// senior backend engineer

Alfredo Guzmán

10+ years solving hard backend problems across very different industries. I learn the domain fast, own the architecture and ship it to production — whether that's moving money through banking integrations, optimizing fleet routes, controlling drones in real time or putting AI to work on company knowledge.

Get in touch → GitHub ↗
10+
years shipping software
5
companies, from startups to Indra
MSc
IT Management

01 About

Software engineer with over a decade building backend and full‑stack platforms. I specialize in microservice architectures with Node.js and NestJS, TypeScript and PHP (Laravel, Yii2), with production experience in pensions & fintech, fleet route optimization, real‑time drone control and AI‑powered document retrieval.

I've built banking integrations that automate payment distribution, designed internal APIs that unified services across teams, and taken products from architecture to production in collaborative environments.

02 Experience

  1. 2022 — 2026

    Expert Backend Developer @ Zenta Group

    • Built and maintained a pension management platform for users in Chile on a Node.js / NestJS microservice architecture.
    • Integrated the platform with Banco Santander to automate payment distribution, eliminating manual processing of the payment cycle.
    • Tech lead of an AI chatbot for Microsoft Teams that answers natural‑language questions over hundreds of internal PDF documents — from design to production.
    • Tech lead of a route optimization engine (VRP) for a Mexican corporate transport operator, computing optimal bus routes over hundreds of pickup points under capacity, time and distance constraints.
    • Replaced commercial map APIs with self‑hosted routing and geocoding, cutting third‑party costs and removing per‑request usage limits.
    • Tech Lead
    • Node.js
    • NestJS
    • TypeScript
    • Microservices
    • LLM
    • VRP

  2. 2022 — 2023

    Software Engineer II @ Indra

    • Developed a real‑time aerial drone control system, handling live telemetry and operator monitoring.
    • Node.js
    • NestJS
    • C++
    • React
    • Real‑time

  3. 2021 — 2022

    Software Development Engineer @ Amotor S.A

    • Developed inventory management features and internal REST APIs, integrating the platform with third‑party APIs.
    • Unified fragmented internal services into a consistent, maintainable architecture.
    • PHP
    • Laravel
    • Yii2
    • REST

  4. 2021

    Full Stack Developer @ Tecclas, Inc

    • Built a real‑time video conferencing system; integrated external APIs and developed multi‑level management software.
    • Node.js
    • React
    • PHP

  5. 2015 — 2020

    Full Stack Developer @ Marketing LT

    • Delivered custom educational platforms, a social network built from scratch and multi‑level management software for contract clients.

03 Stack

Languages
TypeScript · JavaScript · PHP · Python · Java · C++
Backend
Node.js · NestJS · Express · Laravel · Yii2 · Microservices · REST API design · Third‑party integrations
Frontend
React · Vue.js · React Native
Infra & data
AWS · Docker · MongoDB · Git · CI/CD
Domains
LLM / AI document search · Route optimization (VRP) · Real‑time systems · Chatbots (MS Teams) · Fintech

04 Side projects

05 Education

  • 2021 — 2023

    MSc, Information Technology Management

    Universidad Cooperativa de Colombia

  • 2014

    B.Eng., Systems Engineering

    Universidad de Pamplona

  • Languages

    Spanish native · English

06 Contact

Have a backend challenge, a role or a project in mind? Drop me a line — I usually reply within a couple of days.