Chewy: Senior Network Engineer

Our Opportunity:

As part of the infrastructure engineering team based in our Boston, MA office, the Senior Network Engineer will plan, design, implement, and support enterprise networking infrastructure across on premise and public cloud environments (AWS direct connect preferred). Key responsibilities include configuring, maintaining, optimizing, and troubleshooting new and existing network hardware, software, and communication links. Works on complex network issues; documentation, analysis and resolution of escalated tickets. The successful candidate will be a self-starter who exceeds with minimal supervision and works within teams using agile engineering principles.

What you'll do:

  • Plan, design, test, implement and continuous improvement of enterprise datacenter and hybrid cloud network solutions.
  • Maintain accurate diagrams and configurations for all network infrastructure.
  • Procure, turn-up, and troubleshoot both private and public WAN circuits.
  • Participate in the creation of a DevOps-enabled automated CI/CD solution that delivers tools and processes for rapid application development efforts and on-going production operations.
  • Possess and maintain a deep understanding of IaaS and PaaS services offered on cloud platforms and understand how to design and operate networks to support ease of use, self-service, automation, and reliability of services.
  • Collaborate across the IT organization to provide end-to-end solutions.
  • Assist with evaluation, standardization, deployment, maintenance and documentation of new solutions.
  • Provide Tier III escalation support of network service incidents to diagnose problems and resolve time-critical issues.
  • Assume technical ownership in network engineering using industry proven best practices to build secure and stable networks.
  • Interact with application and development teams to provide network troubleshooting and guidance for quick problem resolution.
  • Develop solid working knowledge of Cisco and other vendor networking technologies.
  • Configure, install, and maintain network devices
  • Provide guidance and training to junior members of the team.
  • Regular review and scheduling of firmware updates, preventative maintenance, cyclical replacements and upgrades, and security of all network devices.
  • Participate in 24/7 support and on-call rotation
  • Develop and execute infrastructure automation tasks via Ansible, Chef or other frameworks
  • Analyze network activity and network problems to discover and prevent systematic errors.

What you'll need:

  • Cisco certifications are strongly desired (CCNA/CCDP/CCNP/CCIE or equivalent work experience a must).
  • Experience building and maintaining Cisco spine-and-leaf network models is required. Experience with VXLAN MP-BGP EVPN.
  • 7 years experience with designing, implementing, upgrading and supporting Cisco networking and security infrastructure.
  • Experience with advanced datacenter technology including VSS, vPC, FCoE, VXLAN, OTV, LISP, EVPN, ECMP, etc.
  • 2-5 years of strong experience directly related to hybrid cloud computing (AWS, Azure, GCP, Private).
  • Strong experience in implementing & configuring AWS Direct Connect solutions.
  • AWS certifications are desired (AWS Certified Advanced Networking or equivalent experience).
  • Extensive understanding and experience with Cisco hardware including: Nexus, Catalyst, ISR, ASR and ASA.
  • Expertise with Cisco IOS, IOS XR, IOS XE and NXOS on multiple platforms.
  • Extensive experience building and maintaining Cisco three tier data center models (core, aggregation, access) for enterprise.
  • Extensive experience in designing, building and maintaining TCP/IP based enterprise networks is required including the following technology areas: LAN (Branch, Building, Campus), WAN (MPLS, DMVPN, iWAN), Edge (Internet, VPN).
  • Experience with EIGRP, BGP, IPSEC, iWAN, VXLAN VRF, VLAN, VTP, DLSW, QoS, NHRP, PfRv3, STP, and netflow.
  • Understanding of load balancing integration.
  • Experience with Cisco ASA, Checkpoint, or other firewalls.
  • Knowledge of supporting IP-based voice and video systems, including implementing QoS on both LAN and WAN infrastructure.
  • Familiarity with hosted collaboration services for VoIP systems and with SIP integration techniques across systems and carriers.
  • Network Design Engineering experience related to Data Centers in virtualized and cloud environments.
  • Ability to design and implement complex network systems and the ability to explain complex issues to others.
  • Knowledge of automation and scripting (Python, TCL, Perl, Ansible, Chef or others).
  • Understand and follow Cisco Validated Design solutions.
  • Ability to work well within a team; good interpersonal relational skills.
  • Experience in coordination with multiple groups, companies, and people simultaneously.
  • Effective verbal & written communication skills.
  • Adhere to Change Management policies and procedures
  • Position may require some travel


  • A bachelors degree in computer sciences or equivalent
  • Experience with Storage and storage protocols such as FCOE, FC, and NAS is highly preferred
  • Administration of F5 load balancers
  • Knowledge of network security solutions / services including IPS/IDS, FIM, DDoS and SIEM
  • Administration experience of Cisco UCS and supporting infrastructure
  • Experience with VMWare
  • Experience with network diagnostic, monitoring and analysis tools (e.g. SolarWinds network tools)
  • Certification in ITIL
  • Working knowledge of IT tools such as Confluence, JIRA, Service Now, and Remedy

Employee Testimonials

Bill Poitras
Software Engineer

It’s amazing working with such a diverse group of talented people at Chewy! I really love the culture of fun, collaboration, hard work, and innovation that I’ve seen throughout the company. I especially am impressed the lengths our company strives to wow our customers. I’ve witnessed first-hand how our customer service representatives not only encourage the passion of pet parents, but share their own. I’m grateful for the opportunity to learn so much new technology and the world of e-commerce.

Becca Litwack
Affiliate Marketing Manager

The environment at Chewy is energizing and there is a strong sense of purpose. Our focused attention to the customer leads to great enthusiasm for the work we get to do. There is real comradery on the teams as well – our team frequently lunches together which lends to a friendly work environment, collaboration, and innovation. Having dogs in the office doesn’t hurt either!

Shantesh Kanekar
Director of Software Engineering

The company known for best in class Customer Service knows how to keep its internal customers (our team members) happy, too. There is a positive energy and vibe the moment you set foot in the office. The workforce at Chewy is a vibrant mix of diversity in all aspects but one thing that is common is the shared belief of being the best in class at whatever job function one is in.

Chris Foley
Senior Software Development Manager

Working at Chewy is fast-paced, challenging, and very fulfilling. Each person here has the opportunity to have a profound effect on how we wow both our internal and external customers. We place a very high value on customer service here at Chewy and regardless of what you are working on, the customer satisfaction is always going to be #1. By everyone working towards the same common goal, teamwork organically happens in everything we do.