Senior Java Developer (f/m/d)

EnBW IT-Solutions; Lisboa; Hybrid; EUR 80,000 - 110,000; Full time

Benefits offered by this job

Health insurance

Meal allowance

Extra days off

Hybrid work

International collaboration

Professional development

Modern offices

Job summary

EnBW IT-Solutions in Lisbon seeks an experienced Senior Java Developer to design and implement scalable Java applications, REST APIs and microservices for energy trading platforms.

You will collaborate with cross‑functional teams across Lisbon, Germany and the UK, leveraging AWS, Docker, Kubernetes and modern CI/CD pipelines to deliver cloud‑native solutions.

Qualifications

• 5+ years of enterprise Java development
• Experience with Java 17+ and Spring Boot
• Knowledge of microservices architecture
• Energy or commodities trading tech is a plus
• Experience with exchange APIs (EPEX SPOT, Nord Pool) is a plus

Responsibilities

• Design, develop and maintain scalable Java applications, REST APIs and microservices
• Integrate with European energy exchanges and trading platforms
• Build events-driven integrations using Kafka and REST
• Develop cloud-native applications and CI/CD pipelines
• Monitor performance and ensure operational resilience in trading services
• Contribute to automated tests and secure software development practices
• Collaborate with Product, Tech Leads and Analysts across Lisbon, Germany and the UK

Skills

Java 17+

Spring Boot

Microservices

OO programming

Energy/Trading tech

Tools

AWS

PostgreSQL

Aurora

Oracle

Docker

Kubernetes

CI/CD

Job description

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.

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

• Java Development: Design, develop and maintain scalable Java applications, REST APIs and microservices supporting Energy Trading operations
• Exchange Integration: Develop and maintain connectivity with European energy exchanges, particularly EPEX SPOT and Nord Pool, supporting order submission, trade capture, market data and auction processes
• Trading Systems Integration: Build event-driven integrations between exchange platforms, Endur and other enterprise applications using Kafka, REST APIs and messaging technologies
• Cloud & Modernisation: Develop resilient cloud-native applications, automate trading workflows and contribute to application modernisation and architectural improvements
• Operational Resilience: Monitor application performance using Datadog, troubleshoot production issues and ensure reliable operation of tim‑critical trading services
• Engineering Excellence: Develop automated tests, contribute to CI/CD pipelines, participate in code reviews and maintain high standards of software quality and security
• Collaboration & Delivery: Work with Product Managers, Technical Leads, Business Analysts and Trading stakeholders across Lisbon, Germany and the UK throughout the Agile software development lifecycle

Your profile

• You bring at least 5 years of experience in enterprise Java development, ideally with Java 17+, Spring Boot and microservices, combined with a strong understanding of object-oriented programming
• Your background includes Energy or Commodities Trading technology, with knowledge of European Power and Gas markets, including Day-Ahead and Intraday trading
• Hands‑on experience with EPEX SPOT and Nord Pool enables you to work confidently with exchange APIs, order lifecycles and trade execution
• You are experienced in building integrations using REST APIs, Kafka and event‑driven architectures, including integrations with ETRM or other trading systems
• Your technical expertise covers AWS, relational databases such as PostgreSQL, Aurora or Oracle, as well as Docker, Kubernetes and CI/CD tools
• Automated testing, secure software development and production support are an integral part of the way you develop reliable applications
• Strong analytical, troubleshooting and communication skills round off your profile, along with experience working in Agile and international teams
• You speak confidently in English; Portuguese and/or German are considered an advantage

About The Department

EnBW's Trading IT team develops and supports business‑critical applications and platforms that enable energy trading across European markets.

As part of our growing Lisbon Trading IT capability, you will work alongside engineering and business teams across Portugal, Germany and the UK, developing modern Java applications and integrations with European energy exchanges.

You will contribute to the modernisation of our trading technology landscape through cloud‑native development, automation, AI‑assisted engineering and resilient software solutions.

Why join EnBW?

Help shape EnBW’s growing Trading IT capability in Lisbon, working on business‑critical European energy exchange platforms while contributing to cloud modernisation, automation and the transformation of our trading technology landscape.

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).