About
About
Rafael Grassmann, senior developer
I’ve been developing for the web since 1998 — I started at Utah Internet, then spent 10 years at Art Studium and 13 as partner and Head of Development at SERI.E DESIGN, leading the technical team on website and e-commerce projects for brands such as Stanley, Komeco, CVC Corp., Assa Abloy, Cavalera and Nutty Bavarian.
Based in São Paulo, Brazil. Brazilian company (CNPJ) active since 1991.
Working in English · São Paulo, Brazil (UTC-3), overlapping with US business hours.
- Name:Rafael Grassmann
- rafael@rgrassmann.com.br
- São Paulo, Brazil
What I do
What I do
Websites and front-end
HTML, CSS and JavaScript, or a CMS such as WordPress with theme development. From approved layout to live site: structure, responsiveness, performance and technical SEO.
WooCommerce and e-commerce
Catalog, payment methods, shipping, and integrations with ERP and management systems. A store that works, not just one that looks good.
Front-end from Figma
HTML, CSS and JavaScript faithful to the layout your designer approved. No improvising and no “that can’t be done.”
Maintenance and technical support
On-call technical support for the agency’s portfolio of sites: updates, fixes, backups, SSL, DNS and server. Monthly contract.
Automation
Automations built with n8n and the WhatsApp API for processes that go beyond the website. Workflows that keep running on their own after delivery.
Stalled-project rescue
I take over third-party code, diagnose it and get it moving again. Blown deadlines, a developer who vanished, a delivery that won’t close.
Technical consulting for the agency
Platform choice, architecture and scope sizing before you sell the project.
Experience
Experience
Career
since 10/2024
DGrow
Partner and Senior Developer
White-label development and technical consulting for marketing agencies and design studios. WordPress, WooCommerce, integrations and stalled-project rescue.
2011 - 2024
SERI.E DESIGN
Partner and Head of Development
Leading the technical team in front-end and e-commerce development for brands such as Stanley, Komeco, Nutty Bavarian and Assa Abloy. From implementing new platforms to day-to-day operations support.
2001 - 2011
Art Studium
Partner and Manager
Creation of graphic materials, websites and visual productions, with client, project and team management.
1998 - 2000
Utah Internet
Web Developer and IT Instructor
Where it started: building websites and teaching IT courses as an outsourced instructor for SENAI, Brazil’s national industrial training service.
Additional Information
Coding
Front-end Development
Solid knowledge of HTML, CSS, PHP and JavaScript (and related libraries). Experience creating and maintaining development, staging and production environments for applications.
Technology
IT Infrastructure
Experience configuring servers for application hosting, registering domains, managing DNS records and handling SSL/TLS certificates for web applications.
Coding
Version Control
I work with Git in a branching workflow, versioning what is delivered and keeping development, staging and production environments separate.
Marketing
Content and E-commerce Management
Structuring catalogs, category trees, product descriptions and information presentation — the work that keeps an e-commerce operation running once the site is live.
192 projects
192 projects
Each one passed directly through my hands in 13 years as partner and Head of Development at SERI.E DESIGN — from WordPress and WooCommerce to the leading Brazilian and enterprise e-commerce platforms (Wake, Tray, Nuvemshop, Jet, VTEX, Linx).
56
FBits/Wake
49
Tray
27
Nuvemshop
21
Jet
17
WordPress
8
VTEX
5
Linx
Plus operations on Rakuten and Mercado Shops.
Brands served include: Stanley 1913, CVC Corp., Assa Abloy/Yale, Komeco, Cavalera, We Pink, Nutty Bavarian, Mercado Pago, Unimed, Flextronics, Piticas, Kidy, Just Approve, RodeoWest, Mundial Calçados, i2Go, Shopping da Bahia and Metagal.
Projects
Projects
Some of the 192 projects that passed directly through my hands at SERI.E DESIGN, where I was partner and Head of Development.
Also Komeco, Mercado Pago, Unimed, Piticas, Kidy, Just Approve, RodeoWest, Mundial Calçados, Metagal, Casa Bergan and Kikos, plus more than 200 stores on Mercado Shops.
Get in touch
Get in touch
Have a project in mind? Send me an email.
Working in English · São Paulo, Brazil (UTC-3), overlapping with US business hours.
rafael@rgrassmann.com.br