Global Payments (NYSE: GPN) is a leading payment technology and software company that powers commerce for businesses of all sizes worldwide. We help businesses grow with confidence by delivering innovative solutions that enable seamless payment acceptance, smarter operations and exceptional client experiences – online, in store and everywhere in between. With our global reach, local expertise and scale, Global Payments manages trillions in payments volume and billions of transactions across more than 175 countries. Headquartered in Atlanta, Georgia, Global Payments is a Fortune 500® company and a member of the S&P 500.
The Role
The Merchantware and Semi‑Integrated platform is developed and maintained by our Belfast team. The platform handles millions of daily card transactions for customers ranging from small merchants to 70,000‑seat stadiums. Throughput and resilience are critical as the platform is running at 100% uptime.
As a Senior Software Engineer on the Merchantware Gateway, you will contribute to the design and delivery of features on our product roadmap. You will develop backend services (and occasionally frontend components where needed) in collaboration with other engineers, product partners and technology teams. You will help refine solutions, ensure code quality, improve engineering practices, and support the delivery of secure, scalable and reliable payment services.
Duties include
Designing and implementing roadmap features to a high standard within your team
Participating in technical design discussions and contributing to architectural decisions
Improving development processes, methodologies and tools through hands‑on implementation and continuous improvement
Ensuring deliverables are technically accurate, well‑tested and delivered on time
Helping with estimation, planning and communication of progress or issues
Supporting software deployment activities across internal test and production environments
Providing mentorship and guidance to junior engineers through code reviews and pairing
Investigating issues, gathering information from multiple sources and contributing to clear, actionable solutions
Contributing to overall team success by sharing ideas, improving communication and collaborating effectively
Position Requirements
Degree in Computer Science or equivalent experience
4+ years of software development experience
Experience with server‑side development in a Windows c# .NET environment
Experience designing and implementing scalable web service solutions
Strong experience with relational databases (SQL Server or related)
Strong experience with Test Automation (unit testing, BDD/SpecFlow)
Experience with CI/CD pipelines (Bamboo, Jenkins, GitLab or similar)
Strong understanding of design patterns, OO design and refactoring practices
Knowledge of software design principles including cohesion, modularity, encapsulation and separation of concerns
Strong analytical, problem‑solving and organisational skills
Proven ability to work as part of a collaborative engineering team
Excellent communication skills
Experience in Agile/Scrum or Lean/Kanban environments
Eligibility to work in the UK on a permanent full‑time basis
Must be resident or within 1 hour commute to Belfast
Preferred
Knowledge of payment processing or PCI standards
Experience with software usability, system architecture or information security
Benefits
Competitive salary
Remote first flexible working from our new office in the heart of Belfast city centre or remotely as agreed
26 days leave (+ Bank holidays) increasing with length of service
Medical insurance
Dental insurance
Life insurance / income protection / critical illness
5% to 8% matching pension contributions and Salary Sacrifice
26 weeks maternity leave
Cycle to work scheme
Electric car scheme
Stock purchase plan
