Full Stack (.NET/React) Developer

Are you a passionate, entrepreneurially minded senior full stack developer who wants to build the analytical systems that orchestrate global energy flows? Do you thrive in a flat hierarchy, team-oriented environment that values ideas and individual contributions? Then we are looking for you to join us at Vitol!  As a talented Senior Full Stack Developer, you will help us continue expanding our global analytics platform, fuelled by the rich data generated by our inhouse end-to-end trading system as well as external datasets. We are growing rapidly and are looking for exceptional candidates to help us deliver on our mission. This role will have the opportunity to interface directly with the business, ranging from research analysts, traders, operators to top management to drive our requirements and deliver a wide range of capabilities.  As a member of the Analytics team in Geneva, you will:  • Work with a distributed team to develop strategic set of analytics applications  • Develop AI-enabled solutions leveraging modern LLMs, Generative AI tools, and machine learning capabilities  • Contribute to React-based front-end applications that provide actionable business insights  • Partner closely with business stakeholders to understand requirements and deliver high-impact solutions  • Own projects throughout the development lifecycle, from design to deployment and support  • Build resilient, maintainable, and testable systems used globally across the organization  • Participate in architecture discussions, code reviews, and technical mentoring  • Bachelor’s or master’s degree in computer science, software engineering, or a related field  • 7+ years of professional working with C# and related .NET technologies within global enterprise solutions  • Strong React experience, including proficiency using modular JavaScript, asynchronous patterns, and DOM manipulation  • Experience operating AI models to deliver high-quality software  • Experience designing and building distributed systems and microservices  • Experience with relational databases and SQL (SQL Server, PostgreSQL, Oracle, or similar)  • Experience working in Agile/Scrum environments  • Awareness of continuous integration and continuous delivery (CI/CD) concepts and technologies  • Proactive and user-focused, with a can-do attitude and a genuine interest in the functional as well as technical aspects of each challenge encountered  • Self-motivated with the ability to prioritize, meet deadlines and manage changing priorities  • Strong verbal and written communication skills  Preferred Qualifications  • Experience integrating AI models and services into production applications  • Knowledge of LLMs, RAG architectures, AI agents, prompt engineering, or machine learning workflows  • Experience with streaming technologies: GraphQL and/or gRPC  • Experience with Reactive Extensions (Rx)  • Experience with event-driven architectures and messaging platforms such as Kafka  • Experience in analytics, commodities, energy trading, or financial markets  Soft Skills That Will Help You Stand Out   At Vitol, cultural fit is as important as technical excellence. We are looking for individuals who combine strong engineering capabilities with ownership, business curiosity, and a collaborative mindset.  • Entrepreneurial and results-driven, with a strong sense of ownership and a passion for delivering business impact.   • Curious and innovative, with a genuine interest in leveraging AI and technology to solve complex business challenges.   • Collaborative and low ego, thriving in a team-oriented environment where knowledge sharing and collective success matter.   • Excellent communicator, able to build trusted relationships and translate technical concepts into business v