Senior AI-Native Backend Engineer for Agent Platform

Aimlroles; Netherlands; Remote; EUR 143.000 - 184.000; Vollzeit

Zusammenfassung

Justworks (Netherlands) is seeking a Senior Software Engineer to build AI-native systems within a small, autonomous team. You will own large parts of the stack, design scalable agent platforms, and drive pragmatic technical decisions in an evolving product space.

You’ll work on LLM-powered agent design, backend services, tool integrations, and knowledge infrastructure, delivering production-ready software used by our operations teams daily.

Qualifikationen

• 5+ years of backend engineering experience building and operating production systems.
• Hands-on experience with LLMs and AI agents (orchestration, RAG, tool/function calling, or similar).
• Strong API design and system integration skills
• Product-minded: questions requirements and contributes to product decisions, not just execution
• Proven ownership of complex projects in ambiguous, early-stage environments

Aufgaben

• Design, build, and own core components of the agent platform, from the orchestration layer to the tool integrations connecting it to internal systems.
• Build and evolve the capabilities layer: APIs, data access patterns, and service integrations for agents to execute operational workflows.
• Architect the knowledge and memory infrastructure, allowing agents to retrieve data and act across our systems.
• Design and implement the trust and safety framework, including audit trails, human-in-the-loop controls, and guardrails for safe AI-driven operations.
• Contribute to agent evaluation and testing infrastructure, defining how we measure accuracy, reliability, and regression across agent behaviors.
• Partner directly with Operations to understand workflows and translate process knowledge into agent capabilities.
• Mentor other engineers on the team as it grows.

Kenntnisse

Backend engineering

LLMs & AI agents

API design

Product-minded

Ownership of projects

Tools

Golang

Ruby on Rails

Javascript

Java

Python

VueJS

MySQL

Kafka

AWS

Docker

Kubernetes

Terraform

CircleCI

DataDog

Jobbeschreibung

Justworks (Netherlands) is seeking a Senior Software Engineer to build AI-native systems within a small, autonomous team. You will own large parts of the stack, design scalable agent platforms, and drive pragmatic technical decisions in an evolving product space.

You’ll work on LLM-powered agent design, backend services, tool integrations, and knowledge infrastructure, delivering production-ready software used by our operations teams daily.