← BackAbout · Backend & AI Engineer · Santa Marta, Colombia

Andrés Navarro Gómez

Andrés Navarro · Andres Navarro · andresnavarro

Systems engineer in Santa Marta, Colombia, with 5+ years building backends, APIs, and SaaS platforms in production (Node.js, Python, TypeScript, Flutter). I have worked remotely with teams across Colombia, Mexico, the United States, Chile, and France. In recent years I have focused on applied AI: LLM agents, orchestration, real-time voice, and automation. The most visible case is Rembrr: I designed and built its voice and agent backend, now on the App Store.

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Experience

Rembrr

Sept 2025 – Present · United States · Remote
  • Designed and built the real-time voice and agent backend of a conversational multi-service platform (Python/FastAPI); the Flutter mobile app is owned by the rest of the team.
  • Real-time voice on Gemini Multimodal Live: intercepting and dispatching the model's tool calls to user integrations (Gmail, Google Calendar, Drive, tasks) and webhooks.
  • Isolated search sub-agent returning cited answers, working around Gemini's limitation of not mixing search with function calling.
  • Long-term memory (RAG): embeddings over pgvector with hybrid ranking and background fact extraction, off the request path.
  • Envelope encryption (KEK/DEK, AES-256-GCM) of tokens and sensitive data with GCP Cloud KMS; CI/CD on Cloud Run.

Masu SaaS

Feb 2025 – Nov 2025 · Mexico · Remote
  • Multi-tenant architectures in PostgreSQL and NestJS with data isolation and high availability.
  • REST APIs and distributed services with Node.js, TypeScript, and TypeORM; SQS queues and workers for concurrent processing.
  • Backend–RPA integration: automation between NestJS and a Python bot for remote execution in a VPN-protected ERP.

Imaginamos SAS

Jun 2022 – Feb 2025 · Colombia · Remote
  • Scalable backend services with Node.js, TypeScript, and NestJS following SOLID principles and design patterns.
  • REST, SOAP, and GraphQL APIs; +40% interoperability between internal and external systems.
  • Third-party integrations: Twilio, Meta (WhatsApp), BePay, PayPal. Event-based microservices on AWS.

Seed Academy

Jul 2023 – Sept 2023 · United States · Remote
  • Web services with TypeScript, Node.js, Express, and MongoDB under Clean Code.
  • Internal libraries for file conversion and automation; +30% in data processing.

Octetus SAS

Jul 2021 – Apr 2022 · Chile · Remote
  • Custom plugins for the Chilean Ministry of Culture CMS with Python, Django, PostgreSQL, and ElasticSearch.
  • Government API integration for interoperability between public systems.

Tous Secouristes

Jan 2021 – Jun 2021 · France · Remote
  • Course management platform with GraphQL, Next.js, TypeScript, and ReactJS.
  • Payment gateways (PayPal, Stripe) with international compliance.

Stack

AI & Agents
Gemini Multimodal Live, OpenAI API, LLM agents, RAG, prompt engineering, n8n
Backend & APIs
Python (FastAPI, Flask, Django), Node.js, TypeScript, NestJS, Express, REST, GraphQL, SOAP, WebSockets, PostgreSQL, MongoDB
Cloud & DevOps
GCP (Cloud Run, Cloud Build, Artifact Registry), AWS (EC2, S3, RDS, Elastic Beanstalk, CodePipeline), Docker, CI/CD, Supabase
Mobile & Frontend
Flutter (iOS/Android), React, Next.js, Astro

Education

Systems Engineering — Universidad del Magdalena, Santa Marta (2017–2022). Recognition for outstanding performance in Software Design (Saber Pro national exams).