Solution Engineer (f/m/d)

IDnow is a leader in digital identity and fraud prevention in Europe with a mission to transform trust into the most powerful asset in the digital world, empowering enterprises with AI-driven, SaaS-based identity solutions that deliver scalable security, adaptive compliance, and real-time fraud prevention . Through its broad portfolio of digital identity and fraud prevention solutions, IDnow establishes, maintains and enriches trust throughout the customer journey, ensuring businesses can confidently and securely operate while leveraging digital identity to drive growth, security and scalability. The company has offices in Germany, United Kingdom, Romania and France , and is backed by renowned institutional investors, including Corsair Capital and Seventure Partners. Its portfolio of international clients spans a wide range of end markets including financial services, telecommunications, travel & mobility, gaming, and other industries. This position is based in Rennes, France. The Solutions Engineer at IDnow is the client's trusted advisor through pre-sales and integration . You design the solution the client will rely on, you give them confidence that it will work in their environment, and you become the person they turn to for technical and solution decisions. Your focus is the technical side of the journey up to the point where the client is live on our products, and you make that path smooth . This is a hands-on, deeply technical role, and a commercial one . Solutions Engineers carry a quota and are measured on two things: the deals they help win, and whether the client goes live successfully. You work hand in hand with Sales to convince the client that our solution is the right one and to move them toward signature, and then you make sure they can use it well in production. You earn that through technical depth, but you are client-facing, credible and persuasive in a sales motion. You do this across our whole client base. We hire this role at more than one level. The core of the job is the same; the scope you own and the complexity you handle grow with your experience. This role carries real ownership across the client journey, and a say in how the work evolves. Key Responsibilities Discover and Design Lead technical discovery, qualifying conversion rates, false acceptance and rejection trade-offs, fraud exposure and integration constraints before proposing a solution, Design end-to-end solution architectures that orchestrate document verification, digital identity, fraud signals, biometric authentication, eID and EU Digital Identity Wallet flows, and e-signature, Link every technical choice to the client’s business objectives and Key Performance Indicators (KPIs), so proposals speak to outcomes rather than features, Define defensible architecture decisions covering fallback logic, data residency, scalability and performance, Support Sales with proposals, Requests for Proposal (RFPs) and Requests for Information (RFIs), advising on which capabilities to combine and why. Prove, Integrate and Go Live Lead proof-of-concept and pilot engagements, configuring Application Programming Interface (API) integrations, building Postman collections and managing sandbox environments, Validate behaviour under realistic conditions and document what the client needs to go live, Guide client developers through API and mobile Software Development Kit (SDK) integration, including webhooks, authentication and testing, Troubleshoot integration issues by reading logs and diagnosing failures at the API and SDK level, rather than only forwarding them, Maintain a living integration map of the client’s architecture, data flows and dependencies, Own the account from signature to go-live, running the go-live plan and handing a documented account to Customer Success and Support at the end of hypercare. Advise and Enable Build trusted advisor relationships with business and techn