Roseler Tañedo Jr.

Security Full-Stack Product Engineer

Lipa City, Batangas, Philippines
Roseler Tañedo Jr.

About

Security Full-Stack Product Engineer at FusionNode, building and maintaining secure applications across frontend and backend systems. Integrates security throughout the software development lifecycle through secure coding, code reviews, vulnerability assessment and remediation, and security testing. Works with product and engineering teams on authentication, authorization, data protection, and security architecture, while supporting incident response and maintaining technical documentation. Experienced with TypeScript, React, Express.js, Firebase, PostgreSQL, Elasticsearch, and Netskope.

Experience

  • - Present

    Security Full-Stack Product Engineer @ FusionNode

    Full-time
    Malvar, Calabarzon, Philippines - Hybrid

    Summary:

    • Design, develop, and maintain secure full-stack applications across front-end and back-end components, incorporating security throughout the software development lifecycle.

    Responsibilities:

    • Implement secure coding practices, conduct code reviews, and perform vulnerability assessments to identify and address potential security risks.
    • Identify, assess, prioritize, and remediate security vulnerabilities across application features, services, and supporting infrastructure.
    • Collaborate closely with product and engineering teams to integrate security requirements into product design, architecture, and functionality.
    • Implement and maintain authentication, authorization, data protection, and other application security controls.
    • Conduct security testing throughout the development lifecycle to validate application security and reduce potential vulnerabilities before deployment.
    • Monitor emerging security threats, vulnerabilities, and industry standards, applying relevant security practices and controls to product development.
    • Support incident response, investigation, and remediation activities related to application and product security issues.
    • Develop and maintain security architecture documentation, technical specifications, processes, and security guidelines for internal use.
    • TypeScript
    • Full-Stack Development
  • - Present

    Cybersecurity Specialist @ FusionNode

    Full-time
    Lipa, Calabarzon, Philippines - On site

    Summary:

    • Currently employed at FusionNode, a cybersecurity company providing advanced security solutions. Contribute across multiple roles including cybersecurity operations, IT support, and full-stack development while strengthening technical proficiency in both offensive and defensive security practices.

    Responsibilities:

    • Assist in security monitoring and real-time analysis of potential threats
    • Perform vulnerability assessments and apply penetration testing methodologies
    • Contribute to backend and frontend development to enhance operational platforms and security automation
    • Provide technical support including system maintenance, configuration, and troubleshooting for users and infrastructure
    • Netskope
    • Azure
    • Cybersecurity
    • Networking
    • Threat Detection
    • ISO Standards
    • GRC
    • Penetration Testing
    • Threat Landscape Analysis
    • Azure
    • Elasticsearch
    • Express.js
    • React
  • -

    Cybersecurity Intern @ Redynox

    India - Remote

    Summary:

    • Completed a focused internship involving practical network and web application security assessments, gaining hands-on experience in threat analysis, vulnerability scanning, and secure configuration.

    Responsibilities:

    • Implemented security controls to protect small network environments from common threats
    • Monitored network activity and analyzed suspicious traffic patterns
    • Performed vulnerability scans on a deliberately insecure web application
    • Manually tested for SQL Injection, XSS, and CSRF vulnerabilities
    • Suggested remediation strategies for identified vulnerabilities
    • Promoted cybersecurity best practices via social media engagement
    • Network Security
    • Firewall Configuration
    • Wi-Fi Encryption
    • Wireshark
    • OWASP Juice Shop
    • OWASP ZAP
    • SQL Injection Testing
    • Web Vulnerability Scanning
    • Cybersecurity Awareness
    • Incident Analysis
  • -

    Bootcamp Trainee @ FusionNode Bootcamp

    Philippines - On site

    Summary:

    • Completed an intensive 6-week training program in cybersecurity fundamentals, enterprise security, and practical defense techniques, gaining hands-on experience in both offensive and defensive security operations.

    Responsibilities:

    • Participated in simulated security operations to detect and mitigate threats
    • Applied penetration testing techniques to assess vulnerabilities
    • Engaged in blue team exercises to enhance incident response and defense capabilities
    • Gained familiarity with industry-standard tools and compliance frameworks
    • Cybersecurity
    • Networking
    • Threat Detection
    • ISO Standards
    • GRC
    • Cryptography
    • Penetration Testing
    • Blue Teaming
    • Threat Landscape Analysis
    • Azure
  • -

    Main Backend Developer @ AdviSync – Academic Advising Platform

    Philippines - Remote/Academic Project

    Summary:

    • Led backend development for AdviSync, a platform designed to enhance adviser–advisee interactions by providing analytics, status tracking, and streamlined class management. Oversaw database architecture and implemented core system features to ensure reliability and scalability.

    Responsibilities:

    • Served as the primary backend developer, coordinating with front-end team members to integrate system features.
    • Designed and managed Firebase Realtime Database structure for optimal performance and scalability.
    • Implemented role-based access control to secure sensitive platform operations.
    • Collaborated in code reviews, testing, and debugging to ensure system stability.
    • Backend Development
    • Firebase Realtime Database
    • Role-Based Access Control
    • Data Synchronization
    • System Architecture Design
    • Collaboration
  • -

    Software Engineer Intern @ Department of Information and Communications Technology

    Batangas City, Philippines - On site

    Summary:

    • Contributed to backend development tasks within a 3-week Agile sprint, including requirements gathering, secure authentication implementation, and developer documentation. Gained additional expertise in cybersecurity and SEO-related vulnerabilities through specialized training.

    Responsibilities:

    • Participated in a 3-week Agile sprint, collaborating with team members to deliver backend features on schedule.
    • Gathered and analyzed technical requirements for assigned development tasks.
    • Implemented and tested role-based authentication for secure application workflows.
    • Assisted in debugging, testing, and optimizing backend code for performance.
    • Attended a cybersecurity course covering legacy hacking techniques, SEO exploits, and data protection best practices.
    • Backend Development
    • Agile Development
    • Role-Based Authentication
    • Cybersecurity
    • Developer Documentation
  • -

    Unit Secretary @ Sunlife Canada

    Batangas, Philippines - On site

    Summary:

    • Assisting in the development and maintenance of software applications using Python and Django. Collaborating with cross-functional teams to ensure quality and timely delivery of software solutions.

    Responsibilities:

    • Handled client queries, requests, and documentation requirements with accuracy and professionalism.
    • Coordinated with multiple Financial Advisors to ensure timely submission and processing of client paperwork.
    • Maintained organized records and filing systems for both digital and physical documents.
    • Liaised between clients, advisors, and internal departments to facilitate smooth communication.

    Achievements:

    • Successfully implemented a tracking system for client requests, improving response times and reducing missed follow-ups.
    • Recognized for maintaining exceptional accuracy in handling sensitive financial documents.
    • Client Relations
    • Administrative Support
    • Document Management
    • Communication
    • Time Management
    • MS Office Suite

Projects

Skills

  • GitHub GitHub
  • Gitlab
  • HTML
  • CSS
  • JavaScript
  • Tailwind
  • Python Python
  • Node
  • MySQL
  • Git
  • Next.js
  • React
  • TypeScript

Education

Certificates