Full Stack Developer - London Market Insurance job opportunity at G MASS Consultancy.

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Date2026-04-23T12:08:11.035Z bot
G MASS Consultancy Full Stack Developer - London Market Insurance
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loacation London, United Kingdom
loacation London....United Kingdom
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We are supporting a global speciality insurer on the hire of a Senior Full Stack Developer to join a critical technology programme focused on modernising a legacy platform while delivering new cloud-native services. This is a hands-on engineering role, working across both legacy systems and modern cloud architecture in a highly collaborative, agile environment. Key Responsibilities Maintain and enhance existing legacy applications, including refactoring where required Design, build and support backend services and API integrations Troubleshoot complex, end-to-end production issues Develop and optimise SQL / T-SQL queries and database structures Build and deploy cloud-native services across Azure and/or AWS Implement secure authentication and integration patterns (REST / SOAP) Support CI/CD pipelines and contribute to DevOps best practices Collaborate with QA, DevOps, and business stakeholders to deliver incremental improvements Strong experience with C#, .NET Core and backend service development Strong Python experience Solid understanding of Exposure Management principles Solid SQL / T-SQL skills including performance optimisation Frontend experience with JavaScript, HTML, CSS (jQuery desirable) Hands-on experience building and deploying applications in Azure or AWS Experience with serverless technologies (e.g. Azure Functions, AWS Lambda) Strong understanding of API development and integration patterns Experience troubleshooting production systems in a live environment Desirable Experience Exposure to event-driven architecture (queues, messaging systems) Familiarity with observability tools (e.g. Application Insights, Datadog) Understanding of security concepts such as OAuth2 and JWT Experience working in agile delivery environments

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