Full Stack Developer with Java

• REQ-10121655
• 16/09/2026
• IT Engineering
• Katowice, Poland
• ING Hubs

ING Hubs Poland is hiring!

The expected salary for this position: 15 000 - 22 000 PLN gross.

The financial ranges specified in the announcement are adjusted and may differ from the range specified in the remuneration regulations.

Your Day-to-Day:

• Build and evolve user-facing applications that provide sustainability insights, portfolio steering capabilities and emissions-related decision support.

• Develop backend services, APIs and integrations that enable the collection, processing and delivery of sustainability-related data.

• Collaborate closely with Product Owners, UX Engineers, Data Analysts, Data Engineers and business stakeholders to transform complex sustainability requirements into scalable digital products.

• Contribute to technical design and architectural decisions, ensuring solutions remain scalable, maintainable and aligned with long-term product goals.

• Support the evolution of the web application landscape as the platform expands across business domains and sustainability sectors.

• Implement automated testing, monitoring and continuous delivery practices to ensure high-quality software delivery.

• Improve engineering standards, reduce technical debt and continuously enhance platform reliability and maintainability.

• Work with data-intensive solutions, visualizations and business workflows that help users understand sustainability performance and climate-transition metrics.

• Mentor colleagues, share knowledge and contribute to raising the engineering maturity of the team.

• Actively challenge existing solutions and identify opportunities for continuous improvement across products, processes and technology. Who are we looking for?

• Bachelor's degree in Computer Science, Software Engineering, Information Technology, Computer Engineering or a related technical discipline (required).

• Master's degree in a related field is considered a strong advantage.

• Relevant professional certifications in software engineering, cloud technologies, DevOps or solution architecture are considered a plus.

• Extensive experience designing, developing and maintaining modern software applications.

• Strong experience across both front-end and back-end development.

• Experience building scalable web applications and distributed systems.

• Strong proficiency in Java, Kotlin or other JVM-based technologies.

• Experience with modern front-end frameworks and technologies, preferably React and TypeScript.

• Experience designing and integrating REST APIs and service-based architectures.

• Strong understanding of software engineering principles, object-oriented design, design patterns and clean code practices.

• Experience with relational databases and data-driven applications.

• Experience implementing automated testing strategies and quality assurance practices.

• Familiarity with CI/CD pipelines and modern software delivery methodologies.

• Experience working in Agile and multidisciplinary teams.

• Excellent problem-solving, communication and stakeholder-management skills.

• Ability to take ownership of complex topics from discovery through implementation and operational support.

• Demonstrated ability to mentor engineers and positively influence technical decisions. Nice to Have:

• Experience with cloud-native architectures, containerisation and Kubernetes-based platforms.

• Experience working with data-intensive products, analytics platforms or reporting solutions.

• Experience building products involving sustainability, ESG, climate or regulatory domains.

• Familiarity with Azure DevOps or similar engineering toolchains.

• Experience contributing to technical roadmaps, architecture evolution and platform strategy.

• Understanding of data engineering concepts, data pipelines and large-scale data processing.

• Experience working within large, international organisations and cross-border teams.

The role naming convention in the global ING job architecture will be “Engineer IV”.

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