Hello

I'm Andrés Venegas

Web Architect, Cloud Engineer, Backend Lead, Team Leader

I help startups and companies build, scale and improve their software. I design the architecture, lead the team and write the code, from the first version to systems that cannot afford to go down. 10+ years of experience

Querétaro, México · Available Remotely

About

Who I Am

I lead technology teams and design the systems they build. For more than 10 years I have taken products from a blank page to production in startups, SaaS platforms and enterprise environments, owning the backend architecture, the cloud infrastructure and the delivery.

Today I am Web and Cloud Architect and backend tech lead at Kata Software, where I define the architecture of its fintech products and run microservices on Azure with Kubernetes. I set the technical direction, mentor engineers and stay close to the code.

I also lead the architecture and development of SaaS products such as Kalista, a management platform for aesthetic clinics, and EarnPath, net-earnings tracking for independent contractors in the US. And I build my own: Tallerly, an operating system for auto repair shops, and Vellet, clients, quotes and payments for freelancers.

My strongest tools are Node.js/TypeScript and C#/.NET, but I pick the technology to fit the product. I live in Querétaro, México and work remotely. Whether you are a startup that needs its first version or a company whose systems need to get better, I can design the architecture, lead the team and still ship code. Let's talk.

Years of Experience
10+
SaaS Products
4
Products Shipped
6+
Engineers Led
5

Services

How I Can Help

  • Build Your Product

    From the idea to production: web, mobile and backend. I define the scope with you, design the architecture and deliver a first version that real users can use and that is ready to grow.

  • Improve Existing Systems

    Slow, fragile or hard to change? I review the code and the architecture, tell you what is worth fixing first and modernize it step by step, while the system keeps running.

  • Technical Leadership

    A tech lead or architect for your team without a full-time hire. I set the technical direction, review code, mentor engineers and answer for the delivery.

  • Architecture & Backend

    APIs, microservices and data models designed to scale and to stay maintainable. Node.js/TypeScript or C#/.NET with PostgreSQL, MongoDB or SQL Server, chosen for what the product needs.

  • Cloud & DevOps

    CI/CD pipelines and containerized deployments on Azure or on your own servers, with Docker and Kubernetes. Releases that are repeatable and infrastructure sized to what you actually use.

  • Web & Mobile Apps

    Fast, clean interfaces with React, Next.js and Angular, and cross-platform apps with React Native and Flutter: from landing pages to complex dashboards.

Process

How I Work

  1. Diagnosis

    A first call to understand your business, the problem you want to solve and the constraints we have to respect.

  2. Proposal

    Scope, architecture, timeline and cost in writing before we start, so you know what you are getting.

  3. Build

    Short iterations with working deliveries that you can see and test along the way.

  4. Delivery & handover

    Production deploy, documentation and support so your team can own the result.

Experience

Resume

Work Experience

  1. Jul 2025 – Present

    Web and Cloud Architect

    Kata Software · Remote, México

    I define the architecture of the web products and lead the backend team: technical direction, code review and delivery. Microservices on Azure with Kubernetes and Docker; CI/CD in Azure DevOps.

    • Team Leadership
    • Cloud Architecture
    • Azure DevOps
    • Kubernetes
    • Docker
  2. Mar 2022 – Jun 2025

    Software Engineer

    Kata Software · México

    Full-stack development of fintech products with Node.js and .NET, including database design and optimization.

    • Node.js
    • TypeScript
    • React
    • .NET
    • MongoDB
  3. Jul 2018 – Mar 2022

    Development Programmer

    ITP Aero · México

    Analysis, development and maintenance of custom enterprise software. Introduced coding standards and new technologies.

    • .NET Framework
    • .NET Core
    • Angular
    • React
    • SQL Server
  4. Oct 2014 – Present

    Freelance Developer

    Self-employed · Querétaro, México

    Custom software for clients, from requirements to delivery. Led teams of up to 5 engineers.

    • PHP
    • JavaScript
    • .NET
    • React
    • Angular
    • MongoDB
    • SQL

My Skills

  • Backend & Architecture (core)

    • Node.js
    • TypeScript
    • C#
    • .NET Core
    • REST APIs
    • Microservices
  • Frontend

    • React
    • Next.js
    • Angular
  • Cloud & DevOps

    • Azure
    • DigitalOcean
    • Docker
    • Kubernetes
    • Azure DevOps
    • CI/CD
  • Databases

    • PostgreSQL
    • MongoDB
    • SQL Server
    • MySQL
  • Mobile

    • React Native
    • Flutter
    • Xamarin
    • Unity
Request My CV

Selected Work

Featured Projects

  • Kalista

    SaaS platform to run aesthetic clinics: clinic back office, patient and mobile apps, and a superadmin console.

    • Next.js
    • TypeScript
    • Node.js
    • PostgreSQL
  • Tallerly

    Operating system for auto repair shops: work orders, scheduling, parts and a live portal for the customer.

    • Next.js
    • React
    • TypeScript
    • Docker
  • Vellet

    SaaS for freelancers to keep clients, quotes and payments in one place, with a mobile app that works on local data.

    • React Native
    • Expo
    • Fastify
    • PostgreSQL
    • TypeScript
  • EarnPath

    Offline-first mobile app that tracks net earnings for independent contractors in the United States.

    • React Native
    • Expo
    • Node.js
    • TypeScript
    • PostgreSQL
  • Confidential Project

    NomiFácil App

    Mobile kiosk application for HR self-service management. Covers attendance, payroll queries, and HR workflows.

    • Flutter
    • Node.js
    • TypeScript
  • Confidential Project

    Geofencing Attendance System

    Real-time attendance tracking using geofencing, integrated with NomiFácil's HR platform.

    • Node.js
    • TypeScript
    • C#
    • Angular
  • Confidential Project

    TraceRed Payment App

    Mobile payment management app for TraceRed: transactions, payment history, and financial operations.

    • Xamarin
    • C#
  • Confidential Project

    XXIO — AR Product Catalog

    Augmented reality mobile app for interactive catalog scanning. View 3D models and interact with products in AR.

    • Unity
    • C#
    • Xamarin

Contact

Let's Work Together

Have a project in mind?

Tell me what you want to build, or what is not working in your systems today. I usually reply within a day.

Send Me a Message

I reply within 24 hours