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Integrations Engineer (C#) at Oak Engage. Location: Hybrid, Newcastle or Remote (UK Based). Reports to: Head of Engineering. Type: Full-time. Join Oak Engage – Where Communication Meets Connection. At Oak Engage, we’re on an exciting growth journey—backed by a major investment from NorthEdge to scale our impact and redefine the future of employee engagement. Trusted by some of the UK’s biggest brands, including Aldi, Five Guys, and ITV, we help organisations connect, engage, and empower their people through smarter, more personalised internal communication. With our next stage of expansion underway, we’re building a team of bold, ambitious thinkers ready to make their mark at a high-growth, purpose-driven SaaS company. If you’re looking to shape the future of work and grow alongside a company that’s going places, now’s the time to join Oak.. About the Role. We’re looking for a skilled Integrations Engineer (C#) to build and maintain the external integrations that power Oak’s platform. You’ll be working on everything from HRIS and identity integrations to bespoke APIs and third-party system connectors—helping our customers connect Oak seamlessly into their existing tech stack.. This is a hands-on role ideal for someone who enjoys working with APIs, data mapping, authentication flows, and solving real-world integration challenges in enterprise environments.. What You’ll Do. . Develop and maintain secure, scalable integrations between Oak and third-party systems (e.g. Azure AD, Workday, SAP, custom APIs). . Collaborate with customer success and implementation teams to support integration requirements. . Own authentication flows (OAuth2, SAML, etc.) and integration-specific APIs. . Maintain integration documentation and configuration guides. . Troubleshoot and resolve integration issues across customer environments. . Build reusable components and tools to streamline future integrations. . . What We’re Looking For. . 3–5+ years of experience with C# and .NET (preferably .NET Core/.NET 6+). . Strong experience working with APIs, webhooks, and authentication protocols (OAuth, SAML). . Knowledge of enterprise integration patterns and secure data handling. . Experience with Azure services and identity providers a strong plus. . Great problem-solving and communication skills, especially in customer-facing scenarios. . Company Location: United Kingdom.