Software Engineer II

For nearly 40 years, PDI has helped convenience retailers and petroleum wholesalers adapt to changes in the industry by leveraging the latest technologies. Simplifying the complexity in your world is our main focus. That’s why we’re delivering an integrated portfolio of global, cloud-based solutions and services to meet our customers’ needs today and well into the future. From the back office to fuel logistics, and the latest wave of consumer demands and digital commerce, PDI solutions and services are designed to give you a competitive edge. Our deep domain knowledge is backed by our industry-specific software offerings and a people-first approach. Serving the entire supply chain means that we’ve had to solve a wide range of industry challenges and deliver measurable value. To address the increasingly dynamic convenience retail and petroleum wholesale industry, PDI leads the way with converged digital, cloud-optimized, secure, and scalable solutions including ERP, Loyalty, Fuel Pricing, Point-of-Sale and Logistics to create a broader industry ecosystem. The result is unparalleled insights, simplified operations, and higher profitability for your employees and business. We’re dedicated to helping our more than 1,500 customers in over 50 countries, providing solutions and services to over 200,000 sites.

Job Responsibilities:

AI-Powered POS, EPS & Forecourt Development: Build intelligent systems across Point of Sale, Electronic Payment Systems, and Forecourt management using C# and .NET, incorporating real-time analytics, payment integration, inventory intelligence, and multi-step automation workflows for retail, hospitality, and fuel environments.

Product Innovation & AI Integration: Develop next-generation ASP.NET Core platforms with generative AI features including predictive pump management, fraud detection, and forecourt monitoring optimized for performance, UX, and safety compliance.

Intelligent System Architecture: Leverage LLMs and multimodal models within .NET service architectures using SignalR for real-time features and Entity Framework Core for data access, delivering context-aware experiences across POS, EPS, and forecourt domains.

Payment & Forecourt Integration: Develop and maintain integrations with payment terminals (ISO 8583, EMV, NFC) and forecourt controllers (Gilbarco, Wayne) using IFSF, OPT, and serial/TCP protocols, ensuring end-to-end PCI-DSS, compliance and reliable pump authorization workflows.

Backend API & Cloud Deployment: Design RESTful and event-driven APIs using ASP.NET Core Web API; deploy and maintain .NET applications on Azure using Docker, CI/CD pipelines, and observability tooling for high-availability transactional workloads.

Testing, UI & Cross-Functional Collaboration: Write automated tests (xUnit/NUnit/MSTest) and contribute to agent evaluation frameworks; build UI components using React as needed; work closely with product, UX, and operations teams to translate workflows into production-ready solutions.

Job Requirements:

Core Experience: 3-5 years of professional software engineering with demonstrated ownership in production systems; experience in transactional, high-availability, retail, payment, or forecourt environments is a strong plus.

C# & .NET Stack: Strong proficiency in C#, ASP.NET Core, Web API, Entity Framework Core, LINQ, dependency injection, and NuGet package management.

Payment & Forecourt Protocols: Familiarity with ISO 8583, EMV, NFC, and PCI-DSS compliance; familiarity with forecourt integration (IFSF, OPT, pump authorization) and serial/TCP communication protocols is recommended.

Agentic Systems Mastery: Proven hands-on experience building intelligent, automation-driven systems across any platform/product including workflow orchestration for multi-step transactions.

AI & Backend Integration: Hands-on experience integrating LLMs or AI services into backend systems, including prompt engineering, RAG, and automation workflows

Data & Vector Technologies: Familiarity with vector databases, embeddings, recommendation systems, and data pipelines for customer behavior analytics and product intelligence

Cloud & DevOps: Experience deploying .NET applications to AWS with Docker, CI/CD pipelines, and observability tooling.

Web APIs & Real-Time Communication: Experience building scalable APIs with RESTful design, authentication patter…