Siblings Software

About Siblings Software

Siblings Software is a Miami, Florida software outsourcing firm founded in 2018 by siblings Javier and Constanza Uanini, with a development team in Cordoba, Argentina. Their 10-to-50-person team specializes in mobile app development, progressive web apps, web development, API development, AI and blockchain, e-commerce, and staff augmentation for healthcare, banking, travel, and hospitality clients. Their nearshore model combines Miami client proximity with competitive Argentine development rates.

Who Siblings Software Is Best For

Siblings Software is well suited for US companies that want nearshore development economics while maintaining close client relationship through their Miami headquarters. The Argentine development team in Cordoba operates in compatible time zones with strong English communication. Healthcare, banking, and e-commerce organizations with $10K+ project needs benefit from their responsive, quality-focused outsourcing model.

Why Choose Siblings Software

Things to Consider

Siblings Software Services

Selected Work

Sur Technology Holdings — Payment Gateway Modernization

Sur Technology Holdings

Replaced a legacy payment engine with a cloud-ready, PCI-aligned platform; hybrid squad of 8 delivered a 12-week MVP and later scaled to 3,000+ U.S. merchants and USD 160M processed in a trailing 12 months.

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Bari — B2B E-Commerce Platform

Bari

Built a .NET Core + React B2B marketplace connecting distributors and retailers; launched in 6 months with GraphQL APIs and ongoing maintenance by a small dedicated team.

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BinSensors — Smart City Waste IoT

BinSensors

Delivered Azure REST APIs and an Angular portal for IoT bin sensors; published outcomes include ~50,000 gallons of fuel saved and adoption across multiple cities and collector companies.

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