385 Senior Network Engineer jobs in Singapore

DRW is a diversified trading firm with over 3 decades of experience bringing sophisticated technology and exceptional people together to operate in markets around the world. We value autonomy and the ability to quickly pivot to capture opportunities, so we operate using our own capital and trading at our own risk.

Headquartered in Chicago with offices throughout the U.S., Canada, Europe, and Asia, we trade a variety of asset classes including Fixed Income, ETFs, Equities, FX, Commodities and Energy across all major global markets. We have also leveraged our expertise and technology to expand into three non-traditional strategies: real estate, venture capital and cryptoassets.

We operate with respect, curiosity and open minds. The people who thrive here share our belief that it’s not just what we do that matters–it's how we do it. DRW is a place of high expectations, integrity, innovation and a willingness to challenge consensus.

We are seeking a Network Security Engineer to join the network security team to ensure that our infrastructure and networks are properly protected. The role involves designing, coordinating, and implementing security controls, auditing configurations, and designing networks in a hybrid compute environment. A successful candidate will have an attention to detail and the ability to understand the impact of their changes on the network and associated services.

1. Collaborate with cross-functional security, technology, and trading teams to design and deploy innovative solutions that enhance system integrity and trading performance.
2. Contribute to the design, implementation, and maintenance of mission-critical trading infrastructure to ensure resilient and scalable market operations.
3. Implement strategies to reduce network risks using micro-segmentation, port-based security, and other innovative methods.
4. Evaluate, diagnose, and implement network security solutions such as firewalls, network detection and response, intrusion prevention systems (IPS), and VPN concentrators to improve security and enable reliable remote access.
5. Leverage automation, AI, and other emerging technologies to enhance detection and response to security events.
6. Analyze network packet captures to investigate security incidents and identify areas for improvement.
7. Seek opportunities to automate tasks and streamline security operations for efficiency and effectiveness.

• Passion for solving complex problems that enable secure global connectivity for new business opportunities.
• Experience designing, implementing, and supporting advanced security systems that protect networks from emerging threats.
• Hands-on experience with firewalls, client VPNs, SASE, NDR, and IDS solutions.
• Proficiency in scripting and coding to automate processes and reduce repetitive work.
• Solid understanding of TCP, UDP, IP, the OSI model, and security protocols across layers 1-4 and 7.
• Willingness to work on-call, including nights and weekends if necessary.
• Continuous drive to innovate and improve security solutions.
• Effective communication skills to translate complex technical concepts into clear strategies for cross-functional teams.

For more information about DRW's processing activities and our use of job applicants' data, please view our Privacy Notice at .

We're hiring a Technical Presales Consultant / Network Security Engineer for a top-tier global cybersecurity company. In this role, you'll act as a key technical advisor during the sales process, supporting customers and internal teams with in-depth knowledge of network security solutions—including Juniper technologies. You'll lead technical discussions, run Proof-of-Concepts, and play an integral role in shaping secure, scalable network solutions.

Job Location: Singapore

POSITION DESCRIPTION

The Technical Presales Consultant is responsible for:

• Work closely with the sales and product teams

• Conduct Proof-Of-Concept (POC) and prepare technical proposals

• Conduct solution presentation and workshops

• Provide pre and post-sales support

• Propose and explore new and upcoming technologies in the market

• Perform any other duties as assigned

POSITION REQUIREMENTS

Skills and Experience:

• Diploma or degree in Information Technology, Computer Science, or a related field

• Minimum of 5 years of experience in the IT security sector, with a strong technical background in network engineering and firewall implementation/management
• Proficiency in Juniper security technologies (e.g., SRX firewalls, JunOS, Juniper Security Director ), including configuration, troubleshooting, and optimization
• Familiarity with other security technologies, including firewalls, IDS/IPS
• Solid understanding of networking protocols (TCP/IP, DNS, DHCP) and core principles of network security
• Experience with network monitoring and analysis tools
• Strong knowledge of Security Design Architecture, OSI model, TCP/IP model, and related protocols
• Relevant certifications (e.g., JNCIS-SEC , CCNP Security, CISSP, CISM) are advantageous
• Excellent problem-solving skills and keen attention to detail
• Strong communication skills and a collaborative team-oriented mindset

If this opportunity aligns with your skills and career goals, we encourage you to apply.

EA License: 21C0783

EAP Registration No: R

VN13902Network Security EngineerSG-Singapore About Westcon-Comstor Westcon-Comstor (WestconGroup Inc.) is a global technology distributor with worldwide capabilities in Cloud, Global Deployment and Services, and category-leading Security, Unified Communications and Collaboration, Networking and Data Center technology Practices. Combining expert technical and market knowledge with a uniquely collaborative engagement model, the company is transforming technology distribution through its digital and physical products and services delivery.

The company works with its partners to deliver results together through an investment in enablement programs and its associates' dedication to creating an exceptional partner experience. Westcon and Comstor are the company's go-to-market brands, offering customers a strong portfolio of market-leading and emerging vendors. With teams in 110 offices in 70-plus countries across six continents, Westcon-Comstor provides services to more than 170 countries.

• Manage and support IT infrastructure (e.g., servers, VMs, routers, switches, firewalls, WAPs, ISPs, etc) across clinical and on-premise environments, ensuring seamless operations.
• Manage data backup processes and system operations, including user provisioning and access controls.
• Implement and maintain network security, ensuring compliance with industry best practices.
• Troubleshoot and resolve IT and medical device connectivity issues (experience with CMS, PACS, MRI, CT Scan, X-ray etc., is a plus).
• Install, upgrade, and configure hardware and software on laptops and other devices, where required.
• Collaborate with cross-functional teams to support the setup of day surgery and health screening centers.
• Monitor system performance, respond to incidents, and optimise IT operations.
• Work closely with the security teams to ensure compliance with cybersecurity policies.
• Assist in IT audits and regulatory compliance efforts for medical environments, where required.
• Ensure that all data handling, transfer, and processing comply with legal, security, and company guidelines.
• Document IT processes, system configurations, and troubleshooting steps.
• Communicate effectively with business stakeholders, ensuring clarity and alignment on IT, network and security related matters.

• Bachelor's Degree in IT or a related field.
• 3+ years of experience in IT Operations, preferably in a healthcare or highly regulated environment.
• Strong knowledge of networking (firewalls, VPNs, VLANs, Wi-Fi, routing, switching etc.) and cybersecurity best practices.
• Familiarity with medical devices and healthcare IT systems (e.g., CMS, PACS, MRI, CT Scan, X-ray) is an advantage.
• Experience working on Fortigate and Meraki is a plus
• Experience with Windows servers and virtualisation (VMware, Hyper-V).
• Experience working with ticketing systems, preferably Jira.
• Familiarity with tools not limited to Confluence, Bitbucket, Google Workspace, Slack.
• Experience with single sign-on (SSO) systems, with preference for OneLogin.
• Hands-on experience with troubleshooting and supporting enterprise applications.
• Strong analytical and problem-solving skills with the ability to work independently.
• Flexibility to provide support on an ad-hoc basis during weekends, when required.
• A problem-solving mindset and a proactive attitude toward challenges.
• High standards of integrity and professionalism in all aspects of your work.
• A strong desire to learn, grow, and continuously improve in your role.

About our team

The Security and IT Operations team serves as the backbone of our secure platforms and services. We are responsible for ensuring seamless day-to-day operations, providing robust support, and safeguarding our large-scale, mission-critical applications. Our focus is on maintaining the availability, performance, and security of our platforms, which support B2C and B2B applications, GP and specialist clinics, medical centers, and offices across Singapore, Vietnam, Thailand, Indonesia, Malaysia, and the Philippines.

About the role

As we expand our healthcare services, we are seeking a Network Security Engineer (an individual contributor role) to support our growing infrastructure. This role will play a crucial part in ensuring the reliability, security, and performance of our IT operations across our medical facilities and offices in the region.

The ideal candidate will have strong network and security expertise and ideally, some experience working with medical and imaging systems (e.g., CMS, PACS, MRI, CT Scan, X-Ray). They will be responsible for maintaining and optimising the infrastructure, ensuring compliance with security policies, and providing hands-on technical support for the healthcare services.

A summary of the key responsibilities is as follows:

• Manage and support IT infrastructure (e.g., servers, VMs, routers, switches, firewalls, WAPs, ISPs, etc) across clinical and on-premise environments, ensuring seamless operations.
• Manage data backup processes and system operations, including user provisioning and access controls.
• Implement and maintain network security, ensuring compliance with industry best practices.
• Troubleshoot and resolve IT and medical device connectivity issues (experience with CMS, PACS, MRI, CT Scan, X-ray etc., is a plus).
• Install, upgrade, and configure hardware and software on laptops and other devices, where required.
• Collaborate with cross-functional teams to support the setup of day surgery and health screening centers.
• Monitor system performance, respond to incidents, and optimise IT operations.
• Work closely with the security teams to ensure compliance with cybersecurity policies.
• Assist in IT audits and regulatory compliance efforts for medical environments, where required.
• Ensure that all data handling, transfer, and processing comply with legal, security, and company guidelines.
• Document IT processes, system configurations, and troubleshooting steps.
• Communicate effectively with business stakeholders, ensuring clarity and alignment on IT, network and security related matters.

About you

• Bachelor's Degree in IT or a related field.
• 3+ years of experience in IT Operations, preferably in a healthcare or highly regulated environment.
• Strong knowledge of networking (firewalls, VPNs, VLANs, Wi-Fi, routing, switching etc.) and cybersecurity best practices.
• Familiarity with medical devices and healthcare IT systems (e.g., CMS, PACS, MRI, CT Scan, X-ray) is an advantage.
• Experience working on Fortigate and Meraki is a plus
• Experience with Windows servers and virtualisation (VMware, Hyper-V).
• Experience working with ticketing systems, preferably Jira.
• Familiarity with tools not limited to Confluence, Bitbucket, Google Workspace, Slack.
• Experience with single sign-on (SSO) systems, with preference for OneLogin.
• Hands-on experience with troubleshooting and supporting enterprise applications.
• Strong analytical and problem-solving skills with the ability to work independently.
• Flexibility to provide support on an ad-hoc basis during weekends, when required.
• A problem-solving mindset and a proactive attitude toward challenges.
• High standards of integrity and professionalism in all aspects of your work.
• A strong desire to learn, grow, and continuously improve in your role.

Seeking an experienced cybersecurity professional to design and implement advanced network security solutions. The ideal candidate will have a strong background in firewall configuration, secure network design, and threat detection.

This position demands technical expertise, problem-solving skills, and the ability to work independently. The selected individual will be responsible for safeguarding our enterprise network environment from security threats.

• Architect, configure, and maintain firewalls, VPNs, intrusion detection/prevention systems, NAC, and WAF solutions.
• Manage next-generation firewalls (NGFW), with hands-on experience required.
• Apply zero-trust architecture (ZTA) principles to strengthen enterprise network defenses.
• Optimize segmentation and micro-segmentation to enhance isolation and reduce attack surface.
• Deploy and maintain DDoS protection, DNS security, and secure web filtering.
• Secure cloud connectivity with AWS transport/security services (VPCs, Direct Connect, Transit Gateway, etc.).
• Monitor traffic, detect anomalies, and respond to incidents using SIEM, SOAR, and threat intelligence tools.
• Lead incident response activities, including forensic investigations and root cause analysis.
• Partner with SOC teams to improve threat visibility and enable proactive threat hunting.
• Perform vulnerability assessments, penetration tests, and firewall policy reviews.
• Maintain compliance with industry standards and regulations.
• Automate network security processes through scripting tools.
• Streamline firewall rule lifecycle and change management procedures.

• Bachelor's degree in Computer Science, Cybersecurity, or related field.
• 5+ years of experience in network security engineering, analysis, or similar roles.
• Deep expertise in firewall configuration, secure network design, and threat detection.
• Proven experience with Cisco or Palo Alto solutions.
• Strong knowledge of SIEM platforms and packet/traffic analysis tools.
• Hands-on experience with AWS cloud network security and related services.
• Familiarity with encryption standards, PKI, and remote access technologies.
• Exposure to incident response frameworks such as MITRE ATT&CK or NIST CSF.
• Strong analytical, troubleshooting, and communication skills.

• Aruba ClearPass NAC implementation and management experience.
• Relevant certifications such as CISSP or PCNSE.

We are seeking a seasoned expert to lead our cloud operations, responsible for network and endpoint protection. As a critical member of our team, you will ensure secure connectivity across platforms by managing network security infrastructure.

• Oversee the management of Palo Alto Firewalls and GlobalProtect VPN.
• Configure, monitor, and troubleshoot AWS networking components to maintain optimal performance.
• Implement effective endpoint protection strategies, access controls, and enforce robust network security policies.
• Respond to network-related incidents and service requests using ITIL processes to ensure timely resolution.
• Collaborate with cross-functional teams to guarantee reliable and secure connectivity.
• Document system configurations and procedures accurately to facilitate knowledge sharing.
• Communicate complex technical issues effectively to stakeholders.

• Strong experience in Palo Alto Firewall and VPN solutions is essential.
• Knowledge of AWS Cloud networking services is required.
• Familiarity with endpoint protection tools and best practices is necessary.
• Exposure to ITIL-based service management processes is advantageous.
• Excellent communication and problem-solving skills are crucial.
• Ability to work effectively within a team environment is vital.

NCS is a leading technology services firm that operates across the Asia Pacific region in over 20 cities, providing consulting, digital services, technology solutions, and more. We believe in harnessing the power of technology to achieve extraordinary things, creating lasting value and impact for our communities, partners, and people. Our diverse workforce of 13,000 has delivered large-scale, mission-critical, and multi-platform projects for governments and enterprises in Singapore and the APAC region.

We're searching for a Network & Security Engineer to be part of our diverse team of talent here at NCS

Overview

As a Network & Security Engineer, you will be responsible for the initial support and maintenance of OneCare's client. This role provides 24x7 standby onsite and remote troubleshooting support, onsite HW replacement, security patches and firmware or software upgrade of Network and Security devices while ensuring SLA contractual obligation is meet.

What will you do?

Network and Security Maintenance

• Perform routine network maintenance and system upgrades, including service packs, patches, and hot fixes.
• Hardware replacement which requires prepping up the replacement device with same firmware/software and patches with faulty device. This also requires basic to intermediate configuration.

Troubleshooting and Support

• Identify and resolve network and security issues promptly.
• Provide technical support to end-users and escalate issues to higher-level engineers when necessary.
• Document network problems and resolutions for future reference.
• Basic and/or Intermediatory skill in switches, routers or f5
• Basic and/or Intermediatory skill in Firewalls eg Fortinet, Checkpoint and/or Palo Alto

Security Management

• Adherence to all clients Security and Cyber hygiene policies.
  
  Respond to security audits and vulnerability assessments.

Incident Response

• Part of the 24x7 rotational standby to support all clients 24x7 ensuring meeting SLA.
• Respond to network and security incidents.
• Participate in incident response drills and post-incident reviews.
• Follow all processes, including timely escalation to senior engineers.

Documentation and Reporting

• Conduct and maintain accurate and up to date Preventive Maintenance report where contractually obligated.
• Daily regular accurate update of incident tickets.
• Collaborate with other engineers to ensure comprehensive documentation of network and security procedures/SOP.

The ideal candidate should possess:

• Diploma /Degree in Computer Science / Computer Engineering / Information Technology related field, or IT equivalent
• Network and security Internship experience or minimally 2 years of related experience or exposure
• Good knowledge of network and firewalls
• Experience in Fortinet/Check Point is a must
• Self-motivated with a positive "can-do" attitude, creative with excellent presentation, communication, negotiation and interpersonal skills including strong persuasive techniques.
• Ability to develop and maintain respectful and trusting relationship
• Good customer management experience
• Proficient in written and spoken English
• Able to travel as required