Back End Developer

CDH Professionals Inc; Amsterdam; On-site; EUR 70,000 - 110,000; Full time

Job summary

CDH Professionals Inc is seeking a Backend Engineer with strong Kotlin/JVM experience to build scalable, reliable backend services for a fast-growing technology business.

You will work on microservices, APIs, distributed systems, event-driven architectures with Kafka, and cloud platforms (AWS/Azure/GCP).

A focus on AI-first development, LLMs, AI agents, and modern tooling will shape the design and implementation of core services.

Qualifications

• Experience with Kotlin/JVM backend development.
• Proven experience with microservices and distributed systems.
• Experience with Kafka and event-driven architectures.
• Cloud experience with AWS, Azure, or GCP.

Skills

Kotlin/JVM

Microservices

APIs

Distributed systems

Event-driven architecture

Kafka

Cloud experience

AI-first development

Tools

OpenAI

LangChain

GenAI

LLMs

Job description

We're looking for a Backend Engineer with strong Kotlin/JVM experience to help build scalable, reliable backend services for a fast-growing technology business.

Requirements

• Experience with microservices, APIs, and distributed systems
• Event-driven architecture and Kafka
• Cloud experience (AWS, Azure, or GCP)
• Passion for AI-first development and leveraging LLMs, AI agents, and modern engineering tooling

Nice to Have

• Experience with OpenAI, LangChain, RAG, or GenAI solutions
• High-availability or high-traffic platform experience