Senior Full Stack Software Engineer

Senior Software Engineer (Full Stack) | Global Trading Firm | Switzerland

We’re partnered with a leading global energy and commodities firm undergoing a major digital transformation, scaling its in‑house analytics platforms across trading, logistics, and infrastructure.

The Role

We’re looking for a true Senior Full Stack Engineer who is equally strong in .NET and modern React.

This is not a backend role with light UI exposure, you will be hands‑on in React daily, building high‑quality front‑end interfaces backed by robust .NET microservices.

You’ll join a collaborative Geneva‑based team delivering highly scalable applications that support global trading operations.

Key Responsibilities

• Build and maintain strategic analytics applications used by global trading and operations teams.
• Contribute across the full SDLC - design, development, testing, and deployment.
• Work directly with end users to translate requirements into performant UI and API features.
• Deliver clean, maintainable code across both the React front‑end and .NET back‑end.

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• Participate in daily scrums, peer reviews, and architecture/design sessions.

Location & Package

📍 Geneva, Switzerland, Hybrid Working

🌍 UK/EU relocation supported (option to start in London first if you're UK-based)

💼 Highly competitive salary + benefits

Requirements:

• Degree in Computer Science, MIS, or similar.
• 4–8 years’ experience with C#/.NET, including ASP.NET Core & Web APIs.
• 2+ years of hands‑on, production React experience (not Angular/Vue; React is required).
• Candidates without recent commercial React experience will not be considered.

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• Strong JavaScript & modern front‑end skills (React hooks, state mgmt, UI patterns, CSS).
• Experience with SQL databases (Oracle, SQL Server, PostgreSQL).
• Familiarity with CI/CD and Agile/Scrum.
• Strong communication skills and a proactive mindset.

Nice to Have

• Experience with GraphQL, gRPC, Kafka, or Reactive Extensions (RX).
• Exposure to energy, commodities, or financial markets.

This is a chance to join a global, data‑driven trading organisation where your engineering work will directly shape decision‑making across markets; all while living in one of Europe’s leading financial hubs.

📧 If you are interested in this Senior Stack Developer role, please respond directly to this advert with your updated CV or send it to chantelle.smith@sourcegroupinternational.com