Senior Customer Success Engineer – Network Security (NGFW) (m/f/d)

Location: Poland, Bulgaria, Romania, Czech Republic, Portugal, Greece or Cyprus Work Arrangement: Remote / Office-based, depending on location Contract Duration: Full-time, initial 12-month engagement, with potential for extension or conversion to permanent employment. Working Hours: 40 hours per week, EMEA business hours. Occasional later calls may be required to connect with global teams. Expected Start Date: ASAP We are looking for three experienced Senior Customer Success Engineers specialising in Network Security and Next-Generation Firewall (NGFW) technologies. The successful candidates will act as trusted technical advisors to enterprise customers, helping them optimise their network security environments, maximise the value of their security solutions and achieve their technical objectives. This is a senior, customer-facing technical role combining strong network security expertise, strategic consulting and customer relationship management. It is not a traditional reactive technical support position. Key Responsibilities Manage relationships with enterprise customers, acting as a trusted technical advisor. Assess customers' network security environments and technical maturity. Develop technical roadmaps and recommend improvements to security infrastructure. Advise customers on firewall technologies, security configurations and best practices. Support software upgrades, migrations and lifecycle management. Identify potential technical risks and proactively recommend solutions. Help customers maximise the value of their security products and subscriptions. Monitor customer health and identify opportunities to improve security outcomes. Collaborate with Sales, Technical Support, Product and other internal teams. Communicate complex technical concepts effectively to technical and business stakeholders. Required Skills and Experience Minimum 5 years of relevant experience in Network Security, Cybersecurity Engineering, Network Architecture, Technical Consulting or Technical Account Management. Strong hands-on experience with Next-Generation Firewalls (NGFW). Experience with enterprise firewall technologies and management platforms. Strong understanding of network infrastructure, firewall capabilities, high availability, SSL/IPSec VPN, HTTP and TCP/IP. Experience working with enterprise customers in a technical advisory or consulting capacity. Relevant senior-level network security certification or equivalent expertise. Nice to Have Experience with advanced firewall security services. Knowledge of threat prevention, URL filtering, DNS security and data loss prevention. Experience with cloud-managed network security platforms. Scripting and automation skills, particularly Python and APIs. Language Requirements Fluent English is mandatory, together with one of the following languages: German + English French + English English-only candidates cannot be considered. Required language distribution across the three positions: Either 2 German-speaking and 1 French-speaking candidate, or 2 French-speaking and 1 German-speaking candidate. Additional Information Limited business travel may be required.