Nov 13, 2019

Senior Network Engineer SENIO01363 Rockville, MD Rockville, MD, USA

  • CNSI
  • Rockville, MD Rockville, MD, USA
Full-Time Engineering Health Care Information Technology (IT) Other

Job Description


The role of Senior Network Engineer is to manage a dynamic on-prem and cloud-based network consisting of network resources that support multi-tiered HA/Clustered routers, Firewalls, Load balancers and monitoring capabilities using various cloud services like AWS and Oracle and platforms such as Cisco, Checkpoint, Cisco ASA, Cisco routers F5, BIG-IP-LTM, BIG-IP-ASM, BIG-IP-APM, and operating systems like windows and Linux operating systems. This role involves coordinating with business partners to provide network design, support and configurations to all network and telecommunications infrastructure. Senior Network Administrator specialist to work as a member of Subject matter expertise  technical team responsible for the design, development and implementation of systems. Will be able to monitor network infrastructure performance and support software and hardware installation. This high-volume system operates out of multiple data centres and cloud environments like AWS and Oracle. Must reliably be available to its clients.



What You will Do:



  • Functions as an individual contributor and works under minimal supervision with wide latitude for independent judgment designing, implementing, and maintain the organizations’ Network systems.
  • Responsible for designing and architecting datacentre of LAN and WAN infrastructure network in cloud and on premise.
  • Leverage network automation tools such as Ansible, terraform to automate AWS networking tasks.
  • Implement core AWS services according to basic architecture and best practices.
  • In charge for all the static and dynamic routing design and improvements for protocols  such as EIGRP,BGP, iBGP, eBGP
  • Conduct meetings with Internal and External customer for implementing network design strategies for Dev, SIT, UAT, GAT and Production environments in AWS.
  • Responsible for the design, routing changes and implementation and any configuration management and maintenance of Datacentre’s in on premise at the customer site and cloud infrastructure in AWS.
  • Provide high level solution to RFP for network infrastructure.
  • Design, configure and provide support for AWS transit VPC architecture to control overall network security.
  • Design and maintain DNS architecture for private and public DNS of all MMIS projects.
  • Lead MMIS projects for all MPLS and direct internet connectivity with various service providers in AWS Direct connect and AWS hosted connectivity with service provider.
  • Responsible for the design, analysis and maintenance of the redundant architecture for all the environments and provide and configure solutions for Disaster recovery; firewall redundancy, layer 3 redundancy, layer 2 redundancy with High Level Design Drawings and technical documentations.
  • Configure and manage Big-IP F5 LTM4200 Appliances;
  • Configure and manage Blue Coat web proxy and AWS VPN tunnels;
  • Develop and maintain WAN Optimization technologies.
  • Checkpoint Vsec gateway installation, Design, Troubleshooting in Cloud as well as on premise environments.
  • IPS/IDS configuration, Troubleshooting and installation for all types of firewalls.
  • Proactively check network system for error conditions and perform preventive maintenance.
  • Must be knowledgeable in IPv4
  • Must be able to lead and provide guidance to mid-level engineers for support
  • Network technical support experience which includes working with all project and corporate customers. Must have experience with Cisco routers, firewalls and switches
  • Must have experience with Load-balancers, Wireless infrastructure and Voice communications for VoIP support.
  • Must be proficient in troubleshooting complex network designs.
  • Must be familiar with Point to Point, DIA, and MPLS Circuits. Extensive knowledge in TCP/IP and IPv4 Stack.
  • Must be familiar with OSPF, RIP, BGP and EIGRP Routing Protocols.
  • Excellent verbal and written skills.


Who you are:


  • You will have Bachelor’s Degree with up a minimum of 6+ years of relevant work experience and windows experience.
  • Expert knowledge with standard concepts, practices, and procedures within a systems administration.
  • Expert level analytical and troubleshooting skills
  • Expert level skill in Networking and System topologies
  • Expert knowledge with standard concepts, practices, and procedures within a systems administration.
  • Routers: Cisco 2600, 2800, 2951, 3800, 3900, ISR4300 (4331), CSR1000v,ASR routers
  • Load Balancers: Big IP F5 LTM 13.1,11.1 cloud version as well on premise version
  • Switches: Cisco 2960, 3560, 3850, 3750, 4500, 6500 ,6800i, Nexus 2K/5K, Nexus 7k,Nexus 6k
  • Firewalls: ASA 5500 series (5505, 5510, 5506-X, 5512-X and 5525-X), Checkpoint R75, R77 (4600, 4800).R80.10, R80.20, R80.30 version
  • Switching: VLANs, Dot1Q, VTP, STP, RSTP, VLAN Maps, HSRP, GLBP, CEF, DCEF, Port Security ,vPC
  • Monitoring Tools: Opmanager, IT360, Net flow, SevOne
  • Network management tools like NAGIOS, SevOne, Infoblox.RANCID, Solar Winds
  • AWS VPC including transitive VPC, Direct Connect, VGW,VPN,IPSEC, Security groups, Network ACL, ASM,
  • Routing: OSPF, EIGRP, BGP, RIP, PBR, Route-Filtering, Redistribution, Summarization, Static routing and multicast routing
  • AAA Architecture: RADIUS, TACACS
  • LAN/WAN Technologies: Ethernet, Frame Relay, MPLS VPN, HDLC, PPP, T1, T3, OC Standard
  • Protocols: IP, TCP, UDP, ICMP, NAT, DNS, DHCP, SNMP, IPsec ,SSL, HTTP, SSH, SIP, RTP, QoS AAA Architecture: RADIUS



About us:

We are proud to be a partner to the public sector, a trail blazer in health IT and a passionate advocate for better health, better care and lower costs for millions of Americans.  Innovation is core to our DNA and through our iCare program we invest in the well-being of our employees and the communities in which we live and work. You will be offered a solid compensation package which includes:

  • Annual and Other Paid Leave
  • Medical/Dental Insurance
  • Flexible Spending Account (FSA) Plan
  • Disability Insurance (Short & Long Term)
  • Life Insurance
  • 401(k) Retirement Savings Plan
  • Employee Assistance Program
  • College Savings Plan
  • Tuition & Training Assistance
  • Paid Holidays
  • Employee Referral Program


Please click on link below to be directed to our Application Tracking System  for all of our job postings:  

CNSI maintains a policy supporting equal employment opportunity. Employment decisions at CNSI are made without regard for race, color, religion, sex, national origin, age, disability, sexual orientation, gender identity, marital status, genetic status, family responsibilities, protected veteran status or any other status protected by applicable Federal, state, or local law. We are proud of our diversity and encourage all qualified applicants to apply.  


Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities

The contractor will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor’s legal duty to furnish information. 41 CFR 60-1.35(c)



Security Clearance

NO Security Clearance

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