Full stack Developer

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

We are seeking a Full Stack Developer to support the migration of a critical web application from Windows servers to a target application server hosted on Red Hat Linux, and subsequently provide development and maintenance for both the web layer and Oracle backend components post-migration. This role includes system integration, UAT/OAT support, defect resolution, production readiness, and ongoing enhancements in PL/SQL and scripting for data handling and automation.

This two-phase role is crucial for ensuring smooth migration completion in 2026 and delivering high-quality application development afterward.

Sounds like your kind of challenge?

• 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 - 6 days a month 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

1. Environment & Deployment Coordination

• Validate configuration and operational readiness of UAT environments on Red Hat Linux
• Support installations in OAT and Production (deployment preparation, cutover readiness, post-go-live validation)
• Troubleshoot integration issues involving logs, services, configurations, and permissions

2. Testing & Defect Resolution

• Support functional, technical, and regression testing in UAT and OAT phases
• Debug and resolve issues discovered during user acceptance and operational acceptance testing
• Contribute to release stability and operational resilience prior to go-live

3. Documentation & Collaboration

• Maintain technical documentation for deployment steps, configurations, and known workarounds
• Work closely with developers, testers, infrastructure, release, and operations teams to execute migration successfully

Application Development & Maintenance (Post-migration)- Develop web functionality using Java, Spring Boot, Vue.js, HTML, JSP

• Create and optimize data pipelines into Oracle database with PL/SQL
• Build automation scripts for data checks, logging, and process monitoring in Shell scripting on Linux
• Perform defect resolution, incident handling, and small-scale enhancements for Oracle PL/SQL and web components
• Deliver secure, efficient, and well-documented code following group standards

Note: Detailed project information will be shared during the recruitment process.

Technical Skills (Required)

• Web: Java, Spring Boot, Vue.js, JavaScript, HTML, JSP
• Database & Backend: Oracle PL/SQL, Linux Shell scripting
• DevOps: GitHub, Ansible; experience in deployment and troubleshooting in Linux environments
• Strong experience debugging configuration and runtime issues on Red Hat Linux
• Familiarity with test-driven migration processes and ability to support regression testing

Deliverables ExpectedMigration:**

• UAT defect fixing and sign-off support
• OAT installation and testing support through sign-off
• Production deployment readiness and go-live assistance
• Technical documentation for configuration, deployment, and operational guidance

Development:

• New Oracle database pipelines via PL/SQL
• Linux shell scripts for automation, logging, and operational monitoring
• Defect resolution and performance tuning for application components

What You Bring- Proven experience as Full Stack Developer handling both web application migration and backend development

• Strong ability to troubleshoot Linux-based environments and automate tasks via scripting
• Excellent communication skills to work cross-functionally in global teams
• Problem-solving mindset and capability to work under strict timelines for go-live readiness

Nice to Have- Experience in data quality frameworks and ETL processes

• Familiarity with release management and runbook preparation
• Understanding of performance optimization techniques for Oracle and application servers

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.