Senior Java Developer Java, Spring, SQL, Git Warsaw, Gdańsk, Gdynia

Diverse CG Sp. z o.o. Sp.k.; Town of Poland (NY); On-site; USD 90,000 - 120,000; Full time

Benefits offered by this job

Private medical care

Co‑financing for the sports card

Constant support of dedicated consultant

Job summary

Diverse CG Sp. z o.o. Sp.k. in the Town of Poland is seeking a skilled Java Developer to participate in all software development lifecycle phases. The role involves Java application development, collaborating with stakeholders, and mentoring fellow developers to enhance the team’s capabilities.

The ideal candidate will have strong experience with Java and Spring frameworks, along with a solid understanding of SQL and API integrations. The company offers benefits like private medical care and sports card financing.

Qualifications

• Strong experience in developing and maintaining Java-based applications.
• Experience working with relational databases and SQL.
• Fluent English in both spoken and written form.

Responsibilities

• Participate in all phases of the software development lifecycle.
• Design and implement integrations using REST APIs and messaging technologies.
• Mentor and support other developers as a technical sparring partner.

Skills

Java

Spring Boot

PostgreSQL

Spring

Hibernate

JMS/MQ

CI/CD

AI-assisted development

Tools

Git

OpenAPI

AsyncAPI

Job description

As a recruitment company, DCG understands that every business is powered by experienced professionals. Our management style and partnership approach enable us to meet your needs and provide continuous support. Due to our ongoing growth and the large number of recruitment projects we undertake for our partners, we are currently looking for:

Responsibilities:

• Participate in all phases of the software development lifecycle, including:
• Requirements analysis
• Architecture and solution design
• Development
• Testing
• Deployment
• Collaborate with business stakeholders and financial analysts to translate requirements into scalable and maintainable technical solutions
• Design and implement integrations using REST APIs, messaging technologies, and event‑driven communication patterns
• Contribute to application quality through code reviews, technical guidance, and engineering best practices
• Mentor and support other developers as a technical sparring partner within the team
• Promote continuous improvement through the responsible use of AI‑assisted development and automation
• Ensure application performance, maintainability, and compliance with established engineering standards

Requirements:

• Strong experience in developing, enhancing, and maintaining Java-based applications
• Strong knowledge of: Java 21, Spring Boot and PostgreSQL
• Messaging technologies (e.g. JMS, MQ)
• Strong proficiency in Java frameworks, including Spring and Hibernate
• Experience designing and developing solutions supporting complex business processes
• Experience working with relational databases and SQL
• Knowledge of: OpenAPI and AsyncAPI
• Experience with version control systems (Git) and CI/CD pipelines
• Strong understanding of software design patterns and object-oriented programming principles
• Experience participating in the full software development lifecycle (SDLC): requirements analysis, solution design, development, testing and deployment
• Ability to translate business and regulatory requirements into technical solutions
• Experience collaborating with business stakeholders and analysts
• Experience mentoring developers, performing code reviews, and supporting solution design decisions
• Strong collaboration, analytical, and problem‑solving skills
• Practical experience using AI‑assisted development and automation tools to improve productivity, quality, and knowledge sharing
• Fluent English (spoken and written)

Offer:

• Private medical care
• Co‑financing for the sports card
• Constant support of dedicated consultant

Personal Consulting Agency (License No. 4642)