Senior Software Developer

At METLEN Energy & Metals, we are catalysts for a sustainable future, positioned at the forefront of the energy transition while being a reference point for competitive green metallurgy at both the European and global levels.  We are a global industrial and energy company operating across two highly interconnected and complementary sectors: Energy and Metals. With a consolidated turnover of €5,683 million and an EBITDA of €1,080 million, along with a workforce of over 7,627 dedicated individuals, we drive success through cutting-edge technology and diverse talent.

We are committed to embracing new state-of-the-art technologies and advancements, propelling us towards a cleaner, brighter tomorrow. Our positive footprint extends across five continents, creating a lasting impact. At METLEN, we foster a culture of resilience, challenge, respect, excellence, and change, empowering our diverse workforce to achieve remarkable outcomes.

We are currently looking for a Senior Software Developer to join our International Energy Supply & Trading division in Zug, Switzerland.

By joining this role you'll play a key role in designing, developing, and maintaining business-critical applications used for quantitative analysis, market data management, and trading decision support energy trading activities.

Your role will encompass:

• Developing and maintaining end-to-end software solutions across backend services, frontend applications, and data pipelines.


• Building and enhancing backend applications using Rust and Python, ensuring high performance, reliability, and scalability.


• Developing intuitive user interfaces using React and JavaScript to support valuation, risk monitoring, and business dashboards.


• Supporting the integration and maintenance of quantitative models, ensuring robust testing, seamless deployment, and reliable performance.


• Designing, maintaining, and optimizing automated market data ingestion pipelines while ensuring data quality and integrity.


• Managing application deployments and supporting containerized environments using Docker and Linux.


• Collaborating closely with quantitative analysts, traders, and cross-functional teams to translate business requirements into technical solutions.


• Continuously improving application performance, code quality, and system architecture through pragmatic and scalable software engineering practices.

What you bring to the role:

• Proven experience in full-stack software development, with strong proficiency in Rust and/or Python, and willingness to work across both technologies.


• Hands-on experience developing modern frontend applications using React and JavaScript.


• Solid understanding of relational databases, SQL development, and database schema design.


• Experience working with Docker, Linux environments, and containerized application deployments.


• Strong problem-solving skills with the ability to work independently and take ownership of technical solutions from development through production.


• A pragmatic approach to software development, focusing on delivering high-quality, maintainable solutions.


• Experience within energy trading, commodity trading, or financial markets will be considered an asset.

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At Metlen Energy & Metals we are proud to have Diversity and Inclusion at the centre of everything we do. We are committed to Equal Employment Opportunity regardless of race, colour, national origin, ethnicity, gender, age, disability, sexual orientation, gender identity or religion.