C# Developer - React

TalanLondonJob.bopublished 06/29/2026
Must-have:JavaScriptC#ReactQA/TestAgileCI/CDFinTech

Talan is seeking a skilled  C# Developer with REACT experience  to join our delivery teams working on  Front Office platforms within Global Markets environments . In this role, you will design, build, and enhance  regulatory, alerting, and sales enablement solutions , supporting front-office users in fast-paced trading environments. You will work at the intersection of  business and technology , delivering high-performance applications that directly impact sales and trading activities. You will contribute to the development of  front-office sales and trading tools  within a Global Markets ecosystem, supporting a range of business-critical applications. Operating in a  distributed agile environment , you will collaborate with: Front office stakeholders (sales & trading) Application support and production teams QA and testing teams Distributed delivery teams across Europe and globally This role offers exposure to  complex, real-time systems  within capital markets. Key Responsibilities Design, develop and maintain  front-office applications, components and utilities Contribute across the full  software development lifecycle  (analysis, design, development, testing, deployment, and support) Build and deliver  high-performance, scalable applications Develop  RESTful APIs and modern UI applications using React Engage directly with  business stakeholders  to understand requirements and deliver value-driven solutions Collaborate with production support teams to ensure  smooth releases and system stability Provide  third-line support  and assist with troubleshooting production incidents Contribute to  code reviews and continuous improvement initiatives

Skills & Experience (Required) Strong development experience in  C# & REACT 

Experience building  web-based applications and RESTful APIs Solid experience with  relational databases and SQL Experience with  modern JavaScript frameworks, particularly React Strong understanding of  application performance and optimisation Excellent communication skills, both written and verbal Experience working in  agile, collaborative environments Experience within  investment banking or capital markets environments Knowledge of  front office systems (FX, Rates, Credit, or derivatives) Experience with  multi-threaded or distributed systems Familiarity with  CI/CD tools (e.g. Jenkins, TeamCity) and deployment tools (e.g. Ansible) Strong analytical and problem-solving skills

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