Heber Josías

Code & Data

Hi, I'm Heber.

Head of Data
& Front-End Engineer

10 years in MarTechMexico City

I help brands make smarter decisions by connecting data, technology and user experience.

I've led data and development at companies like Mindgruve, Improvado, Jellyfish, 42 and IGNI, delivering for global brands across the US, Canada, the UK and Mexico.

I always want to learn more, do more, and be more.

Start a project Let's talk about your project. Book an intro call
WhatsApp+52 55 2732 7832 Emailinfo@heberjosias.com

Credentials

Certifications & expertise

What each credential brings to your project.

  • Certified

    JavaScript Professional

    Modern JavaScript for fast, interactive front-ends and web apps.

  • Webflow

    Webflow

    CMS-driven sites your marketing team can update without developers.

  • Google

    Google Cloud

    Cloud infrastructure and data pipelines that scale with your product.

  • Google

    Google Data Analytics

    Clean data, analysis and dashboards that answer real business questions.

  • Google

    Google AI Professional

    Applying AI to everyday workflows to save time and scale output.

  • Google

    Conversion Optimization

    Testing and improving funnels so more visits turn into customers.

  • AppsFlyer

    Mobile Measurement

    App install and in-app attribution across paid channels.

  • Anthropic

    Claude

    Building with Claude, AI agents and the Model Context Protocol.

What I do

My main services

01

End-to-End Data Analytics

Measurement, data engineering, dashboards and predictions — one practice, end to end.

  • Measurement & tracking
  • Data engineering
  • Dashboards & insights
  • Predictive models
02

Mobile & Web Development

From marketing sites to full products: bookings, payments, CRMs and apps people install.

  • Websites & ecommerce
  • Web apps & PWAs
  • CRMs & internal tools
  • Landing / MVP
03

Immersive 3D Virtual Experiences

Walkable 3D tours that sell a space before anyone visits.

  • Real estate
  • Event & convention centers
  • Schools & campuses
  • Retail & offices

✦ Project

Explore projects

10 of 40+ projects

Immersive 3D Virtual Experiences 2 ↗

Centro de Convenciones WTC · Virtual Tours

3D virtual tours

31 virtual tours across three floors of Mexico City's WTC convention center, built into the venue's own site.

  • Centro de Convenciones WTC
  • 31 tours
  • 360° capture

Sala Pepsi Black · Virtual Tours

3D virtual tours

High-quality 3D capture of the concert hall and dressing rooms as interactive virtual tours.

  • Pepsi Center WTC
  • 3 tours
  • 360° capture
End-to-End Data Analytics 3 ↗

Unified Paid Media Data Model

Data model & dashboards

Twelve ad platforms unified into one data model — spend, sales, clicks, views and watch time comparable across every channel.

  • Confidential · multi-channel advertiser
  • BigQuery
  • SQL

Predictive ROAS for Amazon Ads

Predictive models

Forecasting ROAS and success for the next 15 days — by campaign, product and creative — so budget moves before results slip.

  • Confidential · Amazon advertiser
  • BigQuery
  • SQL

Measure Analytics MCP

Open-source AI tooling

An open-source MCP that lets AI assistants audit and query GA4, GTM, BigQuery and Consent Mode — safely, in plain language.

  • Open source · Apache-2.0
  • Python
  • MCP
Mobile & Web Development 5 ↗

ROD Cycling

Progressive web app

An installable web app for an indoor cycling studio: bookings, payments and class access.

  • ROD Cycling
  • Next.js
  • React

42 Agency

B2B SaaS websites

Led the web team of a B2B SaaS growth agency: high-performance sites and landing pages for clients in the UK, US and Canada.

  • 42 Agency — eSub, Charma, Afresh, Evolve, Gander, Coachbar…
  • Webflow
  • HubSpot

Lead Monat · CRM

Lead CRM & product catalog

A CRM for an independent Monat partner: leads arrive through a hair-diagnosis test, stay centralized, and get followed up with the right products.

  • Independent Monat Market Partner
  • Next.js
  • React

Pepsi Center WTC & Sala Pepsi Black

Venue websites

Websites for two Mexico City venues where fans find the next show and buy tickets in a couple of taps.

  • Pepsi Center WTC
  • Webflow
  • GA4

Cometa

Educational 3D game

A little world to learn, play and discover — a 3D game for ages 3–5, built so a child's first screen is one designed for them.

  • TypeScript
  • React Three Fiber
  • Three.js

Client reviews

What people say

Some recommendations from teammates, leads and clients on LinkedIn.

“Having Heber as a leader at Jellyfish while he served as Senior Data Analytics Manager was an exceptional experience. Heber is a remarkable professional who combines impressive technical expertise in MarTech, GA4, and BigQuery with a warm, approachable personality. He consistently led by example, demonstrating how to make sound decisions that deliver the best outcomes for both clients and the broader organization. His talent for bridging the gap between data insights and real business growth, coupled with his constant support and mentorship, made him an invaluable leader. I wholeheartedly recommend Heber to any team looking for a top-tier data strategist and inspiring leader.”
SM Santiago Marín Data Analytics Manager
“Heber is a thoughtful, smart & talented web developer. He was instrumental in building the web team at 42. He not only has extensive knowledge of web technologies & platforms, he also understands the broader business context of the work he does & how he can go beyond his role to create a larger impact. Heber often comes with creative solutions to problems & takes ownership of implementing them. He helped mentor the team & worked closely with our design team to bring their incredible designs to life on the web. I am incredibly lucky to have worked with Heber & I would highly recommend him.”
KR Kamil Rextin Founder, 42 Agency
“Heber is one of the best professionals I have ever worked with. He not only has excellent technical knowledge across analytics and Business Intelligence, but also a strategic mindset that helps maximize goals and objectives. He is constantly looking to improve the team, helping others not just to deliver, but to grow personally and professionally.”
OC Omar Chávez Bautista Project Manager · Performance & MarTech
“Trabajar con Heber me permite ver de primera mano su liderazgo y la forma en que gestiona al equipo. Tiene una gran capacidad para motivar, alinear objetivos y generar un ambiente de trabajo colaborativo, lo que se refleja en resultados sólidos. También destaca por la relación que construye con el cliente: entiende bien sus necesidades y se enfoca en que las soluciones realmente aporten valor. En lo técnico, tiene una base muy sólida. Cuenta con experiencia en desarrollo web, analytics y análisis y visualización de datos, lo que le permite tomar buenas decisiones y proponer soluciones de impacto. Algo que valoro mucho es su actitud propositiva: constantemente está buscando e impulsando nuevas tecnologías para mejorar la forma en que trabajamos. Es un líder muy completo, con un buen balance entre lo técnico y lo humano.”
RM Ricardo Mora Reporting Manager, TV Azteca
“It's rare to come across someone who is both a total expert in their field and a genuinely incredible person. Working with Heber means you're in good hands; not only does he have deep technical knowledge, but he also puts his heart into everything he does. As a leader, he's the type to jump into the trenches with his team, and when it comes to clients, he has a way of communicating with such clarity that it's honestly impressive. If he's on your team, you've already won.”
AL Alain Lugo Sr. Analytics & Optimization Manager, Jellyfish
“As Lead Developer, Heber consistently impressed the team with his technical expertise, creativity, speed, and dedication to delivering high-quality work. He was always willing to go above and beyond to troubleshoot issues and find solutions that worked for everyone. He has a strong understanding of not only development, but also marketing, and how those two interplay with each other. During his time at 42 Agency, Heber also took on an important mentorship role for a junior developer which supported him in his professional growth and contributed greatly to the company as a whole.”
MD Mallory Donaldson Project Manager, 42 Agency
“I have had the absolute pleasure of collaborating with Heber Josías, and I can confidently say he is an outstanding Leader & Senior Manager. Every time we worked together, he brought an incredible attitude, a sharp intellect, and a genuine willingness to help. What truly sets Heber apart is his team-first mentality. He is an excellent leader and collaborator who is highly professional and always ready to support his colleagues. He consistently delivers brilliant, data-driven insights that add real value to the table. Beyond his impressive technical and analytical skills, he is a fantastic person to work with and has become a great friend. Any team would be incredibly lucky to have him.”
AG Areli García Sr CRM & Lifecycle, DoorDash
“Heber logra compaginar el conocimiento técnico con la necesidad y visión de negocio del cliente de una forma poco común actualmente, ya que no se basa en métricas de adopción de productos y servicios ni en el cumplimiento del gasto, sino en la relevancia, el impacto y la madurez de todo el ecosistema de nuestros clientes.”
RA Roberto Altieri Cuervo Strategic Account Manager
“I had the pleasure of working with Heber at Improvado. He is smart, proactive, and a true self-starter who works exceptionally well under pressure and is always cooperative and supportive of his teammates. Heber is also committed to continuous learning and always stays up to date with the latest technologies. I truly enjoyed working with him, and any team would be fortunate to have him. I highly recommend Heber!”
MA Mustapha Abdelkarim Senior Data Analyst
“It was an absolute pleasure to work with Heber and share projects and achievements with him, as I consider him a well-rounded professional. Not only does he have extensive technical knowledge in specific areas of data and analytics, but he also contributes strategic insight when it comes to managing accounts and solving problems. Heber is also a great person and leader, as evidenced by the people he has worked with — whether as their direct supervisor or when collaborating with other departments.”
DO Diego Olivares Delgado Customer Success, Insider One
“Heber is a proactive developer with strong marketing knowledge, excelling in HubSpot landing pages, email marketing, and Webflow development. A remarkable self-learner and team teacher, he consistently enhances our work by suggesting innovative strategies and analytical approaches for assessing landing page performance. Heber's collaborative and supportive nature makes him an invaluable asset to any team, contributing significantly to 42 Agency's productivity and project quality.”
AC Alejandra Céspedes Creative Director, 42 Agency
“Heber es uno de los profesionales más comprometidos que he conocido. Colaboramos juntos dentro de uno de los proyectos más importantes de Jellyfish y puedo decir que fue un mentor y pieza fundamental para que la relación con los clientes se mantuviera a flote en los momentos más complicados. Admiro su conocimiento, actitud y compañerismo.”
AM Alyn Morales Account Manager · Paid Media, Jellyfish
“Heber is truly a standout as a developer. He combines technical know-how with a creative touch, ensuring projects are both visually appealing and perfectly functional. What really sets Heber apart is his ability to solve problems, permanently learn and teach others how to overcome blockers, and collaborate efficiently. He respects the vision of both designers and developers, and does his best to bring form and function to life. Any business would be lucky to have him.”
SC Sebastian Cuervo Copy & Content, 42 Agency
“He conocido a Heber ya que trabajamos en conjunto en varios proyectos. Su proactividad, su dedicación y conocimiento del producto han sido fundamentales para apuntalar la estrategia comercial de la empresa. Sin duda alguna Heber será una adición fundamental para cualquier empresa. Un profesional al 100%.”
JG Jorge G. Domínguez Commercial Lead

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Heber Josías

Code & Data

Let's start building your tomorrow, today.

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