C# Developer - React

Talan Group; Greater London; On-site; GBP 60,000 - 80,000; Full time

Job summary

Talan Group is seeking a skilled C# Developer with REACT experience to join their delivery teams for Front Office platforms within Global Markets environments.

The role involves designing and building high-performance applications that impact sales and trading activities. Candidates should have a solid background in web-based applications, RESTful APIs, and agile environments.

This opportunity offers exposure to complex systems within the capital markets.

Qualifications

• Experience building web-based applications and RESTful APIs.
• Solid experience with relational databases and SQL.
• Strong understanding of application performance and optimization.
• 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 and deployment tools.
• Strong analytical and problem-solving skills.

Responsibilities

• Design, develop and maintain front-office applications.
• Contribute to the full software development lifecycle.
• Build and deliver high-performance, scalable applications.
• Develop RESTful APIs and modern UI applications using React.
• Engage with business stakeholders to understand requirements.
• Collaborate with production support teams for smooth releases.
• Provide third-line support and assist with troubleshooting.
• Contribute to code reviews and continuous improvement initiatives.

Skills

Web-based applications and RESTful APIs

Relational databases and SQL

Application performance and optimisation

Excellent communication skills

Agile collaborative environments

Investment banking or capital markets

Front office systems (FX, Rates, Credit, derivatives)

Multi-threaded or distributed systems

CI/CD tools (e.g. Jenkins, TeamCity)

Analytical and problem-solving skills

Job description

Talan is seeking a skilledC# Developer with REACT experienceto join our delivery teams working onFront Office platforms within Global Markets environments.

In this role, you will design, build, and enhanceregulatory, alerting, and sales enablement solutions, supporting front-office users in fast-paced trading environments. You will work at the intersection ofbusiness and technology, delivering high-performance applications that directly impact sales and trading activities.

You will contribute to the development offront-office sales and trading toolswithin a Global Markets ecosystem, supporting a range of business-critical applications.

Operating in adistributed 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 tocomplex, real-time systemswithin capital markets.

Key Responsibilities

• Design, develop and maintainfront-office applications, components and utilities
• Contribute across the fullsoftware development lifecycle(analysis, design, development, testing, deployment, and support)
• Build and deliverhigh-performance, scalable applications
• DevelopRESTful APIs and modern UI applications using React
• Engage directly withbusiness stakeholdersto understand requirements and deliver value-driven solutions
• Collaborate with production support teams to ensuresmooth releases and system stability
• Providethird-line supportand assist with troubleshooting production incidents
• Contribute tocode reviews and continuous improvement initiatives

Skills & Experience (Required)

• Experience buildingweb-based applications and RESTful APIs
• Solid experience withrelational databases and SQL
• Strong understanding ofapplication performance and optimisation
• Excellent communication skills, both written and verbal
• Experience working inagile, collaborative environments
• Experience withininvestment banking or capital markets environments
• Knowledge offront office systems (FX, Rates, Credit, or derivatives)
• Experience withmulti-threaded or distributed systems
• Familiarity withCI/CD tools (e.g. Jenkins, TeamCity) and deployment tools (e.g. Ansible)
• Strong analytical and problem-solving skills