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C# Developer; Full Stack - Investment Firm TWE

Job in London, Greater London, W1B, England, UK
Listing for: twentyAI
Full Time position
Listed on 2026-02-14
Job specializations:
  • IT/Tech
    Cloud Computing, Data Security
Salary/Wage Range or Industry Benchmark: 80000 - 100000 GBP Yearly GBP 80000.00 100000.00 YEAR
Job Description & How to Apply Below
Position: C# Developer (Full Stack) - Investment Firm TWE44307

A global trading organisation is seeking a skilled C# Developer (full stack) to join a high-impact team dealing with business critical projects. This an exciting opportunity to contribute to strategic solutions while being part of a broader modernisation programme into a cloud and data platform focused environment.

As the business moves away from legacy systems and invests in modern architecture, you’ll work at the intersection of stability and transformation — ensuring continuity in existing applications while helping shape the future tech landscape.

What You’ll Be Doing:
  • Develop and maintain full-stack solutions using C#, React.js and SQL.
  • Support mission-critical regulatory applications as part of a collaborative, Agile feature team.
  • Contribute to the strategic migration from legacy platforms to a cloud-based architecture using Python, Azure, and Databricks.
  • Apply best practices in Dev Ops, CI/CD, and test-driven development.
  • Participate in technical governance and architectural decision-making.
  • Collaborate with cross-functional teams to deliver high-quality, scalable software in a Kanban Agile environment.
What We’re Looking For:
  • 3–6 years’ experience as a software engineer or similar.
  • Strong skills in C#, SQL, REST APIs, and single-page web applications.
  • Hands‑on experience with Azure, Git, CI/CD, and Dev Ops tooling.
  • Exposure to or interest in Python and Databricks as part of a modern data ecosystem.
  • Familiarity with tools such as Jira, Docker, Kubernetes, Octopus, Artifactory, Oracle, and SQL Server.
  • A problem‑solver with a strong understanding of software development practices.
  • Experience working in Financial Services is a plus, but not essential.
Why Join?
  • Play a pivotal role in a cloud transformation journey using modern data and analytics platforms.
  • Gain experience with emerging technologies including Python, Azure, and Databricks.
  • Join a stable, globally recognised organisation with a strong culture of innovation.
  • Enjoy a flexible hybrid working model and inclusive, collaborative culture.
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