Principal Engineer, Payments

🕒 May 28

🏢🏡 London – Hybrid

⏰ Full Time

🔴 Lead

🧑‍💻 Full-stack Engineer

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Masabi

WebsiteLinkedInAll Job Openings

201 - 500 employees

Founded 2007

🚗 Transport

☁️ SaaS

💰 Venture Round on 2022-03

Transport • SaaS

Masabi is a company revolutionizing fare payments and public transportation systems through its Fare Payments-as-a-Service model. It offers the Justride Platform, an enterprise-ready, cloud-native solution designed to facilitate seamless integration with various transit networks. Masabi provides contactless ticketing solutions, enabling smooth, connected journeys while reducing costs for agencies and operators. By leveraging smart card, mobile ticketing, and open payment systems, Masabi enhances the passenger experience, fosters sustainable cities, and powers a connected transit ecosystem that emphasizes Mobility-as-a-Service (MaaS).

📋 Description

• 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

🎯 Requirements

• Strong experience working on payment systems, including integrations with PSPs, gateways or acquirers • 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.

🏖️ Benefits

• Driven by Purpose – We believe in journeys made simple. The work isn’t always easy, but the best things never are. • Encouraged to Accelerate – Masabi is going places and our people are in the driving seat. Whether you’re taking the direct route or exploring new paths, we support your journey. • Advancing with Empathy – We put people first and foster a culture of learning, not blame. No matter your cargo, we share the load.