(Senior) Backend Developer (f/m/d) (Java/Kotlin)

Welcome to E.ON One, part of the E.ON Group. We are driving the energy revolution with innovative digital solutions that pave the way for a sustainable future. Our mission is to empower our customers to thrive in the ever-evolving energy landscape.

E.ON One serves as a central hub where innovative solutions, whether built, bought, or developed through partnerships, are offered on a unified platform. By collaborating with our network of partners and forward-thinking scale-ups, we provide a comprehensive product portfolio designed to meet the diverse needs of our customers. Our solutions enhance energy efficiency, reduce costs, and streamline grid operations and energy management.

Our vision is to create a cleaner, smarter, and more efficient energy world. At E.ON One, we are passionate about leveraging technology and fresh ideas to drive meaningful change. We are not just keeping pace with the future; we are actively shaping it.

Are you ready to be part of something bigger? Join us on our journey and help us transform the energy industry.

We are hiring for a (Senior) Backend Developer (f/m/d) (Java/Kotlin) to work in our Engineering team.

Tasks

• Drive development of E.ON One's product platform using Kotlin and Spring, leveraging the latest cloud-native technologies.
• Collaborate closely with a diverse team of developers, product managers, and architects to design innovative software solutions that shape the future of energy.
• Develop scalable and sustainable backend services that integrate smoothly with third-party services and APIs, ensuring seamless performance
• Engage in code reviews to foster a learning environment through constructive feedback, while continuously optimizing application performance and security.

Qualifications

• 5+ years of experience in software development, with strong expertise in Java/Kotlin.

• Bonus skills in Python and Go.

• A solid foundation in modern backend development using the Spring framework and deep understanding of API technologies (JSON, REST, HTTP, OIDC, gRPC).

• Experience with SQL and NoSQL databases.

• Familiarity with AWS, Azure, or Google Cloud and cloud native services.

• A proactive approach to software security best practices.

• Enthusiasm forthe energy domain and the ambition to contribute meaningfully to the energy transition.

• Strong ownership of tasks, a collaborative spirit, and effective communication skils

• Fluency in English; German or other languages are a plus.

Benefits

• Hybrid working hours model, 30 vacation days and time off on Christmas & New Year’s day
• Competitive salary with a bonus for achieved goals
• Extensive and individual training, in form of training courses, support programs and regular workshops
• Individual induction & onboarding
• Regular internal company- and team events
• Group accident insurance, international health insurance and company pension scheme
• Business trips on German rail (>50km) in 1st class
• Depending on location: subsidized canteen and a fitness room
• Workation: Up to 20 days per year working from other EU countries and other selected countries

Bring your true self to E.ON One

At E.ON One, we see diversity as our greatest asset. Each member of our team contributes something unique, whether it’s their background, perspectives, or life experience. It’s this blend of individuality that drives our creativity and success.

We’re excited to welcome applicants from all walks of life. No matter your age, ability, ethnicity, nationality, gender, religion, sexual orientation, or social background, you have a place here. Join us and let your true self shine- because it’s your uniqueness that makes us stronger together.

For more information : E.ON One - Digitale Lösungen für die Energiewende (eon.com)
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Do you have questions?
For further information please contact David Krzoska, david.krzoska@eon.com, +49 151 72141765.

What you need to know:
Job Req ID: 229643
Contract type: Unbefristet
Working time: Vollzeit
Company: E.ON One GmbH
Location: Essen, Berlin
Function area: IT/Digitalisierung
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Inklusion

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