Juan Lopez

Owned full-stack architecture for SaaS platforms: selected and implemented frontends, backends, databases, authentication, admin tools, REST APIs, testing, deployment, and documentation. Built rules-based calculation and pricing engines by converting rating tables, rating factors, and eligibility criteria into structured, validated data, then connected results to quotation and comparison journeys. Implemented CRM workflows including lead capture, customer records, notifications, and automated communications via third-party API integrations. Used AI-assisted coding tools with a production-first workflow (reviewed, tested, maintainable code) and supported phased delivery planning with founders.

Built and maintained data-driven web applications using TypeScript, Node.js, and PostgreSQL while independently extending an existing larger codebase. Designed REST APIs and webhook integrations with external providers and payment services. Implemented database migrations, performance optimizations, and automated tests. Collaborated in Agile/Scrum with code reviews and clear status updates.

Contributed to Platform Insights, an in-house data platform working with large-scale datasets, including data pipelines and API integrations. Designed and implemented RESTful APIs with FastAPI for frontend and third-party integrations. Built dashboards and reporting components and optimized frontend performance. Maintained rigorous automated testing across unit, integration, and end-to-end layers.