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Valney Marinho

@valneymarinho

Tech Lead Software Engineer at SiDi, guiding an embedded Android team building low-overhead malware detection for Samsung.

Brazil

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At SiDi, I lead a specialized embedded Android team focused on cybersecurity and the technical direction of advanced malware detection systems. I work with Samsung to align project expectations, roadmaps, and architectural decisions.

Previously at SiDi, I developed security features for Samsung Knox on One UI 8.5, including native malware detection mechanisms. I also worked on Android Kernel drivers, Google’s Android Virtualization Framework, and functionality at the hypervisor layer.

At Seall Intelligence Platform, I architected and developed an ESG management platform that replaced spreadsheet-based workflows with interactive dashboards. Earlier, at Instituto de Pesquisas Eldorado, I developed a sample tracking system and maintained tests and secure production deployments.

Experience

Work history, roles, and key accomplishments

Current

Tech Lead Software Engineer

Current

SiDi

Apr 2025 - Present (1 year 6 months)

• Leading a specialized embedded Android team focused on Cybersecurity, driving the technical direction for advanced malware detection systems.
• Architecting low-overhead security solutions, ensuring real-time threat detection with negligible impact on device performance and battery life (power efficiency).
• Acting as the primary technical liaison with Samsung, aligning project expectations, roa

Software Engineer

SiDi

Oct 2022 - Apr 2025 (2 years 6 months)

Embedded Security & Android Kernel (Samsung Global):
• Developed critical security features for Samsung Knox on One UI 8.5, specifically focusing on native malware detection mechanisms.
• Engineered drivers at the Android Kernel layer and implemented use cases for Google's Android Virtualization Framework (AVF).
• Conducted low-level functionality development ensuring system integrity and security

Software Engineer

Seall Intelligence Platform

Jun 2021 - Oct 2023 (2 years 4 months)

• Architected and developed a full-stack ESG management platform, transforming manual spreadsheet-based workflows into a centralized digital solution with interactive dashboards for data visualization.
• Designed scalable database schemas and defined RESTful API contracts, ensuring data integrity and efficient communication between the monolithic backend and frontend.
• Implemented a secure Role-B

Software Engineer

Instituto de Pesquisas Eldorado

Sep 2020 - Oct 2022 (2 years 1 month)

Managed the end-to-end lifecycle of a strategic sample tracking system designed to bridge the gap between device manufacturing operations and Quality Engineering teams.

• Process Modernization: Replaced a legacy, manual spreadsheet-based sample request process with a scalable and automated system solution.
• Cost Reduction & Traceability: Delivered a robust tracking architecture that eliminated b

Software Engineer

Grupo ICTS

May 2019 - Dec 2019 (7 months)

• I worked as full stack developer in projects to industries 4.0 of the Industrial District of Amazonas.
• Develop web and mobile systems using React.js, React Native, Node.js, and GCP (Google Cloud Platform).
• Develop IoT system using Raspberry, ESP8266 and STM32.