes across backend services with clean, maintainable code.Build and scale REST/GraphQL APIs and data models to support AI-driven product features.Actively leverage AI-assisted developer tools (e.g

Cursor) to enhance productivity while keeping committed code concise and clear.

What We're Looking ForRequired:Deep proficiency in TypeScript.

Hands-on experience with the core stack: GCP (Cloud Functions, Cloud Tasks), PostgreSQL, Firestore.

Experience integrating with AI model APIs such as OpenAI, Claude, Perplexity, Gemini, and/or Llama for real-time use cases.

Strong system design and architectural decision-making abilities.

Experience designing and building scalable REST and/or GraphQL APIs, data pipelines, and data models.

Experience implementing automated testing (unit/integratio.