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Comgent

Resident Engineer – SP – freelance

Comgent

. Provide day-to-day post-sales operational support for production and pre-production customer network environments .

Posted 10/15/2026contractParis • FranceMid-LevelSeniorWebsite

Tech Stack

Tools & technologies
PythonSwitchingTCP/IP

About the role

Key responsibilities & impact
  • Provide day-to-day post-sales operational support for production and pre-production customer network environments
  • Troubleshoot complex hardware, software, and network issues across large-scale IP/MPLS infrastructures
  • Open, manage, and drive Juniper JTAC cases to resolution, including root cause analysis and corrective actions
  • Support critical incidents, outages, and escalation scenarios
  • Conduct network information-gathering workshops and understand customer architecture, workflows, and future design requirements
  • Provide guidance on network design evolution, capacity growth, and technology adoption
  • Assist with major network upgrades, maintenance windows, migrations, and change events
  • Produce reports on project progress, network health, issues, and remediation activities
  • Lead technology and operations workshops covering issues, JTAC cases, root causes, mitigations, and long-term solutions
  • Train engineering, implementation, and operations teams on HPE Juniper Networks platforms
  • Assess network health and stability; develop fault-isolation and diagnostic procedures
  • Create and review customer SOPs and MOPs and contribute to best-practice policies and standards
  • Perform lab testing, design validation tests, certification, and integration of new hardware and major software releases
  • Maintain a release management database addressing stability and third-party security vulnerabilities
  • Develop Python-based automation tools and use AI tools for configuration validation, health checks, troubleshooting, and provisioning
  • Assist teams in adopting network automation tools and contribute to automation documentation and repositories
  • Track and triage PBN and SIRT items, document security gaps, identify software-bug and vulnerability risks, and pursue remediation or workarounds
  • Hold frequent meetings with the customer and SM to discuss JTAC case progression, solutions, and required actions

Requirements

What you’ll need
  • 5+ years of hands-on design, deployment, and operational experience in large-scale service provider networks
  • Experience supporting major network transformations, upgrades, or expansions
  • Strong experience with JUNOS CLI
  • Large-scale hands-on experience with MX, QFX, EX, ACX, and PTX platforms
  • Strong understanding of TCP/IP, MPLS, OSPF, IS-IS, BGP, MPLS-TE, RSVP, LDP, SR, SRv6, IPv4/IPv6, BGP routing policy and peering, L3VPN, VPLS, MVPN, Ethernet switching, 802.1Q, QoS/Class of Service, EVPN, broadband services, and BNG
  • Hands-on experience with Python scripting and Juniper PyEZ
  • Hands-on traffic steering and Traffic Engineering Software experience with Paragon/JRD
  • Ability to design automation solutions integrating with existing operational workflows
  • Excellent communication skills during high-pressure outage or escalation scenarios
  • Ability to present complex technical topics to engineering, operations, and executive audiences
  • Strong customer-facing skills with a collaborative, consultative approach
  • Ability to translate business and technical requirements into practical, scalable network solutions
  • Expert-level technical certifications: JNCIP, JNCIE, CCNP, and CCIE