Job Title: Senior Software Engineer

Company Name: Verifone

Job Details: OnsiteFull,Time

Job Url: https://hiring.cafe/viewjob/ppzm6pdhuhdg7z1v

Job Description: Posted 1mo agoSenior Software Engineer@ VerifoneView All JobsWebsiteLondon, England, United KingdomOnsiteFull TimeResponsibilities:design APIs, build services, operate systemsRequirements Summary:Senior software engineer with Node.js/TypeScript, backend design, and cloud/offline infrastructure expertise.Technical Tools Mentioned:TypeScript, Node.js, Hapi.js, Express, Fastify, NestJS, Joi, JWT, OAuth2, InversifyJS, MongoDB, Redis, AWS, Docker, Docker Compose, Jest, Mocha, Chai, Sinon, Cypress, DDD, RxJS, NgRx, Redux, Pug, SASS, PostCSS, Kafka, RabbitMQ, Redis Pub/Sub, Puppeteer, AppDynamics
What’s Exciting About the RoleThis 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 DescriptionWe 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 ExperienceProgramming LanguagesTypeScript (version 3.x or higher)Node.js (version 16 or higher)Backend Frameworks & LibrariesBackend frameworks such as Hapi.js, or alternatives including Express, Fastify, or NestJSValidation using JoiAuthentication and authorization using JWT and OAuth2Architecture & DesignStrong grounding in Clean Architecture and Domain‑Driven Design (DDD)Dependency Injection (e.g., InversifyJS)Repository and modular design patternsExperience building maintainable, testable backend systemsAPIs & DataDesign and operation of RESTful APIsAPI versioning and request validationAdvanced filtering using RSQL or equivalentExperience with MongoDB (modeling, indexing, performance tuning)Experience with Redis for caching or messagingDatabase migrations and schema evolutionCloud & InfrastructureHands‑on experience with AWS services such as EC2, S3, Secrets Manager, and CloudWatchDocker and Docker ComposeStrong discipline with CI/CD pipelines and Git workflowsTesting & QualityAutomated testing using Jest or Mocha/Chai/SinonEnd‑to‑end testing with Cypress (optional)Strong focus on code quality, reliability, and maintainabilityPreferred Skills and ExperiencePayments & SecurityExperience integrating payment providers such as Stripe, PayPal, or KlarnaKnowledge of authorization, capture, and refund flowsExperience with 3D SecureAwareness of PCI‑DSS requirements and security best practicesUnderstanding of checkout and transactional domain flowsProduction EngineeringPerformance optimization and debugging in production systemsExposure to monitoring or APM tools (e.g., AppDynamics or similar)Experience operating high‑availability or fault‑tolerant systemsFamiliarity with fraud‑related considerationsFrontend & Platform ExposureExperience working alongside frontend frameworks such as Angular or ReactFamiliarity with RxJS and state management (NgRx or Redux)Server‑side rendering with Pug templatesHTML/CSS with SASS or PostCSSIframe‑based widget embeddingAdditional BonusesFintech, payments, or e‑commerce domain experienceMessaging systems such as Kafka, RabbitMQ, or Redis Pub/SubInternationalization (i18n) systemsPuppeteer for PDF or receipt generationOur CommitmentVerifone 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.