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Principal Architect (Pleasanton)
Principal Architect (Pleasanton)CriticalRiver Inc. • Pleasanton, CA, US
Principal Architect (Pleasanton)

Principal Architect (Pleasanton)

CriticalRiver Inc. • Pleasanton, CA, US
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  • [job_card.part_time]
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Summary :

Were hiring an exceptional Principal Architect to lead the ground-up design and build of our next-generation, multi-tenant SaaS platform for AI-powered financial intelligence and workflow automation. This is a true greenfield opportunity : architect, build, and launch a production-ready platform.

Responsibilities :

  • Own platform architecture end-to-end, including tech stack selection, multi-tenant design, auth systems, data architecture, and service topology.
  • Lead the intelligence layer : LangGraph agent system, LLM integration strategy, and contextual intelligence design.
  • Contribute high-impact code, drive engineering excellence, and accelerate execution velocity.
  • Ensure infrastructure, security, reliability, and DevOps readiness.

Requirements :

  • 12+ years of software engineering experience, including 5+ years in architect roles
  • Proven success in architecting and launching greenfield multi-tenant SaaS platforms
  • Product development experience with aggressive timelines
  • Expertise across frontend, backend, data, and cloud infrastructure (AWS preferred)
  • Strong experience with EKS / ECS, PostgreSQL, enterprise authentication, and high-performance systems
  • AI / LLM architecture experience : LangGraph / LangChain, agent-based systems, OpenAI / Anthropic integrations
  • Strong technical leadership and communication skills

    • Good to have :

    Financial services experience, startup / rapid growth background, security / compliance expertise, and cost optimization skills.

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