Full Stack Developer With Java

at ING

📍 Katowice, Poland

PLN 180,000-264,000 per year

SENIOR

✅ On-site

✅ Visa Sponsorship

Tech Stack
Tag name is followed by "@" symbol and proficiency level value. About proficiency levels:

1-2 — basic awareness. Minimal hands-on experience, and a rudimentary understanding of the technology's purpose;

3-6 — daily use. Comfortable and regular usage, capable of handling common tasks and challenges related to the technology;

7-9 — you are an expert, you can teach others, you know all the pitfalls and tricks;

10 — exceptional knowledge, comprehensive understanding, and adeptness in all aspects of the technology, including advanced problem-solving. Think twice before claiming or demanding such level.

API @ 4 Agile @ 4 Automated Testing @ 4 Azure @ 3 Azure DevOps @ 3 CI/CD @ 3 Communication @ 6 Data Engineering @ 4 Data Pipelines @ 4 Design Patterns @ 7 DevOps @ 3 Distributed Systems @ 4 JVM @ 7 Java @ 7 Kotlin @ 7 Kubernetes @ 4 React @ 4 Reporting @ 4 TypeScript @ 4

Details

ING Hubs Poland is hiring for a full-stack development role focused on building digital products that provide sustainability insights, portfolio steering capabilities, and emissions-related decision support.

Responsibilities

Build and evolve user-facing applications for sustainability insights, portfolio steering, and emissions-related decision support.
Develop backend services, REST APIs, and integrations for collecting, processing, and delivering sustainability-related data.
Collaborate with Product Owners, UX Engineers, Data Analysts, Data Engineers, and business stakeholders to transform complex requirements into scalable digital products.
Contribute to technical design and architectural decisions, ensuring solutions are scalable, maintainable, and aligned with long-term product goals.
Support the evolution of the web application landscape across business domains and sustainability sectors.
Implement automated testing, monitoring, and continuous delivery practices.
Improve engineering standards, reduce technical debt, and enhance platform reliability and maintainability.
Work with data-intensive solutions, visualizations, and business workflows related to sustainability performance and climate-transition metrics.
Mentor colleagues, share knowledge, and contribute to the engineering maturity of the team.
Challenge existing solutions and identify opportunities for continuous improvement across products, processes, and technology.

Requirements

Bachelor's degree in Computer Science, Software Engineering, Information Technology, Computer Engineering, or a related technical discipline.
A Master's degree in a related field is an advantage.
Relevant certifications in software engineering, cloud technologies, DevOps, or solution architecture are a plus.
Extensive experience designing, developing, and maintaining modern software applications.
Strong experience in 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 expected salary for this position is PLN 15,000–22,000 gross per month. The financial ranges specified in the announcement are adjusted and may differ from the range specified in the remuneration regulations.

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