Senior Java Engineer

Mindbox Sp. z o.o.; Kraków; Hybrid; PLN 180,000 - 260,000; Full time

Benefits offered by this job

Interpolska Health Care

Multisport card

Warta Insurance

High quality equipment

Job summary

Mindbox Sp. z o.o. in Kraków is looking for a Senior Java Engineer to modernize legacy Java applications and build scalable microservices. You will improve observability and security while using AI-assisted tools to accelerate delivery and maintain high code quality.

You will collaborate with Product Owners, IT specialists and Architects to design solutions and drive DevOps practices across environments. Hybrid work with two days per week in Kraków.

Qualifications

• 5+ years of experience developing and supporting distributed systems in Java.
• Ability to build applications and microservices using Java 17 and Spring Boot.
• Strong knowledge of modern Java frameworks and patterns (Spring Cloud).
• Familiarity with DevOps tools and CI/CD practices.
• Proficient in app lifecycle management tools: JIRA, Confluence, Ansible, Jenkins.

Responsibilities

• Proactively engage in service management activities (Incident, Problem, and Service Delivery)
• Modernize and maintain legacy systems using AI-assisted coding tools (GitHub Copilot, Claude Code)
• Collaborate with Product Owners, IT specialists, and Architects to design scalable solutions
• Analyse technical and non-technical requirements; provide service-oriented recommendations
• Design and build robust, secure microservices using modern Agile methods and DevOps principles
• Develop observability tools for monitoring, alerting, incident detection, and performance optimization
• Drive CI/CD automation and ensure release readiness across environments
• Note: Detailed project information will be shared during the recruitment process.

Skills

Distributed systems

Java 17

Spring Boot

Spring Cloud

CI/CD / DevOps

Cross-team collaboration

Analytical & communication skills

Tools

JIRA

Confluence

Ansible

Jenkins

GitHub Copilot

Job description

Senior Java Engineer

Miejsce pracy: Kraków

Technologies we use

Expected

• Java
• Spring Boot
• Jira
• Confluence
• Ansible
• Jenkins

Operating system

• Windows

About the project

As a Senior Software Engineer, you will join our Kraków-based team to work on evergreening legacy Java applications and supporting production systems. You will build modern Java microservices, improve observability and reliability, and use AI-driven tools like GitHub Copilot to accelerate delivery while maintaining high standards of code quality and security.

Sounds like your kind of challenge?

This is how we organize our work

This is how we work

• agile

Your responsibilities

• Proactively engage in service management activities (Incident, Problem, and Service Delivery)
• Modernize and maintain legacy systems using AI-assisted coding tools (GitHub Copilot, Claude Code)
• Collaborate with Product Owners, IT specialists, and Architects to design scalable solutions
• Analyse technical and non-technical requirements; provide service-oriented recommendations
• Design and build robust, secure microservices using modern Agile methods and DevOps principles
• Develop observability tools for monitoring, alerting, incident detection, and performance optimization
• Drive CI/CD automation and ensure release readiness across environments
• Note: Detailed project information will be shared during the recruitment process.

Our requirements

• 5+ years of experience in developing and supporting distributed systems in Java
• Ability to build applications and microservices using Java 17 and Spring Boot
• Strong knowledge of modern Java frameworks and patterns (Spring Cloud)
• Familiarity with DevOps tools and CI/CD practices
• Proficient in app lifecycle management tools: JIRA, Confluence, Ansible, Jenkins
• Excellent analytical and communication skills; ability to work across global teams
• Structured, independent work approach with high attention to detail
• Technology stack: Java SE, Spring Boot, Spring Cloud, Angular, GCP, Redis, REST APIs, Ansible, Jenkins

Optional

• Knowledge of vulnerability remediation practices
• Experience in optimizing applications for observability and resiliency
• Hands-on exposure to AI-enabled SDLC practices

What we offer

• Flexible cooperation model – choose the form that suits you best (B2B, employment contract, etc.).
• Hybrid work setup – remote days available depending on the client’s arrangements - 2 days a week from the office in Kraków
• Collaborative team culture – work alongside experienced professionals eager to share knowledge.
• Continuous development – access to training platforms and growth opportunities.
• Comprehensive benefits – including Interpolska Health Care, Multisport card, Warta Insurance, and more.
• High quality equipment – laptop and essential software provided.

This is how we work on a project

• Continuous Deployment
• Continuous Integration
• testing environments

Benefits

• sharing the costs of sports activities
• private medical care
• sharing the costs of professional training & courses
• life insurance

Joining this project you’ll become part of Mindbox – a tech-driven company where consulting, engineering, and talent meet to build meaningful digital solutions. We’ll back you up every step of the way, accelerate your development, and ensure your skills make a difference.

Mindbox Sp. z o.o.

At Mindbox, we connect top IT talents with technology projects for leading enterprises across Europe.

Our focus is on matching your skills with work that matters – projects that use modern tech stacks, solve real business challenges, and give you space to grow. By joining us, you’ll deliver technology solutions for well-known brands, supported by the Mindbox team that values knowledge-sharing and continuous development. We make sure you have the tools, flexibility, and guidance to do your best work – and to keep moving forward in your career.