Verifone

Principal Software Engineer

Verifone  •  London, GB (Hybrid)  •  3 months ago
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Job Description

Why Verifone

For more than 30 years, Verifone has been a global leader in electronic payment technology. We work with leading retailers, merchants, banks, and technology partners to deliver secure, reliable, and innovative payment solutions worldwide.

Verifone offers a fast‑paced, collaborative environment focused on engineering excellence, customer impact, and continuous innovation. We are proudly an in‑office organization and currently support a hybrid work model, which is reviewed regularly.

We offer a fast‑paced, collaborative environment focused on results, innovation, and customer impact. Verifone is proudly an in‑office culture, with a hybrid work schedule currently available and reviewed regularly.

What’s Exciting About the Role

This London‑based Principal Software Engineer role sits at the heart of Verifone’s global payment gateway platform. You will help shape the technical direction of systems responsible for processing high‑volume, mission‑critical financial transactions worldwide.

At this level, the role goes beyond feature delivery. You will drive architectural decisions, set engineering standards, and influence how teams design, build, and operate secure, scalable backend systems. Success in this role is defined by technical leadership, sound judgment in complex trade‑offs, and ownership of systems that must perform reliably under real‑world load and regulatory constraints.

We are seeking a Principal Software Engineer based in Londonto provide technical leadership across backend services supporting our global payment gateway system. You will design and evolve core platform capabilities, guide architectural decisions across microservices, and mentor engineers while remaining hands‑on with critical systems built using Java and Spring Boot.

You will work closely with senior engineering, platform, product, and infrastructure partners to ensure our systems scale globally, remain secure, and meet the highest standards for availability and performance.

Required Skills and Experience

Programming Languages

  • Java 17 or higher

Frameworks and Libraries

  • Spring Boot
  • Spring Web(REST APIs)
  • Spring Data
  • Spring Securitywith JWT / OAuth2

Architecture & System Design

  • Deep experience designing and operating microservice‑based architectures
  • Strong application of clean code practices and SOLIDprinciples
  • Ownership of system‑level architecture and cross‑service design decisions
  • Strong understanding of security, authentication flows, and data protection in distributed systems

API & Data

  • Design and governance of RESTful APIs, JSON, and HTTP standards
  • API versioning and backward‑compatibility strategies
  • MongoDB / NoSQLexpertise, including:
    • Data modeling
    • Indexing strategies
    • Performance optimization
  • Advanced experience with Java concurrency, streams, and performance tuning

Cloud & Infrastructure

  • AWS services including EC2, ECS/EKS, S3, RDS and/or DynamoDB, and CloudWatch
  • Dockerand containerized deployments
  • CI/CD pipelines and Git‑based workflows
  • Experience designing systems for scalability, resilience, and operability

Testing & Engineering Practices

  • Strong unit and integration testing practices using JUnitand Mockito
  • Ownership of quality standards, testability, and CI discipline
  • Experience working in Agile / Scrumenvironments and influencing engineering best practices

Experience Level

  • Principal‑level backend engineering experience building and operating large‑scale, high‑performance systems
  • Approximately 8+ years of backend development experience, with several years working on production Java and Spring Boot services
  • Proven experience owning architecture and technical direction for critical backend platforms
  • Extensive production experience with MongoDB, including modeling, indexing, and performance optimization

Preferred Skills and Experience

Payments & Domain Expertise

  • Background in fintech or payments
  • Experience with payment processing, transactions, and financial data
  • Strong understanding of high‑availability, security, and data‑consistency trade‑offs

Eventing & Distributed Systems

  • Experience with event‑driven architectures
  • Messaging or streaming technologies such as:
    • Kafka
    • AWS SQS
    • Similar eventing systems

Platform & Technical Leadership

  • Deep experience with AWS, Docker, and CI/CD practices
  • Proven ability to mentor engineers and raise the technical bar across teams
  • Strong sense of ownership for systems running in production

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.

Verifone

About Verifone

The world’s leading brands trust Verifone for global payments. We power the boundless payments grid for merchants, fintech companies, and financial institutions worldwide. By combining a flexible payments platform comprised of devices, applications, services, acquiring and more, an open ecosystem of 2,500+ integrations, and four decades of payments expertise, Verifone eliminates complexity and expands what’s possible across every payment channel. Verifone operates in 165 countries and processes $8 billion in transactions annually. At Verifone, we believe payments should never be a barrier—they should be a launchpad for growth.

Looking to join a global team shaping the future of payments? Learn more about life at Verifone and our open opportunities at https://www.verifone.com/en/global/careers.

Industry
Finance & Insurance
Company Size
1,001-5,000 employees
Headquarters
New York, NY
Year Founded
1981
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