Hernán Hawryluk

CTO & AI-Native Full-Stack Engineer

I lead and develop digital products end to end, covering architecture, backend, web and mobile applications, infrastructure, and production operations.

I combine technical experience with SDD and AI agents to turn requirements into scalable solutions, supported by code reviews, testing, and acceptance criteria.

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About Me

I specialize in backend development with Java and Spring Boot, including APIs, integrations, security, and databases. I complement this experience with web development using React and Next.js, and mobile applications using React Native, SwiftUI, and Kotlin.

I manage AWS infrastructure, CI/CD pipelines, and app releases on the App Store and Google Play. I work directly with clients to define priorities and make technical decisions, balancing product needs, costs, and maintainability.

Featured Projects

Projects developed without AI assistance that demonstrate my experience in architecture, implementation, and production, and the technical judgment I now apply when working with agents.

ByUClub

Benefits platform for managing and promoting discounts integrated into a digital wallet, making them easier to access and use.

Spring Boot
React
AWS

iCatalogIQ

Auditing application that automatically detects inconsistencies and issues in users music catalogs.

FastAPI
React
AWS

TiendaRep

E-commerce application for managing products, searching for items, and making purchases through a shopping cart with Mercado Pago payments.

React Native
TypeScript
Expo

Metropistas

Roadside assistance application for highways in Puerto Rico, featuring geolocation, service coverage validation, and push notifications.

Spring Boot
SwiftUI
Kotlin

OUT - Bars & Experiences

Mobile application for discovering cocktail bars in Buenos Aires, making reservations, accessing discounts, and purchasing experiences.

React Native
TypeScript
Expo

Instagram Clone

Instagram clone that recreates its core features and browsing experience through a mobile application built with React Native.

React Native
Expo
Firebase

NBL Renders

Architectural rendering website that showcases projects through custom design, animations, and illustrations to attract clients.

HTML5
CSS
JavaScript

Interactive Render

Interactive experience for exploring and customizing an apartment, adjusting finishes and lighting in an immersive virtual environment.

Unreal Engine 5
SketchUp

Technical Skills

Spec-Driven Development (SDD)
Agent Orchestration
Context Management
JavaScript
TypeScript
React Native
Expo
Swift
SwiftUI
Kotlin
Jetpack Compose
Java
Spring Boot
Python
Django
REST Framework
SQLite
MySQL
PostgreSQL
Firebase
MongoDB
Prisma
Bash
AWS
App Store
Google Play
Docker
HTML
CSS
React
Node.js
Express
Next.js
Tailwind
Bootstrap
Git
GitHub
Figma
Asana
Jira
Trello
Unreal Engine

Certifications

My Experience

Hako Software

CTO & Full-Stack Developer

I lead the architecture and development of digital products, defining priorities with clients and managing operations on AWS. I apply SDD and coordinate AI agents using acceptance criteria and deliverable validation, balancing scalability, costs, and technical quality.

September 2024 - Present

Bytewave - Innovation in Software

Full-Stack Developer

I developed backend services and APIs with Java and Spring Boot for applications with thousands of active users, along with interfaces using React and React Native. I managed AWS infrastructure, CI/CD pipelines, and app releases on the App Store and Google Play.

February 2024 - August 2024

Freelance

Full-Stack Developer

I developed commercial products end to end, covering backend, web, mobile, AWS infrastructure, and automated deployments. I published applications on the App Store and Google Play, with projects exceeding 10,000 active users.

October 2022 - March 2024

Contact Me

Looking to develop a product, evolve a platform, or bring in technical leadership? Get in touch to discuss your project or a professional opportunity.