Network Security Engineer

Join Keystone Solutions as a Senior Network Security Engineer consultant to deliver critical network protection and security engineering for our client. In this consultancy mission, you will operate on-site and/or in hybrid setups with the client, performing all responsibilities below as a Keystone Solutions consultant while collaborating closely with client stakeholders., * Design and implement network security measures:

• Develop and deploy security strategies to protect networks against cyberattacks and unauthorized access.
• Configure and maintain firewalls, VPNs, and other security devices.

• Monitor and manage network performance:

• Continuously monitor networks to detect and respond to security incidents.
• Perform regular security audits and vulnerability assessments.

• Troubleshooting and technical support:

• Diagnose and resolve network security issues.
• Provide advanced technical support and collaborate with other teams to resolve incidents., * You will work as a Keystone Solutions consultant embedded within the client environment, on-site and/or hybrid, delivering value while aligning with Keystone s quality standards and governance.

• You will collaborate closely with client stakeholders while benefiting from Keystone s community of experts, tools, and support.

Dynamic Projects:

• Opportunity to tackle diverse challenges across client initiatives, from network hardening and incident response to cloud access security and advanced automation.
• Exposure to varied architectures and technologies, accelerating your expertise in real-world contexts.

Turbo-Charged Learning and Development:

• Access to Keystone Solutions knowledge-sharing sessions, mentorship, and guidance for certifications.
• Hands-on learning through mission-driven engagements that broaden technical and consulting capabilities.

Ambition Skyrocketing within a Consultancy Framework:

• Structured pathways to grow your responsibilities across engagements, from ownership of security domains to leading cross-functional initiatives.
• Merit-based recognition for impact delivered across client projects.

Keystone Solutions Values in Action:

• As a K-Stone, you bring excellence, integrity, collaboration, and curiosity to every client mission.
• Our values shape how we deliver: pragmatic solutions, transparent communication, and a relentless focus on outcomes.

Role and Skills Snapshot: *

• Active Directory
• Algosec
• Ansible
• ExpressRoute
• Firewall
• IP Routing
• Load Balancing
• MPLS
• Netskope
• Problem Management
• Proxy
• Scripting
• Switching
• syslog
• VPN IPsec
• VPN SSL
• WAF
• WiFi

Your Impact as a Keystone Solutions Consultant:

• Apply your network security expertise across multiple client scenarios, leveraging Keystone s consulting framework to deliver measurable results.
• Drive continuous improvement in security posture through auditing, automation, and best-practice implementation.

Do you have experience in VPN?, * Communication: Ability to explain complex technical concepts clearly and understandably to non-technical audiences.

• Problem-solving: Aptitude to analyze and quickly resolve network security issues.
• Leadership: Ability to lead and mentor teams, sharing knowledge and coaching junior members.
• Adaptability: Flexibility to adapt to new technologies and the rapid changes in cybersecurity.
• Time management: Skilled at managing multiple tasks and projects while meeting deadlines and priorities.

Technical Competencies:

• Network Management and Routing: Understanding of core network management principles, including configuration and administration of routers and switches. Knowledge of routing protocols and concepts such as dynamic routing, static routing, and inter-domain routing. This also includes ExpressRoute, ISP connectivity, WiFi networks, DNS solutions, and TACACS.
• Network Security: Expertise in implementing and managing firewalls, VPN solutions, Proxy (forward and reverse), and Load Balancers.
• Cloud Security and Secure Access: Understanding of securing cloud environments, including protecting data in transit and at rest, and securing access. Mastery of the ZTNA concept.
• Security Incident Management: Ability to detect and respond to security incidents, analyze threats, and address vulnerabilities.
• Automation and Scripting: Skills in automating network tasks to improve operational efficiency using common scripting languages.
• Operating Systems Knowledge: Familiarity with operating systems used in network environments.
• Security Standards and Protocols: Knowledge of network security standards and cryptographic protocols to secure communications.

Certifications:

• Continuous Training and Certifications (optional but beneficial): Commitment to continuous learning and obtaining professional certifications in network management and security.

Behavioral Competencies:

• Ability to Adapt and Learn Quickly: Rapidly assimilate existing applications and processes; adapt to new environments and technologies.
• Effective Communication: Communicate clearly with technical and non-technical teams; explain complex concepts in an understandable way.
• Collaboration and Teamwork: Work collaboratively with diverse teams, including Business, development, and support teams.
• Problem-Solving: Identify and analyze technical issues; propose creative and pragmatic solutions.
• Time and Priority Management: Manage time and priorities effectively to meet project deadlines and objectives.
• Results Orientation: Focus on achieving outcomes, with strong motivation to drive projects to completion.
• Attention to Detail: Maintain strong attention to detail during requirements analysis, development, testing, and documentation.
• Stress Management and Flexibility: Manage stress effectively and remain flexible when facing changes and unexpected challenges.
• Autonomy: Work autonomously while reporting to the domain lead.
• Sensitivity to New Technologies: Be curious and open to new technologies and industry evolution.

Language Requirements:

• French or Dutch: excellent
• Second language (French or Dutch): good
• English: good