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Job Title: Network Engineer

Company: Telecom

Contract: 12+ Months

Role- Hybrid- 4 days onsite in a week

Job Description

A telecom network is seeking an experienced Network Engineer to support lab‑based testing, configuration, and validation of network technologies that power our nationwide infrastructure. This role focuses heavily on backup connectivity solutions using Cradlepoint, integration with LTE networks, and hands on work with SD‑WAN Versa or any similar products and next‑generation firewalls like Palo Alto, Fotigate or any other devices.. You'll work within a lab environment to test, optimize, and validate network designs that enhance reliability, performance, and scalability across Comcast's edge and customer‑facing networks. This includes supporting traditional and next‑gen network hardware, enabling faster speeds, improved resiliency, and enhanced customer experience.

Responsibilities

Configure, test, and validate Cradlepoint devices for backup connectivity and LTE network integration.Perform hands‑on configuration of IP routers, switches, telephony CPE, and Cradlepoint hardware.Design, configure, and deploy LAN/WAN network connections, including hardware, software, and communication services.Support and troubleshoot SD‑WAN Versa deployments in a lab environment.Work with next‑generation firewalls for configuration, testing, and policy validation.Optimize network and system performance; identify and resolve performance bottlenecks.Support traditional analog and digital network hardware as needed.Monitor and maintain network infrastructure to meet Comcast standards for reliability and performance.Participate in lab testing cycles, documentation, and validation of new network solutions.Collaborate with engineering teams to support edge compute and network intelligence initiatives.

Required Skills & Experience

5-8 years of hands‑on experience with Cisco and Juniper routers.Strong knowledge of internetworking design, routing, and backup connectivity solutions (Cradlepoint preferred).Solid understanding of Layer 2 and Layer 3 technologies.Deep experience with routing protocols such as BGP, MPLS, OSPF.Hands‑on experience with SD‑WAN technologies, preferably Versa.Experience with next‑generation firewalls such as:Cisco ASAPalo AltoFortinet / FortiGateJuniper SRXCheck Point NG

Qualification

Experience building, replacing, and validating system hardware in a lab environment.Exposure to network automation, scripting, or risk‑management practices.Familiarity with LTE/5G connectivity and wireless backup solutions.

GCS is acting as an Employment Business in relation to this vacancy.

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Job Title: Network Engineer

Company: Telecom

Contract: 12+ Months

Role- Hybrid- 4 days onsite in a week

Job Description

A telecom network is seeking an experienced Network Engineer to support lab‑based testing, configuration, and validation of network technologies that power our nationwide infrastructure. This role focuses heavily on backup connectivity solutions using Cradlepoint, integration with LTE networks, and hands on work with SD‑WAN Versa or any similar products and next‑generation firewalls like Palo Alto, Fotigate or any other devices.. You'll work within a lab environment to test, optimize, and validate network designs that enhance reliability, performance, and scalability across Comcast's edge and customer‑facing networks. This includes supporting traditional and next‑gen network hardware, enabling faster speeds, improved resiliency, and enhanced customer experience.

Responsibilities

Configure, test, and validate Cradlepoint devices for backup connectivity and LTE network integration.Perform hands‑on configuration of IP routers, switches, telephony CPE, and Cradlepoint hardware.Design, configure, and deploy LAN/WAN network connections, including hardware, software, and communication services.Support and troubleshoot SD‑WAN Versa deployments in a lab environment.Work with next‑generation firewalls for configuration, testing, and policy validation.Optimize network and system performance; identify and resolve performance bottlenecks.Support traditional analog and digital network hardware as needed.Monitor and maintain network infrastructure to meet Comcast standards for reliability and performance.Participate in lab testing cycles, documentation, and validation of new network solutions.Collaborate with engineering teams to support edge compute and network intelligence initiatives.

Required Skills & Experience

5-8 years of hands‑on experience with Cisco and Juniper routers.Strong knowledge of internetworking design, routing, and backup connectivity solutions (Cradlepoint preferred).Solid understanding of Layer 2 and Layer 3 technologies.Deep experience with routing protocols such as BGP, MPLS, OSPF.Hands‑on experience with SD‑WAN technologies, preferably Versa.Experience with next‑generation firewalls such as:Cisco ASAPalo AltoFortinet / FortiGateJuniper SRXCheck Point NG

Qualification

Experience building, replacing, and validating system hardware in a lab environment.Exposure to network automation, scripting, or risk‑management practices.Familiarity with LTE/5G connectivity and wireless backup solutions.

GCS is acting as an Employment Business in relation to this vacancy.

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Job Title: Network Engineer

Company: Telecom

Contract: 12+ Months

Role- Hybrid- 4 days onsite in a week

Job Description

A telecom network is seeking an experienced Network Engineer to support lab‑based testing, configuration, and validation of network technologies that power our nationwide infrastructure. This role focuses heavily on backup connectivity solutions using Cradlepoint, integration with LTE networks, and hands on work with SD‑WAN Versa or any similar products and next‑generation firewalls like Palo Alto, Fotigate or any other devices.. You'll work within a lab environment to test, optimize, and validate network designs that enhance reliability, performance, and scalability across Comcast's edge and customer‑facing networks. This includes supporting traditional and next‑gen network hardware, enabling faster speeds, improved resiliency, and enhanced customer experience.

Responsibilities

Configure, test, and validate Cradlepoint devices for backup connectivity and LTE network integration.Perform hands‑on configuration of IP routers, switches, telephony CPE, and Cradlepoint hardware.Design, configure, and deploy LAN/WAN network connections, including hardware, software, and communication services.Support and troubleshoot SD‑WAN Versa deployments in a lab environment.Work with next‑generation firewalls for configuration, testing, and policy validation.Optimize network and system performance; identify and resolve performance bottlenecks.Support traditional analog and digital network hardware as needed.Monitor and maintain network infrastructure to meet Comcast standards for reliability and performance.Participate in lab testing cycles, documentation, and validation of new network solutions.Collaborate with engineering teams to support edge compute and network intelligence initiatives.

Required Skills & Experience

5-8 years of hands‑on experience with Cisco and Juniper routers.Strong knowledge of internetworking design, routing, and backup connectivity solutions (Cradlepoint preferred).Solid understanding of Layer 2 and Layer 3 technologies.Deep experience with routing protocols such as BGP, MPLS, OSPF.Hands‑on experience with SD‑WAN technologies, preferably Versa.Experience with next‑generation firewalls such as:Cisco ASAPalo AltoFortinet / FortiGateJuniper SRXCheck Point NG

Qualification

Experience building, replacing, and validating system hardware in a lab environment.Exposure to network automation, scripting, or risk‑management practices.Familiarity with LTE/5G connectivity and wireless backup solutions.

GCS is acting as an Employment Business in relation to this vacancy.

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Job Title: Network Engineer

Company: Telecom

Contract: 12+ Months

Role- Hybrid- 4 days onsite in a week

Job Description

A telecom network is seeking an experienced Network Engineer to support lab‑based testing, configuration, and validation of network technologies that power our nationwide infrastructure. This role focuses heavily on backup connectivity solutions using Cradlepoint, integration with LTE networks, and hands on work with SD‑WAN Versa or any similar products and next‑generation firewalls like Palo Alto, Fotigate or any other devices.. You'll work within a lab environment to test, optimize, and validate network designs that enhance reliability, performance, and scalability across Comcast's edge and customer‑facing networks. This includes supporting traditional and next‑gen network hardware, enabling faster speeds, improved resiliency, and enhanced customer experience.

Responsibilities

Configure, test, and validate Cradlepoint devices for backup connectivity and LTE network integration.Perform hands‑on configuration of IP routers, switches, telephony CPE, and Cradlepoint hardware.Design, configure, and deploy LAN/WAN network connections, including hardware, software, and communication services.Support and troubleshoot SD‑WAN Versa deployments in a lab environment.Work with next‑generation firewalls for configuration, testing, and policy validation.Optimize network and system performance; identify and resolve performance bottlenecks.Support traditional analog and digital network hardware as needed.Monitor and maintain network infrastructure to meet Comcast standards for reliability and performance.Participate in lab testing cycles, documentation, and validation of new network solutions.Collaborate with engineering teams to support edge compute and network intelligence initiatives.

Required Skills & Experience

5-8 years of hands‑on experience with Cisco and Juniper routers.Strong knowledge of internetworking design, routing, and backup connectivity solutions (Cradlepoint preferred).Solid understanding of Layer 2 and Layer 3 technologies.Deep experience with routing protocols such as BGP, MPLS, OSPF.Hands‑on experience with SD‑WAN technologies, preferably Versa.Experience with next‑generation firewalls such as:Cisco ASAPalo AltoFortinet / FortiGateJuniper SRXCheck Point NG

Qualification

Experience building, replacing, and validating system hardware in a lab environment.Exposure to network automation, scripting, or risk‑management practices.Familiarity with LTE/5G connectivity and wireless backup solutions.

GCS is acting as an Employment Business in relation to this vacancy.

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Job Title: Network Engineer

Company:Telecom

Job Description:

We're seeking a skilled Network Engineer to support the nationwide deployment and maintenance of virtual Cable Modem Termination Systems (vCMTS) and Remote PHY (RPHY) turn-ups. This cutting-edge, cloud-based vCMTS technology replaces traditional analog hardware, enabling faster speeds, improved network performance, ensuring reliable activation of next‑generation access network (NGAN) platforms. As part of the NGAN Operations Team, the engineer will be responsible for vCMTS platform stand‑up, including software installation, system validation, network configuration, and ongoing maintenance. By shifting core CMTS functions to edge compute infrastructure, This role demands deep expertise in production operations within a 24x7 environment.

Responsibilities

Perform software installation, system configuration, and network readiness validation for new vCMTS deployments.Execute standardized processes to activate and validate Remote PHY devices across national footprints.Perform system upgrades, RMA replacements, and automation tasks (Python, Bash, etc.)Participate in on‑call rotation to troubleshoot and restore service during outages.Diagnose and resolve issues involving Juniper, Arista, or Cisco network devices.Build, replace, and troubleshoot server hardware and system software.Develop scripts to streamline operational workflows and reduce manual effort.Work with Product and Project Management teams to integrate and operationalize new NGAN products.Partner with regional engineering teams to enhance product stability and build automation tools.

Experience & Skills

5+ years of hands‑on experience in a 24×7 production operations environment.Strong proficiency in Unix/Linux environments.Experience with scripting and automation (Python, Bash, etc.).Proven ability in network troubleshooting and configuration (CCNA/JNCIA optional but beneficial).Demonstrated skill in server hardware and software troubleshooting.Familiarity with Kubernetes, Jenkins, Ansible, Git is a plus

GCS is acting as an Employment Agency in relation to this vacancy.

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Job Title: Network Engineer

Company:Telecom

Job Description:

We're seeking a skilled Network Engineer to support the nationwide deployment and maintenance of virtual Cable Modem Termination Systems (vCMTS) and Remote PHY (RPHY) turn-ups. This cutting-edge, cloud-based vCMTS technology replaces traditional analog hardware, enabling faster speeds, improved network performance, ensuring reliable activation of next‑generation access network (NGAN) platforms. As part of the NGAN Operations Team, the engineer will be responsible for vCMTS platform stand‑up, including software installation, system validation, network configuration, and ongoing maintenance. By shifting core CMTS functions to edge compute infrastructure, This role demands deep expertise in production operations within a 24x7 environment.

Responsibilities

Perform software installation, system configuration, and network readiness validation for new vCMTS deployments.Execute standardized processes to activate and validate Remote PHY devices across national footprints.Perform system upgrades, RMA replacements, and automation tasks (Python, Bash, etc.)Participate in on‑call rotation to troubleshoot and restore service during outages.Diagnose and resolve issues involving Juniper, Arista, or Cisco network devices.Build, replace, and troubleshoot server hardware and system software.Develop scripts to streamline operational workflows and reduce manual effort.Work with Product and Project Management teams to integrate and operationalize new NGAN products.Partner with regional engineering teams to enhance product stability and build automation tools.

Experience & Skills

5+ years of hands‑on experience in a 24×7 production operations environment.Strong proficiency in Unix/Linux environments.Experience with scripting and automation (Python, Bash, etc.).Proven ability in network troubleshooting and configuration (CCNA/JNCIA optional but beneficial).Demonstrated skill in server hardware and software troubleshooting.Familiarity with Kubernetes, Jenkins, Ansible, Git is a plus

GCS is acting as an Employment Business in relation to this vacancy.

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Senior Network Security Consultant (DORA Programme) - Contract

Location: Fully Remote (Europe)

Preferred Location: Poland

Contract Duration: 12 months initial (strong likelihood of extension)

Start Date: ASAP

Overview

We are supporting a major European financial services organisation on a large-scale DORA compliance programme and are looking to onboard multiple Senior Network Security Consultants on a contract basis.

This is a high-impact engagement focused on delivering third-party infrastructure and security assessments at scale. You will join an established Cloud & Network Security function, contributing to critical regulatory compliance activities.

The Role

As a Senior Consultant, you will operate at a strategic and advisory level, focusing on assessment, architecture review, and risk evaluation rather than hands-on engineering.

Key responsibilities include:

Performing security and risk assessments of external supplier infrastructure and integrationsReviewing network architecture, firewall configurations, and technical designsIdentifying security vulnerabilities and compliance gaps aligned to DORAProducing technical risk dossiers and assessment reportsSupporting formal governance and decision-making forums on infrastructure riskProviding security architecture recommendations and remediation roadmapsContributing to firewall policy reviews and optimisation initiativesEmbedding into an existing security operations and architecture team

Candidate Requirements

Experience

5-10+ years' experience in network security, security architecture, or infrastructure security

Strong background in regulated environments (financial services highly desirable)

Experience conducting security assessments, audits, or compliance reviews

Ability to interpret high-level and low-level technical designs

Technical Skills

Strong knowledge of network security architecture and infrastructure design

Hands-on experience with leading vendors such as:

Palo AltoCheck PointCiscoFortinet

Familiarity with core security technologies, including:

Firewalls (including SASE / Prisma)IDS/IPSSIEMWAFDLP

Understanding of:

Cloud security (AWS, Azure, or GCP)Third-party risk / supplier security assessmentsSecurity frameworks and regulatory environments (DORA awareness beneficial but not essential)

Key Competencies

Strong analytical and problem-solving skillsAbility to assess complex technical risk and make clear recommendationsConfident in stakeholder engagement and influencing decisionsExcellent documentation and communication skillsAbility to work independently and as part of a distributed team

Engagement Details

Multiple contract roles available (individual and team-based options)Fully remote with preference for Poland-based consultantsLong-term programme with significant pipeline of workFlexible commercial structure with competitive ratesImmediate onboarding required

GCS is acting as an Employment Business in relation to this vacancy.

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Network Security Engineer

Contract

Location: Remote / Hybrid (Amsterdam)

Contract Length: 6-12 months
Start Date: ASAP
Rate: Competitive

About the Role

Our client, a leading gaming company, is seeking an experienced Network Security Engineer Contractor to support a large-scale merger and acquisition integration. The organisation has recently acquired a studio with a significantly different technology estate, and now requires a specialist to help consolidate, secure, and stabilise the combined network infrastructure.

This role is critical in ensuring the security, interoperability, and reliability of both legacy and acquired networks during the integration phase.

Key Responsibilities

Network Security Integration & Hardening

Assess, analyse, and map the acquired company's network and security architecture.Identify vulnerabilities, configuration drift, and conflicting standards across environments.Design and implement secure network integration strategies that align with corporate policies and gaming industry best practices.Strengthen perimeter security, segmentation, and internal traffic controls to ensure a stable post‑M&A environment.

Infrastructure Consolidation & Modernisation

Lead the integration of disparate firewalls, VPNs, proxies, and network monitoring tooling.Support migration of security controls, policies, and configurations into the parent company's environment.Advise on standardisation of network technologies and tooling across both estates.

Operational Security Support

Respond to and investigate network security incidents throughout the integration period.Optimise logging, SIEM visibility, alerting configurations, and incident response workflows.Provide expert-level troubleshooting of complex network and security issues, especially those arising from inter-environment connectivity.

Documentation & Knowledge Transfer

Produce clear, detailed documentation of new network security architectures, configurations, and procedures.Provide knowledge transfer to in‑house infrastructure and security teams.Support creation of new unified network and security standards for the combined organisation.

Technical Skills & Experience

Essential

7+ years' experience in network security engineering within complex, multi‑site environments.Strong hands-on expertise with:Next‑generation firewalls (e.g., Palo Alto, Fortinet, Check Point)VPN technologies (IPSec, SSL VPN, Zero Trust solutions)Network segmentation and micro‑segmentationLoad balancers and web application firewallsIDS/IPS platformsProven experience of M&A network integration or multi‑environment consolidation.Deep understanding of TCP/IP, routing protocols, BGP/OSPF, DNS, DHCP, and network diagnostics.Experience with SIEM, log management, and security monitoring platforms.Comfortable with both traditional on‑prem networks and cloud-connected environments (AWS, Azure, GCP).

Desirable

Experience working in a gaming, media, or high‑performance computing environment.Familiarity with DevSecOps, automation, or infrastructure‑as‑code (Terraform, Ansible).Certifications such as CISSP, CCNP Security, PCNSE, or similar.

GCS is acting as an Employment Business in relation to this vacancy.

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Network Security Engineer gezocht - Utrecht

12 maanden contract (Detachering)€65.000 - €70.000Hybride - 2 dagen p/w op kantoor28 vakantiedagen7 officiële feestdagen (Bevrijdingsdag jaarlijks van toepassing)8% vakantiegeld8,33% eindejaarsuitkeringPensioencompensatie

Wat je gaat doen:

Uitvoeren van changes op firewalls, routers, switches en infrastructuurapparatuurAfhandelen van incidenten en uitvoeren van diepgaande onderzoekenToezicht houden op installaties (remote of onsite)Opstellen van HLD's/LLD's + scherp implementatieadvies leverenOntwerpen, configureren & implementeren van routing/switching, firewalls, load balancers, proxies, telefonieBeheren van CMDB-updates, IPAM, netwerkdiagrammen en instructiesOntwikkelen van scripts + het aanjagen van netwerkautomatiseringBeheren van monitoringsystemen, compliance, capaciteit & changes

Wat jij meebrengt:

10+ jaar ervaring met Check Point & Cisco5+ jaar ervaring als Security Specialist binnen een grote enterprise-/overheidsomgevingErvaring met Check Point / Juniper / Cisco ASA, F5, Infoblox, Cisco ISEAantoonbare achtergrond in netwerkautomatisering & scriptingBekendheid met ITIL, Agile, Scrum, DevOpsSpecialistische certificeringen zoals Cisco R&S, Check Point, BIG-IP, Bluecoat? Nog beter.

Sluitingsdatum voor CV's is einde werkdag 26 februari. Solliciteer zo snel mogelijk als je aan de criteria voldoet.

GCS is acting as an Employment Business in relation to this vacancy.

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