Software Developer – Clearing Technology

Company: Rex Technologies GmbH
Apply for the Software Developer – Clearing Technology
Location: London
Job Description:

Position Reference

VN2844

Role Summary

As a Senior Front End Developer with full stack capability, you will be a pivotal member of our Software Development team in Clearing Technology, driving an AI‑first approach to the creation and enhancement of secure, responsive web‑based platforms.

Responsibilities

  • Design, develop, test, and maintain front‑end applications using React and TypeScript.
  • Collaborate with back‑end engineers to integrate C# .NET or Node.js services.
  • Implement responsive, accessible user interfaces and ensure cross‑browser compatibility.
  • Leverage AI‑assisted development tools to accelerate delivery and improve code quality.
  • Apply best practices in testing, traceability, auditability, and deterministic system behavior.
  • Participate in DevOps practices, including CI/CD pipelines and cloud deployment on AWS.
  • Contribute to architecture and design decisions to achieve scalable, well‑governed solutions.

Required Qualifications and Skills

  • Strong experience with React, JavaScript, and TypeScript.
  • Experience building responsive, accessible web applications.
  • Working knowledge of at least one server‑side technology (C# .NET preferred or Node.js).
  • Proficiency with AI‑assisted development tools (e.g., code generation, automated testing).
  • Strong understanding of applying AI responsibly in the software development lifecycle.
  • Experience with NoSQL or relational databases.
  • Modern CI/CD and DevOps practices.
  • Cloud technology experience, ideally AWS.
  • Knowledge of BDD/TDD and Agile/scrum methodologies.
  • Excellent verbal and written communication skills.

Desirable Skills

  • Deeper back‑end experience with C# .NET (Web API, Entity Framework) or Node.js.
  • Infrastructure as Code (Terraform or equivalent).
  • Understanding of financial products across derivatives, FX, commodities, and cash equities.
  • Knowledge of the post‑trade lifecycle, including settlement and collateral management.
  • Experience embedding AI capabilities into end‑user applications.
  • Familiarity with SOLID and Domain‑Driven Design principles.
  • Experience working in a regulated environment within the financial markets.

Regulatory and Compliance Responsibilities

  • Ensure compliance with FCA, NFA, AMF, AFM, MAS regulations and internal codes of conduct.
  • Adhere to the operational risk framework and report any breaches to Compliance.
  • Escalate risk events promptly and provide input to risk management processes.

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Posted: June 24th, 2026