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Marcos Antonio

@marcosantonio

Senior Full-Stack Software Engineer at Secretaria de Administração do Estado de Ms, building Bayta, a digital-solutions platform with 19 integrated modules.

Brazil

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What I'm looking for

I'm seeking international opportunities in Software Engineering, Full-Stack Development, Backend Development, and Software Architecture.

At Secretaria de Administração do Estado de Ms, I designed and deployed Bayta, a platform for developing digital solutions for processes that previously had no system. It’s now in use with 19 integrated modules, supporting process governance, monitoring, and productivity.

I also developed a data processing platform that turns unstructured data into standardized, analytics-ready databases. By integrating 15 data sources through REST APIs and automated ETL workflows, I enabled KPI generation and data-driven decision-making.

In my current role, I lead a five-member engineering team delivering three strategic applications, and I’ve developed and deployed more than 56 interactive BI dashboards using Power BI, Qlik Sense, and Looker Studio.

Previously, at DLL Softwares, I engineered the frontend architecture for a SaaS eCommerce platform and led the final development and quality review of a POS web application integrated with a legacy sales system. At Ganso Sistemas, I built websites and a travel operations platform, including a project that increased paid advertising conversion rates by 250%.

Experience

Work history, roles, and key accomplishments

Current

Senior Full-Stack Software Engineer

Current

Secretaria de Administração do Estado de Ms

Feb 2023 - Present (3 years 8 months)

Designed and deployed the Bayta System, a platform for developing digital solutions for previously non-systemized processes using Node.js, EJS, Docker, Kubernetes, HTML, JavaScript, and CSS.

Built a system currently in use with 19 integrated modules, improving process governance, monitoring, and productivity.

Designed and developed a data processing platform using Node.js, Python, and REST APIs

Frontend Software Engineer

DLL Softwares

May 2021 - Feb 2023 (1 year 9 months)

Redesigned and optimized the company’s institutional website using HTML, CSS, JavaScript, and PHP, achieving high Lighthouse performance scores and enhanced SEO rankings. Improved mobile responsiveness and user experience, increasing brand visibility in search results and facilitating customer engagement with products and services.

Engineered the frontend architecture of a SaaS eCommerce platform

Full-Stack Engineer

Ganso Sistemas

Sep 2019 - Nov 2021 (2 years 2 months)

Designed and delivered high-converting websites and landing pages using HTML, CSS, JavaScript, PHP, and custom WordPress themes, with Salesforce-integrated lead capture workflows. Improved search visibility, site performance, and user experience, driving a 250% increase in paid advertising conversion rates.

Built a responsive travel operations platform using HTML, CSS, JavaScript, and PHP, hosted