Java Developer

thecodest; Warszawa; Hybrid; PLN 150,000 - 230,000; Full time

Job summary

The Codest in Poland is seeking a skilled Java backend developer to build and maintain Java-based services and REST APIs. You will collaborate with cross-functional teams, participate in CI/CD, automated testing, and code reviews, and contribute to reliable, secure system design.

You will work in a hybrid setup, visiting the Kraków office 6-8 days per month. Strong English, experience with Java, Spring Boot, and microservices are essential for success.

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.
• Self-driven, customer-oriented, and comfortable owning tasks end-to-end.

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 8+/11+/17+/21

Spring Boot

REST APIs

Microservices

SQL (PostgreSQL, Oracle)

React

MQ/Solace

Redis

Kubernetes

CI/CD

Git

Maven/Gradle

DevOps tooling

Monitoring/Observability

Security & Testing

Agile/DevOps

Communication

Self-driven/Customer-oriented

Tools

Git

Maven/Gradle

CI/CD tooling

Kubernetes

Jenkins

Job description

Hello World!

We are The Codest - International Tech Software Company with tech hubs in Poland delivering global IT solutions and projects. Our core values lie in “Customers and People First” approach that prioritises the needs of our customers and a collaborative environment for our employees, enabling us to deliver exceptional products and services.

Our expertise centers on web development, cloud engineering, DevOps and quality. After many years of developing our own product - Yieldbird, which was honored as a laureate of the prestigious Top25 Deloitte awards, we arrived at our mission: to help tech companies build impactful product and scale their IT teams through boosting IT delivery performance. Through our extensive experience with product development challenges, we have become experts in building digital products and scaling IT teams.

But our journey does not end here - we want to continue our growth. If you’re goal-driven and looking for new opportunities, join our team! What awaits you is an enriching and collaborative environment that fosters your growth at every step.

Project Description

In this role, you’ll develop and maintain Java-based services and REST APIs, collaborate closely with cross-functional teams, and contribute to system architecture with a strong focus on reliability, security, and code quality. You’ll also take part in the full software development lifecycle, including CI/CD processes, automated testing, code reviews, and production support.

Please note: this is a hybrid position, you will be expected to come into the office 6-8 days per month overall (the office is located in Kraków).

Your 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

Key Requirements

• 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
• Self-driven, customer-oriented, and comfortable owning tasks end-to-end

Recruitment process

• 30 minute screening call online with our recruiter
• 1 hour screening call online with our developer
• 1 hour technical call with the client
• 30 minute call with the team leader
• Offer