Principal Engineer (Payments)
Masabi · Remote · London - Remote · United Kingdom - Remote · London - Hybrid ·
COMPENSATION
€•• – ••k
Listed on the employer's job board (Ashby)
- Principal Engineer level
- Fully remote (UK)
- Payments & Fintech
- AWS Cloud
- Microservices
Join Masabi’s Architecture team as a Principal Engineer focused on the payments domain. You will shape the technical strategy for fare collection platforms used by millions worldwide, balancing high-level architectural decisions with hands-on implementation support.
This position requires deep expertise in payment systems and distributed architectures. You will act as a senior technical leader, helping teams build resilient microservices and navigating complex technical challenges to ensure platform health and scalability.
What you'll do
- Define technical direction and standards for the payments platform
- Design scalable, secure, and cost-effective payment solutions
- Guide teams in adopting modern microservices architectures
- Conduct architecture reviews and provide hands-on technical support
- Solve complex challenges related to scalability and resilience
- Advise engineering teams on technical decisions in payments
- Collaborate with external providers on integrations and alignment
- Contribute to roadmap planning and technical scoping
- Produce documentation and uphold engineering best practices
What you'll need
- Strong experience with payment systems, PSPs, and EMV
- Deep understanding of transaction lifecycles and flows
- Proven track record designing distributed microservices
- Experience at Principal or Staff engineering level
- Ability to balance delivery speed with long-term quality
- Skilled at clarifying ambiguous problems into technical plans
- Clear communicator for technical and non-technical audiences
- Proficient with cloud platforms, preferably AWS
- Experience managing scale, reliability, and cost trade-offs
Nice to have
- Background in transit or fare payment systems
- Familiarity with Visa, Mastercard, or Interac schemes
- Experience with event-driven or multi-service architectures
- Knowledge of Kotlin or Java development
- Experience with DynamoDB or MySQL storage
- Proficiency with Terraform and GitLab CI/CD
Stack
- AWS
- Kotlin
- Java
- DynamoDB
- MySQL
- Terraform
- GitLab CI/CD
How you'll work
- Open to candidates based anywhere in the UK
- Fully remote work option available
- Hybrid working available for London-based staff
- Work up to 3 months per year from any country
What you get
- 25 days holiday plus option to buy 5 more
- Private healthcare via AXA including mental health
- Life insurance and pension scheme
- Annual training allowance up to £1000
- £200 annual home office allowance
- Enhanced family leave pay
- Cycle to work scheme
- Monthly allowance for social gatherings