Position Summary: TechSur is seeking a Solution Architect to design the target architecture for EXIM Online modernization, transforming a legacy Java/J2EE monolith into a secure, scalable, AWS-based microservices platform. This role will lead architecture decisions across domain decomposition, APIs, integrations, security, data ownership, observability, resiliency, and legacy coexistence. Key Responsibilities Define the target microservices architecture for EOL, including domain-aligned services, APIs, synchronous and asynchronous communication, security boundaries, data ownership, and integration patterns. Lead service decomposition planning for legacy Java/J2EE workflows, database objects, stored procedures, integrations, batch jobs, and business rules. Design AWS-based reference architectures supporting DEV, SQT, UAT, PROD, and COOP environments with account segmentation, VPC design, security guardrails, and high availability. Coordinate architecture approval with EXIM technical, business, cybersecurity, O&M, and downstream system stakeholders. Develop architecture diagrams, integration diagrams, data flow diagrams, API standards, service design patterns, and modernization sequencing plans. Ensure architecture aligns with EO 14028, Zero Trust, NIST SSDF, cATO, DevSecOps, and federal cloud security expectations.