masabi - Principal Engineer (Payments)
Requirements
• Experience with transit payments (e.g. contactless EMV, tap-to-ride systems) • Familiarity with card schemes (e.g. Visa, Mastercard, Interac) • Experience working in complex, multi-service or event-driven architectures • Familiarity with a range of tools and technologies including: • Development: Kotlin, Java • Data storage: DynamoDB, MySQL • Infrastructure as code and CI/CD: Terraform, GitLab CI/CD • // You don’t need to have experience in every area listed above. If you bring strong fundamentals, good judgement and a willingness to learn, we’d still love to hear from you.
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
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 • Careers at Masabi are for people going places - driven by a mission to make transit fair and accessible for all. • // We are a network of innovators from all walks of life, passionate about making a difference. At Masabi, we operate with openness and trust, creating an environment where everyone feels empowered to bring their whole, authentic selves to work. • Whoever you are, just be yourself. • // We welcome applications from underrepresented groups, including disabled and neurodivergent people, and can make adjustments at any stage of the process. You’re also welcome to share your pronouns whenever you feel comfortable. Together, we simplify journeys, remove barriers, and improve daily life for millions. • 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. • We’re already powering journeys - are you ready to join us?
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