Senior Java Engineer

30 - 36 USDNet per hour - B2B
Java

Senior Java Engineer

Java
Zabłocie 43A, Kraków

N-iX

Full-time
B2B
Senior
Remote
30 - 36 USD
Net per hour - B2B

Job description

We are looking for talented Senior Java Engineer to join our team in Poland. 

Our California-based customer is an American global e-commerce leader, one of the most popular and successful websites on the Internet. It provides platform services by connecting millions of sellers and buyers in more than 190 markets around the world. 

The Senior Java Engineer will be a part of the AI Core team to bring new experiences for sellers and buyers leveraging Machine Learning models and other Artificial Intelligence tools to maximize the fun and accuracy of shopping experience. 

Main Responsibilities:

  • Design, build, and maintain efficient, reusable, and reliable code

  • Suggest technical and functional improvements to add value to the product

  • Conduct design and code reviews to deliver high quality product

Minimum Requirements:

  • At least 5 years of proficiency in JAVA or Kotlin technologies

  • Deep experience with the Spring Framework

  • Experience with NoSQL databases (one year at least)

  • Knowledge of different communication protocols such as REST, gRPC, and GraphQL

  • Very good spoken and written knowledge of English language (C1)

  • BSc or MSc in Computer Science, Engineering or relevant field

Preferred Requirements

  • An experience with Apache Kafka and its architecture for real-time data streaming

  • Experience with reactive programming (Project Reactor)

  • Experience with Docker for containerization of applications

  • Familiarity with Kubernetes for container orchestration and management

  • Experience with large-scale distributed systems.

Professional growth:

  • Strong engineering culture

  • Challenging projects and mature teams

  • Personalized on-demand cross-company mentoring support enabling you to learn new things faster

  • Plenty of opportunities to share knowledge and get more experience such as opportunity to mentor others, speak at events, and contribute to pre-sales

  • Direct communication with the customer

  • An individual education budget

  • A friendly, supportive and dynamic work environment

  • Care, comfort and fun

  • A relocation package

  • Flexible working hours

  • Healthcare & sport benefits

  • Corporate events, outstanding parties and team buildings


We offer:

  • Flexible working format - remote, office-based or flexible

  • A competitive salary

  • Personalized career growth

  • Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)

  • Active tech communities with regular knowledge sharing

  • Education reimbursement

  • Memorable anniversary presents

  • Corporate events and team buildings

Tech stack

    English

    B2

    Java

    master

    Reactive Programming

    master

    Kotlin

    nice to have

    AI

    nice to have

Office location

Published: 16.12.2025

About the company

N-iX

N-iX is a global software development service company that helps businesses across the globe create mind-blowing software products. Founded in 2002, today we’re a team of 2,200+ tech-savvy professionals working on innova...

Company profile

Senior Java Engineer

30 - 36 USDNet per hour - B2B
Summary of the offer

Senior Java Engineer

Zabłocie 43A, Kraków
N-iX
30 - 36 USDNet per hour - B2B
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