Senior Full Stack Developer C# .NET

About the role

Sigma Suisse is recruiting on behalf of a client in the trading sector, based in Geneva, a Full Stack Senior Developer C# .NET. You will help evolve the client's analytics infrastructure, which draws on large datasets from its proprietary integrated trading platform and third-party sources. The organization is growing and needs strong candidates who can work directly with business units, from operational staff to executive leadership, to define requirements and deliver technical solutions.

Key responsibilities

• Develop analytical platforms for traders, analysts, researchers and data science teams.
• Work within an international development organization.
• Turn user insights into practical design improvements and issue resolutions.
• Write clean, well-documented, tested and scalable code that meets business objectives.
• Provide application support and user training for day-to-day operations.
• Contribute to projects such as Geographic Information Systems (GIS) implementations, data collection and distribution frameworks, and custom data-driven trading assessments.

Required profile

• At least 8 years of professional experience with C# and .NET in enterprise environments.
• Demonstrated experience in agile scrum development.
• Strong communication and relationship-building skills for stakeholder engagement.
• Proactive, user-centric approach and genuine interest in functional and technical problem solving.
• Fluent English, spoken and written.

Required skills

• C# and .NET frameworks.
• Relational databases and SQL (Oracle, SQL Server, PostgreSQL).
• Agile scrum methodology.