About Us
We are a software development outsourcing company based in the United States. The main goal of our experienced team is to simplify the lives of businesses and users through innovative software solutions and staff augmentation services.
We are passionate about technology and use the best of it to improve our clients' business processes. The company was founded in 2018 by Javier Uanini and his sister Constanza in Córdoba, Argentina, and has since grown into a 30-person engineering team serving clients across fintech, healthcare, and construction. For Spanish-speaking readers in Argentina, the same profile is available in Javier Uanini (español).
Want to see what that passion looks like in action? Review our latest case studies to learn how companies like BinSensors and Viking Services partnered with us to ship resilient products.
We're always looking for talented engineers. If you'd like to work on real products with a remote-first team, see our careers page for open positions.
How we deliver in 2026
AI-assisted engineering, a security baseline on every repository, and a senior engineer accountable for every merge.
AI-augmented
human-reviewed
Our engineers work with AI coding agents inside written repository rules. Agents draft code, tests and migrations, but they never merge their own work: every change goes through a pull request that a senior engineer reviews. Credentials and customer data stay out of prompts. Read how we approach AI code security.
Security
in the pipeline
The repositories we set up start from the same baseline: secret scanning with gitleaks, static analysis and dependency scanning in CI, container image scanning with Trivy before deploy, and short-lived OIDC credentials instead of long-lived cloud keys. See our DevSecOps services.
Nearshore
led from the US
Siblings Software is led from Miami, with our engineering team in Córdoba, Argentina working US business hours. You get two-week sprints with a demo and a retrospective, a shared velocity dashboard, and one accountable lead. See our nearshore development model.
Recent
work
We moved a European ISO 27001 compliance SaaS to AWS Fargate with MFA and gated deploys, and we are building a rental-management app for Argentine property owners on a 12-week scope. We also shipped the Boca en Boca marketplace and the Vyxia personalized-products store.
Purpose
To simplify people’s lives through tech-innovation.
Mission
We help our clients make the best decisions on tech innovation to achieve exceptional results. Users are the guides of our work and for whom we create friendly interfaces to make their life simpler. We work with the most talented people, encouraging them and providing them with the tools necessary to become leaders of the technology industry.
Vision
To be leaders in a world where companies always choose innovation and top-notch technologies.
Values
1. Innovation and creativity
2. Honesty and trust
3. Professionalism and organization
4. Passion for what we do
5. Intrepid and dreamers
About us in Argentina (office, team, PDF) More info in Spanish (PDF)
Frequently Asked Questions
Siblings Software is a software development outsourcing company based in the United States. Our engineering hub is in Córdoba, Argentina, at Sipe Sipe 1479, and our engineers work remotely across Latin America.
In 2018, by Javier Uanini and his sister Constanza. It has since grown into a 30-person engineering team serving clients in fintech, healthcare, and construction.
Javier Uanini is founder and CEO. You can meet the broader leadership on the team page.
Our engineers use AI coding agents inside written repository rules, and agents never merge their own work. Every change goes through a pull request that a senior engineer reviews, and CI runs tests, secret scanning, static analysis and dependency checks before anything ships. Credentials and customer data stay out of prompts.
Yes. The open roles, how the work runs, and how to apply are on our careers page.
Use the contact form on this page. We typically respond within one business day.