Full Stack Engineer | C#/.NET & React | London

Full Stack Engineer | .NET & React | Financial Services | London

Were partnered with a leading global energy and commodities organisation thats investing heavily in its digital transformation journey.

With a strong presence across EMEA, the Americas, and APAC, the business is scaling its in-house analytics platforms to drive smarter, data-led decisions across trading, logistics, and infrastructure operations.

The role:

As a Full Stack Developer , with proven skills in . NET and React , youll join a highly collaborative analytics team in London, helping to design and deliver scalable, high-impact applications that harness data from global operations.

Youll work closely with technical and business stakeholders to translate ideas into actionable solutions that add real commercial value.

Key responsibilities:

• Develop and maintain a suite of strategic analytics applications used across global teams.
• Participate in the full software development lifecycle from design through delivery.
• Collaborate directly with end users to refine requirements and deliver high-performing features.
• Write clean, testable, and maintainable code within a distributed system architecture.
• Engage in daily scrums, peer reviews, and cross-functional design sessions.

London City, UK

Highly competitive salary + benefits package

Requirements:

• Degree in Computer Science, MIS, or related discipline.
• 47 years experience with C#/.NET technologies, ideally including ASP.NET Core and Web APIs.
• 3+ years experience developing front-end applications using React, or similar frameworks, but React is the strong preference here.
• Strong JavaScript and CSS skills with an eye for design and UX.
• Experience with SQL and relational databases such as Oracle, SQL Server, or PostgreSQL.
• Knowledge of CI/CD principles and Agile/Scrum development practices.
• Excellent communication skills and a proactive, solution-focused mindset.

Desirable extras:

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

This is an opportunity to contribute to an ambitious, data-driven organisation where your work directly influences operational and strategic outcomes across a truly global network.

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