Enterprise Solutions Architect
Building Scalable
Digital Products
I am Sergio Castro. A Senior Full-Stack & AI Developer designing highly available, secure cloud architectures and AI-driven systems that empower businesses to scale efficiently.
Core Expertise
Delivering value through technologyCloud Architecture
Designing and migrating scalable infrastructures in Azure and AWS. Ensuring high availability and security for enterprise applications.
AI Automation
Integrating advanced AI models and automation workflows with Python to optimize operational efficiency and reduce costs.
Backend Systems
Developing robust microservices and monolithic APIs using C#, .NET Core, and Node.js with SQL Server & Oracle databases.
Modern Frontend
Crafting responsive, high-performance user interfaces using Angular and React to deliver exceptional user experiences.
How I Work
A proven methodology for enterprise deliveryDiscovery & AI Fit
Deep dive into business logic to identify opportunities where AI and automation can exponentially improve workflows.
Cloud Architecture
Designing scalable, secure cloud-native systems (Azure/AWS) ensuring a robust foundation before writing code.
Agile Development
Iterative engineering in Scrum Sprints, prioritizing clean code, test-driven paradigms, and continuous stakeholder alignment.
CI/CD & Support
Automated deployment pipelines and proactive monitoring, ensuring your enterprise software remains stable and highly available.
About Me
I am Sergio Castro, an Enterprise Software & AI Consultant operating through a legally registered company. This formal structure ensures professional support, strict compliance, transparency, and absolute reliability for all my enterprise clients.
My expertise lies at the intersection of robust backend architectures and modern artificial intelligence. By leveraging a self-taught mindset and a relentless drive for continuous learning, I quickly adapt to emerging methodologies, keeping your technology stack not just current, but ahead of the curve.
Core Philosophy & Strengths
- Scalability First: Designing architectures that grow seamlessly with your business.
- Security & Compliance: Delivering enterprise-grade, secure applications.
- AI-Driven Innovation: Integrating machine learning for intelligent automation.
- Agile Delivery: Rapid iteration with uncompromising code quality.
07+
Years ofExperience
40+
EnterpriseProjects
15+
Technologies
6
Countries
Career Path
My personal journeyProfessional Experience
CEO & Lead Software Architect
GuardPayFinTech digital payments platform architecture, API integration, and AI-driven automation.
Freelance Software & AI Developer
Self-EmployedDeveloped full platforms, modernized websites, and introduced Scrum structures.
Software Development
OlimpIA ITSpecialized training in Artificial Intelligence and the architecture of autonomous AI agents. Led enterprise software implementations.
Lead Software Developer
Smart PaymentGuided a team of 5 developers in building an online payment platform. Defined architecture, modernized UI/UX, and implemented AI-powered chatbots.
Education & Certifications
Software Engineering
Politécnico Grancolombiano (7th / 8th Semester)Advanced Tech Certifications
Udemy (100% Completed)- Angular: From Zero to Expert
- React: The Definitive Guide
- Python TOTAL with AI Integration
- C# & .NET Core Developer
- Fullstack JS, Node.js, CSS Grid & SASS
Behind the Code
The Human Element of Technology
While my day-to-day involves architecting complex cloud systems and training AI models, I firmly believe that technology is ultimately about people. Every line of code I write is aimed at solving real human problems, automating tedious tasks, and making workflows easier for teams.
Beyond the screen, I am a passionate self-taught learner who enjoys exploring how emerging technologies can be harnessed for good. When I'm not coding or consulting, you can usually find me reading about the latest tech trends, continuously upgrading my skills, or enjoying a good cup of coffee while brainstorming the next big solution.
Client Success
What professionals say about my work"Sergio restructured our entire cloud architecture and integrated AI-driven workflows that saved us months of development time. His vision for enterprise scalability is unmatched."
Cloud Architecture Manager
Enterprise Tech Company"An exceptional developer and leader. He guided our team through a critical online payment project, delivering clean, secure code under rigorous corporate standards."
Technical Lead
Financial Sector"His ability to translate complex business requirements into fast, reliable software is incredible. Working with him in Scrum environments guarantees rapid and successful delivery."
Product Owner / Cell Lead
Agile Software AgencyTechnology Stack
Tools and frameworks I master
C#
.NET Core
Angular
Python
React
Node.js
SQL Server
Oracle
AWS
Azure
Git
ToolsFeatured Work
Recent enterprise solutionsLet's Talk Business
Ready to scale your product? Contact me today.Contact Information
Fill out the form and I will get back to you within 24 hours.