(Senior) Solutions Engineer in London

About Payrails

Payrails is a global payment software company helping leading enterprises to take control of their payment operations and maximize performance. With deep experience in the payments space and firsthand knowledge of merchants' challenges, we've seen how fragmented, complex, and inefficient these systems can become. Now, we are setting a new industry standard for how enterprises around the world manage and optimize payments, with more control, visibility and flexibility than ever before.

Our vision is to reimagine payments from the ground up. We are building a deeply integrated meta layer that spans the entire payment lifecycle with a modular architecture. This helps us give leading brands building blocks to craft solutions to most complex operational challenges, tailor seamless customer experiences and grow their business.

We are backed by some of the world's top investors including Andreessen Horowitz, HV Capital, EQT Ventures and General Catalyst, who share our mission to simplify payment complexity globally.

At Payrails, we’re committed to building a team of exceptional people – not just talented, but driven to build, solve, and deliver at the highest level. Excellence isn’t just a value here; it’s a way of working. We believe that great people thrive in environments where there’s trust, clarity, and shared purpose. We work openly and collaboratively, with deep respect for each other’s craft. Everyone is encouraged to understand the bigger picture – what we’re building, why it matters, and what stands in the way. When people have that context, they move faster, take ownership, and make better decisions. We care about creating a culture where people feel inspired to do their best work and a deep sense of responsibility to help us bring our vision to life. Success at Payrails means staying focused on the problems that matter most, and executing with purpose.

Your team

Payrails is a highly dynamic workplace with our Merchant Onboarding team fronting to our clients. Our mission is:

• Deliver tailor‐made and innovative solutions to complex and demanding merchant requirements, pain points, and use cases
• Provide best‐in‐class onboarding experience and service to our merchants
• Optimise payment performance and amaze our merchants with data‐driven insights and growth opportunities in the fintech sector
• Follow the latest fintech trends to improve our offering and empower our clients' growth

Our team offers you the opportunity to work alongside a group of highly ambitious and knowledgeable people and the freedom to make your own impact. You, as our Solutions Engineer, will be overseeing our customers' end‐to‐end technical journey at Payrails.

How you will make an impact

• You will lead end‐to‐end integration engineering – from high‐level architecture design through hands‐on code implementation
• You will act as the technical expert and main point of contact in both pre‐ and post‐sales, supporting positioning, closing, and onboarding of new merchants
• You will build trusted relationships with merchants by educating them on Payrails' unique value proposition, best practices, and product roadmap
• You will deliver solution demos, executive briefings, and technical workshops that showcase how Payrails solves complex payment challenges
• You will collaborate cross‐functionally with Payment Strategy, Sales, Product and Engineering teams to deliver seamless onboarding and drive continuous improvements
• You may travel occasionally to customer sites to oversee installations, workshops, or technical deep‐dives

What we are looking for

• You have a total of 8–10 years of professional experience, including 2–4 years in a Solution Engineering or Solution Architecture role, with hands‐on experience working with APIs and SDKs, ideally in fast‐paced startup or scale‐up environments
• You are proficient in one or more programming languages (Java, Python, JavaScript/TypeScript, Ruby, Golang, C#, .Net)
• You have experience with debugging API calls and monitoring tools (Grafana, Splunk, etc.)
• You have strong skills in technical diagramming (sequence diagrams, system diagrams, mockups)
• You have proven technical leadership on user‐facing projects, from design through delivery
• You have excellent communication and presentation skills, with the ability to engage both technical and non‐technical stakeholders
• You are confident in leading workshops, demos, and discovery sessions with executive audiences
• You have a track record of aligning technical solutions to business objectives and driving measurable customer outcomes
• You are fluent in English; additional languages (Arabic, French, German, Italian, Spanish) are a plus
• Familiarity with the payments space (checkout, authentication, payouts, marketplaces) is a strong plus

What we offer

• High impact and high velocity environment with the most talented and ambitious people you will ever work with
• A chance to shape the story of a company and a category from the ground up
• Real ownership. You'll have the freedom and trust to build, test, and take lead
• A product used by the best brands around the world
• Visa and relocation support for you and your family where required
• Competitive salary and equity package