Available for selected projects
I help teams and businesses turn real problems into clear, usable software: SaaS platforms, internal tools, APIs, and web/mobile experiences.
01 / Capabilities
Outcome-oriented capabilities — not a technology laundry list.
Apps and sites with a clear interface, solid performance, and a technical base that can absorb business change.
Multi-user systems with auth, roles, billing, or business workflows — designed to run day to day.
Dashboards, back offices, and operational flows that cut manual work and give the team visibility.
02 / Problems
Common situations where I deliver a concrete solution — without unnecessary jargon.
Problem
You have a clear idea, but not a usable product to validate with real users.
Solution
We define the MVP, prioritize what matters, and ship it to a real environment where you can test and learn.
Problem
The team runs on spreadsheets, chat threads, and processes that do not scale.
Solution
I build internal tools and automations aligned to the real work flow.
Problem
The current product is holding the business back: slow to change, hard to maintain, or unreliable.
Solution
I stabilize what is critical, improve architecture where it hurts, and ship changes without breaking what already works.
Problem
Systems do not talk to each other, and the team wastes time copying data by hand.
Solution
I design APIs, webhooks, and integrations that connect tools with clear contracts.
Problem
Visibility is missing: no one can see the real state of the business or operations.
Solution
We set up dashboards and operational views with the indicators that actually matter for decisions.
Problem
You want AI in the product, but without a clear use case or cost control.
Solution
We scope the problem, design the flow, and integrate only where it adds measurable value.
Problem
The product needs to reach mobile without doubling the entire development effort.
Solution
I assess whether a lean native app or a shared mobile experience with the existing stack makes more sense.
03 / Solutions
Solutions aimed at real operational and growth problems. Technology comes after the outcome.
Problem
Centralize properties, leads, agents, and follow-up in one platform instead of spreading the operation across spreadsheets and WhatsApp.
Solution
Platforms for listings, property management, real-estate CRM, appointments, dashboards, and public catalogs connected to the backoffice.
Capabilities
Property listings · Property management · Leads & CRM · Agents · Appointments · Dashboards · WhatsApp integrations · Public catalog
Centralize properties, leads, agents, and follow-up in one platform instead of spreading the operation across spreadsheets and WhatsApp.
Platforms for listings, property management, real-estate CRM, appointments, dashboards, and public catalogs connected to the backoffice.
Property listings · Property management · Leads & CRM · Agents · Appointments · Dashboards · WhatsApp integrations · Public catalog
View solution →Custom commerce when a template is not enough: own workflows, integrations, and real business operations.
Storefronts, catalog, cart, checkout, payments, inventory, orders, customer accounts, and analytics — especially for non-standard workflows and integrations.
Storefront · Catalog · Cart & checkout · Payments · Inventory · Orders · Admin · Customer accounts
View solution →Stop running appointments only on WhatsApp. Booking, availability, professionals, and locations in one system.
Ideal for barber shops, salons, spas, clinics, and service professionals who need scheduling, customers, notifications, and rebooking.
Online booking · Calendar · Availability · Customers · Professionals · Locations · Notifications · WhatsApp
View solution →Digital products for training, progress, community, and habits — web, mobile, or both.
Plans, tracking, nutrition, events, challenges, athlete profiles, and mobile apps aligned with prior fitness/community product experience.
Workouts · Training plans · Progress · Goals · Nutrition · Communities · Events · Challenges
View solution →Multi-user applications with permissions, dashboards, and operational workflows ready to grow.
From product core to backoffice, APIs, and integrations — focused on daily operations, not just demos.
Multi-user apps · Permissions · Dashboards · Subscriptions · Operational workflows · Backoffice · APIs · Integrations
View solution →AI applied to concrete flows: assistants, automation, search, and processing — with clear boundaries.
OpenAI integrations and AI features inside existing products, aimed at reducing repetitive work and improving decisions.
AI assistants · Workflow automation · Intelligent search · Content processing · Document analysis · Recommendations · OpenAI · In-product AI
View solution →Learning experiences, student progress, and educational content on web or mobile.
Tutoring, assessments, progress tracking, and AI-assisted learning when it adds real value.
Tutoring · Learning experiences · Student progress · Assessments · Educational content · AI-assisted learning · Mobile learning
View solution →Discovery, profiles, and contact (or transactions) between supply and demand, with clear administration.
Search, filters, profiles, ratings, booking or contact flows, and admin tools.
Profiles · Search · Filters · Discovery · Contact / transactions · Booking · Ratings · Administration
View solution →04 / Experience
Products and systems I worked on as part of a team. Each case covers context, role, and what I contributed — without invented metrics or personal ownership claims.
SaaS / Product Engineering
Work completed as part of the ELSA360 team.
2024–presente
Full Stack Engineer
In production
The product needed to grow in functionality and consistency across web and mobile while keeping a scalable base aligned with sports-community needs.
Capabilities: Product · Frontend · Backend · Mobile · APIs · AI
Stack
TypeScript · Vue.js · Flutter · Node.js · NestJS · REST APIs · AI Automation
Enterprise platforms / Internal tools
Work completed as part of the Emtech team.
2025–2026
Full Stack Engineer
Completed
HR and operations teams needed connected modules for Talent OS, ATS, CRM, and the employee lifecycle, with less repetitive manual work.
Capabilities: Product · Frontend · Backend · APIs
Stack
TypeScript · Vue.js · Node.js · NestJS · REST APIs
Internal tool / Full Stack
Work completed as part of the Grupo Gestionet team.
2024–2025
Full Stack Developer
Completed
Internal users needed a reliable file-management platform with critical features, better performance, and a more maintainable foundation.
Capabilities: Product · Frontend · Backend · APIs
Stack
TypeScript · Node.js · Vue.js · MongoDB · MariaDB · Symfony
05 / Labs
Products and ideas I build on my own initiative. This is where I show product sense, execution, and judgment — without inventing users or metrics.
Booking / Services
Independent / Lab
2025–present
Founder & Full Stack Engineer
Lab / independent product
Barber shops, salons, spas, and service professionals lose time and appointments managing availability, customers, and locations through chat and memory.
Capabilities: Product · Frontend · Backend · APIs · Booking
Stack
TypeScript · Vue · Node.js · NestJS · PostgreSQL · APIs
04 / Process
A short, repeatable cycle: understand the problem, build what matters, measure, and adjust.
I clarify the problem, who it affects, and what success would look like. Without this, the rest is guesswork.
I scope the work, constraints, and the minimum viable architecture for a first delivery.
I implement in short cycles with frequent demos, so feedback arrives before fixes become expensive.
I take it to production with what is needed to operate: deployment, basic monitoring, and a clear support path.
I review real usage, prioritize the next cut, and improve without rewriting everything from scratch.
Tools I use often. I choose for the problem, not for the trend.
06 / About
I'm Luis Martínez — Mr Luis. A Full Stack Engineer with a product mindset: I combine engineering, clean architecture, and stakeholder collaboration to ship scalable software aligned with the business.
I have built SaaS products, HR/CRM platforms, internal tools, and web/mobile experiences. I work from discovery and functional definition through implementation, integrations, deployment, and continuous improvement.
07 / Let's talk
Share the context. I'll tell you clearly whether I can help — and how.