Junior Connectivity Engineer - Amsterdam Hub

Katanox; Amsterdam; On-site; EUR 42,000 - 60,000; Full time

Job summary

Katanox in Amsterdam is hiring an early-career Software Engineer for the Connectivity team. You will join a hands-on group, own small features end-to-end from your first weeks, and pair with senior engineers to grow into larger integrations.

We value solid fundamentals in data structures and algorithms, and you will work with Kotlin or Java and real third-party APIs, building reliable systems for B2B workflows and payments.

Qualifications

• Strong fundamentals: data structures and algorithms.
• Experience with APIs and typed languages (Kotlin/Java).
• Fluent English; Amsterdam-based or nearby location preferred.

Responsibilities

• Build and extend integrations with hotel systems and the Katanox marketplace.
• Ship changes to the public API used by travel buyers.
• Work with real third-party APIs, handling retries and edge cases.
• Own services in production: diagnose and fix issues, add monitoring.

Skills

Kotlin

Java

APIs

Data structures

Algorithms

Education

Bachelor's degree in CS or related

Job description

Katanox in Amsterdam is hiring an early-career Software Engineer for the Connectivity team. You will join a hands-on group, own small features end-to-end from your first weeks, and pair with senior engineers to grow into larger integrations.

We value solid fundamentals in data structures and algorithms, and you will work with Kotlin or Java and real third-party APIs, building reliable systems for B2B workflows and payments.