Hybrid Java Backend Engineer | REST & Microservices

Codest Ltd. Company No. 12590542, VAT number: GB363431020; Kraków; Hybrid; PLN 160,000 - 260,000; Full time

Job summary

The Codest in Kraków is seeking a Java backend developer to build and maintain Java-based services and REST APIs, collaborating with cross-functional teams to deliver scalable solutions. You will participate in the full software development lifecycle, including CI/CD, automated tests, code reviews, and production support, with a strong focus on reliability, security, and code quality.

This is a hybrid role requiring 6-8 days per month at the Kraków office, offering an enriching environment and

Qualifications

• Advanced English in speaking and writing.
• Strong commercial experience with Java (8+/11+/17+/21) and Spring Boot.
• Hands-on experience with REST APIs, microservices, and SQL databases (PostgreSQL, Oracle).
• Familiarity with React, MQ/Solace, Redis, and Kubernetes.
• Experience with CI/CD, Git, Maven/Gradle, and DevOps tooling.
• Knowledge of monitoring and observability tools (Grafana, Splunk, Prometheus, Jenkins, etc.).
• Understanding of application security and testing practices.
• Experience working in Agile / DevOps environments.
• Strong communication skills and ability to work across distributed teams.

Responsibilities

• Develop and maintain Java backend services, REST APIs, and microservices.
• Collaborate with cross-functional teams to deliver scalable solutions.
• Support production systems, resolve incidents, and troubleshoot issues.
• Contribute to system architecture focused on performance and reliability.
• Work in Agile teams using CI/CD, automated testing, and code reviews.
• Maintain technical documentation and improve engineering practices.
• Act as a technical SME for application and support-related topics.
• Identify and manage risks, dependencies, and delivery blockers.

Skills

Java

Spring Boot

REST APIs

Microservices

SQL databases

PostgreSQL

Oracle

Kubernetes

Redis

CI/CD

Git

Maven/Gradle

DevOps tooling

Security testing

Agile / DevOps

Effective communication

Job description

The Codest in Kraków is seeking a Java backend developer to build and maintain Java-based services and REST APIs, collaborating with cross-functional teams to deliver scalable solutions. You will participate in the full software development lifecycle, including CI/CD, automated tests, code reviews, and production support, with a strong focus on reliability, security, and code quality.

This is a hybrid role requiring 6-8 days per month at the Kraków office, offering an enriching environment and