Company description: SEFE, an international energy company, ensures the security of supply and drives the decarbonisation of its customers. SEFEs activities span the energy value chain, from origination and trading to sales, transport and storage. Through its decades-long expertise in trading and the development of its LNG business, SEFE has become one of the most important suppliers to industrial customers in Europe, with an annual sales volume of 200 TWh of gas and power. Its 50,000 customers range from small businesses to municipalities and multinational organisations. By investing in clean energies and especially in the hydrogen ecosystem, SEFE is contributing to the energy transition. The company employs around 2,000 people globally and is owned by the Federal Government of Germany. Securing energy now and for the future. Job description: Application Development: Design, develop, and maintain in-house applications for the Derivatives trading desk using Python, ensuring efficient, scalable, and reliable solutions Testing and Quality Assurance: Implement automated testing using PyTest and ensure code quality through peer reviews Data Management: Efficiently handle data using NumPy and Pandas, performing data processing, analysis, and manipulation Deployment and Maintenance: Manage continuous integration and deployment of applications, ensuring stability in production environments Version Control: Utilise Git-based version control for code management, ensuring a clear and collaborative development workflow Collaboration: Work closely with team members and business stakeholders to deliver solutions that meet user needs Issue Resolution: Provide second-line support for in-house applications, diagnosing and resolving technical issues quickly Continuous Improvement: Contribute to the evolution of development practices and tooling within the team, ensuring best practices are followed Profile description: Degree in Computer Science, Engineering, or related field, or equivalent professional experience (advantageous but not mandatory) Professional certifications in relevant skill areas (advantageous) Proficiency in Python (3.10) Working knowledge of JavaScript/TypeScript and SQL databases Experience with NumPy and Pandas Proficiency in Git-based branching workflows Hands-on experience with PyTest Familiarity with continuous integration, iterative delivery, design, development, and support of applications Experience with MongoDB, SQL Server, or other relational databases Domain knowledge in commodities trading Front Office experience Knowledge of Behavior-Driven Development (BDD) frameworks Experience with Microsoft Azure Familiarity with FastAPI, RabbitMQ, and Dramatiq Exposure to modern frontend frameworks (React, Vue, Angular) We offer: In return we offer a competitive starting salary supported by a comprehensive range of financial, lifestyle and wellness benefits with the flexibility to follow a hybrid working model. bonus earning potential non-contributory pension with 10% employer contribution 25 days holiday plus bank holidays and volunteering days buy / sell holidays life assurance medical and dental insurance (family cover) range of optional flexible benefits We are committed to supporting your career growth with opportunities to develop both your knowledge and experience through a blended approach to learning. Join SEFE and help us secure energy supply across Europe and shape a better, more sustainable tomorrow.