Software Engineer I (C#.Net, Rest API)_2-4 Yrs_Bangalore/Pune

Worldpay India Pte Ltd; India; On-site; INR 1,100,000 - 1,800,000; Full time

Job summary

Worldpay India Pte Ltd is seeking a Backend C# Engineer to join the Payrix Team in building a next-generation embedded payments platform for software providers. You will design scalable backend services using C# and .NET, develop modular APIs and microservices, and integrate with key systems to support onboarding, payments, payouts, reconciliation, and reporting.

Ideal candidates have 2-4 years of backend experience, strong knowledge of RESTful API design and distributed systems, and a solid

Qualifications

• 2-4 years of backend development experience with C# and .NET.
• Strong understanding of microservices architecture and distributed systems.
• Experience with RESTful API design and API-first development.
• Solid knowledge of SOLID, DDD, Repository, Factory, Observer design patterns.

Responsibilities

• Design and develop scalable backend services using C# and .NET.
• Build modular APIs and microservices for onboarding, payments, reconciliations, and reporting.
• Integrate with key systems (Express Gateway, Hosted Payments Pages, TriPOS, FraudSight).
• Collaborate with frontend, product, and infrastructure teams to deliver end-to-end features.
• Write clean, maintainable code with TDD; participate in code reviews and architectural decisions.
• Ensure performance, security, and reliability across distributed systems.

Job description

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.

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Recruitment at Worldpay works primarily on a direct sourcing model; a relatively small portion of our hiring is through recruitment agencies. Worldpay does not accept resumes from recruitment agencies which are not on the preferred supplier list and is not responsible for any related fees for resumes submitted to job postings, our employees, or any other part of our company.

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