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Checkout.com is a global fintech platform powering over 10 billion transactions yearly for companies like eBay, Spotify, Klarna, Uber, and Sony. We're seeking a Senior Sales Engineer to join our Barcelona office and support our expansion across the EEA, with primary focus on Southern Europe.
In this role, you'll own the technical side of client relationships throughout the entire sales lifecycle—from initial contact through solutioning, integration, and go-live. You'll be the bridge between our commercial team and clients, translating complex payment technology into business value. Your responsibilities include:
• Partner with Account Executives to position Checkout.com's products, solutions, and services; help win deals through technical excellence
• Understand merchant requirements and map them to our APIs and products; create solution designs and documentation
• Deliver product demos, build payment flow prototypes, create POCs, and customize presentations
• Provide thought leadership on payment performance topics: acceptance rates, fraud prevention, tokenization, payment methods
• Lead technical interactions with merchants across calls, meetings, and workshops
• Support RFP/RFI responses and bid management
• Champion product feedback from the market back to internal teams
• Stay current with industry standards, regulations, and payment technology trends
• Become an expert on Checkout.com's platform and capabilities
You'll need 1–3 years in a technical client-facing role (Sales Engineer, Solutions Architect, Pre-Sales Consultant, Implementation Engineer, or TAM). Strong fluency in English and Spanish is essential; French or German is a plus. You should be comfortable with REST/JSON APIs, Postman, and at least one front-end (JavaScript, React, Angular) and back-end (Java, .NET, Python, Node) technology. Payments industry knowledge—including 3DS, network tokenization, Apple/Google Pay, open banking, and fraud-risk engines—is highly valued. Experience with PSD2/PSD3/PSR and ISO-8583 is a nice-to-have. A background in engineering, product management, or e-commerce is a plus.
