Hello, I'm

Mariano Gendra

I'm a  Sr. Developer

I design, build, and deploy custom software solutions that help businesses scale — from idea to production.

Mariano Gendra — Senior Software Developer and IT Consultant
About Me

Turning complexity into clean, working software

I’ve always been driven by curiosity about technology. From exploring every computer I could get my hands on, to studying Computer Engineering — that curiosity became a career.

After several years working in-house at companies, I realized my true calling was working independently: analyzing problems, proposing solutions, and building software that genuinely helps businesses succeed.

Today I work with clients across industries to deliver custom web applications, robust APIs, scalable databases, and strategic IT consulting. I’m certified by AWS as both a Cloud Practitioner and AI Practitioner, and I stay at the frontier of what’s possible — including AI-powered product development.

40+
Clients Served
100+
Projects Delivered
20
Years Experience
4
Own Products
Technical Expertise

The tools I use to build great software

Backend

  • C# / .NET
  • ASP.NET Core
  • Blazor
  • MVC
  • N-Tier Architecture
  • Microservices
  • REST APIs
  • Python

Frontend

  • Angular
  • React
  • JavaScript (ES2020+)
  • TypeScript
  • HTML5
  • CSS3
  • Responsive Design

Databases

  • SQL Server
  • MySQL
  • PostgreSQL
  • Database Design
  • Query Optimization
  • Data Modeling

Cloud & AI

  • AI Development
  • AWS (EC2, S3, Lambda, RDS)
  • LLM Integration
  • Claude API
  • OpenAI API
  • AWS Certified

Mobile

  • Hybrid Mobile Apps
  • Android Compatible
  • iOS Compatible
  • Cross-Platform

Tools & DevOps

  • Git
  • Docker
  • Visual Studio
  • VS Code
  • Azure DevOps
  • CI/CD
Work History

20+ years building software that works

From in-house engineering to independent consulting — a career built on solving real business problems.

Independent Consultant & Developer

Freelance / Self-Employed

Deliver end-to-end software solutions for SMBs, startups, and enterprise clients across multiple industries. Engagements range from greenfield web applications and REST API development to database architecture, IT consulting, and AI-powered feature integration. Built and launched 4 proprietary SaaS products. Served 40+ clients, delivered 100+ projects.

  • C# / .NET
  • ASP.NET Core
  • Angular
  • SQL Server
  • AWS
  • AI / LLMs
  • REST APIs

Back End Engineer

Siblings Software

Joined as a back-end engineer in a staff augmentation model, embedded within client teams to deliver high-quality software solutions. Built and maintained systems using .NET Core, C#, and SQL Server across multiple client projects simultaneously.

  • C# / .NET Core
  • ASP.NET Core
  • SQL Server
  • REST APIs

Systems Development Lead

Hoteldo.com

Joined as Web Developer and Webmaster, later expanded into SEO consulting, and ultimately led the company’s systems development team. Grew from building and managing the web presence to architecting the backend platform that powers the tourism wholesale operation.

  • C# / .NET
  • SQL Server
  • Web Development
  • SEO
  • Systems Architecture
Selected Work

Projects I’m proud of

A selection of websites, backends, and products built for clients across industries.

Backend

Ruth Benzacar

Custom backend platform for one of Argentina’s most prestigious contemporary art galleries. Artwork inventory management, digital catalog creation, sales processing, and artist administration — built for a gallery with international reach.

Website

Latitud Hoteles

Hotel website with custom CMS integration. Full design, front-end development, and content management system build.

Conciliación de Tarjetas platform screenshot
Product

Conciliación de Tarjetas

Card reconciliation platform for businesses. Automates the matching and verification of credit and debit card transactions.

Website

Texsim

Business website with modern design, responsive layout, and a clean user experience built for the company’s online presence.

Horest Guide platform screenshot
Backend

Horest Guide

Hotel and restaurant directory platform. Backend system handling listings, search, filtering, and content management at scale.

Backend

HotelDo Tourism

Tourism wholesale platform connecting hotels and travel agencies. Complex pricing, availability, and booking backend system.

Mayorista Autopartes Deyro system screenshot
Backend

Mayorista Autopartes (Deyro)

Auto parts wholesale backend system. Inventory management, order processing, pricing engine, and client portal for a B2B wholesale operation.

Content Manager Latitud CMS screenshot
Backend

Content Manager (Latitud)

Custom CMS built specifically for the Latitud Hoteles group. Multi-property content management, media library, and publishing workflows.

Callcenter Control management system screenshot
Backend

Callcenter Control

Call management backend system. Agent assignment, call routing, real-time reporting, and performance dashboards for an internal call center operation.

What I Do

How I can help your business

From strategy to deployment, I cover the full spectrum of software development and consulting.

Web Development

Custom web applications built front to back. Self-managed CMS solutions, scalable architecture, and clean code that’s easy to maintain and grow.

IT Consulting

Strategic advice and resource optimization to help your organization succeed. I analyze your current systems, identify bottlenecks, and propose practical solutions.

Database Architecture

Design and implementation of scalable, optimized database structures. From schema design to query optimization and data migration strategies.

Responsive Web Design

Pixel-perfect, responsive interfaces that look great on any device or browser. Fast-loading, accessible, and built to modern web standards.

API Development

Custom REST APIs and integration middleware to connect your systems and automate workflows. Clean documentation and robust error handling included.

AI Integration

LLM-powered features, AI-driven automation, and intelligent interfaces using the latest models — Claude, GPT, and custom fine-tuned solutions.

Client Feedback

What clients say about working with me

“Mariano transformed our outdated system into a modern, reliable platform. On time, on budget, and genuinely invested in our success. He understood our business needs from day one.”

CEO, Hospitality Sector

Tourism & Hotels, Argentina

“Exceptional technical skill combined with clear communication. Mariano understood our needs from the first call and delivered exactly what we envisioned — with suggestions that made the final product even better.”

Founder, E-commerce Sector

Retail & Distribution, Argentina

“Our API integration project went smoothly from start to finish. Mariano’s experience shows in every architectural decision. The system has been running without issues for over a year.”

CTO, Financial Services

Fintech & Payments, Argentina

Articles

Insights on software, tech & consulting

Practical thoughts on building software, working with clients, and staying ahead in tech.

Get In Touch

Let’s build something great together

Have a project in mind or want to discuss how I can help? Send me a message and I’ll get back to you within 24 hours.

Available for new projects

WhatsApp

+54 11 6707 0964

Location

Buenos Aires, Argentina (Remote Worldwide)

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