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Working from home
  • Quito, Ecuador

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SebasAB/README.md

Sebastián Aliaga

Software Engineer specialized in composable architectures, CMS ecosystems, and AI-augmented development.


Profile

Engineer with hands-on experience building and maintaining production systems across multiple CMS and cloud ecosystems, including Sitecore (XM Cloud / Sitecore AI), Optimizely (PaaS & SaaS), and Contentstack.

My work focuses on bridging content platforms, frontend architecture, and backend systems, ensuring that applications are scalable, maintainable, and aligned with real business use cases.

I combine strong fundamentals in software engineering with practical use of AI tools to accelerate development, automate workflows, and improve delivery quality without compromising system design.


Core Expertise

Composable & Headless Architectures

  • Sitecore XM Cloud / Sitecore AI (certified)
  • Optimizely (PaaS and SaaS) (certified)
  • Contentstack
  • Component-driven and content-driven application design

Frontend Engineering

  • Next.js, React, TypeScript
  • Performance-focused UI architecture
  • Integration of CMS data into scalable frontend systems

Backend & APIs

  • Node.js, Express
  • REST API design
  • Data modeling and access control patterns

Cloud & Infrastructure

  • AWS (application-level usage)
  • Docker
  • CI/CD pipelines
  • Understanding of distributed system constraints

Mobile Development

  • React Native
  • Flutter

Automation & Data

  • Python for scripting, automation, and data workflows

Engineering Approach

  • Focus on system design, not just implementation

  • Build with scalability and maintainability as first principles

  • Apply security considerations early (data handling, access control, encryption patterns)

  • Use AI tools as force multipliers, not shortcuts:

    • Code generation with validation and refactoring
    • Architecture iteration and rapid prototyping
    • Automation of repetitive engineering tasks
  • Prioritize developer experience in the systems I build


Selected Work

Locker1 — Secure Password Management System

Locker1 is a full-stack application designed to handle sensitive credentials with a security-first architecture.

The system allows users to store, organize, and share passwords securely, supporting both individual and team-based access models.

Key characteristics:

  • User-level encryption model with controlled decryption
  • Group-based password sharing with defined access boundaries
  • Designed to prevent insecure patterns in credential storage
  • Built as a practical implementation of secure system design principles

Tech stack: Node.js, Express, MongoDB, Next.js

Note: The implementation was completed as part of an academic project and is not publicly hosted in this profile.


CMS & Enterprise Work

  • Development of components and integrations in Sitecore XM Cloud environments
  • Work within Optimizely ecosystems (PaaS/SaaS)
  • Implementation of headless CMS architectures using Contentstack
  • Integration of backend services with frontend applications in real-world scenarios

Direction

Currently focused on evolving toward roles that require:

  • Ownership of system architecture
  • Strong frontend + backend integration
  • Security-aware design
  • Effective use of AI in engineering workflows

Contact

LinkedIn: https://www.linkedin.com/in/aliagasebas/ Email: sebasaliaga2515@gmail.com

Pinned Loading

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    Python 2

  2. ZizuMania ZizuMania Public

    2D Unity game where you'll be able to play with the one and only Zizu Hernan

    C# 2

  3. Sitecore-Hackathon/2023-Wolfeinstein Sitecore-Hackathon/2023-Wolfeinstein Public

    Wolfeinstein

    TypeScript 1

  4. constellation4sitecore/xmcloud-constellation constellation4sitecore/xmcloud-constellation Public

    TypeScript 1 3