Principal Software Engineer (.NET)

Expert proficiency in C#, .NET Core/.NET 8+, Angular 15+ , ASP.NET Core, Entity Framework, Ngnix and REST & SOAP APIs .

Deep expertise in Microservices, Distributed Systems, Event-Driven Architecture, and Domain-Driven Design .

Strong experience with AWS(preferred),Azure , Docker, Kubernetes, and CI/CD pipelines.

Infrastructure understanding – E2E request flow , Load-balancer , Akamai , firewalls , SAML

QA automation Practices and tools usages – like Selenium , playwright , AI based tools

Experience with RabbitMQ , MSMQ , SQL Server.

Strong understanding of performance optimization, scalability, resiliency, and application security.

Experience integrating Generative AI, AI/ML, LLMs, RAG, or AI-powered capabilities into enterprise applications.

Knowledge of AI development tools and modern software engineering productivity platforms.

Ability to identify and drive AI initiatives that improve customer experience, operational efficiency, and product innovation.

A hands-on Principal Engineer with expertise in .NET, Cloud, Microservices, Distributed Systems, and AI technologies , capable of shaping technical strategy while delivering highly scalable, secure, and mission-critical enterprise solutions.

We seek colleagues who embody our core capabilities — these shape our culture and enable us to make a meaningful impact together:

Ensure Accountability: holding self and others accountable to meet commitments.

Drives Results: consistently achieving results, even under tough circumstances.

Customer Focus: building strong customer relationships and delivering customer-centric solutions.

Cultivate Innovation: creating new and better ways for the organization to be successful.

Collaborates: building partnerships and working collaboratively with others.

Courage: stepping up to address difficult issues, saying what needs to be said.

In return for your expertise, we offer opportunities for growth, career development, and a competitive compensation and benefits package—all within an innovative and collaborative work environment.

Are you ready to help us transform the payments ecosystem? To learn more about ACI Worldwide, visit our web site at www.aciworldwide.com

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