Solutions Architect – Payment Platforms

2 weeks ago

London Area, United Kingdom YQN Pay Full time £60,000 - £120,000 per year

Solutions Architect – Payment Platforms & POS Integration

Location:
London (Hybrid) | Fintech Scale-Up

Role Overview

Join a high-growth fintech scale-up as a Solutions Architect, designing robust, scalable POS and payment infrastructure platforms from the ground up. You will architect backend systems and lead technical execution with the support of external developers, SDK partners, and SaaS integrations. This is an opportunity to grow into a senior leadership role as the business expands.

Key Responsibilities

  • Architect and deliver scalable POS and payment platforms, integrating with SDKs and third-party SaaS providers for rapid solution deployment.
  • Lead the end-to-end design, implementation, testing, and rollout of backend systems with open API-first strategies, supporting both in-house and external partner development.
  • Define modular, resilient system architecture focused on interoperability, rapid iteration, performance, and security.
  • Document and communicate technical designs and integration patterns for both technical vendors and internal teams.
  • Oversee and collaborate with external development partners; support custom integration, SDK rollout, and post-launch operations.
  • Develop and maintain reference architectures, documentation, and governance processes for ongoing platform enhancements.
  • Guide adoption of modern infrastructure approaches, including cloud-native deployments, microservices, and observability frameworks.
  • Contribute directly to business growth through hands-on architecture while mentoring junior engineers as the team scales.
  • Align technology designs with compliance, regulatory, and security requirements (e.g., PCI DSS).

What You Bring

  • 5+ years' experience architecting, building, and/or integrating POS platforms or payment processing systems in fintech, SaaS, or related high-growth environments.
  • Proven proficiency in backend software engineering, API management, integration frameworks, and cloud infrastructure.
  • Hands-on experience working with SDKs, SaaS platforms, and third-party system vendors.
  • Strong grasp of payments technology (account-to-account, card acquiring/issuing, tokenization, real-time processing, PCI DSS compliance).
  • Ability to collaborate effectively in cross-functional teams (product, external developers, compliance).
  • Willingness to drive change, iterate quickly, and grow with business needs, including stepping into elevated leadership roles.
  • Degree in Computer Science, Engineering or related discipline.

Opportunity & Growth

This role is designed for ambitious technologists ready to architect foundational POS and payments infrastructure – and to grow into lead architect or technical leadership positions as the business evolves. If you thrive on building modern payment platforms, collaborating with external partners, and influencing fintech innovation, this is a high-impact opportunity.

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