SageCor Solutions is seeking a Software Engineer 3 with a focus on backend and cloud-native applications, serving Maryland and the Greater Washington D.C. area. This role requires active TS/SCI with Polygraph clearance. Responsibilities include hardware and software integration, infrastructure provisioning, and cloud-native development using technologies like Kubernetes, Go, and Docker. The engineer will also work with frontends using TypeScript, HTML, and CSS, and implement event-driven architectures with message brokers like Kafka. Strong system design, RESTful API, microservices, SQL integration, debugging, problem-solving, and communication skills are essential. Familiarity with Agile, CI/CD, and Linux/UNIX administration is preferred.