Full Stack (.NET/React) Developer

Vitol is an energy and commodities company with revenues of $331 billion in 2024; its primary business is the trading and distribution of energy products globally – it trades over seven million barrels per day of crude oil and products and, at any time, has 250 ships transporting its cargoes.

Vitol’s clients include national oil companies, multinationals, leading industrial companies and utilities. Founded in Rotterdam in 1966, today Vitol serves clients from some 40 offices worldwide and is invested in energy assets globally including 24mM3 of storage, 850kbpd of refining capacity, and 10,000 service stations. To date, we have committed over $2.5 billion of capital to renewable projects and are identifying and developing low-carbon opportunities around the world.

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 value.  

• Pragmatic and solution-focused, balancing attention to detail with the ability to keep sight of the bigger picture.  

• Adaptable and resilient, comfortable operating in a fast-paced environment with evolving priorities.  

• User and business-focused, with a genuine interest in understanding stakeholder needs and transforming data into impactful solutions.