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April 8, 2026

Lead Backend (Scala) Engineer

Senior • Remote

7,000 - 8,000 USD

Krakow, Poland

N-iX is looking for a Lead Backend (Scala) Engineer to join our team.

Our customer is the European online car market, with over 30 million monthly users and a presence in 18 countries. As a Lead Engineer, you will play a pivotal role in shaping the future of online car markets and enhancing the user experience for millions of car buyers and sellers.


Responsibilities:

  • Developing scalable backend services

  • Designing complex database solutions

  • Designing fast, scalable, and responsive APIs

  • Day-to-day work with AWS

  • Working in cross-functional teams

  • Ready to take ownership and independently drive topics 

Requirements:

  • At least 6+ years of hands-on coding experience

  • Strong expertise with Scala is a must.

  • Experience with Java and Spring Boot.

  • Experience with Object-Oriented/Functional Programming

  • Experience in designing fast, scalable, and responsive APIs

  • Experience developing cloud-native apps using AWS 

  • Experience with SQL and NoSQL (DDB) databases

  • Experience with Kafka

  • Good communication skills (fluent English, at least Upper-Intermediate)

Nice-to-Have:

  • Experience with Search databases - ElasticSearch (using it as a search engine);

  • Frontend experience - JavaScript or Typescript 

  • DevOps Experience - DataDog, Opsgenie, etc.