Senior Software Engineer in London

Visa is a world leader in payments technology, facilitating transactions between consumers, merchants, financial institutions and government entities across more than 200 countries and territories, dedicated to uplifting everyone, everywhere by being the best way to pay and be paid. At Visa, you will have the opportunity to create impact at scale — tackling meaningful challenges, growing your skills and seeing your contributions impact lives around the world. Join Visa and do work that matters — to you, to your community, and to the world. Progress starts with you.

Currencycloud was acquired by Visa in December 2021. Our Senior Software Engineers are responsible for implementing an industry-leading API that has already processed over 50 billion USD of cross-border transactions for over 5 million end users, and is available to our clients 24x7. But we are not stopping there, and our engineers are at the forefront of taking us forward to meet the demands of even greater scale. You will be joining the FX Routing and Aggregation (FXRA) team, responsible for the core FX trading platform that powers Currency Cloud's foreign exchange capabilities. Our team owns multiple microservices spanning FX pricing, risk management, trade routing, market data integration, and treasury operations. Our stack runs on AWS as a set of distributed applications using Kubernetes and a microservice-led architecture. We are also utilising Kafka for our streaming and PACT for Contract testing.

What you will get to do:

• Build and maintain mission-critical FX trading services including pricing engines, risk management systems, and market data providers.
• Work with real-time FX market data from providers like Barclays and JP Morgan using FIX protocol.
• Design and implement high-throughput, low-latency services handling billions in FX transactions.
• Lead technical discussions around hexagonal architecture, event-driven patterns, and distributed systems design.
• Mentor junior engineers and establish best practices for the team.
• Own your domain end-to-end with clear service boundaries and independent deployment paths.
• Collaborate with Treasury, Trading, and Platform teams across the organization.

You will get:

• Clear ownership of your domain.
• A clean modern codebase.
• An independent path to production.
• Strong platform and product support.
• The ability to make real changes with real business value.

Our Tech Stack includes:

• Object-oriented programming forms the bulk of our codebase, currently in Java, versions 11+, and ideally Spring boot framework.
• Highly-scalable, highly-available, cloud-native applications on AWS are key to our next phase of growth, are written to 12-factor principles and fit into our microservices architecture.
• Cloud-related tools, services, and distributed system observability to support these applications, such as Docker, Kubernetes, ElasticSearch, log management systems, and Datadog APM.
• API specifications, conforming to the OpenAPI (Swagger) standard, provide a clean boundary both externally between our customers and our product, and internally between our microservices.
• SQL, and large SQL databases, provide the persistence layer for our applications.
• Infrastructure automation is primarily owned by the infrastructure team, but you will be a consumer of their work; familiarity with AWS, Terraform and Docker is beneficial.
• Testing approaches, including TDD, BDD and Contract Testing, all form an important part of our approach to quality assurance.
• Agile development, with teams broadly aligned with the Spotify - Squads and Tribes - model.
• Continuous Integration and Continuous Delivery pipelines allow us to automate all the things, providing repeatable builds and consistent deployments.
• GitHub, and the GitHub PR review process, forms a core part of our developer workflow.
• Teamwork, and cross-team collaboration, is fundamental to the delivery of our applications.

This is a hybrid position. Expectation of days in office will be confirmed by your Hiring Manager.

Preferred Qualifications:

• Experienced in Java Backend Development Skills with functional Java (versions 8+) and Spring (ideally Spring boot).
• Agile ways of working such as Scrum or Kanban in cross-functional teams.
• Expert knowledge of Docker, EKS, AWS (public cloud) and Kafka.
• Ability to communicate equally effectively with both technical and non-technical stakeholders.
• Modern Cloud-Native architectures and practices.
• Working in a DevOps environment, or passion and willingness to work in this way.
• Proven delivery of well-tested, scalable, fault-tolerant and performant solutions.
• A pragmatic approach to solutions and delivery of technical projects.
• A self-starter who takes accountability for getting things done.
• Exceptional structure and attention to detail.
• Great written and verbal communication skills.
• Comfortable working in a scale-up or growth environment and as part of a wider team.

Visa is an EEO Employer. Qualified applicants will receive consideration for employment without regard to race, colour, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status. Visa will also consider for employment qualified applicants with criminal histories in a manner consistent with EEOC guidelines and applicable local law.