Antonio Müller

• Designed and built a multi-tenant commerce and operations SaaS end to end: 500 REST endpoints (Hono, TypeScript, PostgreSQL/Drizzle) and a Next.js/React front end on Vercel.
• Integrated split payments (Pagar.me: PIX, cards, boleto), electronic invoicing (Focus NFe), shipping (Melhor Envio) and the WhatsApp Business API, debugging webhook, authentication and third-party API failures.
• Built AI

Project-based IT consulting: delivered projects and support for 15 business clients, matching infrastructure and systems to their operations.

Embedded in Atlassian's JSM Cloud support team via e-Core.
Key Achievements: Awarded "Best New Hire Performance 2024" (JSM SBM Global); Recognized as "AI Case Summarization Champion" and "Throughput Mentor."
Technical Ownership: Perform advanced triage, debugging, and root cause analysis (RCA) for complex JSM cases, ensuring timely and accurate resolution across ticket, chat, and voice channels.
O

Supporting our members and customers.
Responding to customers who report issues with their website(s), plugins or hosting services and handling/debugging issues.
Hanging out in the WordPress.org forums
Helping customers with their WordPress problems by logging into their websites, diagnosing issues, and offering solutions.
Writing clear and helpful responses to customer queries via email, chat, an

Technical product analyst (Support L2) embedded across 4 core teams — B2B, IO, Intelligent Search, and CMS / Composable Commerce — at one of Latin America's leading e-commerce platforms.

Collaborated directly with Directors and C-level stakeholders across LATAM, EMEA, the US, and Brazil to prioritize engineering sprints and align product delivery with business goals. Drove quality and evolution o

Mid-Level position, contributing with development of new features and maintaining services at Pinguim.app.br, writing documentations, planning architecture with the product owner and Senior's dev team. Technologies: WordPress, PHP, Vue.JS, Javascript Vanilla, Node.JS, GulpGraphQL, Rest API, MySQL, DynamoDB, AWS EC2, S3, Docker.

Developed websites for the Councilor
Internal system with various functions, such as calendar, CRUD, tasks, reminders (PHP + MySQL + JS),
Data Management (PHP + MySQL Dashboard)
Content and material creation for social networks (Facebook, Twitter, Instagram)
Interface and campaign design (Illustrator, Photoshop, Canvas) and
Edited videos for Youtube and Facebook (Final Cut pro X).

Development of Oracle PL SQL reports;
Briefing with employees from different sectors to identify their needs;
Development of tools and forms to facilitate the day-to-day of employees;
Intranet maintenance in ASP.NET.

Customer support,
Server and network support.
Backup Management,
Charts with data in Excel,
Proxy and Firewall Management.

Financial analysis of major health surveys;
Accountability for projects;
Internal audit;
Excel, Access, VBA.