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Finance Systems Engineer at The Key Support Services. We are looking for an experienced Finance Systems Engineer to own and evolve our finance technology ecosystem – enhancing our use of NetSuite through advanced customisation (including SuiteScript), streamlining our financial processes across platforms like Xero, QuickBooks or Kolleno, and building robust integrations using iPaaS tools such as Celigo.. The company. The Key Group is the leading provider of support for schools and academy trusts, relied upon by over half of all schools in England. Our whole-school approach equips education leaders with trusted resources, guidance, and tools to make a real difference in the sector. We’re part of a group of mission-driven software companies focused on improving outcomes for children through technology.. The role. As our Finance Systems Engineer, you will be a key member of our cross-functional Group Systems Engineering team – ensuring our financial systems are not only robust and scalable but also tightly integrated with our broader tech ecosystem. You will help design, build, and maintain custom solutions in NetSuite, drive efficiency across other accounting tools, and lead data flows and automation through iPaaS platforms and other finance systems.. You will. . Lead NetSuite customisation using SuiteScript, workflows, custom records and integrations. . Design and implement scalable, automated integrations between financial systems using Celigo or similar iPaaS tools. . Collaborate with Finance, Product, and Engineering teams to translate business needs into technical solutions. . Evaluate and optimise processes in systems like Xero, QuickBooks, Kolleno and Salesforce. . Troubleshoot, test, and resolve data and systems issues with accuracy and attention to detail. . The ideal person. . 4+ years of experience in financial systems engineering or ERP customisation. . Deep NetSuite experience, including SuiteScript (1.0/2.0), workflows and saved searches. . Strong experience with at least one other financial system (Xero, QuickBooks, Kolleno etc.). . Demonstrated success implementing integrations with iPaaS tools like Celigo, Boomi or Mulesoft. . Excellent analytical and stakeholder engagement skills – you’re as comfortable with data as you are with people. . Able to independently lead projects while contributing to the wider business and tech strategy. . Nice to have. . Familiarity with APIs and scripting outside of NetSuite (e.g. JavaScript or Python). . Experience supporting subscription or SaaS-based revenue models. . Knowledge of financial reporting or FP&A tools. . Experience working in a scaling SaaS or ed-tech business. . Experience developing in Salesforce. . Company Location: United Kingdom.