sipgate Tech Stack

Cloud telephony platform with AI-powered customer engagement and automation

Telecommunications Düsseldorf, North Rhine-Westphalia 201–500 employees Founded 2004 Privately Held

sipgate is a cloud telephony provider built on NestJS, PostgreSQL, React, and TypeScript, now actively building multi-agent AI systems and RAG architectures into its core product. The project mix—frontdesk conversational AI, multi-agent orchestration, LLM backends, and ML/LLM ops pipelines—signals a strategic pivot toward AI-driven customer engagement, supported by adoption of LangChain, LangGraph, and Mistral. Engineering-heavy hiring (3 of 6 open roles) and leadership-level recruits suggest acceleration of this AI roadmap.

Tech Stack 14 technologies

Core StackHubSpot Salesforce Amplitude Mixpanel NestJS PostgreSQL TypeScript React LangChain LangGraph LangSmith Mistral Llama

AdoptingRAG

What sipgate Is Building

◆Challenges

Clear processes and clean data
Scalable end-to-end processes
Data consistency and usability

▲Active Projects

Revenue architecture and process development
Transparent reporting and dashboards
Forecasting and planning
Frontdesk conversational ai platform development
Multi-agent orchestrierung for frontdesk
Llm integration into web backend
Multi-agent workflow development
Rag system construction
Rag-architekturen mit vector databases
End-to-end ml- & llm-ops-pipelines

Hiring Activity

Accelerating6 roles · 4 in 30d

Department

Engineering

Data

Design

Ops

Seniority

Senior

Mid

Manager

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About sipgate

sipgate was founded in 2004 as Germany's first VoIP provider and now serves hundreds of thousands of customers with cloud-based telephony, landline, and mobile services for home and business use. The company operates as a privately held, profitable business headquartered in Düsseldorf with approximately 140 employees. Current product development focuses on frontdesk automation, multi-agent workflows, and revenue architecture—areas where process clarity and data consistency are identified operational gaps. The tech stack spans CRM (HubSpot, Salesforce), analytics (Amplitude, Mixpanel), and full-stack JavaScript/Python foundations (NestJS, PostgreSQL, React, TypeScript).

HeadquartersDüsseldorf, North Rhine-Westphalia

Company Size201–500 employees

Founded2004

Hiring MarketsGermany

Frequently Asked Questions

What is sipgate's tech stack?

sipgate uses HubSpot and Salesforce for CRM, NestJS and TypeScript for backend, PostgreSQL for databases, React for frontend, Amplitude and Mixpanel for analytics, and LangChain, LangGraph, Mistral, and Llama for AI/LLM work.

What is sipgate building with AI?

sipgate is developing a frontdesk conversational AI platform, multi-agent orchestration systems, RAG architectures with vector databases, and LLM integration into its web backend, all tied to its core cloud telephony product.