> Markdown version of [/jobs/ext/1589880-solution-architect-12-months-inside-ir35-625-per-day](https://www.wearedevelopers.com/jobs/ext/1589880-solution-architect-12-months-inside-ir35-625-per-day). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Solution Architect - 12 months - INSIDE IR35 - £625 per day - **Company:** Harvey Nash - **Location:** London, UK - **Salary:** £162,500.0 - £169,000.0 - **Contract:** Temporary contract - **Skills:** Application Programming Interfaces (APIs), Data Analysis, Software as a Service, Data Synchronization, Database Connection, Oracle (Applications), Queueing Systems, Extensible Markup Language (XML), Data Management, Api Design, Legacy Systems - **Published:** July 2, 2026 - **Apply:** https://www.careerboard.com/pt/en/find-jobs-in-United-Kingdom/-1ACFE64DB72D93C023/ ## About the Role I am working with a client who are seeking an experience Solution Architect with strong background in leading the architectural design for the replacement of Legacy systems. ## Description "As-Is" Architecture Baseline: Work closely with the existing technical experts to decode and document the complex, often undocumented "As-Is" state, including direct database connections, Legacy XML feeds, and custom point-to-point scripts.. Target State Design: Provide the strategic oversight for the design of the comprehensive "To-Be" architecture mapping to the 7 core functional modules (Commissioning, Identity, Rights/Contracts, Financial Processing, Sales/Licensing, Analytics, and Integration Layer).. Integration Strategy & API Design: Architect a modern integration layer to provide secure, scalable API flows and message queues to connect the platform with the existing editorial production systems, corporate systems and external SaaS applications.. Transition & De-risking Strategy: Develop a phased migration roadmap that allows the business to transition functionality out of the Legacy application safely.. Data Modeling & Master Data Management: Establish clear data ownership boundaries (eg, distinguishing between contact data owned by the rights system vs. financial data owned by Oracle AR/AP) to resolve current data synchronization and identity resolution issues. ## Related Videos - [Why make use of an integration platform in today's software developments and infrastructure?](https://www.wearedevelopers.com/videos/758-why-make-use-of-an-integration-platform-in-today-s-software-developments-and-infrastructure) - [API Design - Getting Started](https://www.wearedevelopers.com/videos/33-api-design-getting-started) - [Data Science in Retail](https://www.wearedevelopers.com/videos/586-data-science-in-retail) - [How to TDD in legacy code](https://www.wearedevelopers.com/videos/309-how-to-tdd-in-legacy-code) - [Data Science on Software Data](https://www.wearedevelopers.com/videos/162-data-science-on-software-data) - [Rest API Antipatterns](https://www.wearedevelopers.com/videos/100208-rest-api-antipatterns) ## Related Articles - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [The 12 Best Jobs for Software Engineers](https://www.wearedevelopers.com/magazine/401-the-12-best-jobs-for-software-engineers) - [Best Companies to work for in London: Top 25 Companies in 2023](https://www.wearedevelopers.com/magazine/187-best-companies-to-work-for-in-london-top-25-companies-in-2023) - [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk) - [Software Engineer Salary in The UK](https://www.wearedevelopers.com/magazine/231-software-engineer-salary-in-the-uk) - [Data Analyst Salary in the UK](https://www.wearedevelopers.com/magazine/278-data-analyst-salary-in-the-uk)