Senior Backend Developer / Integration SpecialistLocation: Dauphin County - PA (only locals) Client: State OF PA Focus: Digital Payments, Tolling Integrations, SAP, Microsoft Dynamics, Azure, IVR, Cloud Native SystemsKey Responsibilities:Integrate SAP S/4HANA, BRIM, Microsoft Dynamics 365, Azure Cloud, IVR, mobile apps, middleware, payment systems.Design and maintain backend services in GoLang &.Net.Build APIs, microservices, and containerized deployments (Docker/Kubernetes).Lead CI/CD, code reviews, and performance optimization.Architect secure, scalable payment systems with PCI DSS compliance.Mentor teams and ensure best practices in cloud-native architectures.Design integrations for tolling projects: payment gateways, traffic systems, document management, cloud hosting.Implement monitoring, risk mitigation, and fraud prevention strategies.Fully document all technical work (designs, test plans, diagrams, reports).Minimum Requirements:8+ years senior development/integration experience (SAP, Dynamics, Azure, IVR).5+ years payment processing applications (digital payments, compliance).3+ years backend with GoLang.3+ years backend with.Net.Strong REST API / microservices expertise.Containerization: Docker, Kubernetes.Cloud platforms: Azure (preferred), AWS, or GCP.Hands-on with ADO, Git, CI/CD pipelines.Performance optimization in Go &.Net.Contact center modernization or high-volume integration projects.Desired Skills:Message queues: Kafka, RabbitMQ.Monitoring: Prometheus, Grafana.Infra-as-Code: Terraform, Helm.IVR systems design & optimization (preferably tolling).Azure Government Cloud expertise (IaaS, PaaS, SaaS).Knowledge of ITIL/ITSM practices.Familiarity with tolling industry standards.Degree in CS/Engineering (Master’s preferred).