Javascript Developer (Remote) in London

We are currently recruiting an exciting opportunity to join the IT team as an Integration Developer. Reporting to the IT Development Manager this role will act as the technical bridge between our robust, internal developed core systems and modern cloud based SaaS platforms. Working with the Development, Engineering and Project teams your primary focus will be to define API driven integrations and utilise Microsoft middleware to create seamless, event driven data flows across the business. Your main area of responsibility will be to design, build, and orchestrate secure API integrations and complex data flows across disparate systems. You will manage the extraction, transformation, and routing of data working with multiple integration protocols such as REST and GraphQL to ensure reliable and efficient communication. You will be responsible for engineering and maintaining Microsoft-centric middleware solutions using the Azure integration stack, including API Management, Logic Apps, and Azure Functions. You will also create and maintain clear, comprehensive technical documentation covering APIs, middleware processes, and end-to-end system integrations, enabling maintainability, transparency, and effective knowledge sharing across technical teams. You will have a strong educational foundation in computer science, software engineering, or a closely related discipline, supported by deep technical expertise in Azure Integration Services. You will demonstrate comprehensive knowledge of API consumption patterns, integration architectures, and data mapping and transformation techniques, alongside a solid grasp of modern authentication and authorisation protocols used in secure SaaS-to-SaaS and system-to-system communication. The role requires proven commercial experience orchestrating API connections and designing or developing middleware to integrate complex enterprise SaaS platforms. You will have an excellent track record of translating complex business and project requirements into scalable, secure, and maintainable technical integration solutions, remaining highly focused on delivery and task-oriented execution. Experience with the Microsoft Power Platform ecosystem, including tools such as Power Automate, Power Apps, or related services, would be highly desirable. Broader application development experience across a range of technologies, including PHP or other web languages, is also beneficial. Relevant Microsoft certifications, such as Azure Developer Associate or Azure Solutions Architect Expert, are advantageous and will be viewed as a strong indicator of technical depth and commitment to ongoing professional development. Transact is a leading UK investment wrap platform for financial advisers and their clients. Our platform enables clients and their advisers to manage their financial portfolio in one single online place, and is supported by unrivalled personal service. We provide custody, tax wrapping, trading and reporting. We make financial planning easier for advisers by delivering great service. Our platform helps advisers grow revenues and reduce risk and cost in their business. We do the right thing for customers, advisers, staff, shareholders, suppliers and the wider community. Transact's parent company, IntegraFin Holdings plc, is listed on the London Stock Exchange and is a constituent of the FTSE 250 index. We are an equal opportunities employer and positively encourage applications from suitably qualified and eligible candidates regardless of age, disability, gender reassignment, marital or civil partner status, pregnancy or maternity, race, religion or belief, sex or sexual orientation.