SvitlaSystems Inc. is looking foraSenior Network Security Engineer for a full-time position (40 hoursper week) in Mexico. Our client is a global biopharmaceutical company. You’ll support and execute firewall security rule optimization initiatives across the global manufacturing network infrastructure. This role is implementation-focused and requires direct, hands‑on ownership offirewall rule restructuring, segmentation improvements, and production‑level configuration changes. You will not be limited to reviewing logs or escalating changes to other teams. This position requires direct execution in complex enterprise environments. The selected candidate will collaborate with Architecture, Solution Design, and Network Project Teams across multiple geographies to analyze, redesign, implement, and validate optimized firewall security policies aligned with industry best practices and corporate security standards. Requirements: 5+ years of hands‑on experience implementing and configuring Cisco security products in production environments. Proven experience designing, restructuring, and deploying firewall rule sets in complex enterprise networks. Direct hands‑on experience with: Cisco FTD and FMC; Zone‑Based Firewalls; Strong understanding of firewall policy cleanup and rule optimization projects. Experience working in segregated or highly regulated environments (manufacturing preferred). Understanding the use of security rule analysis tools such as Tufin. Responsibilities: Support the end‑to‑end optimization of firewall rule sets across manufacturing and production environments. Perform hands‑on configuration and deployment of firewall policy changes in production (Cisco FTD/FMC, Palo Alto, Zscaler, etc.). Identify redundant, shadowed, or overly permissive rules and implement remediation strategies. Drive rule cleanup, consolidation, and segmentation improvements. Execute firewall policy restructuring initiatives to align with zero‑trust and least‑privilege principles. Analyze and redesign segregated network architectures in manufacturing environments. Implement security improvements to enhance isolation between zones. Validate compliance with industry standards and internal security frameworks. Utilize tools such as Tufin (or equivalent) for rule analysis and optimization. Leverage Cisco StealthWatch, NetFlow, and other traffic analysis tools to validate policy decisions. Produce high‑quality documentation of designs, changes, and validation results. Work directly with global stakeholders across Architecture, Operations, and Security teams. Influence service providers and internal teams to ensure alignment with optimization strategy. Participate in solution testing and validation before and after production deployment. We offer: Work with #1 winner of the ‘Best Place to Work’ award! US and EU projects based on advanced technologies. Legal IMSS contract and competitive compensation. Regular performance appraisals to support your growth. Flexibility in workspace, either remote or in our welcoming office. Remote work financial support. Comprehensive medical insurance including family. Life insurance, maternity policy, family days off. Christmas Bonus in the amount of 30 days' payment. Bonuses for recommendations of new employees. Bonuses for article writing, public talks, other activities. Personalized learning program tailored to your interests and skill development. Free tech webinars and meetups organized by Svitla. Monthly Pantry Vouchers, free office snacks, and drinks. Fun corporate online\offline celebrations and activities. Awesome team, friendly and supportive community! Svitla is proud to be an equal opportunity employer. Allqualified applicants will receive consideration for cooperation without regard to age, gender identity, sexual orientation, religion, race, color, national origin, disability, or any other characteristic protected by applicable law. #J-18808-Ljbffr