Verifone

This London based role sits at the core of Verifone's payments and checkout platform, where backend engineering directly impacts secure, high volume transactions used globally. You'll design and operate scalable, production critical systems that must perform reliably under real world load, evolving payment methods, and strict security requirements. Job Description We are seeking a London based Senior Software Engineer (Node.js / TypeScript) to build and operate backend services supporting payment, checkout, and transactional workflows. You will collaborate closely with Product, Frontend, Platform, and Infrastructure teams to deliver secure, scalable APIs in high throughput environments. Required Skills and Experience Programming Languages TypeScript (version 3.x or higher) Node.js (version 16 or higher) Backend frameworks such as Hapi.js , or alternatives including Express , Fastify , or NestJS Authentication and authorization using JWT and OAuth2 Repository and modular design patterns Experience building maintainable, testable backend systems APIs & Data Design and operation of RESTful APIs API versioning and request validation Advanced filtering using RSQL or equivalent Experience with MongoDB (modeling, indexing, performance tuning) Experience with Redis for caching or messaging Database migrations and schema evolution Hands on experience with AWS services such as EC2, S3, Secrets Manager, and CloudWatch Docker and Docker Compose Strong discipline with CI/CD pipelines and Git workflows Testing & Quality Automated testing using Jest or Mocha/Chai/Sinon End to end testing with Cypress (optional) Strong focus on code quality, reliability, and maintainability Preferred Skills and Experience Payments & Security Experience integrating payment providers such as Stripe , PayPal , or Klarna Knowledge of authorization, capture, and refund flows Experience with 3D Secure Awareness of PCI DSS requirements and security best practices Understanding of checkout and transactional domain flows Production Engineering Performance optimization and debugging in production systems Exposure to monitoring or APM tools (e.g., AppDynamics or similar) Experience operating high availability or fault tolerant systems Familiarity with fraud related considerations Frontend & Platform Exposure Experience working alongside frontend frameworks such as Angular or React Familiarity with RxJS and state management (NgRx or Redux) Server side rendering with Pug templates HTML/CSS with SASS or PostCSS Additional Bonuses Fintech, payments, or e commerce domain experience Messaging systems such as Kafka , RabbitMQ , or Redis Pub/Sub Puppeteer for PDF or receipt generation Our Commitment Verifone is committed to creating a diverse environment and is proud to be an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status. Verifone is also committed to compliance with all fair employment practices regarding citizenship and immigration status. Create a Job Alert Interested in building your career at Verifone? Get future opportunities sent straight to your email. Apply for this job indicates a required field First Name Last Name Email Phone Country Phone Location (City) Resume/CV Enter manually Accepted file types: pdf, doc, docx, txt, rtf Enter manually Accepted file types: pdf, doc, docx, txt, rtf Have you ever been employed by Verifone? Select How did you hear about us? Select If referred by a Verifone employee, please let us know who referred you? (applicable only if you have responded as 'Referral' to the prior question) Are you flexible on your working location? 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