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Senior System Architect
Senior System ArchitectChief of Staff KC • Kansas City, MO, US
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Senior System Architect

Senior System Architect

Chief of Staff KC • Kansas City, MO, US
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  • [job_card.full_time]
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A rapidly growing organization is seeking a high-level Senior System Architect / Senior PHP Developer to guide modernization of a large legacy platform, mentor a young development team, and shape the technical foundation for the company's next phase of growth—including upcoming AI-driven initiatives.

The organization operates in a collaborative, flat leadership environment where developers work closely with founders and cross-functional leaders. This role requires someone who is opinionated yet pragmatic—someone who can make strong technical decisions, communicate the "why," and build alignment across teams.

About the Team & Culture

  • Highly collaborative development team with open communication, active coaching, and shared ownership.
  • Leadership is accessible, non-hierarchical, and moves quickly.
  • Strong emphasis on mentorship, humility, servant leadership, and practical innovation.
  • Developers work hands-on with product, leadership, and operations teams to support rapid business growth.
  • The environment is sales-led and fast-paced, requiring autonomy, accountability, and a balance of innovation + business awareness.
  • All software development is done internally—no outsourcing—so this role provides direct impact on product direction and quality.

Primary Responsibilities

Architecture & System Design

  • Define system architecture patterns, code structure, and engineering standards.
  • Lead modernization of a legacy PHP codebase into modular, scalable, and maintainable architecture.
  • Collaborate with system leads to document and guide best practices across the platform.
  • Understand and balance technical debt, scalability needs, and business-driven priorities.

    • Cloud Infrastructure & DevOps

  • Own AWS architecture, hosting, security, and environment management.
  • Manage CI / CD pipelines, deployments, and infrastructure tooling (e.g., Jenkins, Docker).
  • Ensure reliability, performance, and efficient deployments across environments.

    • Technical Leadership & Mentorship

  • Act as a mentor for a young development team.
  • Provide code guidance, coaching, and architectural reasoning to help engineers grow.
  • Transfer knowledge formerly held by the prior architect and maintain continuity of system understanding.
  • Support QA teams by sharing context and collaborating on quality improvements.

    • Cross-Functional Collaboration

  • Communicate technical decisions to non-technical leadership with clarity and rationale.
  • Contribute to prioritizing technical debt, stabilization tasks, and roadmap initiatives.
  • Work closely with founders, product leadership, and operational teams.
  • Help "sell" architectural and modernization strategies internally to ensure alignment.

    • Required Skills & Experience

  • 10+ years of experience building large-scale web applications (flexible for exceptional candidates with strong PHP modernization experience).
  • Deep experience with PHP, large active codebases, and legacy system modernization.
  • Strong full-stack expertise across PHP, SQL, and JavaScript frameworks (Vue preferred).
  • Proven AWS experience (hosting, storage, Lambdas, security, automation).
  • Solid DevOps background with CI / CD pipelines and containerization (Jenkins, Docker, etc.).
  • Strong architectural mindset : understands both the technical and business implications of decisions.
  • Comfortable in fast-paced environments with shifting priorities.
  • Experience building consensus, justifying technical choices, and aligning teams.
  • Passion for mentorship, coaching, and elevating overall team capability.
  • Interest in AI-related initiatives and how they impact architecture and product evolution.

    • Preferred Traits

  • Opinionated but pragmatic—able to justify decisions and adapt when needed.
  • Excited by system redesign, modernization, and scaling architecture.
  • Comfortable working directly with founders and senior leadership.
  • Low ego, collaborative, and committed to knowledge sharing.
  • Energized by building internal tools with real-world business use cases.
  • Open to AI innovation and creatively exploring new technologies.
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