Java Developer (m/w/d) Fokus Spring Boot | Kafka | Kubernetes | DevOps

Leistungsbeschreibung

The PTT (Portfolio & Trade lifecycle Technologies) team is looking for a Senior Java Software Developers to join as external consultant our fast-paced, innovative-driven team as consultants supporting cutting-edge projects in the energy trading sector. We are offering a hybrid working environment - predominantly remote, with collaborative onsite sessions around two days per month.

Anforderungen

Functional changes in EM UK information flow required for Market Dynamics:

• EMDP footprint enhanced by introduction of Portal for applying hedge path, calculating VWAP HOP, and calculating Transfer Price
• New component introduced for portfolio and position management (Evolio), reducing Allegro Horizon footprint as well as replacing HPT and HEX
• Exxeta/Trayport, order entry for RPM changed, RPM to GPM will go through Evolio, and RPM – T&O will require manual entry into Exxeta
• Decommissioning of legacy applications including TRMTracker, SQT, CLAP

Key Responsibilities:

• Design, develop, and maintain scalable Java applications for energy trading solutions.
• Work primarily with Spring Boot, Project Reactor, and Apache Kafka to build robust, event-driven systems.
• Collaborate closely with cross-functional teams to define, design, and ship new features.
• Write clean, efficient, and testable code, following industry best practices.
• Participate in code reviews and contribute to continuous improvement of our development processes.
• Stay up to date with emerging trends and technologies, share knowledge within the team

Requirements:

• Proven experience (5+ years) as a Java developer in a professional environment
• Strong expertise in Spring Boot and knowledge of developing RESTful APIs
• Experience with Time Series data, especially with time zone handling and DST
• Hands-on experience with messaging systems, especially Apache Kafka
• Familiarity with reactive programming (ideally with Project Reactor)
• Experience in building and maintaining production-grade, distributed systems
• Excellent problem-solving skills, with a proactive and self-driven approach
• Effective communicator in English; German is a plus
• Willingness and ability to join onsite meetings in Essen, Germany once per month

Preferred Qualifications:

• Experience in energy trading or financial trading industries
• Knowledge of cloud technologies and deployments (e.g., AWS, Azure, Kubernetes)
• Background with CI/CD pipelines and DevOps practices
• Exposure to microservices architecture and containerization (Docker)
• Bachelor’s or master’s degree in computer science, Engineering, or a related field
• Openness to explore and pilot new tools and frameworks

Über den Auftraggeber

Start: 20.10.2025

Ende: 31.12.2025

Auslastung: 40 h/week

Onsite Stunden: 75

Offsite Stunden: 450

Vertragsart: Contracting

Standort: Hybrid (Remote & Onsite in Essen, Germany, ~2 days/month | only for Onshore and Nearshore, for Offshore only Offsite)