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Francisco López

@franciscolpez2

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Senior Backend Lead Engineer at Habi, evolved its lead-qualification chatbot into a multi-agent system.

Colombia

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At Habi, I led the GenAI team in evolving a basic chatbot into a production-grade multi-agent system that acquires, filters, and qualifies real estate leads. The system handles 4,000 leads daily and contributed to a 20% lift in appointment booking rates.

I served as principal architect of a hierarchical multi-agent system with reactive tool usage and feedback loops. I worked with Product and Customer Success to refine conversational UX.

At Morado, I managed a cross-functional tech team and led a migration from monolith to microservices with CI/CD in under six months. Infrastructure optimization reduced AWS costs by 40%, and I also led development of warehouse management and e-commerce fulfillment workflows.

At Treinta, I built microservices for authentication, payments, and transactions to support 5M+ active users. I also created NestJS Doctor, an open-source CLI and developer toolkit for analyzing NestJS applications, with static-analysis rules, graph tooling, an LSP server, and editor integrations.

Experience

Work history, roles, and key accomplishments

Current

Senior Backend Lead Engineer

Current

Habi

Jul 2024 - Present (2 years 4 months)

Led the GenAI team in acquiring, filtering, and qualifying 4,000 real estate leads daily, evolving the system from a basic chatbot to a production-grade multi-agent architecture. Partnered with Product and Customer Success teams to refine conversational UX, resulting in a 20% lift in appointment booking rates.

TypeScript NestJS Python Lang Chain LangGraph Langsmith AI Orchestration Multi Agent Systems Chain of Thought Reasoning Observability

Tech Manager

Morado

Feb 2023 - Jul 2024 (1 year 5 months)

Managed a cross-functional tech team and led the migration from a monolithic architecture to microservices with full CI/CD pipelines, reducing AWS costs by 40%. Oversaw development of warehouse management and e-commerce fulfillment workflows.

NodeJS TypeScript NestJS Microservices CI CD AWS Docker Redis Kafka PostgreSQL DynamoDB Team Management

Senior Backend Developer

Treinta

Sep 2021 - Feb 2023 (1 year 5 months)

Built microservices architecture from the ground up to support 5M+ active users, including authentication, payments, and transaction systems. Led performance tuning and cost optimization initiatives, reducing API response times by 30%.

NodeJS TypeScript NestJS JWT PostgreSQL SQL AWS EC2 Lambda Docker Redis Datadog Microservices

Backend Developer

Rappi

Jun 2020 - Sep 2021 (1 year 3 months)

Contributed to the core order assignment engine handling 300,000 daily orders across a fleet of 6 microservices. Built and optimized a real-time dispatch engine using geospatial data and K-means clustering.

NodeJS JavaScript Kafka AWS Clean Architecture CI CD Datadog Geospatial Data KMeans Clustering

Full Stack Developer

Tinkor

Feb 2018 - Jul 2020 (2 years 5 months)

Designed, developed, and maintained full-stack web platforms and secure RESTful APIs using modern JavaScript/Node.js stacks. Managed deployment, monitoring, and maintenance of production applications on Linux servers.