Senior Java Backend Engineer – Scalable Microservices

GFT Technologies SE; Polska; On-site; PLN 163,000 - 249,000; Full time

Benefits offered by this job

Open to hybrid work (Kraków area)

Professional growth & certifications

Comprehensive benefits package

Online training and e-learning access

Social events

Job summary

GFT Technologies SE in Poland is seeking a backend Java expert to design and evolve high-performance services and APIs for a global financial client. You will work hands-on in a collaborative, international environment with emphasis on reliability, security, and engineering quality.

You will design and implement backend services, REST APIs, and microservices, collaborating with product managers and architects, and contributing to CI/CD and DevOps practices. Fluency in English is essential.

Qualifications

• Commercial experience with Java 8+ or 11+ or 17+.
• Strong knowledge of Spring and Spring Boot.
• Hands-on experience with REST APIs.
• Hands-on experience with microservices architecture.
• Experience with SQL databases such as PostgreSQL or Oracle.
• Familiarity with CI/CD pipelines.
• Experience with Git.
• Experience with Maven or Gradle.
• Experience working in Agile or DevOps teams.
• Very good English communication skills.

Responsibilities

• Design and develop backend services in Java.
• Build and maintain RESTful APIs and microservices used at scale.
• Collaborate with product managers, architects, and engineers to deliver new features.
• Contribute to system design with focus on performance, reliability, and security.
• Work in Agile delivery with CI/CD pipelines and DevOps ways of working.
• Review code and write automated tests to ensure quality and maintainability.
• Support applications in production and troubleshoot issues when needed.
• Continuously improve code quality, tooling, and engineering practices.

Skills

Java

Spring/Spring Boot

REST APIs

Microservices

SQL databases

CI/CD

Git

Maven/Gradle

Agile/DevOps

English communication

Tools

Git

Maven/Gradle

CI/CD pipelines

Docker

Kubernetes

Databases (PostgreSQL/Oracle)

Job description

GFT Technologies SE in Poland is seeking a backend Java expert to design and evolve high-performance services and APIs for a global financial client. You will work hands-on in a collaborative, international environment with emphasis on reliability, security, and engineering quality.

You will design and implement backend services, REST APIs, and microservices, collaborating with product managers and architects, and contributing to CI/CD and DevOps practices. Fluency in English is essential.