Angel Velasquez Senior Software Engineer & AI Solutions Architect
Designing scalable backend systems with PHP 8.4 & Symfony 7.2, deploying enterprise mobile applications (Android/iOS), and operationalizing deterministic AI workflows.
Technical Pillars & Architectural Domains
Production-grade engineering across distributed backend systems, mobile runtimes, and artificial intelligence.
Enterprise Backend & Domain Architecture
Transactional systems designed with Domain-Driven Design (DDD), Clean Architecture, CQRS, PHP 8.4, Symfony 7.2, API Platform, and strict relational data models.
final readonly class PensionAllocation
{
public function __construct(
public PortfolioId $portfolioId,
public Money $evaluatedAmount,
public DateTimeImmutable $settledAt
) {
// Invariants & Business Guarantees
Assertion::greaterThan($evaluatedAmount->cents(), 0);
}
}Enterprise Mobile Ecosystems
Native and hybrid deployments across Google Play & Apple App Store. Kotlin 2.1, Jetpack Compose, KMP 2.1, Capacitor 6/7, Trusted Web Activities (TWA), and Xcode Cloud CI/CD.
Applied AI & Autonomous Tool Calling
Production LLM orchestration with Gemini 3.7 Flash, Claude Opus 5 / Sonnet 5 & GPT 5.6 (Sol, Terra, Luna) APIs. Deterministic function calling, structured JSON output validation, webhook pipelines, and zero-hallucination guardrails.
Cloud Infrastructure & Zero-Cost Deployments
Astro 5.4 SSG, Cloudflare Pages & CDN, Docker containerization, Nginx reverse proxies, Linux systems, and automated CI/CD delivering instant execution with zero server cost.
Software Engineering Experience
Professional timeline delivering production systems across enterprise backends, mobile ecosystems, and applied AI architectures.
Altimea
PresentArchitecting and maintaining high-concurrency web backends and multiplatform mobile applications for enterprise European clients, specializing in financial and social protection systems.
- ▹ Refactored mission-critical legacy monoliths to PHP 8.4 and Symfony 7.2 using Domain-Driven Design (DDD) and Clean Architecture.
- ▹ Engineered cross-platform mobile solutions with Kotlin Multiplatform (KMP 2.1), Jetpack Compose, and SwiftUI for shared native execution.
- ▹ Integrated deterministic AI tool-calling pipelines connecting LLM models (Gemini, Claude, GPT) to backend transactional APIs with strict schema validation.
Corporación Logiscar, C.A.
Led software development, internal business management systems, and core IT infrastructure for logistics and commercial operations.
- ▹ Developed customized administrative, billing, and inventory control systems with PHP and relational SQL databases.
- ▹ Maintained and optimized Linux server infrastructure, ensuring high reliability for daily enterprise logistics.
- ▹ Automated reporting workflows, reducing inventory reconciliation time across warehouse operations.
Alcaldía de Caracas
Developed institutional software applications and data management platforms for public citizen programs.
- ▹ Built and deployed the official information management system for the Caracas Coexistence Plan program.
- ▹ Designed relational database schemas and automated data processing scripts for public administration reporting.
Engineering Case Studies
Technical briefs detailing architectural challenges, implementation decisions, and verified production metrics.
French Enterprise Wealth & Pension Platform
Modernizing a high-concurrency transactional backend with Symfony, PHP 8 & Domain-Driven Design.
Panaservice Mobile Enterprise Ecosystem
Corporate mobile deployment across Google Play & Apple App Store with TWA, Capacitor 6 & Xcode Cloud.
Autonomous AI Agent & Workflow Automation Engine
Deterministic LLM orchestration, structured JSON output validation & zero-hallucination pipelines.
Architecture & Engineering Blog
Deep-dive articles on enterprise backend design, production mobile systems, and deterministic AI tool calling.
Domain-Driven Design (DDD) & Clean Architecture in PHP 8.4 and Symfony 7.2
Architectural blueprint for isolating domain logic, modeling aggregates, and enforcing transactional integrity in high-stakes Symfony monolithic cores.
Kotlin Multiplatform (KMP 2.1) vs TWA vs Capacitor: Enterprise Mobile Decision Matrix
A pragmatic engineering evaluation of native logic sharing vs hybrid packaging for enterprise deployments across Google Play and Apple App Store.
Deterministic AI Agents: Architecture for Tool Calling Without Hallucinations
Production design patterns for orchestrating LLMs (Gemini, Claude, GPT) via strict JSON schema validation, deterministic tool execution, and stateful rollbacks.
My Terminal
Explore my stack, projects, architecture, and engineering background through real-time terminal commands.
Frequently Asked Questions & Architecture
Fact-based technical answers regarding architectural decisions, core capabilities, and operational availability.
Who is Angel Velasquez and what is his professional background?
Angel Rafael Velasquez Gonzalez (Angel Velasquez) is a Senior Software Engineer & AI Solutions Architect with over 10 years of experience delivering production software. He specializes in enterprise backend systems (PHP 8.4, Symfony 7.2, DDD), production mobile deployments on Google Play and Apple App Store (Kotlin, KMP, TWA, Capacitor), and deterministic applied AI workflows.
What technologies and frameworks define his core architectural stack?
His stack includes: PHP 8.4, Symfony 7.2, Domain-Driven Design (DDD), Clean Architecture, CQRS, and relational databases (PostgreSQL, MySQL); mobile: Kotlin 2.1, Jetpack Compose, Kotlin Multiplatform (KMP 2.1), Capacitor 6/7, and Android TWA; AI: Gemini 3.7 Flash, Claude, and OpenAI APIs utilizing deterministic Tool Calling and strict Zod JSON Schema validation; and infrastructure: Astro 5 SSG, Cloudflare Pages, Docker, and Linux.
What is his track record in mission-critical transactional backend systems?
He has modernized and engineered high-stakes transactional monoliths, notably for a French enterprise wealth and pension platform. By establishing DDD bounded contexts and clean database transactions, he achieved +99.98% operational uptime, 0 data corruption incidents, and significantly reduced query latency for financial settlement calculations.
How does he approach mobile engineering across iOS and Android?
He tailors mobile architecture to business objectives: from pure native Android apps using Kotlin and Jetpack Compose (MacMirror, Blumax) to cross-platform logic sharing with Kotlin Multiplatform (Wiser Meeting) and enterprise hybrid deployments with TWA and Capacitor (Panaservice). He manages full store lifecycles for Organization developer accounts across Google Play and Apple App Store (including Unlisted Distribution and Xcode Cloud CI/CD).
How does he operationalize applied AI and LLM agents in production?
He eliminates conversational hallucinations by treating LLMs strictly as semantic parsers and deterministic tool orchestrators. All tool executions require schema-validated JSON inputs and outputs, providing verifiable transaction safety and predictable integrations with enterprise APIs.
Is Angel Velasquez available for consulting or senior engineering roles?
Yes. Angel Velasquez is open for system architecture consulting, mobile strategy advisory, and senior engineering roles globally (remote). Inquiries can be submitted via email at angelvelasquezdev@gmail.com or through LinkedIn at linkedin.com/in/angelvelasquezdev.
Let's Discuss Your Project
Available for Senior Software Engineering roles, system architecture consulting, and applied AI implementations.
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