Backend developer Jobs in Hanau

Salary : 65.000 - 80.000 per year

Requirements :

• Degree in economics, information systems or equivalent qualification
• Long-standing practical experience in backend development, ideally in financial services or with large-scale platforms
• Proven skills in Java (17 or higher, ideally 21+), Spring Boot, Oracle databases, SQL, and API management
• Strong fundamentals in software development, OOP, design patterns, concurrency, and TDD as well as a deep understanding of microservice architectures and distributed systems
• Experience with CI / CD pipelines and tools (Azure DevOps), test automation (JUnit, Mockito), and Git
• Ability to lead technical initiatives and mentor others
• Skills in IT risk management, secure development practices, Containerisation (OpenShift), orchestration, and Kafka as well as with monitoring tools (Grafana, Kibana); cloud technologies and agile frameworks are a bonus
• Excellent problem-solving, communicative and stakeholder management skills
• Strong agile and collaborative mindset as well as the ability to lead technical initiatives and mentor others
• A passion for innovation and a feel for sustainable solutions
• Fluency in English, knowledge of German is a plus

Responsibilities :

Our backend systems are the backbone of ING's Daily Banking platform and this is where you come in. Youll design, develop, and maintain reliable backend applications and services using modern frameworks like Spring Boot, Java and Kotlin, providing the power our systems need.

With an eye for details, you contribute substantially to architectural decisions which ensure that our solutions are modular, scalable, and highly available as well as rock-solid and future-proof.

Diligently, you build and run RESTful APIs end to end, from database and messaging integration to SDKs and service-discovery tools that teams across ING can plug into effortlessly.

To keep our systems fast, stable, and compliant, you'll write automated tests, monitor and optimise applications using tools like Grafana and Kibana, and ensure resilience as well as high code quality. Throughout the whole development lifecycle, best practices in security and compliance are your bread-and-butter.

In addition, you'll set up and maintain CI / CD pipelines, automate processes where you can and embrace modern tech from cloud-native solutions to containerisation.

Youre a natural at keeping an agile and DevOps mindset with which you actively participate in ceremonies and help us drive continuous improvement.

All the while, you keep communication smoothly running whether with external stakeholders or Product Owners in your team and take your responsibilities one step further by providing mentorship and contributing to technical interviews.

Technologies :

API

Architect

Azure

Backbone

Backend

CI / CD

Cloud

DevOps

Git

Grafana

JUnit

Java

Kafka

Kibana

Kotlin

Mobile

OOP

OpenShift

Oracle

SQL

Security

Spring

Spring Boot

TDD

More :

Behind every reliable business banking product is powerful technology and you're the one who builds, runs and improves it. Is Java your native tongue and do you navigate Spring Boot, Oracle, Junit and Mockito with ease? Perfect! At ING, our purpose is to empower people to stay a step ahead in life and business. We believe progress is driven by people with imagination and determination to create a better future. ING Germany is part of a global organisation that is transforming banking through technology, innovation, and a culture of collaboration. Sounds good? Then apply now with your CV and join us in our IT Area Daily Banking & Savings as the architect behind easy, secure, and scalable solutions for our customers.

We offer many benefits

Company pension plan, capital-building offers, free Deutschlandticket & bicycle leasING, company restaurant

Hybrid working : In addition to working in the office, you can also work remotely within operational, regulatory and legal requirements.

Individualized work schedule models, sabbatical, subsidization of nursing & childcare costs

Personal budget for continuing education and development as well as health; plus, a personal budget to set up your mobile working space

Ready for a new job?

At ING we are colourful and diverse : different personalities with different perspectives - an international culture where we value and appreciate each other. We believe in substance over style, people instead of labels.

This describes you to a T?

Simply apply online your resume is all we need to get to know you, a cover letter is optional!

last updated 5 week of 2026