~/software-engineer
eduardo<castro>

Home / Engineering & systems

Full-Stack Software Engineer.

I build systems and integrations that connect e-commerce, payments, ERPs, logistics and data, from frontend through infrastructure.

view projects → get in touch view my CV
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// about

End-to-end engineering

about-me.md
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I'm Eduardo Castro, a Full-Stack Software Engineer with hands-on experience in e-commerce, integrations, APIs, data and automation.

My career started close to product and user experience and evolved into software engineering and systems architecture. I can understand the business problem, design the solution and carry the implementation from frontend through backend.

At Reise, I work across the digital ecosystem, connecting Shopify, ERP, payments, logistics, inventory and data. I also build internal applications, pipelines, dashboards and automation for real operational problems.

My experience as Co-founder & COO at Cecília Digital adds autonomy, technical execution and business perspective.

where-i-work.txt
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Based in Franca, São Paulo, Brazil.

Available for remote opportunities in Brazil and internationally.

me-online.links
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VIEW MY CV
// stack

Technologies I use

Tools I use to build interfaces, services, data systems and e-commerce operations.

// journey

Experience & Education

Technology & Development Analyst

Jan 2025 · Present
ReiseCurrent
End-to-end construction of Reise's digital ecosystem, including an in-house BigQuery data platform, a Node.js and Fastify API on Cloud Run, internal products in React and Next.js, operational automation and advanced Shopify Plus solutions.
Shopify PlusNext.jsFastifyBigQueryGCPSupabase

Co-founder & COO

Apr 2025 · Present
Cecília DigitalCurrent
Engineering and infrastructure for Shopify e-commerce. Architecture, development, migrations, integrations, automation and process definition, combining technical execution with operational and business perspective.
ShopifyLiquidERPPaymentsLogisticsOperations

Shopify Developer

Jan 2025 · Present
Stars EncodingCurrent
Building and evolving Liquid themes, migrating platforms to Shopify and integrating ERP, logistics and payments through APIs, alongside store maintenance and operational dashboards.
ShopifyLiquidAPIsSEOMigrations

UI/UX & Visual Designer

Jun 2024 · Jan 2025
Reise
User journey mapping, high-fidelity interface prototypes and design system maintenance, a foundation that now strengthens product and frontend decisions.
UI/UXFigmaDesign SystemProduct

Web Developer

Dec 2022 · Dec 2023
Contabilizaí Bank
Responsive interface development, application maintenance and collaboration on frontend architecture for banking user experiences.
HTML/CSSJavaScriptFront-end

Customer Specialist

Earlier experience
Magazine Luiza
Experience inside a large-scale e-commerce operation, close to the purchase journey, transactional issues and customer experience.
E-commerceOperationsCustomer Experience
// work

Featured projects

see all on GitHub →
// direct contact
Open to opportunities

Let's talk.

For Software Engineering opportunities, projects or technical conversations, choose the channel you prefer.

Franca, São Paulo, Brazil · Available for remote opportunities let's talk