JVM Software Engineer | 1

Inetum; Warszawa; On-site; PLN 180,000 - 240,000; Full time

Benefits offered by this job

Flexible working hours

Hybrid work model

Cafeteria benefits

Referral bonuses up to PLN 6,000

Revenue sharing opportunities

Job summary

Inetum Polska is seeking a Regular JVM Software Engineer to join a backend team supporting a large modernization initiative. You will contribute to the analysis, design, and implementation of solutions aimed at transforming existing applications and migrating them to a modern technology stack.

The role focuses on Java 17/21, Spring Boot, microservices, REST APIs, and CI/CD. You will work in an Agile environment, write automated tests with JUnit and Mockito, and help improve code quality and

Qualifications

• Commercial experience with Java development in the JVM ecosystem.
• Hands-on with Java 17/21 and Spring Boot.
• Experience building microservices and REST APIs.
• Good SQL and PostgreSQL knowledge.
• JUnit 5 and Mockito experience.
• Maven, Git and CI/CD practices.
• Knowledge of Docker and Kubernetes.
• Experience in Agile teams.
• Interest in AI technologies in software development.
• English and Polish at B2 level.

Responsibilities

• Participate in analysis, design, and implementation of backend solutions.
• Develop and maintain applications using Java and Spring Boot.
• Support migration and modernization of existing systems.
• Design REST APIs and microservices.
• Refactor code for maintainability and scalability.
• Collaborate in Agile teams to deliver objectives.
• Create automated tests with JUnit and Mockito.
• Contribute to CI/CD and software quality processes.

Skills

Java development

Spring Boot

REST APIs

CI/CD

English Polish B2

Tools

PostgreSQL

Maven

Git

Docker

Kubernetes

JUnit 5

Mockito

OpenAPI/Swagger

Jenkins

SonarQube

Job description

Company Overview

Inetum Polska is part of the global Inetum Group and plays a key role in driving the digital transformation of businesses and public institutions. Operating in cities such as Warsaw, Poznan, Katowice, Lublin, Rzeszow, Lodz, the company offers a wide range of IT services. Inetum Polska actively supports employee development by fully funding training, certifications, and participation in technology conferences. Additionally, the company is involved in local social initiatives such as charitable projects and promoting an active lifestyle. It prides itself on fostering a diverse and inclusive work environment, ensuring equal opportunities for all.

Globally, Inetum operates in 19 countries and employs over 28,000 professionals. The company focuses on four key areas:

• Consulting (Inetum Consulting): Strategic advisory services that help organizations define and implement innovative solutions.
• Infrastructure and Application Management (Inetum Technologies): Designing and managing IT systems tailored to clients’ individual needs.
• Software Implementation (Inetum Solutions): Deploying partner solutions from industry leaders like Microsoft, SAP, Salesforce, and ServiceNow.
• Custom Software Development (Inetum Software): Creating unique software solutions to meet specific client needs.

Benefits

• Flexible working hours.
• Hybrid work model, allowing employees to divide their time between home and modern offices in key Polish cities.
• A cafeteria system that allows employees to personalize benefits by choosing from a variety of options.
• Generous referral bonuses, offering up to PLN6,000 for referring specialists.
• Additional revenue sharing opportunities for initiating partnerships with new clients.

Professional Development and Team Support

• Ongoing guidance from a dedicated Team Manager for each employee.
• Tailored technical mentoring from an assigned technical leader, depending on individual expertise and project needs.

Community and Well‑Being

• Dedicated team‑building budget for online and on‑site team events.
• Opportunities to participate in charitable initiatives and local sports programs.
• A supportive and inclusive work culture with an emphasis on diversity and mutual respect.

Job Description

We are looking for a Regular JVM Software Engineer to join a backend development team supporting a large‑scale modernization initiative. In this role, you will contribute to the analysis, design, and implementation of solutions aimed at transforming existing applications and migrating them to a modern technology stack.

Main Responsibilities

• Participate in the analysis, design, and implementation of backend solutions.
• Develop and maintain applications using Java and Spring Boot.
• Support migration and modernization activities within existing systems.
• Design and develop REST APIs and microservices.
• Refactor and improve existing codebases to enhance maintainability and scalability.
• Collaborate with team members in an Agile environment to deliver project objectives.
• Create and maintain automated tests using JUnit and Mockito.
• Contribute to CI/CD and software quality processes.

Project Technology

Backend

• Java 17 / 21
• Spring Boot
• Spring Cloud
• Microservices
• REST APIs
• Maven

Databases

• PostgreSQL
• Sybase

Testing

• JUnit 5
• Mockito

Tools & DevOps

• Kubernetes
• Docker
• Jenkins
• Git
• SonarQube
• CI/CD
• OpenAPI / Swagger

Qualifications

• Commercial experience with Java development within the JVM ecosystem.
• Hands‑on experience with Java 17/21 and Spring Boot.
• Experience building microservices and REST APIs.
• Good understanding of relational databases and SQL.
• Experience working with PostgreSQL.
• Experience with JUnit 5 and Mockito.
• Familiarity with Maven, Git, and CI/CD practices.
• Knowledge of Docker and Kubernetes.
• Experience working in Agile development teams.
• Interest in AI technologies and their practical application in software development.
• English & Polish proficiency at B2 level.

Nice to Have

• Experience with Sybase databases.
• Experience developing stored procedures.
• Familiarity with Gauge.
• Experience refactoring legacy applications and improving code quality, maintainability, and modularity.
• Experience migrating applications to modern technology stacks and microservices architectures.
• Strong understanding of domain‑driven design principles and preserving business logic during system evolution and modernization.

Additional Information

Office location: Warszawa, Poznań, Lublin. This position offers a hybrid or remote work model.

Please be advised that we will contact only selected candidates. We hereby inform you that Inetum Polska Sp. z o.o. has implemented an internal reporting (whistleblowing) procedure. The content of the procedure and the possibility to submit an internal report are available at https://inetum.whispli.com/speakup?locale=pl.