1,169 Network Administrators jobs in Singapore

Overview

SpeQtral is seeking a proactive and experienced Network Security Engineer with 2 to 5 years of experience to support SpeQtral’s Quantum Network programmes. The ideal candidate will be responsible for designing, implementing, and maintaining secure network infrastructures. You will also play a key role in protecting our organization’s digital assets by identifying vulnerabilities, mitigating threats, and ensuring compliance with industry standards.

The ideal candidate would additionally also oversee internal networking, IT, AV and management of cloud services within the organisation.

• Quantum Programme Support:
  • Understand customers’ technical requirements to provide technical support for fibre QKD network deployment between sites.
  • Assist with the installation and configuration of fibre QKD systems and support
  • Conduct preventive maintenance and checks to QKD systems
  • Investigate first line support calls assigned and identify the root cause of incidents and problems.
  • Troubleshoot and resolve hardware, software, network connectivity issues for projects that had been set up.
  • Liaise with customers and principal on escalated incidents
  • Ensure the efficient and comprehensive resolution of incidents and requests.
  • Provide training to end users on QKD network operations
• Network Security Design & Implementation:
  • Design, configure, and manage switches, firewalls, VPNs, IDS/IPS systems, and other security tools
  • Develop and enforce security policies and procedures to protect network integrity.
• Vulnerability Management:
  • Perform regular vulnerability assessments and penetration tests.
  • Be part of the cybersecurity team to remediate identified vulnerabilities and ensure secure configurations.
• Documentation:
  • Maintain up-to-date documentation of network configurations, policies, and security procedures.
• Support company infrastructure:
  • Managing company networking, IT and AV hardware
  • Performing admin roles for company cloud and SaaS subscriptions.

• Experience:
  • 2 to 5 years in network security, IT security, or a related field. Fresh graduates are encouraged to apply.
• Education:
  • Dip/Bachelor’s degree in Computer Science, Information Technology, Cybersecurity, or a related discipline (or equivalent work experience).
• Technical Skills:
  • Sound knowledge of network security technologies including switches, firewalls, VPNs, IDS/IPS, and SIEM solutions.
  • Proficiency in TCP/IP, DNS, DHCP, and other core networking protocols.
  • Programming using JavaScript and working with open source platforms such as Grafana
  • Working with cloud platforms, including AWS and Microsoft 365
  • (Good to have) Working and configuring soft hypervisors such as Proxmox
  • (Good to have) Experience with vulnerability assessment tools (e.g., Nessus, OpenVAS) and penetration testing methodologies.
  • (Good to have) Familiarity with security frameworks and compliance standards.
• Certifications:
  • Relevant certifications such as Cisco CCNA, CompTIA Security+ and/or CEH will be highly considered.
• Soft Skills:
  • Excellent analytical and problem-solving abilities.
  • Strong communication skills and the ability to work collaboratively in a team environment.
  • Proactive and responsive on assigned tasks and incidents follow-up
  • Team player and can work independently under minimum supervision

• Experience with scripting/programming languages (e.g., Python, Bash) for automating security tasks.
• Experience working with data visualization tools such as Grafana
• Knowledge of cloud security practices and tools if your organization leverages cloud infrastructures.
• Prior experience in a fast-paced environment where rapid response to security incidents is critical.
• Willing to be on scheduled standby for field service/maintenance support
• An interest in quantum communications and secure communication technologies.

SpeQtral is a global quantum technologies company on a mission to transform the world’s networks for the quantum revolution. Powered by technologies developed at the Centre for Quantum Technologies in Singapore, SpeQtral provides specialized solutions for quantum security to clients concerned about the security of their communications networks and infrastructure. SpeQtral’s core expertise lies in using a space-based quantum platform to establish long distance quantum networks with a global reach.

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Overview

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Role with SpeQtral, a Singapore-based quantum communications startup supported by SGInnovate.

SpeQtral is a Singapore-based quantum communications company that develops and deploys advanced Quantum Key Distribution (QKD) technology to secure critical networks against present and future cyber threats, including those posed by quantum computers. Founded with deep expertise in quantum physics and satellite engineering, SpeQtral works on terrestrial and space-based QKD systems, enabling governments, enterprises, and network operators to establish quantum-safe encryption for long-distance communications. Our mission is to accelerate the global adoption of quantum-secure networks by making trusted key distribution scalable, practical, and interoperable with existing infrastructures.

We are seeking a proactive and experienced Network Security Engineer with a minimum of 2 years of experience to support SpeQtral’s Quantum Network programmes. The ideal candidate will be responsible for designing, implementing, and maintaining secure network infrastructures. You will also play a key role in protecting our organization’s digital assets by identifying vulnerabilities, mitigating threats, and ensuring compliance with industry standards. As a startup, the ideal candidate would additionally oversee internal networking, IT, AV and management of cloud services within the organisation.

• Understand customers’ technical requirements to provide technical support for fibre QKD network deployment between sites.
• Assist with the installation and configuration of fibre QKD systems and support
• Conduct preventive maintenance and checks to QKD systems
• Investigate first line support calls assigned and identify the root cause of incidents and problems.
• Troubleshoot and resolve hardware, software, network connectivity issues for projects that had been set up.
• Liaise with customers and principal on escalated incidents
• Ensure the efficient and comprehensive resolution of incidents and requests.
• Provide training to end users on QKD network operations

• Design, configure, and manage switches, firewalls, VPNs, IDS/IPS systems, and other security tools
• Develop and enforce security policies and procedures to protect network integrity.

• Perform regular vulnerability assessments and penetration tests.
• Be part of the cybersecurity team to remediate identified vulnerabilities and ensure secure configurations.

• Maintain up-to-date documentation of network configurations, policies, and security procedures.

• Managing company networking, IT and AV hardware
• Performing admin roles for company cloud and SaaS subscriptions.

• 2 to 5 years in network security, IT security, or a related field. Fresh graduates are encouraged to apply.

• Dip/Bachelor’s degree in Computer Science, Information Technology, Cybersecurity, or a related discipline (or equivalent work experience).

• Sound knowledge of network security technologies including switches, firewalls, VPNs, IDS/IPS, and SIEM solutions.
• Proficiency in TCP/IP, DNS, DHCP, and other core networking protocols.
• Working with cloud platforms, including AWS and Microsoft 365
• Good to have: Working and configuring soft hypervisors such as Proxmox
• Good to have: Experience with vulnerability assessment tools (e.g., Nessus, OpenVAS) and penetration testing methodologies.
• Good to have: Familiarity with security frameworks and compliance standards.

• Relevant certifications such as Cisco CCNA, CompTIA Security+ and/or CEH will be highly considered.

• Excellent analytical and problem-solving abilities.
• Strong communication skills and the ability to work collaboratively in a team environment.
• Proactive and responsive on assigned tasks and incidents follow-up
• Team player and can work independently under minimum supervision

• Experience with scripting/programming languages (e.g., Python, Bash) for automating security tasks.
• Experience working with data visualization tools such as Grafana.
• Knowledge of cloud security practices and tools if your organization leverages cloud infrastructures.
• Prior experience in a fast-paced environment where rapid response to security incidents is critical.
• Willing to be on scheduled standby for field service/maintenance support.
• An interest in quantum communications and secure communication technologies.

Interested candidates may apply directly to DTC at:

• Associate

• Full-time

• Technology

• Technology, Information and Media and Information Services

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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. They will design, coordinate and implement security controls, audit configurations, and design networks in a hybrid compute environment. A successful candidate will have an attention to detail, the ability to understand what impacts their changes have on the network and relevant associated services.

What you’ll be doing:

• Collaborate with cross-functional security, technology, and trading teams to design and deploy innovative solutions that enhance both system integrity and trading performance.
• Actively contribute to the design, implementation, and maintenance of mission-critical trading infrastructure that drives resilient and scalable market operations.
• Implement robust strategies to reduce network risks by leveraging micro-segmentation, port-based security, and other innovative methods.
• Evaluate, diagnose, and implement effective network security solutions such as firewalls, network detect and response, intrusion prevention systems (IPS), and VPN concentrators to improve our network security and ensure reliable remote access.
• Leverage automation, AI, and other emerging and innovative technologies to continuously enhance our ability to detect and respond to security events.
• Perform in-depth analysis of network packet captures to investigate security incidents and identify areas for improvement.
• Continuously seek opportunities to automate tasks and streamline security operations for improved efficiency and effectiveness.

What we’re looking for:

• You are passionate about solving complex problems that enable our company to securely connect from anywhere globally to facilitate new business opportunities.
• You are a network security engineer who thrives on designing, implementing, and supporting cutting-edge security systems that keep our network safe from emerging threats.
• You can get your hands dirty with hands-on experience in firewalls, client VPNs, SASE, NDR, and IDS solutions.
• You enjoy scripting and coding to automate processes and reduce repetitive work.
• You have a solid understanding of TCP, UDP, IP, the OSI Model, and Layer 1-4 & 7 principles and security protocols.
• You are a dedicated professional who isn’t afraid of stepping up for on-call duties—even if it means working nights or weekends.
• You are someone who continuously seeks innovative improvements to drive high-quality, state-of-the-art, and effective security solutions.
• You are an effective communicator, able to translate complex technical insights into clear, actionable strategies that resonate with cross-functional teams.

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

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 .

Overview

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

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 hardware replacement, and security patches and firmware or software upgrades of network and security devices while ensuring SLA contractual obligations are met.

• 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 may require basic to intermediate configuration.

• 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 to intermediate skills in switches, routers or F5
• Basic to intermediate skills in Firewalls (e.g., Fortinet, Check Point and/or Palo Alto)

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

• Be 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.

• Maintain accurate and up-to-date Preventive Maintenance reports where contractually obligated.
• Provide daily regular updates of incident tickets.
• Collaborate with other engineers to ensure comprehensive documentation of network and security procedures/SOPs.

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 1 year of related experience or exposure
• Good knowledge of networks and firewalls
• 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 relationships
• Good customer management experience
• Proficient in written and spoken English
• Able to travel as required

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.

• 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 intermediate skill in switches, routers or F5. Basic and/or intermediate skill in Firewalls e.g., Fortinet, Check Point 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.

• 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

Overview

Join to apply for the Network Security Engineer role at Comstor Europe

Vacancy No VN13902 • Job Title: Network Security Engineer • Office Location: SG-Singapore • Alternative Office Location:

Your Key Responsibilities

Qualifications / Requirements

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.

• Entry level

• Full-time

• Information Technology

• IT Services and IT Consulting

Referrals increase your chances of interviewing at Comstor Europe by 2x

Get notified about new Network Security Engineer jobs in Singapore .

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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

Role: Network/Security Engineer

Location: Singapore

Onsite – 5days/week

Job Description:

The Service Provider must provide an on-site resource at each of the requested site, present Monday–Friday, 8 hours/day. Responsibilities include:

• Support the DT Leader in delivering IT/OT security high-priority projects

• Coordinate with facility & maintenance, EHS, quality, and operations teams on Secure Shop Connection projects

• Conduct OT/IT asset discovery, record management, and ongoing maintenance

• Liaise with third-party suppliers for asset inventory data

• Build and maintain documentation to demonstrate compliance with IT/OT controls

• Identify, document, and manage IDF/MDF infrastructure at sites

• Oversee hardware procurement processes

• Support shop floor asset connectivity to the network

• Perform malware scanning as per SOP/policies and work with GE Cybersecurity to remediate infections on OT devices

• Install and manage Nozomi network taps

• Configure and deploy IT/OT network infrastructure (e.g., switch installations) in alignment with GE-approved design standards

• Implement removable media controls, particularly for third-party suppliers

• Develop recovery and backup solutions with suppliers of critical OT

• Schedule and execute annual OT/IT device scanning