Currency

Senior Java Backend Developer

43 - 52 USDNet per hour - B2B
Java

Senior Java Backend Developer

Java

-, Kraków +4 Locations

Upvanta sp. z o.o.

Full-time
B2B
Senior
Remote
43 - 52 USD
Net per hour - B2B

Tech stack

    Java

    advanced

    Spring

    advanced

    Spring Boot

    advanced

    SQL

    advanced

    RESTful API

    advanced

    Maven

    advanced

    Gradle

    advanced

    Hibernate

    advanced

Job description

Senior Java Backend Developer 

 

This specific position gives you the opportunity to interact within international environment and work with the most recognizable and influential players on the market.

The opportunity

 

Your key responsibilities

• Work as a Senior Java Back-end Developer to contribute in various streams of implementation projects

• Develop and maintain scalable backend services using Java, Spring Boot, and microservices architecture.

• Design and implement secure RESTful APIs, manage database interactions with JPA/Hibernate, and optimize performance.

• Collaborate with cross-functional teams, apply CI/CD practices, and ensure code quality through testing and documentation.

• Participation in design activities


Skills and attributes for success

• Excellent knowledge of Java supported by 8+ years of professional experience

• Many years of experience in commercial projects in development and maintain scalable backend services using Java, Spring, Spring Boot, and microservices architecture

• Experience in design and implementation secure RESTful APIs,

• Practical experience with SQL and one of database engines, manage database interactions with JPA/Hibernate,

• Very good practical knowledge of optimize performance.

• Familiarity with Maven and Gradle

• Experience with source code management, continuous integration and automated deployment

• Very good knowledge and experience in ensuring code quality through testing and documentation.

• Very good English language verbal and written communication

• Experience working in international projects

• Experience in agile / scrum methodology

• Knowledge of Clean Code and Unit Testing

 

To qualify for the role, you must have

• Bachelor's degree in Engineering, IT, Science, other Technical qualification

• 8+ years in a corporate IT environment in a similar positions

• Demonstrable experience of Java and frameworks commonly used in Java projects

• Strong communication skills

Ideally, you’ll also have

• Knowledge of Kafka or RabbitMQ is an advantage

• Certificates proving certain skills: Java, Spring, SQL, AWS or Azure Cloud

• Knowledge of Docker and Kubernetes is an advantage

 

What we look for

As we are a dynamic team of passionate specialists, and we work in international teams all over the world, we will look for the same business acumen. Facing with customers, we are "out of the box thinking" professionals.  Our top performers have a team players attitude, and they cope with challenges on the daily basis. If it all sounds familiar to you - we are looking forward to seeing you on board.

Tech stack

    Java

    advanced

    Spring

    advanced

    Spring Boot

    advanced

    SQL

    advanced

    RESTful API

    advanced

    Maven

    advanced

    Gradle

    advanced

    Hibernate

    advanced

Office location

Published: 17.10.2025

Senior Java Backend Developer

43 - 52 USDNet per hour - B2B
Summary of the offer

Senior Java Backend Developer

-, Kraków

Upvanta sp. z o.o.

43 - 52 USDNet per hour - B2B
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