Top Senior Network Engineer Jobs in NYC, NY

Lead infrastructure engineer responsible for designing, deploying, and operating large-scale network infrastructure (Arista-focused), ensuring capacity, monitoring, and remediation across applications. Partners with app and infra teams to manage capacity risks, applies automation and cloud migration knowledge, and makes key technical decisions for multi-technology projects.

Lead infrastructure engineer responsible for designing, deploying, and operating large-scale network infrastructure (Arista-focused). Ensure end-to-end monitoring, capacity planning, incident resolution, and cross-team collaboration. Drive automation, cloud migrations, and decisions across multiple infrastructure domains while mitigating capacity and technical risks.

The role involves designing, implementing, and providing operational support for large-scale networks, ensuring infrastructure stability and reliability.

Leads technical vision and engineering excellence for a cloud-native global payments network. Designs and reviews resilient, secure, scalable, low-latency systems; decomposes complex problems; supports cloud modernization and new payment capabilities; mentors engineers; shares technical knowledge; and advises teams on architecture, performance, scalability, operability, and production-quality implementation.

Own and operate low-latency network infrastructure for trading systems, including colocation connectivity, exchange feeds, L2/L3 topology, BGP and OSPF routing, PTP synchronization, firewall policies, automation, packet analysis, documentation, and incident response. The role involves designing infrastructure from scratch, managing vendors, building Python tooling, and participating in on-call support within a small network engineering team.

Design, develop, and maintain network datapath monitoring and observability infrastructure for GPU cloud services. Build real-time network telemetry and analytics pipelines across host networking, smart NICs, and overlay/underlay networks. Collaborate with DevOps, production, and data platform teams; troubleshoot Kubernetes and cloud networking issues; participate in on-call support, code reviews, architecture decisions, and continuous infrastructure improvements.

Leads global network infrastructure engineering across campus and WAN environments, with deep expertise in enterprise wireless design, deployment, troubleshooting, and performance optimization. Analyzes complex infrastructure issues, architects modernization initiatives, drives multiple programs, advises senior leaders, and ensures compliance, resiliency, security, and auditability. Promotes validated AI-assisted practices for infrastructure analysis, automation, documentation, and incident prevention.

Designs, configures, deploys, and supports multi-vendor network infrastructure for broadcast and media production. Works with Cisco, Arista, Palo Alto, F5, and cloud networking (AWS/Azure Direct Connect/ExpressRoute). Implements Palo Alto firewall policies via Panorama, participates in 24x7 on-call support, produces technical documentation and diagrams, and provides occasional travel and project/event support. Hybrid role based in NYC.

Owns and optimizes resilient, ultra-low-latency network and physical data-center infrastructure for institutional trading across cloud and on-premises environments. Designs routing, multicast, segmentation, firewall, VPN, telemetry, and automation systems. Leads production changes, incident response, failover testing, maintenance, and on-call support for 24/7 trading platforms. Mentors engineers and partners with SRE, product, and trading-system teams to improve reliability and developer velocity.

Designs, implements, supports, and optimizes complex IP/MPLS, carrier Ethernet, cellular core, and telecommunications network infrastructure. Maintains high availability, scalability, redundancy, security, and performance; manages escalations, outages, documentation, KPIs, and technical projects. Collaborates with architects, project managers, customers, and engineering teams while providing technical direction and mentoring junior engineers and technicians.

Designs, implements, supports, and optimizes high-availability IP/MPLS, carrier Ethernet, cellular, and video transmission networks. Responsibilities include capacity planning, bandwidth forecasting, outage troubleshooting, network monitoring, infrastructure documentation, escalation management, project coordination, and continuous improvement. The role provides technical direction to junior engineers and technicians, supports telecommunications engineering projects, and applies standards for availability, redundancy, scalability, efficiency, and security.

Provides enterprise technical leadership for cloud and network modernization across DoD environments. Engineers multi-cloud integrations, secure connectivity, cloud access points, routing and switching, data center technologies, F5 ADC solutions, and Zero Trust architectures. Leads migration planning, compliance with DoD security frameworks, Tier 3/4 troubleshooting, technical documentation, executive recommendations, and cross-disciplinary initiatives. The hybrid role supports DLA and requires periodic onsite work for NIPR/SIPR operations.

Design, implement, and maintain low-latency, high-performance network infrastructure for trading systems. Partner with engineering teams to automate, monitor, and troubleshoot distributed networks, optimize performance, ensure resilience and security, and evaluate emerging technologies to improve scalability and reliability.

Build and expand Cloudflare's global datacenter network: coordinate installations, manage hardware and contractors, implement consistent processes, perform Linux administration, use configuration management and scripting, and collaborate with SRE and Network Engineering to improve operations and automation.

Designs, implements, supports, and optimizes high-availability telecommunications network infrastructure, including IP/MPLS, carrier Ethernet, cellular data, and video transmission systems. Responsibilities include capacity planning, bandwidth forecasting, outage troubleshooting, monitoring, documentation, project coordination, escalation management, and network security. The role also provides technical direction to junior engineers and technicians, supports small projects, and contributes to strategic infrastructure planning and continuous improvement.

Lead end-to-end external connectivity strategy: manage carrier relationships, procure and track circuits, ensure diverse OSP fiber paths, coordinate fiber builds, plan backbone/POP placement, support peering/interconnection, and provide connectivity intelligence for datacenter site selection and capacity forecasting.

Own design, deployment, and operation of corporate and wireless networking across multi-site offices and data center-adjacent environments. Design Wi‑Fi for challenging RF environments, validate with surveys, run automation-first corporate network operations (config-as-code, zero-touch), onboard new sites, and ensure reliable remote access and campus LAN connectivity.

Design, implement, and maintain low-latency exchange network infrastructure. Configure network devices using Ansible and Python, monitor alerts, resolve incidents, perform root-cause analysis, support customer connectivity and turn-ups, validate products, engineer secure solutions, and coordinate with data center and circuit providers.

Lead the architecture and operations of network services, optimizing performance and scalability for AI workloads while ensuring security and compliance.

Design, implement, configure, and maintain Fortinet security solutions, including firewalls, VPNs, IDS/IPS, and endpoint security. Monitor systems, respond to incidents, troubleshoot client issues, document configurations and security metrics, deliver training, and ensure compliance with security best practices. The role involves onsite client work in the NYC metro area, collaboration with internal teams, and occasional evening or weekend work.

Implement, maintain, monitor, and troubleshoot network infrastructure across client environments. Configure routers, switches, firewalls, VPNs, and routing protocols; resolve Layer 2/3 connectivity issues; perform root cause analysis, maintenance, patching, and security updates. Maintain network documentation and collaborate with engineering, support, project teams, and clients. Travel to customer sites throughout the NYC metro region and transport equipment as needed.

The Network Engineer will oversee Cisco networks, ensure security, maintain hardware, mentor tech specialists, and expand Wi-Fi coverage.

Designs, implements, and maintains cloud and on‑prem network infrastructure with IaC (Terraform/CloudFormation/Ansible), supports AWS environments, builds CI/CD pipelines, authors technical documentation, troubleshoots escalations, and collaborates with Cloud Architects and product teams in a remote Agile environment.

Delivers post-sales network engineering services, including requirements assessment, solution design, equipment staging, configuration, testing, deployment, documentation, and client coordination. Manages complex data center networking environments involving routers, switches, firewalls, load balancing, DMZs, DDI, routing protocols, and modern switching architectures. Collaborates with clients, vendors, Smart Hands, project managers, and internal teams to meet service-level objectives, resolve issues, improve deployment processes, and enhance service delivery.

Designs, implements, and supports complex high-availability telecommunications network infrastructure. Leads architecture and long-term planning, optimizes performance and scalability, manages escalations, defines operational KPIs, and maintains documentation and diagrams. Serves as project engineer and subject-matter expert for major initiatives, coordinating across departments and engineering disciplines. Provides technical leadership, mentors junior engineers and technicians, and ensures reliable, secure integration of network services within demanding operational environments.