Java Developer (f/m/d)

About the company

We believe in the positive power of energy - and in people who are ready to shape the future with their ideas and dedication. That’s why we established the EnBW Tech Hub in Portugal to drive innovation and develop digital solutions that support the energy transition and improve the way we work.

As a key pillar of EnBW’s technological transformation, the Tech Hub plays a vital role in our journey. EnBW is one of the largest energy companies, headquartered in Karlsruhe, Germany, employing approximately 30,000 people. ENBW IT SOLUTIONS, UNIPESSOAL LDA, a wholly owned subsidiary of EnBW, operates as an integral part of EnBW's IT division. In Lisbon, we bring together experts in IT, administration, project management and HR to collaborate in an agile, international environment and create smart, scalable solutions.

Our benefits

• Private supplementary health insurance including coverage for your immediate family, offering peace of mind beyond the public system.
• Meal allowance to support your daily work routines.
• Additional paid days off (24 December & Carnival Day) on top of statutory annual leave - giving you more time for what matters.
• Hybrid working model with a mix of remote and office days to support flexibility and modern ways of working.
• Intercultural collaboration & cross border projects - grow your international experience by working with colleagues in Germany.
• Modern technology and continuous development opportunities to support your growth and keep you up to date in your field.
• Bright, appealing offices in a trendy Lisbon area, designed for productive and enjoyable workdays.

Your tasks

• Enterprise Java Development: Design, develop and maintain scalable, resilient Java applications and cloud-native services for EnBW’s Enterprise Trading platforms, taking ownership throughout the full software development lifecycle
• Integration & Data Processing: Build integrations between Endur and enterprise applications using Apache Kafka, REST APIs and messaging technologies, including workflows for publishing trade and market data in JSON format and high-performance processing frameworks
• APIs & Event-Driven Architecture: Develop RESTful APIs, microservices and event-driven applications while contributing to application architecture, technical standards and reusable engineering patterns
• Automation & Monitoring: Improve operational efficiency by automating business processes, reporting and market data ingestion, and by developing monitoring workflows that provide transparency across services and operational processes
• Modernisation & Engineering Excellence: Help modernise applications and migrate them to strategic technology platforms, simplifying architectures and continuously improving software quality, security, performance, maintainability and operational resilience
• Quality & DevOps: Deliver clean, well-tested and documented code, contribute to automated testing and CI/CD pipelines, participate in code reviews and ensure solutions meet agreed quality, security and performance standards. You also investigate production issues and implement sustainable fixes
• Agile Collaboration: Working closely with the Product Manager, Technical Lead and cross-functional teams, you translate business requirements into technical solutions, contribute to solution design and support backlog refinement, sprint planning and estimation
• International Teamwork & Knowledge Sharing: Share your expertise, mentor junior developers and collaborate across Lisbon, Germany and the UK to continuously strengthen engineering practices and ways of working

Your profile

• You bring at least 5 years of experience in enterprise Java development, ideally with Java 17+, and have strong object-oriented programming and software design skills
• Your technical expertise includes Spring Boot, Spring Framework, REST APIs, microservices, JPA/Hibernate and build tools such as Maven or Gradle
• You are confident working with Docker, Kubernetes/OpenShift, Git, CI/CD pipelines and cloud-native architectures, ideally with experience in distributed systems and DevSecOps
• Strong SQL skills, experience with PostgreSQL or Oracle, and knowledge of Kafka or comparable messaging technologies and event-driven architectures complement your development background
• You are experienced in automated testing, secure coding, debugging and production support and are comfortable working throughout the full Agile software development lifecycle
• Strong communication and stakeholder management skills help you collaborate effectively with cross-functional engineering and business teams
• Ideally, you have worked with high-volume, business-critical applications in Energy Trading, Commodities Trading or Financial Services
• Additional experience with Openlink Endur (including Report Builder, Connex integrations, valuation, market data, trade capture and settlements) as well as AI-assisted development tools such as GitHub Copilot, Cursor or Claude Code and AI integration patterns such as MCP is a plus
• You speak confidently in English; Portuguese and/or German are considered an advantage

About the department

EnBW's Enterprise Trading IT team develops and maintains the business-critical applications and services supporting energy trading. Our Lisbon engineers work as one integrated team with Product Managers, Technical Leads, Business Analysts and Architects across Portugal, Germany and the UK. We are modernising the trading application landscape through Java, cloud-native engineering, automation and AI-assisted development, with a focus on resilience, maintainability and secure delivery.

Why join EnBW?

Opportunity to develop modern Java applications supporting EnBW's Enterprise Trading business and contribute to technology modernisation, automation and AI-enabled engineering.

Contact

Are you interested? Apply online now! A cover letter is not required; we may ask a few job-specific questions in our application form.

In addition to EnBW, our recruiting team also recruits for other Group companies. If you have any questions, please contact Fahrion, Annika | [email protected].

Everyone is embraced here, irrespective of gender, age, sexual orientation, heritage, faith, beliefs, or physical ability.

Our information on data protection for applicants (f/m/d).