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WTS Paradigm, LLC

Principal Software Architect – Back End

WTS Paradigm, LLC, West Middleton, Wisconsin, United States

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Paradigm is a software company transforming the way that the residential, construction & building product industries operate across the globe. We are looking for a Principal Software Architect – Back End to be part of revolutionizing these industries. In this role, you will lead back-end architecture and complete solution design for enterprise software applications, with responsibility for distributed systems strategy, microservices design, and large-scale re-architecture initiatives. You will drive architectural decisions that balance scalability, performance, and integration requirements across complex system landscapes. What You Will Do

Own back-end architecture strategy for enterprise software applications, designing solutions that span APIs, microservices, data architecture, and system integration patterns. Architect agent orchestration systems, RAG infrastructure, and AI service integration patterns at scale. Lead large-scale re-architecture initiatives, modernizing legacy systems while ensuring business continuity and phased migration strategies. Design distributed systems architecture including service decomposition, inter-service communication, event-driven patterns, and data consistency approaches. Establish back-end architectural standards, API design patterns, and integration frameworks while maintaining holistic view of end-to-end solution quality. Lead complete solution design for platform initiatives, ensuring back-end architecture aligns with front-end needs, security requirements, and operational concerns. Participate in cross-functional architecture reviews, representing back-end perspective within broader solution design discussions. Evaluate and guide technology selection for back-end frameworks, databases, messaging systems, and cloud infrastructure. Mentor engineering teams on microservices best practices, distributed systems patterns, and scalable architecture within the context of complete solution delivery. What You Need to Succeed

10+ years of software development experience with 6+ years in architectural leadership roles (subject or people leadership). Deep expertise in distributed systems, microservices architecture, and back-end technologies at scale. Proven track record leading large-scale re-architecture initiatives and platform modernization efforts. Full-stack experience with understanding of front-end, API design, and complete solution integration. Strong knowledge of API design patterns, data architecture, event-driven systems, and enterprise integration. Experience with architectural governance, technical documentation, and cross-team design reviews. Excellent communication skills for articulating complex back-end decisions within broader architectural context.

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