About the role
Ready to take your career global? Make your mark at one of the biggest names in payments. We’re looking for an InP - Software Engineer I to join our ever-evolving Payrix Team and help us unleash the potential of every business.
What You’ll Own As a Backend C# Engineer, you’ll be part of a high-impact team building the next-generation embedded payments platform for software providers. You’ll work with modern .NET technologies to design scalable, secure, and modular services that power seamless payment experiences. Your work will directly enable Independent Software Vendors (ISVs) to launch, grow, and manage embedded payments programs with minimal friction and maximum control.
- Designing and developing scalable backend services using C# and .NET
- Building modular APIs and microservices that support onboarding, payment processing, payouts, reconciliation, and reporting
- Integrating with key systems including Express Gateway, Hosted Payments Pages, TriPOS, FraudSight, and Payrix services
- Collaborating with frontend, product, and infrastructure teams to deliver end-to-end features
- Writing clean, maintainable, and testable code following TDD principles
- Participating in code reviews and contributing to architectural decisions
- Ensuring performance, security, and reliability across distributed systems
- Supporting CI/CD pipelines and infrastructure automation
What You Bring
- 2-4 years of experience in backend development with strong expertise in C# and .NET
- Solid understanding of microservices architecture and distributed systems
- Experience with RESTful API design and API-first development
- Strong grasp of software design principles and patterns (e.g., SOLID, DDD, Repository, Factory, Observer)
- Experience with relational databases (PostgreSQL) and caching systems (Redis)
- Familiarity with event-driven architecture and message brokers (Kafka)
- Experience with automated testing and TDD using frameworks like xUnit, NUnit, or similar
- Good understanding of CI/CD pipelines and DevOps practices
- Excellent communication skills and a collaborative mindset
Technologies You’ll Work With
- Core Backend: C#, .NET, PostgreSQL, Redis, Kafka
- Architecture & Patterns: Microservices, Domain-Driven Design, API-first, Event-driven systems
- Infrastructure & DevOps: Kubernetes (AWS), Terraform, GitHub Actions, Jenkins
- Testing & Quality: xUnit, NUnit, TDD, Playwright (for end-to-end flows), OpenTelemetry
- Security & Identity: KeyCloak, OpenFGA
- Monitoring & Observability: Grafana, Prometheus, OpenTelemetry
- AI Integration (Nice to Have): Amazon BedRock, Claude Sonnet, Titan Embedding Model, LangChain, OpenSearch
Bonus If You Have
- Experience in fintech, payments, or banking platforms
- Exposure to embedded payments or white-labeled product development
- Familiarity with context engineering or retrieval augmented generation (RAG)
- Contributions to open-source or internal developer tooling
About The Team Our inclusive and global teams win together every day. We’re proud to have the best minds in the industry, who you can learn from as you grow your career. The people, the energy, the connections – it’s unmatched. Come and be part of an ever-evolving company and get dynamic opportunities that go beyond borders.
What makes a Globalpayer? Globalpayers think like a client, act like an owner and win as one team. We’re curious and innovative – always finding better ways to deliver impact. We empower each other to make decisions, and it’s our passion that drives excellence in everything we set out to do.
Does this sound like you? Then you sound like a Globalpayer. Apply now to take your career global.
Millions of jobs, with real people getting hired every day
Questions, answered
Click "Apply with JobAssist" – we tailor your resume and application to this role and submit it for your approval.
Yes. This role at Worldpay was screened before publishing – we confirmed the employer before listing it.
The employer didn't disclose a salary range for this listing. JobAssist shows pay whenever it's available.
This position can be done from anywhere, with no in-office requirement.
Yes – every application is tailored from your profile and this job's requirements, and you can review and edit before it's sent.