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Sr Java Developer

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Onsite

Sr Java Developer

7N

Sr Java Developer

Skills

PythonJavaMicroservicesSpring BootPostgreSQLMachine LearningAWSJavascript

8 months ago

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Important information


Location:

Warsaw, Poland

Work mode:

Onsite

Published on:

16 September 2026

What they need


MUST HAVE:

  • 5+ years of experience in Java and Spring
  • AWS experience - is able to use and manage cloud services (EKS, SQS/SNS, S3)
  • DevOps and infrastructure - we're looking for someone who could support DevOps team
  • Following good coding practices like unit testing
  • Understanding of microservice architecture
  • Proactive in finding solutions and eager to learn
  • Good command of English (preferably C1)

NICE TO HAVE:

  • JavaScript (jQuery, Dojo, Angular.js)*
  • Spock i Groovy
  • OAS2+
  • Knowledge of NoSQL Databases
  • Proficiency in DDD
  • Experience in Python or with machine learning
  • Resource must be available in CET time zone

Java Technology stack

  • Java 11+
  • REST
  • Spring Boot (security, jpa, web services, etc.)
  • Hibernate/JPA
  • RDBMS (PostgreSQL ideal)
  • Maven

About 7N

Over decades, 7N has been part of several waves of digitalization. Today, our consultants work across industries and geographical borders to deliver the projects that define the new digital realities. We offer a highly specialized portfolio of IT services and solutions delivered by the top 3% of IT professionals. Our expertise spans across many industries, providing digital transformation across all phases of the IT project life cycle.

By engaging early with 7N, you benefit from our experience and expertise when defining the project scope and strategic needs, and you gain flexibility to accommodate changing demands while maintaining control and ownership of IT development.

What is in it for you ?

  • An excellent opportunity to work on latest technologies and be amongst top 3% of technical consultants in your domain.
  • Excellent health benefits.
  • Best in industry salary structure - without any hidden deductions.
  • An opportunity to experience work culture that provides - flexibility, Sensitivity, Growth and Respect.
  • An opportunity get associated with a value driven organization.

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