Senior Developer (GenAI)

We are seeking a highly skilled AI Engineer / Technical Lead to guide the technical direction of multiple applications within our engineering landscape. In this role, you will combine deep technical expertise in artificial intelligence, data engineering, and modern software development with strong leadership, communication, and collaboration skills. This is an exciting opportunity to shape the future of our AI capabilities, influence architectural decisions, and deliver high-impact solutions that support critical business functions.

WHAT WILL YOU DO

• Drive Technical Excellence
  • Lead the engineering strategy across a portfolio of applications, ensuring robust implementation of industry standards and best practices.
  • Champion architectural consistency, working closely with Architecture teams to guide design principles and influence technical direction.
  • Work directly with business stakeholders to understand requirements and ensure technical solutions deliver real business value.
  • Act as the primary technical point of contact for cross-team queries, impact assessments, and solution alignment.
• Manage Cross-Team Delivery
  • Coordinate technical dependencies across multiple applications and teams.
  • Partner with Tech Leads and Architects to ensure integrations are seamless and solutions are technically sound.
• Uphold Quality & Best Practices
  • Conduct detailed code reviews and establish processes to maintain high code quality across the team.
  • Proactively identify, prioritise, and manage technical debt within BAU delivery.
• Shape the Future
  • Contribute to the long-term development roadmap, helping define patterns, principles, and strategies that drive ongoing improvements.
  • Influence engineering culture through mentorship, leadership, and a commitment to clean, maintainable code.

WHAT WILL YOU BRING

• Extensive experience building and deploying AI solutions, including complex algorithm development and data-driven model creation.
• Strong knowledge of supervised and unsupervised learning, CNNs, RNNs, and model evaluation techniques (accuracy, precision, recall, F1 score).
• Strong Data Science & Engineering Skills
  • Proficiency in data modelling, data engineering, and exploratory data analysis.
  • Experience cleaning, processing, and transforming data to support high-quality AI model development.
• Modern Software Engineering Proficiency
  • Expertise in cloud computing, microservices, and distributed systems.
  • Strong proficiency in Python, NumPy, Pandas, ML.NET, and the wider data/ML ecosystem.
  • Hands-on experience working with large datasets using MongoDB, SQL Server, or similar databases.
  • Solid understanding of client–server architectures and server-side API development.
  • Familiarity with streaming APIs is an advantage.
• Performance & Reliability
  • Proven experience optimising Python applications for efficiency and scalability.
• Leadership & Communication
  • Self-motivated, commercially aware, and able to work independently with minimal oversight.
  • Effective in dynamic environments with shifting priorities.
  • Strong communicator, capable of explaining complex technical issues to both technical and non-technical stakeholders.
  • Experience as a Tech Lead is a plus, but those with strong potential and ambition are encouraged to apply.
• Domain Knowledge
  • Understanding of the commodities trading space is beneficial but not essential.

ABOUT US

Securing Energy for Europe – it’s a simple statement, with a bold ambition. SEFE is not just our name, but also encompasses everything that drives us. To accomplish this, we’re taking immediate action to secure gas supply – but also looking forward, to explore our role in the European energy transformation and how we can contribute to a stable and sustainable future.

SEFE, an international energy company, ensures the security of supply and drives the decarbonisation of its customers. SEFE’s 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.

Our international teams work across locations in Europe, Asia, and North America. We’re passionate about energy and the important role it can play in shaping a better future. Securing energy – now and for the future.

OUR BENEFITS

We’re committed to creating an inclusive environment that embraces diversity and fosters the development of knowledge, skills and experience. Whatever your role, you’ll find an open, welcoming atmosphere that empowers you, and recognises your contribution. We offer a competitive starting salary supported by a comprehensive, and broad reaching benefits package which includes:

• Bonus earning potential
• 25 days holiday plus bank holidays and 2 volunteering days
• Medical and dental insurance
• Range of optional flexible benefits

Based from our offices in London, you can benefit from hybrid working offering the flexibility to spend some of your working week at home. We are committed to supporting your career growth with opportunities to develop both your knowledge and experience through a blended approach to learning.