Software Engineer (Backend) — AI Agent Systems

Location : Germany or Netherlands

Language : Fluent German or Dutch (C2 or Native-Level)

Type : Full-time

Work setup : Remote for now, transitioning to an office-first culture as local teams expand.

Contract : Official employment under Dutch / German labor law

Seniority : Mid–Senior Level (2–6 years of experience)

About our client

Our client is one of the fastest-scaling AI companies in Europe, backed by €134M in recent funding from top-tier investors (Index, Bezemer). The company builds enterprise-grade multilingual AI agents for voice, chat, and email, already used by leading brands in telecom, energy, banking, insurance, mobility, and healthcare.

Their AI agents handle over 300,000 customer interactions every week, delivering automation with a natural human-like experience - including real-time problem solving, intent understanding, and contextual reasoning The company combines a powerful AI platform with strong local implementation support, enabling enterprises to deploy production AI agents at scale in any language and any market.

Why this company is unique

€134M fresh funding (summer 2025)

Live in production with more than 10 enterprise clients

Handles tens of thousands of concurrent conversations with enterprise-grade reliability

Fully compliant and secure : monitoring, dashboards, guardrails, auditability

Solves real business challenges : invoices, contracts, subscriptions, telecom / energy issues, banking queries

Built by ex-AWS, ex-SAP, ex-McKinsey, TUM / RWTH engineers

Not research - real AI deployed at massive scale

You will join a team creating AI systems used daily by millions of end users.

About the Role

We are hiring a backend-focused Software Engineer to build production-grade AI agent systems handling millions of customer interactions. This is not a research / ML role - the work is core software engineering : building backend systems, APIs, distributed services, integrations, AWS architecture, and performance-critical features. You will work on the systems that run the company’s voice and chat agents.

Your Responsibilities

Build backend components powering AI voice / chat agents

Design and maintain APIs, microservices, and system integrations

Develop reliable, scalable backend services on AWS

Integrate client systems (CRM, ticketing, telephony, internal tools)

Improve performance, latency, and reliability of core agent systems

Contribute to infrastructure automation and deployment pipelines

Collaborate closely with product and ML engineering teams

Requirements

2–6 years of professional experience as a Software Engineer or Backend Engineer

Strong experience in one of : Java, Go, TypeScript, or Python

Hands-on backend development : APIs, services, integrations

Practical experience with AWS (Lambda, ECS, DynamoDB, SQS / SNS, API Gateway, etc.)

Understanding of distributed systems, async patterns, event-driven designs

Solid system design fundamentals and clean coding mindset

Fluent German or Dutch (C2 or Native-Level), plus very strong English

Nice to Have

Experience with LLMs, RAG, or AI agents

Familiarity with ASR / TTS, telephony, Twilio, WebRTC

Experience with enterprise clients or B2B SaaS products

Background working with high-scale or latency-sensitive systems

Why This Role Is Special

Work directly with a world-class engineering team (ex-AWS, SAP, McKinsey, TUM, RWTH)

Build real AI products used by major European enterprises

Huge technical ownership and ability to influence architecture

Modern stack, fast product cycles, no bureaucracy

Opportunity to grow into Senior / Tech Lead as the team scales