Senior Network Security Engineer, Fintech

Optasia is a fully enabled B2B2X financial technology platform covering scoring, financial decisioning, disbursement and collection. We are committed to enabling financial inclusion for all. We are changing the world our way.

Since company’s inception, over a decade ago, we have grown to become a global leader in the Fintech fields, constantly expanding and adding new solutions, offerings, and untapped monetization opportunities for all our partners and clients.

As a member of the Network Security Engineering team in Optasia, your primary objective is to ensure the stability, security, performance, and continuous improvement of the organization’s enterprise network and security infrastructure by designing, implementing, maintaining, and supporting core networking and security services across production and corporate environments.

What you will do

• Participate in the design, implementation, and continuous improvement of enterprise network and security solutions.
• Deploy, configure, and maintain enterprise network infrastructure, including switches, routers, wireless networks, and next-generation firewalls.
• Administer and support security technologies such as firewalls, VPNs, network access control, and network segmentation.
• Monitor network and security infrastructure to ensure high availability, performance, and resilience.
• Perform network hardening, vulnerability remediation, and security improvement activities.
• Investigate and troubleshoot complex network and security incidents, including root cause analysis where required.
• Support Layer 2 and Layer 3 network services, including VLANs, STP, LACP, routing, DNS, DHCP, and TCP/IP services.
• Manage and support VPN technologies, including IPsec VPN and SSL VPN solutions.
• Collaborate with internal technical teams, project managers, and external vendors to deliver infrastructure and security projects.
• Participate in infrastructure upgrades, migrations, disaster recovery planning, and operational improvement initiatives.
• Ensure network and security solutions comply with organizational policies and industry best practices.
• Provide technical support and guidance to other IT teams when required.
• Maintain accurate technical documentation, network diagrams, configuration standards, changes, and operational procedures.

What you will bring

• 5+ years of hands-on experience as a Network Engineer or Network Security Engineer.
• Strong understanding of enterprise networking principles and protocols, including TCP/IP, DNS, DHCP, VLANs, and IEEE 802.1X.
• Strong knowledge of Layer 2 technologies, including Spanning Tree Protocol and Link Aggregation Control Protocol.
• Good understanding of Layer 3 routing technologies and protocols.
• Strong knowledge of VPN technologies, including IPsec VPN and SSL VPN.
• Extensive experience with Cisco networking technologies, including switching, routing, and enterprise campus networks.
• Hands-on experience with enterprise firewall platforms such as Cisco ASA, Cisco Firepower, and Fortinet FortiGate.
• Familiarity with enterprise wireless networking solutions.
• Working knowledge of Windows and Linux operating systems.
• Experience with network monitoring, troubleshooting, and diagnostic tools.
• Understanding of network security best practices, including segmentation, zero-trust principles, and secure network architecture.
• Familiarity with authentication and identity services such as RADIUS, Active Directory, and LDAP.
• Experience with vulnerability assessment, hardening, and remediation processes.
• Ability to create and maintain technical documentation, network diagrams, configuration standards, and standard operating procedures.
• Excellent problem-solving, analytical, communication, and collaboration skills.
• Professional certifications such as Cisco CCNP Enterprise, CCNP Security, Fortinet NSE, FCP, or FCSS will be considered an advantage.

Why you should apply

What we offer:

💸 Competitive remuneration package
🏝 Extra day off on your birthday
💰 Performance-based bonus scheme
👩🏽⚕️ Comprehensive private healthcare insurance
📲 💻 All the tech gear you need to work smart

Optasia’s Perks:

🎌 Be a part of a multicultural working environment
🎯 Meet a very unique and promising business and industry
🌌 🌠 Gain insights for tomorrow market’s foreground
🎓 A solid career path within our working family is ready for you
📚 Continuous training and access to online training platforms
🍜 Enjoy comfortable open space restaurant with varied meal options every day
🎾 🧘♀️ Wellbeing activities access such as free on-site yoga classes, plus available squash court on our premises

In accordance with applicable pay transparency requirements, the salary range for this position will be communicated to candidates before the first step of the selection process, enabling informed discussions regarding the role.