Senior Salesforce Test Engineer

Location: Remote (occasional travel to Swindon) Contract: Until 30 September 2026 IR35: Inside Clearance: BPSS required Rate: Up to £550 per day (Umbrella) About the Role We are seeking an experienced Senior Salesforce Test Engineer to support a major public sector digital programme. You will play a key role in ensuring the quality and reliability of enterprise Salesforce solutions across complex integrated systems, contributing across the full software delivery lifecycle. Key Responsibilities * Functional, integration, exploratory, and non-functional testing * Test automation using Playwright and BDD (Cucumber) * API testing using Postman or Rest Assured * Collaboration with Salesforce developers on unit test coverage * Supporting UAT with business analysts * Managing defects through to resolution * Maintaining and improving regression test suites * Supporting release and DevOps processes * Mentoring junior testers * Stakeholder reporting and demos Essential Skills & Experience * Strong Salesforce (SFDC) platform experience * Salesforce functional & integration testing * Salesforce Admin 201 or equivalent experience * Playwright automation experience * BDD frameworks (Cucumber) * API testing tools (Postman / Rest Assured) * JavaScript or Java scripting (read/write ability) * Experience testing React-based applications * Agile delivery experience * CI/CD and DevOps understanding Desirable Experience * ISTQB or Agile Tester certification * ITIL Foundation * Apex (basic scripting/reading) * Loans & Investment application experience * Conga templates * FinDock & GoCardless integrations * Experience delivering digital transformation programmes About You You are a senior test engineer with strong Salesforce expertise and a passion for automation and quality engineering. You are confident working across technical and business teams, mentoring others, and improving testing practices in Agile and DevOps environments