Hi, I'm Daniel —
Senior Full-Stack Engineer.
I'm a software engineer based in Buenos Aires with 5+ years building web and mobile products from the ground up. Currently serving as CTO at Aloharmony, where I architected and shipped a meditation platform used by thousands of people daily — solo, across the full stack.
Selected Work
Projects
Meditation Platform
Aloharmony
Built the full product from scratch as CTO/Lead Engineer — React Native mobile app with offline-first architecture, NestJS + GraphQL backend (90+ endpoints), Next.js web platform, and complete AWS infrastructure. Scaled to 16k+ registered users and 1,300 daily active users.
Mobile Companion App
Subliful
Mobile companion app built with React Native for iOS and Android. Delivers daily inspiration, reflections, and personal growth challenges. Built as part of the CRIZZ ecosystem with GraphQL backend and subscription management.
Finance Analytics Platform
XProfit
Finance analytics platform that extracts accounting data to help businesses understand their financial health and make better decisions. Built the full web platform and backend as Technical Leader at CRIZZ.
Writing
Latest from the blog
From 3 Seconds to 200ms: How We Fixed the Landing Page
A slow landing page was killing conversions. Here's the full breakdown of what was wrong and exactly how we fixed it.
Building an Offline-First React Native App: What I Learned
Audio streaming, unreliable connections, and thousands of users. Here's the architecture that made Aloharmony's mobile app work anywhere.
Why We Migrated from GraphQL Federation to a Monolith
We had microservices. They were slowing us down. Here's the honest story of why we went back to a monolith — and why it was the right call at our stage.
Career
Experience
Sr. Software Engineer / CTO
Lead engineer and technical decision-maker for a meditation platform. Responsible for the full product ecosystem — mobile app, backend APIs, web platform, and cloud infrastructure.
- → Scaled platform to 16,000+ registered users and 1,300 daily active users
- → Built React Native mobile app with offline-first architecture and real-time audio streaming
- → Designed NestJS + GraphQL backend with 90+ endpoints from scratch
- → Cut landing load time from ~3s to ~200ms with Next.js SSR and CloudFront CDN
- → Migrated GraphQL federation microservices to an optimized monolith, reducing operational complexity and latency
- → Implemented end-to-end Stripe subscription billing including trial flows, dunning management, and webhook handling
- → Managed full AWS infrastructure: ECS, EC2, S3, CloudFront, Route53, and Redis caching layer
Technical Leader
Led a 5-engineer team across four simultaneous products, owning architecture decisions, code quality, technical roadmap, and direct collaboration with stakeholders.
- → Led cross-functional team of 5 developers across Subliful, Adkiero, Yovoto, and XProfit
- → Defined technology stacks and architectural patterns for all products
- → Established coding standards, PR review processes, and sprint cadences
- → Mentored engineers through code reviews and pair programming sessions, measurably improving team velocity
- → Collaborated directly with stakeholders to translate business requirements into technical specs and delivery timelines
Full Stack Developer
Delivered full-stack features across multiple client projects, from e-commerce platforms to mobile applications.
- → Built e-commerce platforms with PayPal and Authorize.net integrations, handling PCI-compliant checkout flows
- → Shipped TaxMambo React Native app from requirements to App Store deployment
- → Delivered RESTful backend services and responsive frontend interfaces across multiple client projects
Get in touch
Let's work
together.
Whether you're hiring, building something new, or just want to talk engineering — I'm always up for a good conversation. Reach out and let's see if there's a fit.