Senior Java Backend Developer (M/F)

from 3000€/gross

Job description

We are looking for an experienced Senior Java Backend Developer (M/F) for a project with our client in the banking sector. You will contribute to the development of secure, scalable, and reliable corporate banking services in a modern cloud-native environment.

You will work in a cross-functional agile team and participate in the full software development lifecycle, from solution design to implementation, testing, deployment, and operational support.

What You Will Do:

• Design, develop, and maintain Java-based backend services, REST APIs, microservices, and integration solutions.

• Analyse requirements and contribute to API design and technical decisions.

• Build secure, scalable, and maintainable applications following software engineering best practices.

• Write automated tests and participate in code reviews.

• Support deployment, monitoring, troubleshooting, and ongoing application operations.

• Collaborate with developers, architects, Product Owners, and other stakeholders.

Requirements

• Strong experience with Java, Spring, and Spring Boot, ideally complemented by knowledge of Java EE/Jakarta EE.

• Proven experience developing RESTful APIs and working with microservices and distributed systems.

• Knowledge of API-first development and OpenAPI/Swagger specifications.

• Experience with relational databases, particularly Oracle Database and/or PostgreSQL.

• Experience with Kubernetes and/or OpenShift and familiarity with CI/CD practices.

• Understanding of secure software development, clean code, software architecture, and maintainable code design.

• Experience with automated testing, monitoring, and observability.

• Ability to contribute to technical decisions and collaborate effectively in an agile environment.

Nice to Have:

• Experience in banking, financial services, or other regulated industries.

• Experience with cloud-native architectures and enterprise application development.

Benefits

• Engaging projects across diverse industries, offering continuous professional challenges and growth opportunities

• Tailor-made learning & development program, complemented by monthly in-house workshops to boost your skills

• Flexible working hours and the possibility of home office

• Modern, inspiring office environment with daily perks such as breakfast, fresh fruit, and yoga sessions

• MultiSport card to support an active lifestyle and access to a wide range of sports and wellness facilities

Company description

Who we are

Ableneo is a partner for AI and technology-driven transformation. We combine deep software engineering with business consulting to help organisations implement intelligent systems that deliver measurable results and reduce the risk of failed innovation.

What we do

• AI & Data Enabling. We deploy chatbots and LLM solutions, automate documents and workflows, and work with Computer Vision. Our focus is on solving concrete business problems with AI and achieving a high success rate in real use cases.
• Business Optimisation & Efficiency. We streamline processes, reduce delays, automate operational work, and set up more efficient ways of working.
• Product Design & Development. We design and build digital products, customer journeys, and scalable platforms that support long-term growth.
• Software Engineering. We offer flexible delivery models. From specialised roles to full teams, supporting both fast-growing companies and established enterprises.

Why join us

We have years of experience and strong references across startups, scale-ups, and large organisations. We work on assignments where AI makes real impact. For example, in the banking sector we validated an LLM solution with a high success rate in a real proof-of-concept.

At Ableneo you will work on projects that push the boundaries of AI and software engineering. You will solve complex problems, collaborate with decision-makers, and help build systems that have immediate business value.

If you want to shape the next generation of intelligent software, let’s talk.