Carlos Vara

Senior Full Stack & AI Engineer, Confidential Insurtech Client

2026 – Present

Full stack support for a non-disclosed insurtech client's core platform, leading the adoption of AI-assisted engineering across the ticket-to-deployment workflow.

• Deliver full stack features across a Python/Flask REST API, PostgreSQL (SQLAlchemy), Celery workers, and gRPC / Protocol Buffers service contracts.
• Build React and TypeScript frontends in an Nx monorepo consuming GraphQL through a Backend-for-Frontend (BFF) layer.
• Ship containerized services with Docker, Kubernetes, and CI/CD under a strict change-management process.
• Designed agentic programming workflows with Claude Code, Cursor, and GitHub Copilot that turn tickets and acceptance criteria into implementation plans, code changes, test plans, and test evidence, reducing documentation and validation effort by an estimated 30%.
• Authored reusable agent instructions (AGENTS.md / CLAUDE.md, rules, slash commands, and skills) that encode team coding standards and phased workflows with explicit review gates.

Lead Software Engineer, Tensure

2025 – Present

Embedded engineer on Intuit's Mailchimp, delivering high-velocity experimentation and customer retention initiatives, plus Webflow and cloud engineering support.

• Design and implement A/B tests and stealth experiments within a large PHP/Node.js monolith and React frontend to measure the impact on churn reduction and user growth.
• Translate product hypotheses into production-ready code using React, Vanilla JavaScript/TypeScript, and PHP.
• Provide cloud solutions and deployments on Google Cloud Platform (GCP).
• Deliver Webflow CMS and custom component work for the company website.

Lead Developer, Cognizant

2021 – 2025

Led a team of 4 developers in the migration and modernization of a major client's eCommerce platform through micro front-end architecture and server-side technologies.

• Developed micro front-ends using React, integrated with CMS (Drupal), for +20 brands in around 150 countries.
• Spearheaded platform migration to a server-side rendering (SSR) stack with Node.js, Elixir, Phoenix, and Storyblok, improving page load times by 30%.
• Designed global reusable components for a design library with localization and brand-adaptive styling using React, WebComponents and design tokens.

Full Stack Developer, Density Labs

2020 – 2021

Developed and maintained a B2B platform for real estate, enhancing contract management and data visualization for brokers.

Backend Developer, Robert Bosch

2019 – 2020

Restructured an internal e-Learning application and developed a B2B industrial inventory management platform with mobile support.