Open to opportunities

ruhan de oliveira baiense

@ruhandeoliveirabaien

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Experienced software engineer and technical leader focused on scalable backend systems.

Brazil

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What I'm looking for

I seek roles where I can lead technical teams, design scalable backend systems, integrate AI solutions, and foster collaborative, growth-focused cultures.

I am an experienced software engineer and architect with over 12 years building scalable, high-availability systems and bridging business and technical teams.

I specialize in backend development, microservices architecture, and AI integration, having designed systems using PHP (Laravel), Node.js, MySQL, Redis, Kafka, Docker and AWS.

I have led and mentored multidisciplinary teams, managed projects, and promoted healthy work environments while ensuring observability, testing, and CI/CD practices.

I am passionate about delivering valuable software through Agile methodologies, fostering collaboration, and continuously improving system reliability and developer experience.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

Mio

Jan 2023 - Present (2 years 11 months)

Designed and implemented scalable services using PHP (Laravel), Node.js and AWS, built SDKs and automated tests to ensure high availability and maintainability across production systems.

PHP (Laravel)Node MySQL Redis AWS CI CD Automated Testing Microservices

Senior Software Engineer

SOCi, Inc.

Jul 2022 - Dec 2022 (5 months)

Developed and scaled a digital marketing management platform handling thousands of concurrent events daily using microservices and containerization; integrated LLM-driven features to enhance content workflows.

PHP Microservices Containerization Scalability Testing Jira

Software Engineering Manager

Memed

Feb 2022 - Jul 2022 (5 months)

Led the Healthcare Decision Support Team, improving architecture reliability and observability while mentoring engineers and aligning product and technical priorities to deliver high-quality outcomes.

Technical Leadership Architecture Observability Mentoring Agile Project Management

Senior Software Engineer

Mercado Livre

Dec 2020 - Feb 2022 (1 year 2 months)

Built high-availability, distributed microservices for the Mercado Pago MGM ecosystem to handle large data loads and ensure system scalability through event-driven architecture and monitoring.

Microservices Event Driven Architecture Scalability Monitoring Code Review Distributed Systems PHP

Technical Lead

PicPay

Jun 2020 - Dec 2020 (6 months)

Served as technical lead for BACEN compliance, guiding a multidisciplinary team of 10+ on backlog prioritization, mentoring, and delivering scalable solutions using PHP, Node.js and Kafka.

Technical Leadership PHP (Laravel)Node MySQL MongoDB Redis Kafka Team Management

Software Engineer

PicPay

May 2019 - May 2020 (1 year)

Developed microservices for regulatory compliance, performing code reviews and maintenance to deliver scalable, self-sustaining systems using PHP and Node.js.

Microservices PHP (Laravel)Node MySQL MongoDB Redis Kafka Code Review

Software Engineer & Projects Coordinator

Arco Websites & e-Commerce

Jan 2014 - Apr 2019 (5 years 3 months)

Coordinated a 10+ member team for e-commerce projects, designed architectures and managed third-party integrations while mentoring staff and aligning product and technical goals.

Team Coordination PHP JavaScript Vue.Js MySQL Architecture

Software Developer

Dataci

Jan 2013 - Aug 2013 (7 months)

Developed Java web applications for internal services, performed requirements analysis and implemented automated tests while managing versioning with SVN.

Java JSF JPA MySQL Automated Testing SVN Requirements Management Internal Tools

Scientific Initiation Scholar

Ifes - Instituto Federal do Espírito Santo

Jul 2008 - Jul 2009 (1 year)

Developed 'Defensor Data Objects', a Java persistence framework, and presented project findings through seminars to academic audiences.

Java Research

Education

Degrees, certifications, and relevant coursework

Multivix

Bachelor in Information Systems, Information Systems

2011 - 2014

Completed a Bachelor in Information Systems with coursework in software development, systems architecture, and databases.

Ifes - Instituto Federal do Espírito Santo

Technical Degree in Information Technology, Information Technology

2007 - 2009

Activities and societies: Scientific Initiation Scholarship (2008–2009): developed 'Defensor Data Objects' persistence framework and presented seminar findings.

Earned a Technical Degree in Information Technology and completed a scientific initiation project on persistence frameworks in Java.