Masabi

Principal Engineer (Payments)

Masabi
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3 months ago
Remote, United Kingdom or London, United KingdomStaff+

Responsibilities

  • Shape the technical direction, architecture, standards and engineering best practices for Masabi’s payments platform.
  • Design and deliver scalable, secure, resilient and cost-effective payment solutions.
  • Guide teams evolving toward modern distributed and microservices-based architecture while balancing delivery and long-term platform health.
  • Contribute hands-on where needed through architecture reviews, design discussions and targeted technical delivery.
  • Resolve complex challenges involving scalability, resilience, operational performance and system evolution.
  • Act as a senior technical advisor across engineering teams and influence payment-domain decisions.
  • Collaborate with external providers and payment partners on integrations, technical alignment and problem-solving.
  • Contribute to technical roadmaps, prioritisation, scoping, documentation, technical forums and engineering standards.

Requirements

  • Strong experience with payment systems, including PSPs, gateways, EMV, contactless EMV and acquirers.
  • Good understanding of payment flows, transaction lifecycles and system design considerations.
  • Experience designing and evolving distributed systems and microservices architectures.
  • Experience operating at Principal or Staff level and shaping technical direction across multiple teams or domains.
  • Strong technical judgement, communication skills and ability to balance short-term delivery with long-term architectural outcomes.
  • Ability to navigate ambiguity, explain complex problems clearly and engage technical and non-technical audiences.
  • Strong experience with cloud platforms, preferably AWS, and modern infrastructure practices.
  • Experience making scalability, reliability, performance and cost trade-offs and contributing to architecture patterns or platform direction.
  • Interest in or exposure to AI-enabled systems and their production architecture implications.
  • Preferred experience includes transit or fare-payment systems, tap-to-ride systems, Visa, Mastercard, Interac and complex multi-service or event-driven architectures.
  • Familiarity with Kotlin, Java, DynamoDB, MySQL, Terraform and GitLab CI/CD.

Benefits

  • Fully remote work anywhere in the UK, with optional hybrid working from the London office.
  • 25 days of annual holiday plus the option to buy up to five additional pro-rated days.
  • Private AXA healthcare including pre-existing conditions and mental health coverage, plus life insurance and menopause support.
  • Choice of workstation and a £200 annual home-office allowance.
  • Ability to work from any country in the world for up to three months per year, subject to limitations.
  • Pension scheme, enhanced family leave pay and cycle-to-work scheme.
  • Training allowance of up to £1,000 per year.
  • Regular social gatherings with a monthly employee allowance.

Tech Stack

Amazon DynamoDBAWSGitLab CI/CDJavaKotlinMySQLTerraform

Categories

Masabi

About Masabi

201-500 employees
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