Jonathan Rinciari

Amazon

Technical lead for customer-facing architecture across web, mobile, and AWS Console experiences for residential, enterprise, and SMB customers in a global launch context.

• Designed cross-system integration architecture: Connected a new global customer experience to Amazon discovery flows across 23 marketplaces, coordinating alignment across 5+ organizations without direct authority.
• Founded and scaled an org-wide performance program: Shifted performance from reactive tuning to governed-by-default through standards, monitoring, release gates, and working-group mechanisms across 200+ engineers and 25+ services.
• Drove material customer-path performance gains: Delivered up to 5x checkout improvement and 10.5x faster address resolution through shared metrics, alarms, regression-prevention workflows, and enforcement mechanisms that scaled beyond individual contributors.
• Authored frontend technical strategy: Set direction for authentication, payments, internationalization, CI/CD, UX consistency, and cross-team integration across web, mobile, and console surfaces.
• Architected a microfrontend platform: Enabled 6+ teams and 11 microfrontends to ship independently through shared tooling, ownership models, onboarding guides, and compatibility validation; reduced onboarding from weeks to days.
• Led secure payments and authentication design: Built reusable auth patterns for AWS Console customer experiences, including OAuth 2.0 with PKCE, encrypted sessions, and CSRF protections.
• Designed production AI systems: Created a multi-stage orchestration pipeline for test-plan generation and a provenance-aware knowledge graph for deterministic retrieval and reviewability.

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Amazon

• Led embedding customization strategy: Directed an initiative across 6 engineers, identified 15 high-value opportunities, and influenced prioritization of the top 10 on the roadmap.
• Reduced embedded analytics latency 28%: Introduced systematic performance analysis, sandbox testing, and canary-based measurement frameworks later adopted by adjacent teams.
• Increased automated test coverage 73%: Improved delivery safety and confidence across regions and stages.
• Built reusable performance and quality mechanisms: Extended beyond the immediate team and improved the reliability of embedded customer experiences.

Amazon

• Led launch-critical console architecture: Drove frontend architecture and delivery for new AWS IoT console experiences under compressed timelines and evolving backend dependencies.
• Standardized canary and operational-readiness patterns: Scaled reusable monitoring mechanisms across 9+ teams to improve launch safety.
• Built reusable parsing and query abstractions: Reduced duplication and improved consistency across services and teams.

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Amazon

• Modernized console platform architecture: Contributed platform patterns that improved build speed, deployment speed, and local developer feedback loops.
• Improved engineering velocity: Reduced build times 45%, improved local feedback-loop speed 90%, and cut deployment time 70% through tooling and platform modernization.
• Introduced reusable operational tooling: Improved development velocity, testing, and launch readiness.

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Built reusable UI components and improved large-catalog rendering performance for a high-traffic e-commerce experience.

Led full-stack product development for a fintech startup, shaping early product direction, hiring, and technical execution.

Built mobile and web product experiences, including cross-platform app work and AWS-backed services.

Contributed to internal tooling, engineering productivity, and test modernization.