Senior Full Stack Dev for FinTech Platform Modernisation

Insight Global; Greater London; Hybrid; GBP 60,000 - 80,000; Full time

Job summary

Insight Global are seeking a Senior Full Stack Developer to join a leading global financial markets organisation, supporting a Frontier AI Cyber Remediation team focused on modernising and enhancing business-critical index management platforms. Three days on-site in London, UK, for a six-month initial contract through March 2027, Inside IR35.

The role covers designing, developing, and enhancing applications across backend services, APIs, databases, and modern UIs.

Qualifications

• Strong hands-on development experience with C# and .NET.
• Frontend development experience with Angular.
• Experience building and supporting APIs and backend services.
• Develop enterprise web apps across frontend and backend.
• Working knowledge of Microsoft SQL Server and T-SQL.
• Investigate and resolve complex app, data, and business issues independently.
• Experience supporting platform migration or modernisation initiatives.
• Experience leveraging AI tools within the software development lifecycle.
• Strong communication, stakeholder management, and problem-solving skills.

Responsibilities

• Design, develop, and enhance applications supporting migration and management of critical financial data platforms.
• Work across backend services, APIs, databases, and modern user interfaces.
• Collaborate with product teams, business stakeholders, and engineers to deliver scalable, secure solutions.
• Play a key role in platform modernisation initiatives and improve performance and quality.

Skills

C#

.NET

Angular

API development

SQL Server

T-SQL

Microservices

RESTful APIs

CI/CD

Terraform

Tools

AWS

Terraform

Job description

Insight Global are seeking a Senior Full Stack Developer to join a leading global financial markets organisation, supporting a Frontier AI Cyber Remediation team focused on modernising and enhancing business-critical index management platforms. Three days on-site in London, UK, for a six-month initial contract through March 2027, Inside IR35.

The role covers designing, developing, and enhancing applications across backend services, APIs, databases, and modern UIs.