Juan Carlos Angulo
Software Engineer & Technical SEO Consultant
I'm Juan Carlos Angulo, a Software Engineer and Technical SEO Consultant based in Lima, Peru, with over four years of professional experience. My work sits at the intersection of software development and search engine optimization: technical SEO audits (crawlability, Core Web Vitals, Schema.org, indexation) combined with full-stack development in Next.js and Payload CMS. I help businesses grow their organic visibility by fixing issues directly in the code, no intermediaries involved. I also run juan-tech.com, a bilingual technical blog for developers and tech professionals across Latin America and Spain.
Expertise
Education & Certifications
Software Engineering
Universidad Peruana de Ciencias Aplicadas (UPC)
May 2022 – Aug 2028
IT Technician
Universidad Politécnica Territorial del Estado Bolívar
Feb 2018 – Aug 2020
Experience
Senior Tech SEO Analyst
aprendoclub
Coach for the SEO + AIO Diploma program at aprendoclub, the AI-marketing academy founded by Arianna Lupi. Mentors Spanish-speaking students becoming SEO specialists. More info: https://www.aprendoclub.com/diplomado
Nov 2022 – Feb 2026
Technical SEO Specialist
AprendoSEO
Jan 2022 – Sep 2022
Web Developer
Cripto Avances & Nakama Digital
Speaking Events
SEO + AI Workshop in Lima (by DinoRANK)
Lima, Peru · 18 attendees
A 4-hour workshop co-taught with Arianna Lupi (SEO Consultant / SEO Instructor / Founder), with 18 attendees including professionals, marketers, entrepreneurs, and SEOs. Covered AI-assisted keyword research, AI-assisted outlines and briefs, and AI-assisted SEO audits, using DinoRANK (aprendoclub’s official suite). Organized in Lima, Peru, together with Lm Marketing (SEO Agency).
With Arianna Lupi
Learn moreCaracas SEO Fest
Caracas, Venezuela · 100 attendees
Venezuela's first SEO conference, held in Caracas with 100 attendees. Focused on sharing Google-ranking knowledge, strategies, and tools with experts and entrepreneurs from across the region.
Learn morePosts
Algorithms and Data Structures 2026: The Engineer's Foundation
Core algorithms and data structures are the building blocks of efficient software. Learn how to choose the right tools to optimize data processing and system response time in high-traffic applications.
CS Fundamentals
Big O Notation 2026: Mastering Algorithmic Complexity
Big O notation is the language of algorithm efficiency. This guide covers how to analyze time and space complexity, helping you build scalable and performant code for modern technical systems.
CS Fundamentals
Algorithm Complexity 2026: Evaluating Performance Limits
Predicting how your code scales is critical for large-scale systems. We go beyond Big O notation to explore practical performance bottlenecks and optimization strategies for 2026"s technical landscape.
CS Fundamentals
SQL vs NoSQL 2026: Data Management Strategy
The choice between relational and non-relational data is more important than ever. We compare SQL and NoSQL databases for 2026 use cases, analyzing consistency, scalability, and performance trade-offs.
Development
Sorting Algorithms 2026: Efficiency in Data Organization
Sorting is a fundamental operation in computer science. We analyze the best sorting algorithms for 2026, comparing their time and space complexity to help you choose the most efficient approach for your data sets.
CS Fundamentals
Binary Trees 2026: Hierarchical Data Mastery
Binary trees are essential for efficient data retrieval. This guide covers the theory and implementation of binary trees in 2026, exploring their application in everything from file systems to high-performance search indices.
CS Fundamentals
Database Design 2026: Keys for Modern Structure
A database's structure determines the application's future. This guide outlines how to design scalable schemas in 2026, focusing on relationships, indexing strategies, and performance considerations for high-volume data.
CS Fundamentals
Database Normalization 2026: Integrity and Speed
Normalization is the backbone of relational database design. Avoid data redundancy and maintain integrity by following standard normal forms, ensuring your data remains clean and fast in enterprise environments.
CS Fundamentals
Dynamic Programming 2026: Efficiency in Complexity
Dynamic programming is the key to solving complex overlapping problems. Discover the principles of memoization and tabulation to reduce algorithmic complexity and build highly efficient systems in 2026.
CS Fundamentals
E-E-A-T Guide 2026: Authority and Trust in the AI Era
E-E-A-T is Google's primary metric for content quality. In 2026, demonstrating real-world experience and verifiable authorship is critical to surviving AI filtering and ranking in competitive technical niches.
SEO Strategy
Internal Linking Guide 2026: Building Topical Authority with Clusters
Internal linking is the backbone of crawlability and topical authority. This guide explains how to implement a hub-and-spoke model, optimize anchor text for semantic relevance, and use internal links to signal hierarchy to search engines in 2026.
SEO Strategy
Keyword Research Guide 2026: From Search Volume to Entities
Keyword research is no longer just about volume. This guide focuses on identifying semantic entities, understanding intent qualifiers, and building topic maps that cover the entire customer journey.
SEO Strategy
SEO Copywriting 2026: Writing for AI Overviews and Humans
SEO copywriting today requires balancing E-E-A-T principles with semantic optimization. This guide covers how to write for AI Overviews (SGE) while maintaining high conversion and engagement for human readers.
SEO Strategy
User Experience Explained: A Complete Guide to UX Concepts
User experience (UX) shapes how people perceive and interact with digital products. This guide covers the core UX concepts and the practices that actually move customer satisfaction and brand loyalty.
Development
Mejores Cursos de SEO en Español 2026: Guía Comparativa
La formación en SEO ha evolucionado hacia la especialización técnica y estratégica. Analizamos los cursos más actualizados del mercado hispano, desde fundamentos hasta SEO avanzado e IA aplicada al marketing.
SEO Strategy
¿Qué es CSS? Todo lo que necesitas saber sobre Hojas de Estilo en Cascada
Development
Tablas hash: Estructuras clave para un manejo eficiente de datos
Las tablas hash son estructuras de datos que almacenan pares clave-valor y permiten búsqueda, inserción y eliminación en tiempo casi constante mediante una función hash. Esta guía cubre su funcionamiento, la gestión de colisiones y ejemplos prácticos de aplicación en sistemas informáticos reales.
CS Fundamentals
Technical SEO for Non-Developers 2026: No Fear Guide
Technical SEO doesn't require a degree in computer science. This guide explains indexing, site structure, and speed metrics in plain language, empowering you to make strategic decisions for your web presence.
Technical SEO
Web Performance Guide 2026: Technical Optimization for SEO
Web performance is a fundamental ranking factor in 2026. This guide details how to optimize the critical rendering path, implement advanced caching strategies, and use resource hints (preload, preconnect) to significantly improve loading speed and user satisfaction.
Technical SEO
Core Web Vitals Guide 2026: Optimizing LCP, CLS, and INP
Core Web Vitals are direct ranking signals in Google's algorithm. For 2026, we focus on minimizing layout shifts and optimizing interaction responsiveness to meet the new INP standards and provide a flawless user experience.
Technical SEO
Robots.txt Best Practices 2026: Strategic Crawling Control
The robots.txt file is the primary gateway for search engine bots. In 2026, it is critical to use strategic allow/disallow rules and provide clear sitemap paths to optimize your crawl budget and keep non-public sections private.
Technical SEO
Schema Markup Guide 2026: Mastering JSON-LD
Schema markup is the vocabulary of the semantic web. This guide focuses on technical implementation using JSON-LD, ensuring your content is fully understood by AI search engines and optimized for rich results.
Technical SEO
SSR vs CSR for SEO 2026: The Definitive Ranking Guide
The choice between SSR and CSR has profound implications for SEO and user experience. This guide analyzes how search engines crawl different rendering patterns and why a hybrid approach is often the best solution for modern web apps.
Technical SEO
Automating XML Sitemaps 2026: Mastering Technical SEO
XML sitemaps are the roadmap for search engines. In 2026, manual sitemaps are obsolete. Learn how to automate the generation process to ensuring that 100% of your critical pages are indexed and refreshed instantly.
Technical SEO
Headless CMS SEO: Complete Guide for Better Search Visibility
Technical SEO
Topic Clusters for SEO: Optimizing Your Content Architecture
Technical SEO and content strategy meet in topic clusters. Organizing your site into logical, hierarchical clusters improves crawl efficiency and helps search engines discover the semantic relationship between your pages.
SEO Strategy
Estrategia de Contenidos SEO 2026: Dominando la Intención de Búsqueda
Una estrategia de contenidos moderna no se basa en volumen, sino en relevancia semántica. En 2026, el éxito depende de cubrir el mapa de entidades de tu nicho y satisfacer la intención del usuario con datos únicos y valor añadido.
SEO Strategy
Estrategia SEO Global 2026: Arquitectura, Contenido y Autoridad
El SEO en 2026 es holístico. Esta guía detalla cómo integrar la optimización técnica, el desarrollo de topic clusters y la construcción de identidad de marca (E-E-A-T) para superar las actualizaciones de algoritmos de IA.
SEO Strategy
Guía de SEO Off-Page 2026: Más allá del Link Building
El SEO Off-Page en 2026 no es solo conseguir enlaces; se trata de construir una reputación de marca verificable. Explicamos cómo el Digital PR, las menciones sin enlace y la autoridad de nicho impactan en los rankings.
SEO Strategy
Pillar Page SEO 2026: Optimizing High-Authority Content
SEO for pillar pages requires balancing broad keyword coverage with specific internal link signals. This guide covers how to structure your pillar page to capture high-volume head terms while supporting long-tail satellites.
SEO Strategy
Data Structures: An Overview and Their Applications
Data structures are what let a program organize and manage information efficiently. This article walks through arrays, linked lists, trees, and graphs, and how the right choice can seriously boost your application's performance.
CS Fundamentals
Binary Search Tree: A Guide to In-Order Traversal
CS Fundamentals
Dynamic Programming: A Practical Guide to Solving Complex Problems
CS Fundamentals
Graph Algorithms Explained: Your Comprehensive Guide
CS Fundamentals
Heap Data Structure Explained: Types and Algorithms
CS Fundamentals
Merge Sort Python: A Complete Guide to Implementation
CS Fundamentals
Queue Data Structure: Core Concepts and Operations in Programming
CS Fundamentals
Quicksort Python: An Informative Guide to Implementation and Optimi...
CS Fundamentals
Space Complexity Explained: An Informative Guide
CS Fundamentals
Time Complexity Explained: The Basics and Importance
CS Fundamentals
Tree Traversal Techniques Explained: A Comprehensive Guide
CS Fundamentals
Astro vs Next.js: Key Differences Explained
Development
Headless CMS Comparison: Pros and Cons vs WordPress
Development
Next.js CMS: Unlocking Modern Web Development
Development
Payload CMS: A Modern Solution for Content Management
Development
SEO Audit: A Complete Guide and Practical Strategy
Technical SEO
Next.js SEO Best Practices for Optimal Visibility
Technical SEO
On-Page SEO: A Complete Guide and Practical Strategy
Technical SEO
Structured Data SEO: Everything You Need to Know to Improve Your Site
Technical SEO
Technical SEO Checklist for 2026: Your Complete Guide
Technical SEO
Case Studies
Scaling educational legal content to over 86,000 annual organic clicks for a criminal defense firm
Legal Services — Criminal Defense
+83% YoY clicks
More than doubling organic traffic for a family-run artisan hydraulic tile manufacturer in Spain
Manufacturing / Artisan Building Materials
+143% YoY clicks
Quadrupling organic traffic for an Atlanta immigration law firm in one year
Legal Services — Immigration
+309% YoY clicks
From zero to the first real organic clicks for a local workshop business
Education / In-person workshops
0 → 56 clicks
From near-zero visibility to a year of sustained growth for a urologist
Healthcare — Urology
+406% YoY clicks
Doubling organic traffic for a kids’ financial-literacy platform
EdTech / Kids’ Fintech
+104% YoY clicks
Migrating to Next.js without losing organic traffic
E-commerce
+68%