Castlestone TechnologySMS & Email Marketing
Automated text coupons, promotions, and email campaigns, in English and Spanish, tracked from send to redemption.
Software & AI Engineering ServicesSilicon Valley Talent. Latin America Pricing.
Custom applications, websites, automations, and product features built by elite nearshore engineers at a fraction of traditional U.S. development costs.
70%
Less than U.S. dev rates
Top 5%
Of applicants accepted
10+
Countries across Latin America
Full-Stack
AI, Web, Mobile & More
We Build Everything.
🖥️
Web Apps & SaaS
Dashboards, client portals, internal tools, SaaS platforms
🤖
AI & Automation
Chatbots, document AI, voice agents, custom GPT integrations, workflow automation
📱
Mobile Apps
iOS, Android, and cross-platform React Native applications
🛒
E-Commerce
Custom storefronts, Shopify development, payment integrations
🔗
APIs & Integrations
Third-party connections, custom REST APIs, data pipelines
🌐
Websites & Landing Pages
Marketing sites, redesigns, conversion-focused builds
⚡
Product Features
Add features to your existing product fast, without hiring
🏗️
CTO-as-a-Service
Tech strategy, architecture decisions, and engineering leadership
⚙️
Automations & Workflows
Zapier-level automation built custom to your exact needs
Learn more →
How We Work Together
Hourly Blocks
From $45/hr
Best for: Maintenance, small features, technical consulting
- ✓Buy hours upfront, use on demand
- ✓No retainer required
- ✓Rollover unused hours
Most Popular
Project-Based
Custom Quote
Best for: MVPs, new products, client builds
- ✓Fixed scope and timeline
- ✓Milestone-based delivery
- ✓Dedicated project manager
- ✓Full IP transfer on completion
Dedicated Team
From $3,500/mo
Best for: Ongoing development, startups, scaling teams
- ✓1–3 engineers assigned exclusively to you
- ✓Feels like in-house
- ✓Cancel anytime
- ✓Async + real-time collaboration
🏆
Top 5% Vetted
Rigorous multi-stage technical screening. Only elite engineers make the cut.
🌎
US-Market Experienced
Familiar with American business culture, communication standards, and time zones.
💬
Bilingual Professionals
English-fluent, async-friendly, no communication gaps.
Ready to Build Something?
Tell us what you need. We'll scope it, staff it, and ship it.
Start Your Project