Marcio Merlone
Marcio Merlone

Senior Software Engineer

Open to offers · Member since 1 Oct 2026
Location
Araucária / Curitiba, Brazil
Desired salary
Confidential
Work preference
Remote Only / Full Time
Experience level
Senior

About

Professional summary

I am a Senior Software Engineer with more than 20 years of experience building scalable web applications, full-stack platforms, and resilient infrastructure. I combine modern frontend and backend engineering with a systems-engineering mindset focused on reliability, security, and long-term maintainability.

I build enterprise web solutions using React, TypeScript, Next.js, Node.js, GraphQL, Supabase, and REST APIs. My work includes accessible, responsive interfaces, component-driven architecture, headless CMS integrations, SaaS customization, and production-grade testing practices.

At ArcTouch, I have delivered high-visibility digital products for global brands including HP, Cirrus Aircraft, Quizlet, and Starbucks. I have led WCAG 2.1 accessibility efforts, developed React and Next.js applications, and designed migration pipelines from legacy WordPress platforms to Contentstack and Discourse.

My background also includes extensive infrastructure and DevOps leadership. I have managed virtualization, cloud and identity migrations, network security, observability, GitLab-based development workflows, and enterprise IT operations supporting large-scale organizational growth.

I value clean architecture, strong type safety, observability, code review, automation, and secure systems design. I also maintain open-source React and Material UI packages and enjoy building practical developer tooling for modern web applications.

Notice period: 1 month

Skills

51 capabilities

Tech stack & tools

Working toolkit

Experience

Career history

Senior Software Engineer ArcTouch

I engineer scalable and high-performance web applications for enterprise clients including HP, Cirrus Aircraft, Quizlet, and Starbucks. My primary stack includes React, TypeScript, Next.js, and component-driven frontend architecture.

I lead accessibility implementation aligned with WCAG 2.1, including semantic HTML, keyboard navigation, and ARIA patterns. I also develop and maintain automated unit and integration testing with Jest, Cypress, and React Testing Library, while contributing through peer reviews.

I architected custom extraction and transformation pipelines for a Cirrus Aircraft migration from WordPress to Contentstack and Discourse. I have also extended Shopify storefronts and Discourse platforms through Liquid, Ruby on Rails, Ember, and Handlebars development.

IT Staff / Network & Systems Manager A1 Tecnologia Industrial

I scaled IT operations from approximately 60 to more than 1,000 endpoints during major organizational growth across headquarters, branch offices, and distributed teams. I managed infrastructure lifecycle planning, systems operations, and enterprise technology governance.

I consolidated 15 physical servers into a high-availability VMware ESXi and vCenter environment with more than 60 virtual machines and redundant SAS storage. I also led the migration of more than 300 users to Microsoft Cloud and Exchange Online, while modernizing identity services from LDAP to Active Directory.

I improved network security through pfSense firewalls, VLAN segmentation, IPsec VPN tunnels, and centralized monitoring with Graylog and Zabbix. I deployed self-hosted GitLab to replace legacy CVS repositories and supported ISO 9001 compliance auditing.

Full-Stack Software Developer & Systems Analyst Áton Tecnologia, AmbienteBrasil, Locaweb Ltda, Dialdata Ltda

I developed full-stack web systems using PHP, Perl, MySQL, AJAX, Smarty, and custom MVC frameworks. My work included application development, portal administration, and server-side systems supporting environmental and web-hosting platforms.

I maintained user administration and webmail portals for high-volume hosting environments. I also engineered and supported resilient email and directory-service clusters using Postfix, OpenLDAP, FreeBSD, Solaris, and Linux.

Mechanical Design Drafter / Early Systems Engineering and Consulting Furukawa Industrial S.A., Breuling & Hoffelder Ltda, Visywork e-Business

I performed 2D and 3D CAD design, production-line installation work, supplier negotiations, and ISO quality auditing for industrial manufacturing environments serving organizations such as Bosch, Volvo, and Siemens. This experience established a strong foundation in physical systems, production processes, and quality discipline.

I also deployed early Linux network servers for proxying, dial-up ISDN, and file sharing, and provided Lotus/IBM enterprise software support and training. These roles marked the beginning of my systems engineering and technical consulting career.

Education

Learning history

CEFET-PR (Centro Federal de Educação Tecnológica do Paraná)

Associate Diploma, Mechanical Engineering Technology

Associate diploma in Mechanical Engineering Technology.

Universidade Federal do Paraná (UFPR)

Undergraduate Coursework, Informatics

Completed two years of undergraduate coursework in Informatics.

Pontifícia Universidade Católica do Paraná (PUCPR)

Undergraduate Coursework, Computer Science

Completed two years of undergraduate coursework in Computer Science.

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