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sam User

@samuser59

Software engineer at Ensamble building enterprise platforms and Kairo Runtime, an open-source AI task-routing control plane.

Mexico

Message

What I'm looking for

I'm open to remote work in Mexico or internationally, and to relocation.

At Ensamble Administrador de Riesgos y Sistemas, I led frontend architecture and delivery for enterprise insurance and operations products. I built reusable React and Next.js modules, API service layers, and authentication flows, and improved frontend performance by approximately 30%.

I also reduced feature delivery time by approximately 30% through shared patterns, documentation, code review, and cross-functional engineering guidance. My work connected REST services with SQL Server-backed operational processes.

I created and maintain Kairo Runtime, an open-source Node.js CLI and MCP control plane that routes AI engineering tasks across Claude Code, Codex, and OpenCode using capability, quota, and cost signals. I’ve also engineered AI conversation-to-action workflows integrating Next.js, Node.js, PostgreSQL, and external services.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer / Frontend Lead

Current

Ensamble Administrador de Riesgos y Sistemas

Sep 2021 - Present (5 years 2 months)

Led frontend architecture and delivery for enterprise insurance and operations products, including sales-enablement dashboards and agent workflows. Improved frontend performance by approximately 30% and reduced feature delivery time by approximately 30% through shared patterns and code review.

React Next.js TypeScript REST APIs SQL Server Authentication Performance Optimization Code Review Agile Scrum

Frontend Software Engineer

Lumston

Jan 2025 - Dec 2025 (11 months)

Shipped features in an established React/Vite/TypeScript enterprise codebase using Material UI and reusable component patterns. Contributed to authentication flows, REST integrations, and Vitest coverage for critical UI behavior.

React Vite TypeScript Material UI REST APIs Vitest Authentication

Flutter Developer

Lemu

Jan 2022 - Dec 2022 (11 months)

Developed Flutter/Dart experiences connected to Node.js/GraphQL services for an environmental technology platform, collaborating on product requirements and delivery.

Flutter Dart NodeJS GraphQL

Junior Frontend Developer

Grupo KC

Dec 2020 - Jul 2022 (1 year 7 months)

Built React interfaces for dashboards, forms, and operational processes connected to REST APIs and SQL Server. Introduced reusable components to reduce duplicated UI logic.

React REST APIs SQL Server Reusable Components