Network Security Engineer - F/M/X

Mantu; Województwo mazowieckie; On-site; PLN 110,000 - 190,000; Full time

Job summary

Amaris Consulting is seeking a Network Engineer to design, implement, and optimize enterprise network infrastructures across data centers, offices, wireless networks, and cloud platforms. You will collaborate with cloud, security, and infrastructure teams to ensure resiliency, performance, and scalable production environments.

Responsibilities include configuring routing protocols (OSPF, BGP, EIGRP) for IPv4/IPv6, managing load balancers, and supporting Cisco security technologies.

Qualifications

• Experience in enterprise network security engineering.
• Familiarity with Citrix NetScaler/ADC and load-balancing tech.
• Knowledge of Cisco FMC, FTD, ASA, ISE, TACACS+, AAA.
• Experience with AWS networking and cloud migrations.

Responsibilities

• Design, implement, and optimize enterprise network infrastructure across data centers, offices, wireless networks, and cloud environments.
• Strengthen network resiliency by identifying recurring failures and implementing improvements.
• Collaborate with cloud, security, and infrastructure teams to support production environments.
• Configure and maintain routing protocols: OSPF, BGP, EIGRP, IPv4/IPv6.
• Manage and troubleshoot load balancing solutions, including Citrix NetScaler/ADC.
• Support Cisco security technologies: FMC, FTD, ASA, Cisco ISE, TACACS+, AAA.
• Analyze network incidents using Wireshark and ensure timely resolution.
• Contribute to cloud networking activities, AWS: VPC, TGW, Load Balancer, Direct Connect, IAM, NACL, Security Groups.

Skills

Network security

Load balancing

Cloud networking

Troubleshooting

Cross-functional collaboration

Education

Bachelor's in CS/Engineering

Tools

Citrix NetScaler

Cisco FMC

AWS networking

Wireshark

Terraform

SDN

Job description

Join Amaris Consulting as a Network Engineer within our Information System & Digital scope. You will contribute to the design, implementation, optimization, and reliability of global enterprise network infrastructures across data centers, offices, wireless environments, and cloud platforms. Working closely with cloud, security, and infrastructure teams, you will help strengthen network resiliency, improve performance, and support the scalability of production environments.

Your missions

• Design, implement, and optimize enterprise network infrastructure across data centers, offices, wireless networks, and cloud environments.
• Strengthen network resiliency by identifying recurring failures, analyzing root causes, and implementing sustainable improvements.
• Collaborate with cloud, security, and infrastructure teams to support reliable and scalable production environments.
• Configure and maintain routing protocols, including OSPF, BGP, EIGRP, IPv4, and IPv6.
• Manage and troubleshoot load balancing solutions, including Citrix NetScaler/ADC and other load-balancing technologies.
• Support Cisco security technologies, including FMC, FTD, ASA, Cisco ISE, TACACS+, and other AAA solutions.
• Analyze network incidents using troubleshooting tools such as Wireshark and ensure timely resolution.
• Contribute to cloud networking activities, mainly within AWS environments, including VPC networking, TGW, Load Balancer, CDN, Direct Connect, IAM, NACL, and Security Groups.

Your profile

• Proven experience in network security engineering within enterprise environments.
• Experience with Citrix NetScaler/ADC, load-balancing technologies, Cisco FMC, FTD, ASA, Cisco ISE, TACACS+, AAA solutions, Wireshark, AWS networking, Fortinet, Palo Alto, Zscaler, Terraform, SDN, network automation tools, Nutanix, VMware networking, and enterprise wireless networking.
• Knowledge of OSPF, BGP, EIGRP, IPv4, IPv6, DMVPN, GRE, mGRE, NHRP, Zero Trust networking, SASE platforms, cloud migration, and network automation concepts.
• Academic background in computer science, network engineering, information systems, or a related technical field.
• Strong troubleshooting skills and ability to analyze complex network issues across enterprise and cloud environments.
• Ability to work independently while collaborating effectively with cross-functional technical teams.
• Structured mindset and strong communication skills to support reliable delivery in production environments.

What we offer

• An international community bringing together 110+ different nationalities.
• An environment where trust has a central place: 70% of our key leaders started their careers at the first level of responsibilities.
• A robust training system with our internal Academy and 250+ available modules.
• A vibrant workplace that frequently gathers for internal events, including afterworks and team buildings.
• At Mantu, sustainability is part of everything we do. You'll have the opportunity to turn your ideas into action and make a tangible impact. Every day, our teams bring our ESG commitments to life, from reducing our footprint to driving positive change within our communities. Through our WeCare Together program, you'll be empowered to design and lead projects that create real social or environmental impact, with the company’s full support.

Amaris Consulting is proud to be an equal-opportunity workplace. We are committed to promoting diversity within the workforce and creating an inclusive working environment. For this purpose, we welcome applications from all qualified candidates regardless of gender, sexual orientation, race, ethnicity, beliefs, age, marital status, disability, or other characteristics.