Boutique software development

We build software that actually ships.

Sidera Tech is a tight-knit team of engineers and architects delivering high-quality, production-ready software for ambitious companies.

Start a project → See what we do

10+

Projects delivered

8 yrs

In the field

100%

Client satisfaction

// What we build

End-to-end engineering,
no fluff.

From architecture to deployment, we take full ownership of the technical side so you can focus on your product.

Product Engineering

Full-stack web and mobile applications built with modern, maintainable stacks — from MVP to scale.

React · Node · TypeScript

Browser Extensions

Custom Chrome and Edge extensions that automate repetitive web tasks — data extraction, bulk actions, workflow integrations, and more.

Chrome APIs · Manifest V3

Technical Advisory

Architecture reviews, tech stack decisions, code audits, and engineering team augmentation on demand.

Strategy · Audit · CTO-as-a-service

// Our work

Software built for real workflows.

A look at what we've shipped — tools designed for professionals who can't afford to waste time.

Chrome Extension

ConteFi

Bulk-download every invoice from Mexico's SAT portal in seconds. No clicking row by row — the extension detects your search results automatically and downloads all XML and PDF files in one go, then exports everything to a structured Excel file.

CFDI 3.3 + 4.0

Both versions supported

100% local

No servers, no cloud

$269 MXN

One-time license

Built for accountants and tax professionals · Available on the Chrome Web Store

// Get in touch

Let's build something together.

Have a project in mind? Tell us what you're working on and we'll get back to you within one business day.

Send us an e-mail