Network Security Engineer

Job Description Location: NYC (Hybrid – at least 3 days onsite/week) Visa Sponsorship: Aperture Cloud does not sponsor U.S. work permits or employment visas. We are seeking a talented Network Security Engineer to join our team and support enterprise network infrastructure and security operations. The ideal candidate will have hands-on experience with Cisco environments and firewall platforms, and be comfortable owning both day-to-day network operations and security configuration work. Role and responsibilities Configure and maintain firewalls, switches, and routers across the enterprise environment (Checkpoint, Fortinet, F5) Manage Cisco platforms including ASRs, Nexus, and Catalyst, and support routing protocols such as OSPF, EIGRP, and BGP Troubleshoot Layer 2 issues, dot1x/EAP, and NAC-related problems, with strong command of TCP/IP and tools like Wireshark and tcpdump Handle data center inventory, patch panel work, and hardware lifecycle management for network equipment Coordinate with network vendors and update firewall configurations in line with company security standards Support Infoblox DNS management and McAfee Web Gateway operations, with availability for off-hours support as needed Qualifications 4+ years of enterprise network and security experience Hands-on experience with Checkpoint, Fortinet, and F5 platforms Strong working knowledge of Cisco ASR, Nexus, and Catalyst Solid understanding of routing protocols and network troubleshooting at layers 2 and 3 Experience with NAC, dot1x, DNS management, and web gateway tools Company’s Benefits At Aperture Cloud, we invest in our employees' well-being and empower them with benefits, including: 💵 Competitive salary between USD $90,000 - US$120,000 💸401(k) retirement plan with company matching 🌴15 days of paid vacation per year at hire and up to 27 according to seniority (annual untaken vacation days are cashed out) 📴8 paid holidays + 5 sick days + 2 personal days per year ❤️‍🩹Company health, dental, and vision insurance plans + FSA 🦺Voluntary STD and LTD 🚍 Commuter/transit benefits All your information will be kept confidential according to EEO guidelines. Company Description Aperture Cloud is an international group that supports its clients in their end-to-end Data & AI transformation by combining management consulting with technological expertise. With over 6,000 employees across five continents, we accelerate our clients' transformations through long-term partnerships, creating measurable and sustainable impact. Our value proposition is built on a structured innovation ecosystem: 2,500 Data & AI experts, proprietary solutions built on advanced models, and an applied research, experimental development, and innovation laboratory. In Americas, our multidisciplinary teams bring over 30 years of experience helping business leaders across key industries achieve measurable performance and strong ROI, designing, building, and scaling solutions that enable companies to grow more efficiently.