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Principal Engineer (Payments)

Masabi· Engineering
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RemoteFull-timePosted 4mo ago

About the role

Senior technical leader focused on Masabi’s payments platform, shaping architecture, guiding complex decisions, and delivering scalable, secure payment solutions across a microservices-based architecture.

Responsibilities

  • Shape the technical direction of Masabi’s payments platform, contributing to architecture, standards and engineering best practices
  • Design and deliver scalable, secure, resilient and cost-effective payment solutions aligned with Masabi’s platform direction
  • Support teams in building towards a modern, microservices-based architecture while balancing delivery priorities and long-term platform health
  • Stay close to technical delivery through architecture reviews, design discussions and targeted hands-on contribution where needed
  • Identify and work through complex technical challenges related to scalability, resilience, operational performance and system evolution
  • Act as a senior technical advisor across engineering teams, supporting and influencing technical decisions, particularly within the payments domain
  • Work with external providers and payment partners on integrations, technical alignment and problem-solving
  • Contribute to technical roadmap planning, prioritisation, technical scoping and architecture discussions for complex initiatives
  • Produce clear technical documentation and contribute to engineering standards, technical forums and good practices across the organisation

Qualifications

  • Strong experience working on payment systems, including integrations with PSPs, gateways, EMV, contactless EMV, acquirers, etc.
  • Good understanding of payment flows, transaction lifecycles and system design considerations
  • Experience designing and evolving distributed systems and microservices architectures
  • You've operated at Principal or Staff level, shaping technical direction across multiple teams or domains
  • Strong judgement and the ability to balance short-term delivery with long-term architectural outcomes
  • Comfortable navigating ambiguity and turning complex problems into clear, practical technical approaches
  • Clear and thoughtful communicator, able to engage both technical and non-technical audiences
  • Comfortable being hands-on where needed, while maintaining a focus on system-level impact
  • You have strong experience with cloud platforms (AWS preferred) and modern infrastructure practices
  • You've worked on systems where scale, reliability, performance and cost trade-offs matter, and can navigate those decisions thoughtfully
  • You've contributed to engineering standards, architecture patterns or platform direction
  • Interest in or exposure to AI-enabled systems, particularly understanding architectural implications in production

Skills

Required:Payments domain expertiseDistributed systemsArchitecture leadershipCloud platforms

Benefits

  • 25 days of holiday per year plus the option to buy another 5 days pro-rated
  • Private Healthcare via AXA, including pre-existing conditions and mental health
  • Life Insurance
  • Menopause support
  • Choice of workstation
  • Ability to work for up to 3 months per year from any country in the world (certain limitations)
  • Pension scheme
  • Training allowance of up to £1000 per year
  • £200 annual allowance for any home office need or improvement
  • Enhanced family leave pay
  • Cycle to work scheme
  • Regular social gatherings with a monthly allowance for each employee
  • Fun and collaborative environment with a focus on making a difference in the world
Last updated Oct 8, 2026. Interested? Apply on the company site.

About Masabi

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