Solution Architect

Why Karsun? Join Karsun Solutions to grow your career with the company transforming possible for the US Government. At Karsun, collaboration drives our community. We're committed to building an environment where team members from diverse backgrounds can innovate, learn and grow with us. Here at Karsun, the only limit to your potential is the limit of your curiosity. Join Team Karsun, and Find Your Next! Summary We are seeking an experienced Solution Architect with deep expertise in application modernization, cloud-native architecture, and modern software development practices. This role serves as the technical visionary and hands-on architect who will create compelling end-state software design and architectures, build consensus across diverse stakeholder groups. The ideal candidate is a seasoned technologist who balances strategic thinking with hands-on technical capabilities, can evangelize modern development practices including AI-assisted development tools, and excels at translating complex technical concepts for both business and technical audiences. You will collaborate closely with the Lead Solution Architect, data and platform architects, and business SMEs to deliver transformative outcomes for our customers. What You'll Be Doing: Define and articulate the technical vision and multi-year roadmap for application modernization, creating compelling end-state architectures that gain buy-in from customer IT leadership, business stakeholders, and technical teams. Lead the design and implementation of modern, cloud-native application architectures leveraging microservices, API-first design, event-driven patterns, and containerization to replace legacy monolithic systems. Drive consensus across cross-functional teams including application architects, data and platform architects, business SMEs, development teams, and IT stakeholders to align technical solutions with business outcomes. Provide hands-on technical leadership by writing code, building proof-of-concepts, developing prototypes, and conducting technical demonstrations to validate architectural decisions and accelerate modernization initiatives. Champion and demonstrate the adoption of AI-assisted development tools such as GitHub Copilot to improve SDLC productivity, code quality, and developer experience across Agile development teams. Lead technology evaluation and selection processes for application frameworks, development platforms, API gateways, integration tools, and supporting infrastructure aligned with customer IT standards and federal requirements. Design comprehensive API strategies and integration architectures to enable seamless connectivity between the application and agency's acquisition ecosystem, including upstream and downstream systems. Establish and enforce security architecture principles and patterns ensuring federal security requirements (FISMA, FedRAMP, NIST), implements zero-trust principles, and maintains robust security posture. Partner with SRE managers to architect DevSecOps pipelines, CI/CD automation, infrastructure-as-code patterns, and observability solutions that enable continuous delivery and operational excellence. Facilitate architecture governance through design reviews, technical spikes, architecture decision records (ADRs), and collaborative sessions that guide development teams while maintaining architectural integrity. Present technical strategies, architecture proposals, and modernization roadmaps to customer IT leadership, acquisition business function leaders, and executive stakeholders, translating technical complexity into business value. Mentor and develop architects and senior technical staff, fostering a culture of technical excellence, innovation, and continuous learn