Sales Engineer – London – This mid‑level position involves providing technical leadership and guidance to clients throughout the sales lifecycle, from initial contact to solutioning, integration, and go‑live. The role requires technical ownership of client relationships, collaboration with internal technology and business teams, and the ability to translate business and technical requirements into Checkout.com products and solutions.
What you will be doing:
- Support the commercial team to position Checkout.com's products, solutions and services, and ultimately help to win deals. You will be a key partner to Account Executives on all matters related to product, payments, regulation and tech.
- Understand merchant requirements and technical needs, map these to our APIs and products, and create solution designs and internal documentation.
- Run demos, build “show‑me” payment flows, create PoCs, customise and create presentations.
- Provide thought leadership on all aspects of Payment Performance – Acceptance Rate, Fraud Prevention, Tokenisation, Payment Methods and others.
- Lead all technical interactions with merchants, from chats and calls to meetings and workshops until the deal is won.
- Support the BID management team with RFP and RFI responses.
- Enable internal functions, commercial and tech, with market and merchant feedback on product capabilities. Champion product change and improvement.
- Stay constantly up to date with industry standards, solutions and tech.
- Be an expert of Checkout.com's platform and product.
About You:
- 3‑5 years experience as a Sales Engineer / Solutions Architect / Pre‑Sales Consultant / Implementation Engineer or TAM.
- Experience working in a technical client‑facing role.
- Drives results with a strong commercial focus and proactive approach.
- Clear written and verbal English. Able to communicate to both technical (developers, product) and business (payments, finance, C‑level) stakeholders.
- Able to thrive in a fast‑paced environment.
- Ability to translate technical jargon into business speak.
- Problem‑solver: able to reproduce, isolate and explain issues using logs, API responses and tests.
- Highly organised and able to prioritise shifting workloads and responsibilities effectively.
- Familiar with API‑based integration methods, associated best practices, and related tools/frameworks (REST/JSON APIs, Postman).
- Experience with at least one common front‑end (pure JavaScript, React, Angular, etc.) and back‑end (Java, .NET, Python, Node, etc.) technology.
- Previous exposure to RFI/RFP.
- Understanding of end‑to‑end payment flow.
- Payments industry exposure with an understanding of the related rules and regulations and payment schemes.
- Experience with 3DS, Network Tokenisation, Apple/Google Pay, Open Banking or fraud‑risk engines.
Nice to have:
- Familiarity with PSD2/PSD3/PSR, FCA, ISO‑8583.
- Additional language(s) is a plus.
- Former engineering, developer, or product manager background.
- Held prior roles in the e‑commerce industry.
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