Must have

• Java

• English

• Polish

Requirements description

Position Overview

Under limited supervision, designs, develops, tests, and debugs complex backend software components and systems using modern Java technologies.

The Software Engineer plays a key role in developing scalable, high-performance applications, contributes to architecture discussions, and ensures technical excellence across the software development lifecycle.

Duties / Responsibilities

• Design, implement, and maintain backend services and APIs using Java 8+ and Spring Boot.
• Collaborate with architects and senior engineers to build scalable, cloud-native solutions.
• Develop microservices aligned with domain-driven design principles.
• Write clean, maintainable, and testable code following best practices.
• Perform code reviews, ensure adherence to coding standards, and provide constructive feedback.
• Troubleshoot and optimize application performance and reliability.
• Work closely with QA, DevOps, and product teams to deliver high-quality releases.
• Contribute to automation and continuous integration / continuous delivery (CI/CD).
• Participate in Agile ceremonies and collaborate across distributed teams.
• Stay current with emerging Java frameworks, libraries, and ecosystem tools.

Qualifications

Must-Have Skills

• 4+ years of professional experience in backend development with Java.
• Strong knowledge of Java 8 or newer, including functional programming features, streams, and concurrency.
• Hands-on experience with Spring Boot, Spring Data JPA, and Spring Security.
• Experience designing and consuming RESTful APIs and working with JSON/XML data formats.
• Solid understanding of microservices architecture and inter-service communication (REST/gRPC).
• Practical experience with SQL and relational databases (Oracle, PostgreSQL, or MySQL).
• Familiarity with NoSQL databases (MongoDB, Redis, or Cassandra).
• Experience with JUnit, Mockito, or similar testing frameworks.
• Knowledge of Git, Maven/Gradle, and CI/CD tools such as Jenkins, GitLab CI, or GitHub Actions.
• Experience working in Linux/Unix environments.
• Strong debugging, troubleshooting, and problem-solving skills.
• Good communication skills and a collaborative mindset.

Nice-to-Have Skills

• Experience with Docker and Kubernetes.
• Exposure to cloud platforms ( GCP, AWS).
• Understanding of asynchronous processing ( Kafka, RabbitMQ, JMS).
• Familiarity with observability tools ( Prometheus, Grafana )
• Experience in Agile / Scrum development environments.
• Positive attitude, ownership mindset, and openness to mentoring junior developers.

Education

Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a related field.