• Participate in the design, deployment, and configuration of systems in customer environments • Implement and configure hotel IT systems, including PMS, POS, and guest-facing technologies during project engagements • Plan, configure, and maintain network security components including firewall rules, VPNs, and segmentation • Provide post-deployment support and knowledge transfer to ensure client operational readiness • Work directly with clients to implement project-based solutions tailored to their technical and business requirements • Collaborate with project managers to ensure technical deliverables align with project milestones • Document backup and recovery procedures as part of project deliverables • Provide consultation and support through written, verbal, and face-to-face interactions, addressing the unique challenges of the customer’s environment

Role Description - Designing, redesigning, and implementation of connectivity, security, delivery and monitoring services relating to virtual networks, VPN, NAT gateways, DNS, load balancers, web application firewalls, application gateways, etc. - Extensive experience in networking within large enterprise environments, including WAN, LAN, data centers, and cloud environments. - Design, deploy, and manage cloud-based network solutions using Azure, GCP and AWS platforms. - Develop and implement strategies for seamless cloud integration, including hybrid cloud environments. - Experience with HPE Aruba network solutions, including wireless and wired networking. - Experience designing and implementing BGP routing policies to ensure optimal path selection and traffic engineering. - Continuously adapts and fine-tunes architecture, configuration standards, and protocols in partnership with Infrastructure and Security teams. - Knowledgeable in network security best practices and integration. - Developing, designing, and implementing network roadmap, architecture, standards, and governance. - Monitor network performance using advanced tools and techniques, identifying and resolving issues proactively. - Contribute in continuous process development, improvement, and automation of Perimeter Defense related solutions and support activities. - Collaborate with cross-functional teams to ensure seamless network operations. - 5+ years of designing, deploying of experience, maintaining, and improving on-prem and cloud networks. - Experience with cloud networking technologies, including VNETs, ExpressRoute, User Defined Routes, Network Security Groups, Load Balancers, Application Gateways, DNS, Route Servers, and Network Managers. - Proficiency in configuring and managing Cisco Switches, HPE Switches. - Extensive background in core networking technologies such as TCP/IP, STP, HSRP, NAT, QoS, SNMP, and SYSLOG. - Proficiency in routing technologies, specifically BGP. - Knowledge of ITIL, and change management processes. - Self-starter with high energy to meet the needs of a demanding business and IT environment. Qualifications - 5+ years of experience in designing, deploying, maintaining, and improving on-prem and cloud networks. - Experience with cloud networking technologies. - Proficiency in configuring and managing Cisco and HPE Switches. - Extensive background in core networking technologies. - Knowledge of ITIL and change management processes. Requirements - Extensive experience in networking within large enterprise environments. - Experience with HPE Aruba network solutions. - Experience designing and implementing BGP routing policies. - Knowledgeable in network security best practices. - Ability to monitor network performance and resolve issues proactively. - Strong collaboration skills with cross-functional teams. Benefits - Competitive Salary - Career Growth

Role Description Core4ce is seeking a Senior Enterprise Network Services Engineer to design, implement, and maintain secure and scalable enterprise network infrastructures. The ideal candidate will have a strong background in network engineering, security, routing, firewall management, load balancing, and automation. This role requires deep knowledge of TCP/IP networking, encryption protocols, traffic analysis, scripting, and cloud networking. Additionally, the candidate will be responsible for planning IT security projects, troubleshooting complex network issues, and ensuring compliance with security policies. - Design, configure, install, and manage enterprise network infrastructure, including routers, switches, firewalls, and load balancers. - Plan and schedule the installation or modification of network hardware and software. - Implement and maintain secure network configurations across multi-VRF Cisco routers and enterprise environments. - Troubleshoot and analyze TCP/IP network traffic, including TCP 3-way handshake, TCP window scaling, and MSS. - Capture and analyze network packets using TCPDump (Linux) and Flow Monitor Capture (Cisco ASR). - Implement multi-protocol routing solutions with BGP, OSPF, and VRF-based networks. - Use Wireshark, TCPDump, and other diagnostic tools for network performance analysis. - Perform TLS/SSL handshake troubleshooting and security configuration. - Configure and maintain firewalls (Palo Alto, Cisco), including security policies, VPNs, and intrusion prevention systems (IPS). - Implement AAA technologies (Cisco ISE, LDAP, OTP) for access management. - Ensure certificate management and encryption, including TLS/SSL and OpenSSL operations. - Install, configure, and troubleshoot digital certificates on F5 LTM/GTM/APM/ASM appliances. - Implement F5 Client Constrained Delegation (C3D) for certificate delegation. - Enable certificate-based authentication using Client-SSL profiles and APM policies. - Deploy and maintain network monitoring, alerting, and repair systems in production environments. - Troubleshoot BGP neighbor configurations, VPNv4 unicast summary, and OSPF network participation. - Optimize and troubleshoot load balancing solutions and DNS-based traffic management. *This position is designed to be flexible, with responsibilities evolving to meet business needs and enable individual growth. Qualifications - Minimum 4 years of hands-on experience as a Network Administrator or Network Security Engineer. - Secret clearance w/Tier 5 investigation. - Strong knowledge of OSI and TCP/IP network models, TCP 3-way handshake, and window scaling. - Experience with Palo Alto and Cisco firewalls. - Experience with F5 LTM, GTM, APM, ASM for load balancing and security. - Cisco Certified Network Professional (CCNP) certification or equivalent experience or willingness to get within 45 days of hire. Requirements - Strong troubleshooting skills with routing protocols (BGP, OSPF, VRF, LISP). - Familiarity with network packet capture tools (TCPDump, Wireshark). - Understanding of essential network services (DNS, SMTP, NTP, IMAP, SNMP). - Experience in TLS/SSL security, OpenSSL, and certificate management. - Experience working with Unix/Linux-based systems. - Experience with network automation (REST APIs, Syslog, XML, SNMP). - Experience deploying and troubleshooting load-balanced services and SSL certificate management. Benefits - 401(k) with 100% company match on the first 6% deferred, with immediate vesting. - Comprehensive medical, dental, and vision coverage—employee portion paid 100% by Core4ce. - Unlimited access to training and certifications, with no pre-set cap on eligible professional development. - Tuition assistance for job-related degrees and courses. - Paid parental leave, PTO that grows with tenure, and generous holiday schedules. - The Forge gives every employee the chance to propose bold innovations and help bring them to life with internal backing.

**What You Will Own:** - Design and operate reliable cross-DC and hybrid connectivity across IPsec, BGP, routing policy, firewalling, DNS, Cloudflare, provider networking, and cloud connectivity. - Build highly available network paths across data centers, public cloud providers, OpenNebula, Kubernetes/Talos, and bare-metal infrastructure. - Own network changes end to end: design, risk assessment, peer review, rollout, monitoring, validation, rollback, and post-change notes. - Replace fragile manual patterns with documented, observable, repeatable services using Git review, automation, scripts, source-of-truth data, and monitoring. - Debug and resolve production incidents involving Linux networking, BIRD/FRR, strongSwan, Juniper JunOS, firewalls, Cloudflare, DNS, MTU/MSS, asymmetric routing, NAT/conntrack, packet loss, Kubernetes CNI behavior, and provider constraints. - Maintain architecture documents, topology diagrams, HLD/LLD specs, runbooks, disaster recovery procedures, configuration snapshots, IPAM/source-of-truth data, and operational handoff material. - Work closely with IaaS, SRE/Observability, Security, Automation/Data, Platform, Service Delivery, and product teams.