Luis Fernando
Romero Calero
Engineer, product builder, musician, writer. Based in Bangkok.
Technical Lead at Skills Union and Cursor Ambassador in Bangkok
Cursor Ambassador in Bangkok - Cursor & AI training
I organize free Cursor community events and also offer private trainings for individuals and enterprises.
Luis Fernando
Romero Calero
Engineer, product builder, musician, and writer.
Based in Bangkok.
Technical Lead at Skills Union and Cursor Ambassador in Bangkok
Cursor Ambassador in Bangkok - Cursor & AI training
I organize free Cursor community events and also offer private trainings for individuals and enterprises.
Worked in
Tools
Building tools that help people focus on what matters.
Authentic Timer
A clean timer for gentle productivity
In November 2024, while enduring a sickness that limited my daily quality of life, I needed to manage my time carefully in the very few hours I could focus. I searched for a clean, uncluttered timer that felt safe, but kept jumping between apps instead of having one productivity hub.
That's when I conceived an "authentic timer", helping me prepare focused sessions of 25, 30, 45, or 50 minutes to tackle books, emails, paperwork, with everything listed and timeboxed.
A year later, after collecting feedback and studying productivity, the nervous system, and ADHD, it became something I was proud to share with the world.
Ubon
Peace of mind for vibe-coded apps
Ubon is a pragmatic scanner for React/Next.js, Vue, and Python projects. It complements your linter by catching issues that slip into production: hardcoded API keys, broken links and assets, risky eval patterns, basic accessibility misses, and dependency vulnerabilities. A small safety net with CI-friendly JSON/SARIF and pre-commit hooks, built for the age of AI-generated, vibe-coded apps.
Rosemary.js
Elegant JavaScript utilities
Open-source JavaScript library published on npm. Simplifying complex development workflows with elegant solutions.
Clean Serve
Essays on prompting and AI-assisted workflows
A personal publication where I share practical writing on prompting strategy, AI coding workflows, and mental clarity for builders. First post already live.
Cursor Bangkok
Official Cursor Ambassador. Bringing builders together through events and community.
Official Cursor events in Bangkok
Special community meetup featuring Nick Miller from the Cursor team. Cafe-style co-working, office hours, and Q&A. Free Cursor credits and merch.
Register on LumaCo-working day at a 24/7 space near Chatuchak. Build with Cursor users, free credits and drinks.
Co-working day at a Latin American-inspired cafe in Khlong Toei. Co-hosted with Kenny.
41 attendees. Beginner-friendly workshop with live demos and team builds.
65 attendees. Community meetup with demos and stories from builders in Bangkok.
Professional Experience
14+ years of technical leadership across major corporations
Technical Lead
Working directly with the CEO and Head of Product on projects for academic institutions in Singapore and Qatar, and a global skills/taxonomy tool. Leading a team of developers and driving digital transformation into advanced AI-driven workflows and technical strategy.
Technologies
Key Achievements
- Leading technical strategy across multiple edtech projects
- Digital transformation into AI-driven workflows
- Building global skills/taxonomy tool
Senior Frontend Developer
Led UI development for mission-critical fleet management and runway optimization system. Conducted comprehensive UI audits and presented improvements to management.
Technologies
Key Achievements
- Optimized aircraft scheduling and route planning systems
- Presented UI audits to management with approval
- Enhanced system efficiency and user experience
Technical Lead (Fullstack)
Led the Navify marketplace migration from Angular to Next.js. Delivered PoC as blueprint for migration and coordinated with team members.
Technologies
Key Achievements
- Delivered migration PoC blueprint
- Coordinated team through agile methodologies
- Project on track for 2025 release
Solution Architect
Enhanced internal supply chain web applications across Asia, EMEA, and North America. Supervised and mentored front-end team members.
Technologies
Key Achievements
- Successful launch in several Asian countries by July 2022
- Harmonized UI experiences across EMEA and North America
- Mentored front-end team members
Senior Software Engineer
Led migration of partner portal UI from PERL templates to modern Vue.js solution. Conducted reverse engineering of legacy code.
Technologies
Key Achievements
- Successfully migrated legacy PERL to Vue.js
- Contributed to new partner portal release
- Effective stakeholder communication
Senior Frontend Developer
Collaborated with major companies across diverse industries including fintech, government, and healthcare.
Technologies
Key Achievements
- Deloitte: Led governmental greenfield project (React, Node.js, Neo4J)
- ClearBank: Developed greenfield banking platform (Vue.js)
- Tata/Verizon: Created e-commerce prototypes and Node.js microservices
Beyond Code
Software Engineering
With 14+ years of experience, I've worked across diverse industries from aviation to fintech. My expertise spans technical leadership, solution architecture, and full-stack development. I specialize in modernizing legacy systems and building scalable applications.
Core Technologies
Industries
Let's Connect
Currently available for freelance projects and interesting opportunities. Let's build something meaningful together.