Full-Time
Principal Engineer
Payments
Masabi
201-500 employees
Offers FPaaS mobile ticketing for transit
No salary listed
Remote in UK + 1 more
More locations: London, UK
Remote
Fully remote within the United Kingdom; London-based employees may alternatively work hybrid from the London office.
 Software Engineering (1) |
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- Strong experience working on payment systems, including integrations with payment service providers, 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 judgment and the ability to balance short-term delivery with long-term architectural outcomes.
- Ability to navigate ambiguity and turn complex problems into clear, practical technical approaches.
- Ability to communicate clearly with technical and non-technical audiences.
- Ability to contribute hands-on technical work when needed while maintaining a focus on system-level impact.
- Strong experience with cloud platforms, preferably Amazon Web Services, and modern infrastructure practices.
- Experience working on systems where scale, reliability, performance, and cost trade-offs matter.
- Experience contributing to engineering standards, architecture patterns, or platform direction.
- Interest in or exposure to artificial intelligence-enabled systems, particularly the architectural implications of production systems.
- Shape the technical direction of the payments platform by contributing to architecture, standards, and engineering best practices.
- Design and deliver scalable, secure, resilient, and cost-effective payment solutions aligned with the platform direction.
- Support teams in building toward 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, prioritization, technical scoping, and architecture discussions for complex initiatives.
- Produce clear technical documentation and contribute to engineering standards, technical forums, and good practices across the organization.
- Experience with transit systems or fare payment systems, such as tap-to-ride systems.
- Familiarity with card schemes such as Visa, Mastercard, or Interac.
- Experience working in complex, multi-service, or event-driven architectures.
- Familiarity with Kotlin and Java.
- Familiarity with DynamoDB and MySQL.
- Familiarity with Terraform and GitLab CI/CD.
Masabi provides Fare Payments as a Service (FPaaS) for public transit, offering mobile ticketing and fare collection that agencies can deploy quickly. Its platform lets transit operators create branded mobile apps for ticket purchases or embed the system into third-party apps for MaaS integrations, enabling services like journey planning and ticket buys through popular apps (e.g., Uber). The product is modular, so agencies can deploy a full fare system or select specific components to fit their needs, serving clients from large metropolitan systems to regional operators worldwide. Revenue comes from service fees charged to transit agencies and operators. Masabi’s goal is to modernize and simplify fare collection by replacing old, bespoke technologies with scalable, cost-efficient, rapidly deployable solutions that improve accessibility and convenience for riders.
Company Size
201-500
Company Stage
Series C
Total Funding
$40.8M
Headquarters
London, United Kingdom
Founded
2001
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Simplify's Take
What believers are saying
- June 2026 wins at IndyGo, Cleveland RTA, and Collier Area Transit expand regional footprints.
- May 11, 2026 Galicia reached 50% rollout across 32 contracts, validating statewide scale.
- Masabi now powers over 300 agencies and processes over $1 billion annually.
What critics are saying
- Transit procurement cycles stay slow; delayed agency awards cap revenue recognition for quarters.
- Passenger integration after February 2026 consumes engineering focus and risks product drift.
- Cubic and Conduent bundle hardware and payments, squeezing Masabi into a replaceable module.
What makes Masabi unique
- June 17, 2026 Sourcewell lets 50,000+ agencies buy Masabi without direct procurement.
- Masabi's Justride unifies mobile ticketing, ABT, open payments, and hardware in one SaaS stack.
- Passenger acquisition on February 4, 2026 adds white-label apps and real-time passenger information.
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Benefits
Remote Work Options
Life Insurance
Private Healthcare
Enhanced Family Leave Pay
Pension Scheme
Training Programs
Home Office Stipend
Flexible Work Hours
Growth & Insights and Company News
6 month growth
↓ -2%1 year growth
↑ 0%2 year growth
↑ 0%Masabi wins Sourcewell contract, giving 50,000+ public agencies a fast-track route to modern fare collection. Masabi has been awarded a cooperative purchasing contract with Sourcewell under its "Transportation Services Payment Solutions" category. The agreement gives transit agencies a faster, simpler route to adopting modern fare payment systems by removing a lengthy direct procurement process and allowing them to fast-track innovation. Sourcewell conducts a rigorous, nationally competitive solicitation process on behalf of public agencies, evaluating and awarding cooperative purchasing contracts that satisfy public procurement requirements. Having been awarded a contract through that process, Masabi's Justride platform and many hardware options are now available for direct procurement by public agencies, municipalities, counties, tribal governments, and transit authorities across the US and Canada through the Sourcewell cooperative purchasing program. Justride is Masabi's open, enterprise-grade SaaS platform, covering the full spectrum of fare payments from Mobile Ticketing to Account-Based Ticketing (ABT) and Open Payments. Agencies can procure the complete platform or a standalone module and expand their solution over time as needs and budgets evolve, with a platform designed from the ground up to meet the needs of all riders, including the unbanked and underbanked. Through the Sourcewell Master Service Agreement, public organizations can move straight to procurement, as Sourcewell contracts satisfy competitive public solicitation requirements on behalf of member agencies, providing the procurement documentation and audit trail that public bodies need to move forward with confidence. Agencies benefit from pre-negotiated, highly competitive rates secured through Sourcewell's national buying power, ensuring maximum efficiency of public budgets. And, unlike single-state purchasing vehicles that often restrict out-of-state procurement, the Sourcewell contract is offered across the US and Canada, allowing agencies to adopt Justride without cross-border legal complications. "Public agencies want to deliver better journeys for their riders, but procurement can slow that ambition down," said Brian Zanghi, CEO at Masabi. "This contract removes that friction, giving agencies a fast, low-risk path to modern fare payments. We are delighted to partner with Sourcewell to put enterprise-grade fare technology within easy reach of communities of all sizes." Masabi powers fare payments for more than 300 transit agencies worldwide, with the Justride platform processing over $1 billion in fare transactions annually across networks ranging from small community operators to some of the largest and most complex systems. With this Sourcewell contract in place, more communities across the US and Canada can now access that same world-class fare technology on terms that match their scale, timeline, and budget. Find me on:
Spain's first regional account-based ticketing system, the Galician Mobility Platform 4.0, is now live across more than 50% of interurban transport services in Galicia. Powered by Masabi's Justride platform, the system covers 32 transport contracts across key metropolitan areas including A Coruña and Pontevedra. Delivered in partnership with Plexus Tech for the Xunta de Galicia, the platform allows passengers to plan, pay and travel using mobile phones, eliminating the need for cash or physical tickets. Users can manage a virtual wallet, purchase and validate tickets, and access multimodal journey planning through a single app. The system will continue expanding to eventually cover more than 120 operators under a unified fare collection system, with plans to add additional payment methods including open payments.
Masabi acquires customer information and ticketing system supplier Passenger Technology Group. Passenger Technology Group has a contract to supply ticketing systems to Edinburgh Trams. UK: Global fare collection technology company Masabi has acquired Passenger Technology Group Ltd, which provides white-label mobile applications, websites and real-time information tools used by public transport authorities and operators across the country. 'Passenger has cultivated an excellent reputation for delivering intuitive, high-quality digital experiences that put customers first', said Masabi CEO Brian Zanghi on February 4. 'By combining Passenger with Masabi's offerings, Railway Gazette International will accelerate its vision of a fully connected, cloud-based mobility platform that can serve both operators and passengers worldwide. This acquisition enhances its ability to support cities and transport authorities and operators as they modernise and move toward more seamless, data-driven mobility systems.' Passenger Technology Group CEO Tom Quay said joining Masabi would provide 'the opportunity to scale its technology and bring the Passenger customer experience platform to new markets, while continuing to serve existing clients with the same commitment and agility they have come to expect'.
Masabi, a global leader in SaaS fare collection for public transport, has acquired Passenger Technology Group, a UK-based passenger information and ticketing company. Financial terms were not disclosed. The acquisition combines Masabi's Justride fare collection platform with Passenger's white-label mobile applications, websites and real-time information tools. Passenger serves approximately 100 public transport authorities and operators across the UK, facilitating over 100 million journey plans annually. The deal aims to create a fully connected, cloud-based mobility platform offering end-to-end plan-pay-ride passenger experiences, including mobile ticketing, account-based ticketing and open payments. Both companies will continue serving existing clients whilst developing integrated products and expanding into new markets.
Masabi acquires Passenger Technology Group, integrating passenger information technologies into its SaaS platform. Masabi announces it has acquired Passenger Technology Group, integrating passenger information and ticketing technologies into its SaaS fare collection platform for public transport. Passenger Technology Group Ltd is a UK-based provider of passenger information and ticketing software for public transport authorities and operators. The transaction brings Passenger Technology Group into Masabi's portfolio of mobility software [...] Masabi announces it has acquired Passenger Technology Group, integrating passenger information and ticketing technologies into its SaaS fare collection platform for public transport. Passenger Technology Group Ltd is a UK-based provider of passenger information and ticketing software for public transport authorities and operators. The transaction brings Passenger Technology Group into Masabi's portfolio of mobility software solutions, expanding the scope of its enterprise-grade SaaS fare collection offering. Financial terms of the deal were not disclosed. The acquisition positions Masabi to combine its Justride fare collection platform with Passenger Technology Group's white-label digital products, including mobile applications, websites and real-time passenger information systems. Masabi expands SaaS offer with Passenger Technology. Passenger Technology Group develops white-label passenger information systems that enable transport authorities and operators to deliver branded digital experiences to passengers. Its product portfolio includes mobile and web-based applications, as well as real-time service information tools. Masabi stated that the integration of these capabilities will align fare collection, payments and passenger information within a single software ecosystem. Masabi confirmed that it will present combined capabilities from Masabi and Passenger Technology Group at Transport Ticketing Global in London on 17 - 18 March 2026, where it will showcase the expanded functionality of its public transport ticketing and passenger information technologies. Passenger Technology Group will continue to support its existing customer base following the acquisition. Masabi stated that continuity of service for current Passenger Technology Group clients will be maintained while the two companies work on product integration and the development of additional functionality. Passenger Technology Group's technologies will become part of Masabi's broader mobility software portfolio. Both companies operate from the United Kingdom and serve public transport authorities and operators with software-based solutions. Masabi indicated that the acquisition supports the expansion of its end-to-end plan-pay-ride capabilities, covering ticket purchasing, payments, service information and passenger communications through cloud-native systems. Brian Zanghi, CEO of Masabi, said: "Passenger has cultivated an excellent reputation for delivering intuitive, high-quality digital experiences that put customers first. By combining Passenger with Masabi's offerings, we will accelerate our vision of a fully connected, cloud-based mobility platform that can serve both operators and passengers worldwide." Tom Quay, CEO of Passenger Technology Group Ltd, said: "Masabi is a company that shares our focus on innovation, reliability, and improving public transport for both operators and passengers. Joining Masabi gives us the opportunity to scale our technology and bring the Passenger customer experience platform to new markets, while continuing to serve existing clients."