Sebastian Amaro

I lead the design and development of innovative software solutions across multiple domains — including retail automation, AI-driven optimization, and enterprise integration — leveraging the Microsoft Azure ecosystem, .NET Core, and modern cloud architecture.

As both a senior engineer and architect, I’ve delivered end-to-end implementations that enhanced scalability, maintainability, and time-to-market for large retail clients such as Netto.

My work involves defining software architecture, mentoring teams, and leading technical decision-making for distributed systems built on microservices, Azure Service Bus, Functions, and Kubernetes. I focus on crafting modular and future-proof solutions, integrating AI and machine learning when relevant to the client’s needs.

Beyond development, I act as a Technical Trainer and mentor for our apprentices (Azubis) — building an internal training program that combines real projects with strong foundations in OOP, cloud computing, and modern development practices. I created complete learning paths, conducted hands-on workshops on C#, AI, and architectural thinking, and helped several junior developers transition into full-time engineers.

Throughout my time at Hahn Software, I’ve:

Designed and deployed AI-powered forecasting and automation pipelines on Azure.

Architected and delivered a workflow orchestration system integrating Cosmos DB (Gremlin) and Temporal.io for dynamic process execution.

Led development of internal tools such as an Apprentice Management System (React + .NET + Azure SQL).

Introduced best practices in CI/CD, GitVersion, Terraform, and container orchestration.

Conducted performance optimization of large-scale hotel matching algorithms, improving runtime efficiency by over 60%.

As a freelancer and consultant within Hahn’s ecosystem, I specialize in helping organizations translate business goals into solid, maintainable technical architectures.

As part of ATIO’s core development team, I contributed to the evolution of the company’s ERP platform, which manages oil and fuel distribution operations across multiple countries. My role focused on designing and implementing back-end systems in .NET Core and Angular, integrating financial modules, invoicing systems, and payment gateways.

The platform processed large-scale data flows and supported integration with multiple third-party systems. I was responsible for optimizing key business modules and ensuring seamless communication between microservices and external APIs.

Key contributions:

Developed modular, API-first services for billing, inventory, and reporting.

Re-architected several components using .NET Core and Entity Framework Core, improving maintainability and performance.

Implemented CI/CD pipelines and Docker-based deployment workflows.

Collaborated closely with business analysts to translate requirements into robust technical deliverables.

I also acted as a technical liaison between product teams and external clients, ensuring efficient rollout and post-deployment support. My freelance approach focused on delivering fast, maintainable, and future-proof solutions that could evolve alongside the client’s business processes.

I joined Tienda Nube, one of Latin America’s fastest-growing e-commerce platforms, to provide technical support and develop internal improvements that directly enhanced platform performance and customer experience.

I supported both B2B and B2C clients, resolving complex technical issues, debugging production problems, and contributing to long-term product stability. In parallel, I developed internal tools and automation scripts using PHP, Laravel, AWS, and Docker to improve efficiency and scalability of customer support operations.

Key highlights:

Delivered training sessions across the company to improve team performance and tool usage.

Automated internal workflows, reducing resolution time for recurring issues.

Collaborated with the core development team to implement key bug fixes and feature enhancements.

This experience reinforced my full-stack versatility, ability to communicate with both clients and technical teams, and my commitment to delivering tangible results in fast-paced SaaS environments.